<?php

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

return new class extends Migration
{
    /**
     * Run the migrations.
     * 采购管理（C1-C6）：采购单、采购明细（发送供应商）、采购金额分摊（D3）
     */
    public function up(): void
    {
        // 采购单表（C1 基于所有门店订单汇总生成）
        if (! Schema::hasTable('purchase_order')) {
            Schema::create('purchase_order', function (Blueprint $table) {
                $table->increments('id')->comment('采购单ID');
                $table->string('purchase_no', 32)->unique()->comment('采购单编号');
                $table->date('purchase_date')->comment('采购日期');
                $table->integer('status')->default(0)->comment('采购单状态（0待发送 1部分发送 2全部发送 3已完成）');
                $table->decimal('total_quantity', 10, 2)->default(0)->comment('采购总量');
                $table->decimal('total_weight', 10, 3)->default(0)->comment('采购总重量');
                $table->decimal('estimate_amount', 10, 2)->default(0)->comment('预估金额（按订货汇总）');
                $table->decimal('actual_amount', 10, 2)->default(0)->comment('实际采购金额');
                $table->integer('operator_id')->default(0)->comment('采购员（系统用户ID）');
                $table->string('remark', 255)->default('')->nullable()->comment('备注');
                $table->timestamps();
                $table->index(['purchase_date', 'status'], 'purchase_order_date_status_index');
                $table->comment('采购单表');
            });
        }
    }

    /**
     * Reverse the migrations.
     */
    public function down(): void
    {
        Schema::dropIfExists('purchase_order');
    }
};