<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

return new class extends Migration
{
    /**
     * Run the migrations.
     */
    public function up(): void
    {
        // 1. warehouses (倉庫)
        Schema::table('warehouses', function (Blueprint $table) {
            $table->index('type');
        });

        // 2. categories (分類)
        Schema::table('categories', function (Blueprint $table) {
            $table->index('is_active');
        });

        // 3. products (商品/原物料)
        Schema::table('products', function (Blueprint $table) {
            // is_active was added in a later migration, need to make sure column exists before indexing
            // Same for brand if not added at start (but brand is in the create migration)
            if (Schema::hasColumn('products', 'is_active')) {
                $table->index('is_active');
            }
            $table->index('brand');
        });

        // 4. recipes (配方/BOM)
        Schema::table('recipes', function (Blueprint $table) {
            $table->index('is_active');
        });

        // 5. inventory_transactions (庫存異動紀錄)
        Schema::table('inventory_transactions', function (Blueprint $table) {
            $table->index('type');
            $table->index('created_at');
        });

        // 6. purchase_orders (採購單)
        Schema::table('purchase_orders', function (Blueprint $table) {
            $table->index('status');
            $table->index('expected_delivery_date');
            $table->index('created_at');
        });

        // 7. production_orders (生產工單)
        Schema::table('production_orders', function (Blueprint $table) {
            $table->index('status');
            $table->index('created_at');
        });

        // 8. sales_orders (門市/銷售單)
        Schema::table('sales_orders', function (Blueprint $table) {
            $table->index('status');
            $table->index('sold_at');
            $table->index('created_at');
        });
    }

    /**
     * Reverse the migrations.
     */
    public function down(): void
    {
        Schema::table('warehouses', function (Blueprint $table) {
            $table->dropIndex(['type']);
        });

        Schema::table('categories', function (Blueprint $table) {
            $table->dropIndex(['is_active']);
        });

        Schema::table('products', function (Blueprint $table) {
            if (Schema::hasColumn('products', 'is_active')) {
                $table->dropIndex(['is_active']);
            }
            $table->dropIndex(['brand']);
        });

        Schema::table('recipes', function (Blueprint $table) {
            $table->dropIndex(['is_active']);
        });

        Schema::table('inventory_transactions', function (Blueprint $table) {
            $table->dropIndex(['type']);
            $table->dropIndex(['created_at']);
        });

        Schema::table('purchase_orders', function (Blueprint $table) {
            $table->dropIndex(['status']);
            $table->dropIndex(['expected_delivery_date']);
            $table->dropIndex(['created_at']);
        });

        Schema::table('production_orders', function (Blueprint $table) {
            $table->dropIndex(['status']);
            $table->dropIndex(['created_at']);
        });

        Schema::table('sales_orders', function (Blueprint $table) {
            $table->dropIndex(['status']);
            $table->dropIndex(['sold_at']);
            $table->dropIndex(['created_at']);
        });
    }
};
