using ControlCenter.Models;
using Microsoft.EntityFrameworkCore;

namespace ControlCenter.Data;

/// <summary>
/// EF Core DbContext for the Control Center database.
///
/// <para>Provides <see cref="DbSet{T}"/> access to all persistent entities.
/// Uses snake_case naming conventions for PostgreSQL columns,
/// applied via <see cref="Configurations.AgentStateConfiguration"/>.</para>
///
/// <para>Connection string is configured in <c>appsettings.json</c>
/// under <c>ConnectionStrings:ControlCenterDb</c>.</para>
/// </summary>
public class ControlCenterDbContext : DbContext
{
    /// <summary>
    /// Agent state records — one row per active or recently active agent.
    /// Maps to the <c>agents</c> table.
    /// </summary>
    public DbSet<AgentState> AgentStates => Set<AgentState>();

    public ControlCenterDbContext(DbContextOptions<ControlCenterDbContext> options)
        : base(options)
    {
    }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        // Apply all entity configurations from this assembly
        modelBuilder.ApplyConfigurationsFromAssembly(
            typeof(Configurations.AgentStateConfiguration).Assembly);

        // Global snake_case naming convention for any unmapped columns
        // (explicit configurations take precedence)
        base.OnModelCreating(modelBuilder);
    }
}