Merge remote-tracking branch 'origin/dev' into agent/dex/CUB-32-usage-logging-service

# Conflicts:
#	backend/Infrastructure/Data/ExtrudexDbContext.cs
#	backend/Infrastructure/Data/Migrations/ExtrudexDbContextModelSnapshot.cs

backend/API/Controllers/PrintJobsController.cs

@@ -413,6 +413,92 @@ public class PrintJobsController : ControllerBase
         return NoContent();
     }
 
+    // ── GET /api/printjobs/{id}/cost-summary ──────────────────────────
+
+    /// <summary>
+    /// Gets the material cost summary for a specific print job.
+    /// Calculates total material cost from filament usage (grams derived)
+    /// and the spool's purchase price. Returns warnings instead of errors
+    /// when cost data is unavailable.
+    /// </summary>
+    /// <param name="id">The unique identifier of the print job.</param>
+    /// <returns>A cost summary with breakdown and any warnings about missing data.</returns>
+    /// <response code="200">Returns the cost summary. Warnings field lists any missing data.</response>
+    /// <response code="404">If the print job with the given ID is not found.</response>
+    [HttpGet("{id:guid}/cost-summary")]
+    [ProducesResponseType(typeof(CostSummaryResponse), StatusCodes.Status200OK)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
+    public async Task<ActionResult<CostSummaryResponse>> GetCostSummary(Guid id)
+    {
+        _logger.LogDebug("Getting cost summary for print job {Id}", id);
+
+        var job = await _dbContext.PrintJobs
+            .Include(j => j.Spool)
+                .ThenInclude(s => s!.MaterialBase)
+            .FirstOrDefaultAsync(j => j.Id == id);
+
+        if (job is null)
+        {
+            _logger.LogWarning("Print job {Id} not found for cost summary", id);
+            return NotFound(new { error = $"Print job with ID '{id}' not found." });
+        }
+
+        var warnings = new List<string>();
+        var spool = job.Spool;
+
+        // Build response with what we have
+        var response = new CostSummaryResponse
+        {
+            PrintJobId = job.Id,
+            PrintName = job.PrintName,
+            SpoolId = job.SpoolId,
+            SpoolSerial = spool?.SpoolSerial ?? string.Empty,
+            SpoolBrand = spool?.Brand ?? string.Empty,
+            SpoolColorName = spool?.ColorName ?? string.Empty,
+            MmExtruded = job.MmExtruded,
+            GramsDerived = job.GramsDerived,
+            SpoolPurchasePrice = spool?.PurchasePrice,
+            SpoolWeightTotalGrams = spool?.WeightTotalGrams,
+            StoredCostPerPrint = job.CostPerPrint
+        };
+
+        // Validate spool data availability
+        if (spool is null)
+        {
+            warnings.Add("Spool data is not available for this print job. Cost cannot be calculated.");
+            response.Warnings = warnings;
+            return Ok(response);
+        }
+
+        // Check if we can calculate cost
+        if (!spool.PurchasePrice.HasValue)
+        {
+            warnings.Add("Spool purchase price is not set. Cost per gram and total material cost cannot be calculated.");
+        }
+
+        if (spool.WeightTotalGrams <= 0)
+        {
+            warnings.Add("Spool total weight is zero or invalid. Cost per gram and total material cost cannot be calculated.");
+        }
+
+        // If we have enough data, calculate the cost
+        if (spool.PurchasePrice.HasValue && spool.WeightTotalGrams > 0)
+        {
+            var pricePerGram = spool.PurchasePrice.Value / spool.WeightTotalGrams;
+            response.PricePerGram = Math.Round(pricePerGram, 4);
+            response.TotalMaterialCost = Math.Round(job.GramsDerived * pricePerGram, 4);
+        }
+
+        // Warn if grams derived is zero but mm extruded is non-zero
+        if (job.GramsDerived == 0 && job.MmExtruded > 0)
+        {
+            warnings.Add("GramsDerived is zero despite MmExtruded being non-zero. Cost may be inaccurate. Consider re-deriving grams from filament parameters.");
+        }
+
+        response.Warnings = warnings;
+        return Ok(response);
+    }
+
     // ── Gram Derivation Formula ────────────────────────────────────
 
     /// <summary>

backend/API/DTOs/PrintJobs/CostSummaryResponse.cs

@@ -0,0 +1,55 @@
+namespace Extrudex.API.DTOs.PrintJobs;
+
+/// <summary>
+/// Response DTO for the cost summary of a print job.
+/// Provides a breakdown of material cost based on filament usage
+/// and spool pricing data. If cost data is incomplete, warnings
+/// are returned instead of throwing an error.
+/// </summary>
+public class CostSummaryResponse
+{
+    /// <summary>Unique identifier of the print job.</summary>
+    public Guid PrintJobId { get; set; }
+
+    /// <summary>Human-readable name of the print job.</summary>
+    public string PrintName { get; set; } = string.Empty;
+
+    /// <summary>Foreign key to the spool used for this print job.</summary>
+    public Guid SpoolId { get; set; }
+
+    /// <summary>Serial number of the spool.</summary>
+    public string SpoolSerial { get; set; } = string.Empty;
+
+    /// <summary>Brand of the spool.</summary>
+    public string SpoolBrand { get; set; } = string.Empty;
+
+    /// <summary>Color name of the spool.</summary>
+    public string SpoolColorName { get; set; } = string.Empty;
+
+    /// <summary>Total millimeters of filament extruded during this print.</summary>
+    public decimal MmExtruded { get; set; }
+
+    /// <summary>Derived grams consumed for this print job.</summary>
+    public decimal GramsDerived { get; set; }
+
+    /// <summary>Purchase price of the full spool, if available.</summary>
+    public decimal? SpoolPurchasePrice { get; set; }
+
+    /// <summary>Total weight of the spool in grams when full.</summary>
+    public decimal? SpoolWeightTotalGrams { get; set; }
+
+    /// <summary>Calculated price per gram (purchase price / total weight), if available.</summary>
+    public decimal? PricePerGram { get; set; }
+
+    /// <summary>Calculated total material cost for this print job, if available.</summary>
+    public decimal? TotalMaterialCost { get; set; }
+
+    /// <summary>The CostPerPrint stored on the print job entity, if set.</summary>
+    public decimal? StoredCostPerPrint { get; set; }
+
+    /// <summary>
+    /// Warnings about missing data that prevent cost calculation.
+    /// Empty if all data is available and cost was calculated successfully.
+    /// </summary>
+    public List<string> Warnings { get; set; } = new();
+}

backend/API/Filters/FluentValidationFilter.cs

@@ -0,0 +1,69 @@
+using FluentValidation;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Filters;
+
+namespace Extrudex.API.Filters;
+
+/// <summary>
+/// Action filter that automatically validates request DTOs using FluentValidation
+/// validators registered in DI. Runs before the controller action executes.
+/// Returns 400 Bad Request with validation errors if validation fails.
+/// </summary>
+public class FluentValidationFilter : IAsyncActionFilter
+{
+    private readonly IServiceProvider _serviceProvider;
+    private readonly ILogger<FluentValidationFilter> _logger;
+
+    public FluentValidationFilter(IServiceProvider serviceProvider, ILogger<FluentValidationFilter> logger)
+    {
+        _serviceProvider = serviceProvider;
+        _logger = logger;
+    }
+
+    public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
+    {
+        foreach (var argument in context.ActionArguments.Values)
+        {
+            if (argument is null) continue;
+
+            var argumentType = argument.GetType();
+            var validatorType = typeof(IValidator<>).MakeGenericType(argumentType);
+
+            // Try to resolve a validator for this argument type
+            var validator = _serviceProvider.GetService(validatorType) as IValidator;
+            if (validator is null) continue;
+
+            _logger.LogDebug("Validating {Type} with {Validator}", argumentType.Name, validator.GetType().Name);
+
+            var validationResult = await validator.ValidateAsync(
+                new ValidationContext<object>(argument), context.HttpContext.RequestAborted);
+
+            if (!validationResult.IsValid)
+            {
+                foreach (var error in validationResult.Errors)
+                {
+                    context.ModelState.AddModelError(error.PropertyName, error.ErrorMessage);
+                }
+            }
+        }
+
+        if (!context.ModelState.IsValid)
+        {
+            var errors = context.ModelState
+                .Where(kvp => kvp.Value?.Errors.Count > 0)
+                .ToDictionary(
+                    kvp => kvp.Key,
+                    kvp => kvp.Value!.Errors.Select(e => e.ErrorMessage).ToArray());
+
+            context.Result = new BadRequestObjectResult(new
+            {
+                title = "Validation failed",
+                status = 400,
+                errors
+            });
+            return;
+        }
+
+        await next();
+    }
+}

backend/API/Validators/FilamentValidators.cs

@@ -0,0 +1,108 @@
+using Extrudex.API.DTOs.Filaments;
+using FluentValidation;
+
+namespace Extrudex.API.Validators;
+
+/// <summary>
+/// Validation rules for creating a Filament (Spool) via the /filaments route.
+/// Mirrors the domain rules enforced in the controller and ensures consistent
+/// validation regardless of the request pipeline entry point.
+/// </summary>
+public class CreateFilamentRequestValidator : AbstractValidator<CreateFilamentRequest>
+{
+    public CreateFilamentRequestValidator()
+    {
+        RuleFor(x => x.MaterialBaseId)
+            .NotEmpty().WithMessage("MaterialBaseId is required.");
+
+        RuleFor(x => x.MaterialFinishId)
+            .NotEmpty().WithMessage("MaterialFinishId is required.");
+
+        RuleFor(x => x.Brand)
+            .NotEmpty().WithMessage("Brand is required.")
+            .MaximumLength(200).WithMessage("Brand must not exceed 200 characters.");
+
+        RuleFor(x => x.ColorName)
+            .NotEmpty().WithMessage("ColorName is required.")
+            .MaximumLength(200).WithMessage("ColorName must not exceed 200 characters.");
+
+        RuleFor(x => x.ColorHex)
+            .NotEmpty().WithMessage("ColorHex is required.")
+            .Matches(@"^#[0-9A-Fa-f]{6}$").WithMessage("ColorHex must be a valid hex color code (e.g., #FF0000).");
+
+        RuleFor(x => x.WeightTotalGrams)
+            .GreaterThan(0).WithMessage("Total weight must be greater than zero.");
+
+        RuleFor(x => x.WeightRemainingGrams)
+            .GreaterThanOrEqualTo(0).WithMessage("Remaining weight must be non-negative.");
+
+        RuleFor(x => x.WeightRemainingGrams)
+            .LessThanOrEqualTo(x => x.WeightTotalGrams)
+            .WithMessage("WeightRemainingGrams cannot exceed WeightTotalGrams.");
+
+        RuleFor(x => x.FilamentDiameterMm)
+            .GreaterThan(0).WithMessage("Filament diameter must be greater than zero.");
+
+        RuleFor(x => x.SpoolSerial)
+            .NotEmpty().WithMessage("SpoolSerial is required.")
+            .MaximumLength(200).WithMessage("SpoolSerial must not exceed 200 characters.");
+
+        When(x => x.PurchasePrice.HasValue, () =>
+        {
+            RuleFor(x => x.PurchasePrice!.Value)
+                .GreaterThanOrEqualTo(0).WithMessage("Purchase price must be non-negative.");
+        });
+    }
+}
+
+/// <summary>
+/// Validation rules for updating a Filament (Spool) via the /filaments route.
+/// Enforces the same domain rules as creation, plus ensures the updated
+/// WeightRemainingGrams does not exceed the updated WeightTotalGrams.
+/// </summary>
+public class UpdateFilamentRequestValidator : AbstractValidator<UpdateFilamentRequest>
+{
+    public UpdateFilamentRequestValidator()
+    {
+        RuleFor(x => x.MaterialBaseId)
+            .NotEmpty().WithMessage("MaterialBaseId is required.");
+
+        RuleFor(x => x.MaterialFinishId)
+            .NotEmpty().WithMessage("MaterialFinishId is required.");
+
+        RuleFor(x => x.Brand)
+            .NotEmpty().WithMessage("Brand is required.")
+            .MaximumLength(200).WithMessage("Brand must not exceed 200 characters.");
+
+        RuleFor(x => x.ColorName)
+            .NotEmpty().WithMessage("ColorName is required.")
+            .MaximumLength(200).WithMessage("ColorName must not exceed 200 characters.");
+
+        RuleFor(x => x.ColorHex)
+            .NotEmpty().WithMessage("ColorHex is required.")
+            .Matches(@"^#[0-9A-Fa-f]{6}$").WithMessage("ColorHex must be a valid hex color code (e.g., #FF0000).");
+
+        RuleFor(x => x.WeightTotalGrams)
+            .GreaterThan(0).WithMessage("Total weight must be greater than zero.");
+
+        RuleFor(x => x.WeightRemainingGrams)
+            .GreaterThanOrEqualTo(0).WithMessage("Remaining weight must be non-negative.");
+
+        RuleFor(x => x.WeightRemainingGrams)
+            .LessThanOrEqualTo(x => x.WeightTotalGrams)
+            .WithMessage("WeightRemainingGrams cannot exceed WeightTotalGrams.");
+
+        RuleFor(x => x.FilamentDiameterMm)
+            .GreaterThan(0).WithMessage("Filament diameter must be greater than zero.");
+
+        RuleFor(x => x.SpoolSerial)
+            .NotEmpty().WithMessage("SpoolSerial is required.")
+            .MaximumLength(200).WithMessage("SpoolSerial must not exceed 200 characters.");
+
+        When(x => x.PurchasePrice.HasValue, () =>
+        {
+            RuleFor(x => x.PurchasePrice!.Value)
+                .GreaterThanOrEqualTo(0).WithMessage("Purchase price must be non-negative.");
+        });
+    }
+}

backend/Domain/Entities/FilamentUsage.cs

@@ -0,0 +1,73 @@
+using Extrudex.Domain.Base;
+
+namespace Extrudex.Domain.Entities;
+
+/// <summary>
+/// Tracks filament consumption for a specific print job on a specific spool.
+/// Each record captures the grams used, which printer consumed it, and when the
+/// usage was recorded. This enables granular per-job usage analytics, COGS
+/// reconciliation, and spool weight depletion tracking.
+///
+/// A single PrintJob may have multiple FilamentUsage records if multiple spools
+/// were consumed (e.g., multi-material prints via AMS).
+/// </summary>
+public class FilamentUsage : AuditableEntity
+{
+    /// <summary>
+    /// Foreign key to the print job that consumed this filament.
+    /// A usage record is always tied to a print job.
+    /// </summary>
+    public Guid PrintJobId { get; set; }
+
+    /// <summary>
+    /// Navigation to the print job that consumed this filament.
+    /// </summary>
+    public PrintJob PrintJob { get; set; } = null!;
+
+    /// <summary>
+    /// Foreign key to the spool (filament) that provided the material.
+    /// Links usage back to the specific physical spool for inventory tracking.
+    /// </summary>
+    public Guid SpoolId { get; set; }
+
+    /// <summary>
+    /// Navigation to the spool that provided the material.
+    /// </summary>
+    public Spool Spool { get; set; } = null!;
+
+    /// <summary>
+    /// Foreign key to the printer that executed the print job.
+    /// Denormalized from PrintJob for direct querying of per-printer usage.
+    /// </summary>
+    public Guid PrinterId { get; set; }
+
+    /// <summary>
+    /// Navigation to the printer that executed the print job.
+    /// </summary>
+    public Printer Printer { get; set; } = null!;
+
+    /// <summary>
+    /// Grams of filament consumed during this print job.
+    /// Derived from mm_extruded × cross_section_area × material_density,
+    /// or measured directly from AMS weight delta.
+    /// </summary>
+    public decimal GramsUsed { get; set; }
+
+    /// <summary>
+    /// Millimeters of filament extruded for this usage record.
+    /// The primary physical measurement; grams_used is derived from this.
+    /// </summary>
+    public decimal MmExtruded { get; set; }
+
+    /// <summary>
+    /// Timestamp when this usage record was created (UTC).
+    /// Represents when the usage was first logged, which may differ from
+    /// the print job's started_at or completed_at timestamps.
+    /// </summary>
+    public DateTime RecordedAt { get; set; } = DateTime.UtcNow;
+
+    /// <summary>
+    /// Optional notes about this usage record (e.g., "AMS tray 3", "manual weight check").
+    /// </summary>
+    public string? Notes { get; set; }
+}

backend/Domain/Entities/PrintJob.cs

@@ -97,4 +97,10 @@ public class PrintJob : AuditableEntity
     /// Optional notes about the print job (e.g., "First layer adhesion issues").
     /// </summary>
     public string? Notes { get; set; }
+
+    /// <summary>
+    /// Navigation collection of filament usage records for this print job.
+    /// Enables tracking granular per-spool consumption within a print.
+    /// </summary>
+    public ICollection<FilamentUsage> FilamentUsages { get; set; } = new List<FilamentUsage>();
 }

backend/Domain/Entities/Printer.cs

@@ -94,4 +94,10 @@ public class Printer : AuditableEntity
     /// Navigation collection of print jobs executed on this printer.
     /// </summary>
     public ICollection<PrintJob> PrintJobs { get; set; } = new List<PrintJob>();
+
+    /// <summary>
+    /// Navigation collection of filament usage records tracking consumption on this printer.
+    /// Enables querying per-printer filament usage and COGS.
+    /// </summary>
+    public ICollection<FilamentUsage> FilamentUsages { get; set; } = new List<FilamentUsage>();
 }

backend/Domain/Entities/Spool.cs

@@ -102,4 +102,10 @@ public class Spool : AuditableEntity
     /// Navigation collection of print jobs that consumed filament from this spool.
     /// </summary>
     public ICollection<PrintJob> PrintJobs { get; set; } = new List<PrintJob>();
+
+    /// <summary>
+    /// Navigation collection of filament usage records tracking consumption from this spool.
+    /// Enables querying how much filament was consumed per print job.
+    /// </summary>
+    public ICollection<FilamentUsage> FilamentUsages { get; set; } = new List<FilamentUsage>();
 }

backend/Infrastructure/Data/Configurations/FilamentUsageConfiguration.cs

@@ -0,0 +1,83 @@
+using Extrudex.Domain.Entities;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace Extrudex.Infrastructure.Data.Configurations;
+
+public class FilamentUsageConfiguration : BaseEntityConfiguration<FilamentUsage>
+{
+    public override void Configure(EntityTypeBuilder<FilamentUsage> builder)
+    {
+        base.Configure(builder);
+
+        builder.Property(e => e.PrintJobId)
+            .HasColumnName("print_job_id")
+            .IsRequired();
+
+        builder.Property(e => e.SpoolId)
+            .HasColumnName("spool_id")
+            .IsRequired();
+
+        builder.Property(e => e.PrinterId)
+            .HasColumnName("printer_id")
+            .IsRequired();
+
+        builder.Property(e => e.GramsUsed)
+            .HasColumnName("grams_used")
+            .HasPrecision(10, 2)
+            .IsRequired();
+
+        builder.Property(e => e.MmExtruded)
+            .HasColumnName("mm_extruded")
+            .HasPrecision(12, 2)
+            .IsRequired();
+
+        builder.Property(e => e.RecordedAt)
+            .HasColumnName("recorded_at")
+            .HasDefaultValueSql("now() at time zone 'utc'")
+            .IsRequired();
+
+        builder.Property(e => e.Notes)
+            .HasColumnName("notes")
+            .HasMaxLength(2000);
+
+        // Index on print_job_id for querying usage by print job
+        builder.HasIndex(e => e.PrintJobId)
+            .HasDatabaseName("ix_filament_usages_print_job_id");
+
+        // Index on spool_id for querying usage by spool (filament)
+        builder.HasIndex(e => e.SpoolId)
+            .HasDatabaseName("ix_filament_usages_spool_id");
+
+        // Index on printer_id for querying usage by printer
+        builder.HasIndex(e => e.PrinterId)
+            .HasDatabaseName("ix_filament_usages_printer_id");
+
+        // Index on recorded_at for time-range queries
+        builder.HasIndex(e => e.RecordedAt)
+            .HasDatabaseName("ix_filament_usages_recorded_at");
+
+        // Composite index for querying usage by spool within a date range
+        builder.HasIndex(e => new { e.SpoolId, e.RecordedAt })
+            .HasDatabaseName("ix_filament_usages_spool_id_recorded_at");
+
+        // Relationships
+        builder.HasOne(e => e.PrintJob)
+            .WithMany(e => e.FilamentUsages)
+            .HasForeignKey(e => e.PrintJobId)
+            .HasConstraintName("fk_filament_usages_print_job")
+            .OnDelete(DeleteBehavior.Cascade);
+
+        builder.HasOne(e => e.Spool)
+            .WithMany(e => e.FilamentUsages)
+            .HasForeignKey(e => e.SpoolId)
+            .HasConstraintName("fk_filament_usages_spool")
+            .OnDelete(DeleteBehavior.Restrict);
+
+        builder.HasOne(e => e.Printer)
+            .WithMany(e => e.FilamentUsages)
+            .HasForeignKey(e => e.PrinterId)
+            .HasConstraintName("fk_filament_usages_printer")
+            .OnDelete(DeleteBehavior.Restrict);
+    }
+}

backend/Infrastructure/Data/ExtrudexDbContext.cs

@@ -1,79 +1 @@
-using Extrudex.Domain.Base;
-using Extrudex.Domain.Entities;
-using Microsoft.EntityFrameworkCore;
 
-namespace Extrudex.Infrastructure.Data;
-
-/// <summary>
-/// Main EF Core database context for the Extrudex system.
-/// Handles entity registration, snake_case naming, and automatic timestamp management.
-/// </summary>
-public class ExtrudexDbContext : DbContext
-{
-    public ExtrudexDbContext(DbContextOptions<ExtrudexDbContext> options) : base(options) { }
-
-    // Lookup tables
-    public DbSet<MaterialBase> MaterialBases => Set<MaterialBase>();
-    public DbSet<MaterialFinish> MaterialFinishes => Set<MaterialFinish>();
-    public DbSet<MaterialModifier> MaterialModifiers => Set<MaterialModifier>();
-
-    // Core entities
-    public DbSet<Spool> Spools => Set<Spool>();
-    public DbSet<Printer> Printers => Set<Printer>();
-    public DbSet<AmsUnit> AmsUnits => Set<AmsUnit>();
-    public DbSet<AmsSlot> AmsSlots => Set<AmsSlot>();
-    public DbSet<PrintJob> PrintJobs => Set<PrintJob>();
-    public DbSet<UsageLog> UsageLogs => Set<UsageLog>();
-
-    protected override void OnModelCreating(ModelBuilder modelBuilder)
-    {
-        base.OnModelCreating(modelBuilder);
-
-        // Apply all entity type configurations from the assembly
-        modelBuilder.ApplyConfigurationsFromAssembly(typeof(ExtrudexDbContext).Assembly);
-
-        // Apply seed data
-        modelBuilder.Entity<MaterialBase>().HasData(SeedData.MaterialBases);
-        modelBuilder.Entity<MaterialFinish>().HasData(SeedData.MaterialFinishes);
-        modelBuilder.Entity<MaterialModifier>().HasData(SeedData.MaterialModifiers);
-    }
-
-    /// <summary>
-    /// Automatically set UpdatedAt on auditable entities during SaveChanges.
-    /// </summary>
-    public override int SaveChanges(bool acceptAllChangesOnSuccess)
-    {
-        SetAuditTimestamps();
-        return base.SaveChanges(acceptAllChangesOnSuccess);
-    }
-
-    public override async Task<int> SaveChangesAsync(
-        bool acceptAllChangesOnSuccess,
-        CancellationToken cancellationToken = default)
-    {
-        SetAuditTimestamps();
-        return await base.SaveChangesAsync(acceptAllChangesOnSuccess, cancellationToken);
-    }
-
-    /// <summary>
-    /// Sets UpdatedAt on all auditable entities that have been modified.
-    /// Sets CreatedAt on all auditable entities that are being added.
-    /// </summary>
-    private void SetAuditTimestamps()
-    {
-        var entries = ChangeTracker.Entries<AuditableEntity>();
-
-        foreach (var entry in entries)
-        {
-            if (entry.State == EntityState.Added)
-            {
-                entry.Entity.CreatedAt = DateTime.UtcNow;
-                entry.Entity.UpdatedAt = DateTime.UtcNow;
-            }
-            else if (entry.State == EntityState.Modified)
-            {
-                entry.Entity.UpdatedAt = DateTime.UtcNow;
-            }
-        }
-    }
-}

backend/Infrastructure/Data/Migrations/20260426183433_AddFilamentUsageTrackingModel.cs

@@ -0,0 +1,533 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Extrudex.Infrastructure.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddFilamentUsageTrackingModel : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "filament_usages",
+                columns: table => new
+                {
+                    id = table.Column<Guid>(type: "uuid", nullable: false),
+                    print_job_id = table.Column<Guid>(type: "uuid", nullable: false),
+                    spool_id = table.Column<Guid>(type: "uuid", nullable: false),
+                    printer_id = table.Column<Guid>(type: "uuid", nullable: false),
+                    grams_used = table.Column<decimal>(type: "numeric(10,2)", precision: 10, scale: 2, nullable: false),
+                    mm_extruded = table.Column<decimal>(type: "numeric(12,2)", precision: 12, scale: 2, nullable: false),
+                    recorded_at = table.Column<DateTime>(type: "timestamp with time zone", nullable: false, defaultValueSql: "now() at time zone 'utc'"),
+                    notes = table.Column<string>(type: "character varying(2000)", maxLength: 2000, nullable: true),
+                    created_at = table.Column<DateTime>(type: "timestamp with time zone", nullable: false, defaultValueSql: "now() at time zone 'utc'"),
+                    updated_at = table.Column<DateTime>(type: "timestamp with time zone", nullable: false, defaultValueSql: "now() at time zone 'utc'")
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_filament_usages", x => x.id);
+                    table.ForeignKey(
+                        name: "fk_filament_usages_print_job",
+                        column: x => x.print_job_id,
+                        principalTable: "print_jobs",
+                        principalColumn: "id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "fk_filament_usages_printer",
+                        column: x => x.printer_id,
+                        principalTable: "printers",
+                        principalColumn: "id",
+                        onDelete: ReferentialAction.Restrict);
+                    table.ForeignKey(
+                        name: "fk_filament_usages_spool",
+                        column: x => x.spool_id,
+                        principalTable: "spools",
+                        principalColumn: "id",
+                        onDelete: ReferentialAction.Restrict);
+                });
+
+            migrationBuilder.UpdateData(
+                table: "material_bases",
+                keyColumn: "id",
+                keyValue: new Guid("10000000-0000-0000-0000-000000000001"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9388), new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9388) });
+
+            migrationBuilder.UpdateData(
+                table: "material_bases",
+                keyColumn: "id",
+                keyValue: new Guid("10000000-0000-0000-0000-000000000002"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9871), new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9871) });
+
+            migrationBuilder.UpdateData(
+                table: "material_bases",
+                keyColumn: "id",
+                keyValue: new Guid("10000000-0000-0000-0000-000000000003"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9881), new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9881) });
+
+            migrationBuilder.UpdateData(
+                table: "material_bases",
+                keyColumn: "id",
+                keyValue: new Guid("10000000-0000-0000-0000-000000000004"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9888), new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9888) });
+
+            migrationBuilder.UpdateData(
+                table: "material_bases",
+                keyColumn: "id",
+                keyValue: new Guid("10000000-0000-0000-0000-000000000005"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9895), new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9895) });
+
+            migrationBuilder.UpdateData(
+                table: "material_bases",
+                keyColumn: "id",
+                keyValue: new Guid("10000000-0000-0000-0000-000000000006"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9901), new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9902) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000001"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(90), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(90) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000002"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(251), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(251) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000003"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(259), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(259) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000004"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(266), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(266) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000005"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(272), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(272) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000006"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(278), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(278) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000007"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(285), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(285) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000008"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(291), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(291) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000009"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(297), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(298) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000010"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(304), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(304) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000011"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(310), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(310) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000012"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(316), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(317) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000013"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(323), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(323) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000014"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(329), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(329) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000015"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(336), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(336) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000001"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(482), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(482) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000002"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(805), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(806) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000003"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(815), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(815) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000004"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(821), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(821) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000005"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(828), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(828) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000006"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(834), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(834) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000007"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(840), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(840) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000008"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(847), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(847) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000009"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(853), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(853) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000010"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(859), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(860) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000011"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(866), new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(866) });
+
+            migrationBuilder.CreateIndex(
+                name: "ix_filament_usages_print_job_id",
+                table: "filament_usages",
+                column: "print_job_id");
+
+            migrationBuilder.CreateIndex(
+                name: "ix_filament_usages_printer_id",
+                table: "filament_usages",
+                column: "printer_id");
+
+            migrationBuilder.CreateIndex(
+                name: "ix_filament_usages_recorded_at",
+                table: "filament_usages",
+                column: "recorded_at");
+
+            migrationBuilder.CreateIndex(
+                name: "ix_filament_usages_spool_id",
+                table: "filament_usages",
+                column: "spool_id");
+
+            migrationBuilder.CreateIndex(
+                name: "ix_filament_usages_spool_id_recorded_at",
+                table: "filament_usages",
+                columns: new[] { "spool_id", "recorded_at" });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "filament_usages");
+
+            migrationBuilder.UpdateData(
+                table: "material_bases",
+                keyColumn: "id",
+                keyValue: new Guid("10000000-0000-0000-0000-000000000001"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(1096), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(1096) });
+
+            migrationBuilder.UpdateData(
+                table: "material_bases",
+                keyColumn: "id",
+                keyValue: new Guid("10000000-0000-0000-0000-000000000002"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(1620), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(1620) });
+
+            migrationBuilder.UpdateData(
+                table: "material_bases",
+                keyColumn: "id",
+                keyValue: new Guid("10000000-0000-0000-0000-000000000003"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(1630), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(1630) });
+
+            migrationBuilder.UpdateData(
+                table: "material_bases",
+                keyColumn: "id",
+                keyValue: new Guid("10000000-0000-0000-0000-000000000004"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(1638), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(1638) });
+
+            migrationBuilder.UpdateData(
+                table: "material_bases",
+                keyColumn: "id",
+                keyValue: new Guid("10000000-0000-0000-0000-000000000005"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(1645), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(1645) });
+
+            migrationBuilder.UpdateData(
+                table: "material_bases",
+                keyColumn: "id",
+                keyValue: new Guid("10000000-0000-0000-0000-000000000006"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(1651), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(1652) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000001"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(1850), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(1850) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000002"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2041), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2041) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000003"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2049), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2049) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000004"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2055), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2056) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000005"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2062), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2062) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000006"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2068), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2068) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000007"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2075), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2075) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000008"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2081), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2081) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000009"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2100), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2100) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000010"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2107), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2107) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000011"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2113), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2113) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000012"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2120), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2120) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000013"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2126), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2126) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000014"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2132), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2133) });
+
+            migrationBuilder.UpdateData(
+                table: "material_finishes",
+                keyColumn: "id",
+                keyValue: new Guid("20000000-0000-0000-0000-000000000015"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2139), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2139) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000001"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2304), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2304) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000002"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2463), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2463) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000003"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2471), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2471) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000004"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2477), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2478) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000005"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2484), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2484) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000006"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2490), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2491) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000007"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2497), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2497) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000008"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2503), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2503) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000009"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2510), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2510) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000010"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2516), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2516) });
+
+            migrationBuilder.UpdateData(
+                table: "material_modifiers",
+                keyColumn: "id",
+                keyValue: new Guid("30000000-0000-0000-0000-000000000011"),
+                columns: new[] { "created_at", "updated_at" },
+                values: new object[] { new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2522), new DateTime(2026, 4, 26, 13, 14, 18, 745, DateTimeKind.Utc).AddTicks(2523) });
+        }
+    }
+}

backend/Infrastructure/Data/Migrations/ExtrudexDbContextModelSnapshot.cs

@@ -104,6 +104,77 @@ namespace Extrudex.Infrastructure.Data.Migrations
                     b.ToTable("ams_units", (string)null);
                 });
 
+            modelBuilder.Entity("Extrudex.Domain.Entities.FilamentUsage", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .HasColumnType("uuid")
+                        .HasColumnName("id");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("created_at")
+                        .HasDefaultValueSql("now() at time zone 'utc'");
+
+                    b.Property<decimal>("GramsUsed")
+                        .HasPrecision(10, 2)
+                        .HasColumnType("numeric(10,2)")
+                        .HasColumnName("grams_used");
+
+                    b.Property<decimal>("MmExtruded")
+                        .HasPrecision(12, 2)
+                        .HasColumnType("numeric(12,2)")
+                        .HasColumnName("mm_extruded");
+
+                    b.Property<string>("Notes")
+                        .HasMaxLength(2000)
+                        .HasColumnType("character varying(2000)")
+                        .HasColumnName("notes");
+
+                    b.Property<Guid>("PrintJobId")
+                        .HasColumnType("uuid")
+                        .HasColumnName("print_job_id");
+
+                    b.Property<Guid>("PrinterId")
+                        .HasColumnType("uuid")
+                        .HasColumnName("printer_id");
+
+                    b.Property<DateTime>("RecordedAt")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("recorded_at")
+                        .HasDefaultValueSql("now() at time zone 'utc'");
+
+                    b.Property<Guid>("SpoolId")
+                        .HasColumnType("uuid")
+                        .HasColumnName("spool_id");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("timestamp with time zone")
+                        .HasColumnName("updated_at")
+                        .HasDefaultValueSql("now() at time zone 'utc'");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PrintJobId")
+                        .HasDatabaseName("ix_filament_usages_print_job_id");
+
+                    b.HasIndex("PrinterId")
+                        .HasDatabaseName("ix_filament_usages_printer_id");
+
+                    b.HasIndex("RecordedAt")
+                        .HasDatabaseName("ix_filament_usages_recorded_at");
+
+                    b.HasIndex("SpoolId")
+                        .HasDatabaseName("ix_filament_usages_spool_id");
+
+                    b.HasIndex("SpoolId", "RecordedAt")
+                        .HasDatabaseName("ix_filament_usages_spool_id_recorded_at");
+
+                    b.ToTable("filament_usages", (string)null);
+                });
+
             modelBuilder.Entity("Extrudex.Domain.Entities.MaterialBase", b =>
                 {
                     b.Property<Guid>("Id")
@@ -145,50 +216,50 @@ namespace Extrudex.Infrastructure.Data.Migrations
                         new
                         {
                             Id = new Guid("10000000-0000-0000-0000-000000000001"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(6535),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9388),
                             DensityGperCm3 = 1.24m,
                             Name = "PLA",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(6535)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9388)
                         },
                         new
                         {
                             Id = new Guid("10000000-0000-0000-0000-000000000002"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7016),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9871),
                             DensityGperCm3 = 1.27m,
                             Name = "PETG",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7016)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9871)
                         },
                         new
                         {
                             Id = new Guid("10000000-0000-0000-0000-000000000003"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7027),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9881),
                             DensityGperCm3 = 1.04m,
                             Name = "ABS",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7028)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9881)
                         },
                         new
                         {
                             Id = new Guid("10000000-0000-0000-0000-000000000004"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7034),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9888),
                             DensityGperCm3 = 1.07m,
                             Name = "ASA",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7035)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9888)
                         },
                         new
                         {
                             Id = new Guid("10000000-0000-0000-0000-000000000005"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7042),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9895),
                             DensityGperCm3 = 1.21m,
                             Name = "TPU",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7042)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9895)
                         },
                         new
                         {
                             Id = new Guid("10000000-0000-0000-0000-000000000006"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7049),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9901),
                             DensityGperCm3 = 1.14m,
                             Name = "Nylon",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7049)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 291, DateTimeKind.Utc).AddTicks(9902)
                         });
                 });
 
@@ -232,122 +303,122 @@ namespace Extrudex.Infrastructure.Data.Migrations
                         new
                         {
                             Id = new Guid("20000000-0000-0000-0000-000000000001"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7291),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(90),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000001"),
                             Name = "Basic",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7292)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(90)
                         },
                         new
                         {
                             Id = new Guid("20000000-0000-0000-0000-000000000002"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7453),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(251),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000001"),
                             Name = "Matte",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7453)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(251)
                         },
                         new
                         {
                             Id = new Guid("20000000-0000-0000-0000-000000000003"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7461),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(259),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000001"),
                             Name = "Silk",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7461)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(259)
                         },
                         new
                         {
                             Id = new Guid("20000000-0000-0000-0000-000000000004"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7468),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(266),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000001"),
                             Name = "Glitter",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7468)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(266)
                         },
                         new
                         {
                             Id = new Guid("20000000-0000-0000-0000-000000000005"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7474),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(272),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000001"),
                             Name = "Marble",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7474)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(272)
                         },
                         new
                         {
                             Id = new Guid("20000000-0000-0000-0000-000000000006"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7480),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(278),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000001"),
                             Name = "Sparkle",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7481)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(278)
                         },
                         new
                         {
                             Id = new Guid("20000000-0000-0000-0000-000000000007"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7487),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(285),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000002"),
                             Name = "Basic",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7487)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(285)
                         },
                         new
                         {
                             Id = new Guid("20000000-0000-0000-0000-000000000008"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7493),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(291),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000002"),
                             Name = "Matte",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7493)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(291)
                         },
                         new
                         {
                             Id = new Guid("20000000-0000-0000-0000-000000000009"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7500),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(297),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000002"),
                             Name = "Silk",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7500)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(298)
                         },
                         new
                         {
                             Id = new Guid("20000000-0000-0000-0000-000000000010"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7507),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(304),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000003"),
                             Name = "Basic",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7507)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(304)
                         },
                         new
                         {
                             Id = new Guid("20000000-0000-0000-0000-000000000011"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7513),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(310),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000003"),
                             Name = "Matte",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7513)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(310)
                         },
                         new
                         {
                             Id = new Guid("20000000-0000-0000-0000-000000000012"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7519),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(316),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000004"),
                             Name = "Basic",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7520)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(317)
                         },
                         new
                         {
                             Id = new Guid("20000000-0000-0000-0000-000000000013"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7526),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(323),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000004"),
                             Name = "Matte",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7526)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(323)
                         },
                         new
                         {
                             Id = new Guid("20000000-0000-0000-0000-000000000014"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7532),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(329),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000005"),
                             Name = "Basic",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7532)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(329)
                         },
                         new
                         {
                             Id = new Guid("20000000-0000-0000-0000-000000000015"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7538),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(336),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000006"),
                             Name = "Basic",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7539)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(336)
                         });
                 });
 
@@ -391,90 +462,90 @@ namespace Extrudex.Infrastructure.Data.Migrations
                         new
                         {
                             Id = new Guid("30000000-0000-0000-0000-000000000001"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7690),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(482),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000001"),
                             Name = "Carbon Fiber",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7690)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(482)
                         },
                         new
                         {
                             Id = new Guid("30000000-0000-0000-0000-000000000002"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7838),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(805),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000001"),
                             Name = "Glass Fiber",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7838)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(806)
                         },
                         new
                         {
                             Id = new Guid("30000000-0000-0000-0000-000000000003"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7846),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(815),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000001"),
                             Name = "Wood Fill",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7846)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(815)
                         },
                         new
                         {
                             Id = new Guid("30000000-0000-0000-0000-000000000004"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7853),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(821),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000001"),
                             Name = "Glow-in-the-Dark",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7853)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(821)
                         },
                         new
                         {
                             Id = new Guid("30000000-0000-0000-0000-000000000005"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7859),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(828),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000002"),
                             Name = "Carbon Fiber",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7859)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(828)
                         },
                         new
                         {
                             Id = new Guid("30000000-0000-0000-0000-000000000006"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7865),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(834),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000002"),
                             Name = "Glass Fiber",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7866)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(834)
                         },
                         new
                         {
                             Id = new Guid("30000000-0000-0000-0000-000000000007"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7872),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(840),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000003"),
                             Name = "Carbon Fiber",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7872)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(840)
                         },
                         new
                         {
                             Id = new Guid("30000000-0000-0000-0000-000000000008"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7878),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(847),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000003"),
                             Name = "Glass Fiber",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7879)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(847)
                         },
                         new
                         {
                             Id = new Guid("30000000-0000-0000-0000-000000000009"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7885),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(853),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000004"),
                             Name = "Carbon Fiber",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7885)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(853)
                         },
                         new
                         {
                             Id = new Guid("30000000-0000-0000-0000-000000000010"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7891),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(859),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000006"),
                             Name = "Carbon Fiber",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7891)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(860)
                         },
                         new
                         {
                             Id = new Guid("30000000-0000-0000-0000-000000000011"),
-                            CreatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7898),
+                            CreatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(866),
                             MaterialBaseId = new Guid("10000000-0000-0000-0000-000000000006"),
                             Name = "Glass Fiber",
-                            UpdatedAt = new DateTime(2026, 4, 26, 18, 43, 28, 895, DateTimeKind.Utc).AddTicks(7898)
+                            UpdatedAt = new DateTime(2026, 4, 26, 18, 34, 33, 292, DateTimeKind.Utc).AddTicks(866)
                         });
                 });
 
@@ -806,81 +877,6 @@ namespace Extrudex.Infrastructure.Data.Migrations
                     b.ToTable("spools", (string)null);
                 });
 
-            modelBuilder.Entity("Extrudex.Domain.Entities.UsageLog", b =>
-                {
-                    b.Property<Guid>("Id")
-                        .HasColumnType("uuid")
-                        .HasColumnName("id");
-
-                    b.Property<DateTime>("CreatedAt")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("timestamp with time zone")
-                        .HasColumnName("created_at")
-                        .HasDefaultValueSql("now() at time zone 'utc'");
-
-                    b.Property<string>("DataSource")
-                        .IsRequired()
-                        .HasMaxLength(50)
-                        .HasColumnType("character varying(50)")
-                        .HasColumnName("data_source");
-
-                    b.Property<decimal>("GramsUsed")
-                        .HasPrecision(10, 2)
-                        .HasColumnType("numeric(10,2)")
-                        .HasColumnName("grams_used");
-
-                    b.Property<decimal?>("MmExtruded")
-                        .HasPrecision(12, 2)
-                        .HasColumnType("numeric(12,2)")
-                        .HasColumnName("mm_extruded");
-
-                    b.Property<string>("Notes")
-                        .HasMaxLength(2000)
-                        .HasColumnType("character varying(2000)")
-                        .HasColumnName("notes");
-
-                    b.Property<Guid?>("PrintJobId")
-                        .HasColumnType("uuid")
-                        .HasColumnName("print_job_id");
-
-                    b.Property<Guid?>("PrinterId")
-                        .HasColumnType("uuid")
-                        .HasColumnName("printer_id");
-
-                    b.Property<Guid>("SpoolId")
-                        .HasColumnType("uuid")
-                        .HasColumnName("spool_id");
-
-                    b.Property<DateTime>("UpdatedAt")
-                        .ValueGeneratedOnAdd()
-                        .HasColumnType("timestamp with time zone")
-                        .HasColumnName("updated_at")
-                        .HasDefaultValueSql("now() at time zone 'utc'");
-
-                    b.Property<DateTime>("UsageTimestamp")
-                        .HasColumnType("timestamp with time zone")
-                        .HasColumnName("usage_timestamp");
-
-                    b.HasKey("Id");
-
-                    b.HasIndex("DataSource")
-                        .HasDatabaseName("ix_usage_logs_data_source");
-
-                    b.HasIndex("PrintJobId")
-                        .HasDatabaseName("ix_usage_logs_print_job_id");
-
-                    b.HasIndex("PrinterId")
-                        .HasDatabaseName("ix_usage_logs_printer_id");
-
-                    b.HasIndex("SpoolId")
-                        .HasDatabaseName("ix_usage_logs_spool_id");
-
-                    b.HasIndex("UsageTimestamp")
-                        .HasDatabaseName("ix_usage_logs_usage_timestamp");
-
-                    b.ToTable("usage_logs", (string)null);
-                });
-
             modelBuilder.Entity("Extrudex.Domain.Entities.AmsSlot", b =>
                 {
                     b.HasOne("Extrudex.Domain.Entities.AmsUnit", "AmsUnit")
@@ -913,6 +909,36 @@ namespace Extrudex.Infrastructure.Data.Migrations
                     b.Navigation("Printer");
                 });
 
+            modelBuilder.Entity("Extrudex.Domain.Entities.FilamentUsage", b =>
+                {
+                    b.HasOne("Extrudex.Domain.Entities.PrintJob", "PrintJob")
+                        .WithMany("FilamentUsages")
+                        .HasForeignKey("PrintJobId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired()
+                        .HasConstraintName("fk_filament_usages_print_job");
+
+                    b.HasOne("Extrudex.Domain.Entities.Printer", "Printer")
+                        .WithMany("FilamentUsages")
+                        .HasForeignKey("PrinterId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired()
+                        .HasConstraintName("fk_filament_usages_printer");
+
+                    b.HasOne("Extrudex.Domain.Entities.Spool", "Spool")
+                        .WithMany("FilamentUsages")
+                        .HasForeignKey("SpoolId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired()
+                        .HasConstraintName("fk_filament_usages_spool");
+
+                    b.Navigation("PrintJob");
+
+                    b.Navigation("Printer");
+
+                    b.Navigation("Spool");
+                });
+
             modelBuilder.Entity("Extrudex.Domain.Entities.MaterialFinish", b =>
                 {
                     b.HasOne("Extrudex.Domain.Entities.MaterialBase", "MaterialBase")
@@ -987,34 +1013,6 @@ namespace Extrudex.Infrastructure.Data.Migrations
                     b.Navigation("MaterialModifier");
                 });
 
-            modelBuilder.Entity("Extrudex.Domain.Entities.UsageLog", b =>
-                {
-                    b.HasOne("Extrudex.Domain.Entities.PrintJob", "PrintJob")
-                        .WithMany()
-                        .HasForeignKey("PrintJobId")
-                        .OnDelete(DeleteBehavior.SetNull)
-                        .HasConstraintName("fk_usage_logs_print_job");
-
-                    b.HasOne("Extrudex.Domain.Entities.Printer", "Printer")
-                        .WithMany()
-                        .HasForeignKey("PrinterId")
-                        .OnDelete(DeleteBehavior.SetNull)
-                        .HasConstraintName("fk_usage_logs_printer");
-
-                    b.HasOne("Extrudex.Domain.Entities.Spool", "Spool")
-                        .WithMany()
-                        .HasForeignKey("SpoolId")
-                        .OnDelete(DeleteBehavior.Restrict)
-                        .IsRequired()
-                        .HasConstraintName("fk_usage_logs_spool");
-
-                    b.Navigation("PrintJob");
-
-                    b.Navigation("Printer");
-
-                    b.Navigation("Spool");
-                });
-
             modelBuilder.Entity("Extrudex.Domain.Entities.AmsUnit", b =>
                 {
                     b.Navigation("Slots");
@@ -1039,10 +1037,17 @@ namespace Extrudex.Infrastructure.Data.Migrations
                     b.Navigation("Spools");
                 });
 
+            modelBuilder.Entity("Extrudex.Domain.Entities.PrintJob", b =>
+                {
+                    b.Navigation("FilamentUsages");
+                });
+
             modelBuilder.Entity("Extrudex.Domain.Entities.Printer", b =>
                 {
                     b.Navigation("AmsUnits");
 
+                    b.Navigation("FilamentUsages");
+
                     b.Navigation("PrintJobs");
                 });
 
@@ -1050,6 +1055,8 @@ namespace Extrudex.Infrastructure.Data.Migrations
                 {
                     b.Navigation("AmsSlots");
 
+                    b.Navigation("FilamentUsages");
+
                     b.Navigation("PrintJobs");
                 });
 #pragma warning restore 612, 618

backend/Program.cs

@@ -1,4 +1,5 @@
 using System.Reflection;
+using Extrudex.API.Filters;
 using Extrudex.API.Hubs;
 using Extrudex.Domain.Interfaces;
 using Extrudex.Infrastructure.Data;
@@ -23,7 +24,10 @@ builder.Services.AddDbContext<ExtrudexDbContext>(options =>
     options.UseNpgsql(connectionString));
 
 // ── API Services ───────────────────────────────────────────
-builder.Services.AddControllers();
+builder.Services.AddControllers(options =>
+{
+    options.Filters.AddService<FluentValidationFilter>();
+});
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddSwaggerGen(c =>
 {
@@ -53,6 +57,10 @@ builder.Services.AddScoped<IUsageLogService, UsageLogService>();
 // Registers all validators from the API assembly into DI.
 builder.Services.AddValidatorsFromAssembly(Assembly.GetExecutingAssembly());
 
+// Register the FluentValidation action filter so validators run automatically
+// on all API controller actions before the action executes.
+builder.Services.AddScoped<FluentValidationFilter>();
+
 // ── CORS (kiosk + remote browser) ─────────────────────────
 // AllowAnyOrigin disallows credentials by spec; this is fine for
 // REST API calls. SignalR WebSockets negotiate without credentials