fix : 카테고리, 제품등록, BOM등록 API (일부 개발 - BOM 추가 작업 필요)

database/migrations/2025_08_25_153000_update_product_components_add_ref_type_and_material_id.php

@@ -0,0 +1,105 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        // 1) child_product_id 를 NULL 허용으로 변경 (MySQL 원시 SQL 사용)
+        //    (doctrine/dbal 없이 컬럼 수정)
+        DB::statement("
+            ALTER TABLE product_components
+            MODIFY child_product_id BIGINT UNSIGNED NULL COMMENT '하위 제품/부품 ID';
+        ");
+
+        Schema::table('product_components', function (Blueprint $table) {
+            // 2) ref_type, material_id 추가
+            $table->enum('ref_type', ['PRODUCT', 'MATERIAL'])
+                ->default('PRODUCT')
+                ->after('parent_product_id')
+                ->comment('참조 대상 타입(PRODUCT=제품, MATERIAL=자재)');
+
+            $table->unsignedBigInteger('material_id')
+                ->nullable()
+                ->after('child_product_id')
+                ->comment('자재 ID');
+
+            $table->foreign('material_id')
+                ->references('id')
+                ->on('materials')
+                ->nullOnDelete();
+        });
+
+        // 3) 기존 유니크 키 재정의:
+        //    (tenant_id, parent_product_id, ref_type, child_product_id, material_id, sort_order)
+        //    - 제품/자재 타입과 각각의 ID를 모두 포함하도록 변경
+        DB::statement("ALTER TABLE product_components DROP INDEX uq_component_row");
+        DB::statement("
+            ALTER TABLE product_components
+            ADD UNIQUE INDEX uq_component_row
+            (tenant_id, parent_product_id, ref_type, child_product_id, material_id, sort_order)
+        ");
+
+        // 4) (선택) CHECK 제약: MySQL 8.0.16+ 에서만 유효
+        //    ref_type=PRODUCT -> child_product_id NOT NULL AND material_id NULL
+        //    ref_type=MATERIAL -> material_id NOT NULL AND child_product_id NULL
+        try {
+            $version = DB::selectOne('SELECT VERSION() AS v')->v ?? '';
+            // 매우 단순한 버전체크 (8.0 이상일 때 시도)
+            if (preg_match('/^8\./', $version)) {
+                DB::statement("
+                    ALTER TABLE product_components
+                    ADD CONSTRAINT chk_ref_type_consistency
+                    CHECK (
+                        (ref_type = 'PRODUCT' AND child_product_id IS NOT NULL AND material_id IS NULL) OR
+                        (ref_type = 'MATERIAL' AND material_id IS NOT NULL AND child_product_id IS NULL)
+                    )
+                ");
+            }
+        } catch (\Throwable $e) {
+            // CHECK 미지원(DB버전/엔진)일 경우 무시하고 넘어갑니다.
+        }
+    }
+
+    public function down(): void
+    {
+        // CHECK 제약 삭제 (가능한 경우만)
+        try {
+            DB::statement("
+                ALTER TABLE product_components
+                DROP CHECK chk_ref_type_consistency
+            ");
+        } catch (\Throwable $e) {
+            // 무시
+        }
+
+        // 유니크 키를 원래대로 복구
+        try {
+            DB::statement("ALTER TABLE product_components DROP INDEX uq_component_row");
+        } catch (\Throwable $e) {
+            // 무시
+        }
+        DB::statement("
+            ALTER TABLE product_components
+            ADD UNIQUE INDEX uq_component_row
+            (tenant_id, parent_product_id, child_product_id, sort_order)
+        ");
+
+        Schema::table('product_components', function (Blueprint $table) {
+            // FK 우선 제거
+            $table->dropForeign(['material_id']);
+            // 컬럼 삭제
+            $table->dropColumn(['ref_type', 'material_id']);
+        });
+
+        // child_product_id 를 NOT NULL 로 되돌림
+        DB::statement("
+            ALTER TABLE product_components
+            MODIFY child_product_id BIGINT UNSIGNED NOT NULL COMMENT '하위 제품/부품 ID';
+        ");
+    }
+};