CUB-130: Build Add/Edit Filament form with backend endpoints for finishes and modifiers

backend/internal/repositories/material_modifier_repository.go

@@ -0,0 +1,50 @@
+package repositories
+
+import (
+	"context"
+
+	"github.com/CubeCraft-Creations/Extrudex/backend/internal/models"
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+// MaterialModifierRepository handles database queries for material modifiers.
+type MaterialModifierRepository struct {
+	pool *pgxpool.Pool
+}
+
+// NewMaterialModifierRepository creates a MaterialModifierRepository backed by the given pool.
+func NewMaterialModifierRepository(pool *pgxpool.Pool) *MaterialModifierRepository {
+	return &MaterialModifierRepository{pool: pool}
+}
+
+// GetAll returns all material modifiers ordered by name.
+func (r *MaterialModifierRepository) GetAll(ctx context.Context) ([]models.MaterialModifier, error) {
+	rows, err := r.pool.Query(ctx, `
+		SELECT id, name, description, created_at, updated_at
+		FROM material_modifiers
+		ORDER BY name
+	`)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var modifiers []models.MaterialModifier
+	for rows.Next() {
+		var m models.MaterialModifier
+		if err := rows.Scan(
+			&m.ID, &m.Name, &m.Description,
+			&m.CreatedAt, &m.UpdatedAt,
+		); err != nil {
+			return nil, err
+		}
+		modifiers = append(modifiers, m)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	if modifiers == nil {
+		modifiers = []models.MaterialModifier{}
+	}
+	return modifiers, nil
+}