<?php

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

return new class extends Migration
{
    /**
     * Run the migrations.
     * 门店账单：采购单完成后按门店生成；周转筐/托盘与附加金额从门店订单迁入账单
     * （store_order 的列变动已按约定折进 2026_07_23_030610 原迁移文件，本文件仅建账单表）
     */
    public function up(): void
    {
        // 门店账单表（每个客户单独一张，商品金额由订单汇总不可修改）
        if (! Schema::hasTable('bill')) {
            Schema::create('bill', function (Blueprint $table) {
                $table->increments('id')->comment('账单ID');
                $table->string('bill_no', 32)->unique()->comment('账单编号');
                $table->integer('purchase_id')->comment('关联采购单ID');
                $table->integer('store_id')->comment('门店ID');
                $table->date('bill_date')->comment('账单日期');
                $table->decimal('product_amount', 10, 2)->default(0)->comment('商品金额（订单商品金额汇总，不可修改）');
                $table->decimal('delivery_fee', 10, 2)->default(0)->comment('配送费（生成账单时填写）');
                $table->integer('box_num')->default(0)->comment('周转筐数量');
                $table->integer('tray_num')->default(0)->comment('周转托盘数量');
                $table->decimal('box_price', 10, 2)->default(0)->comment('周转筐单价（生成时快照）');
                $table->decimal('tray_price', 10, 2)->default(0)->comment('周转托盘单价（生成时快照）');
                $table->decimal('added_amount', 10, 2)->default(0)->comment('附加金额（周转筐/托盘金额）');
                $table->decimal('total_amount', 10, 2)->default(0)->comment('账单总金额 = 商品金额 + 配送费 + 附加金额 + 售后金额');
                $table->integer('status')->default(0)->comment('支付状态（0未支付 1已支付）');
                $table->integer('payment_id')->default(0)->comment('关联支付记录ID（0=未发起支付）');
                $table->timestamp('paid_at')->nullable()->comment('付款时间（线下收款手动登记）');
                $table->string('pay_remark', 255)->default('')->comment('付款备注（线下收款信息）');
                $table->integer('paid_operator_id')->default(0)->comment('收款操作人（后台系统用户ID）');
                $table->integer('operator_id')->default(0)->comment('生成人（后台系统用户ID）');
                $table->string('remark', 255)->nullable()->default('')->comment('备注（生成账单时按门店填写）');
                $table->decimal('after_sale', 10, 2)->default(0)->comment('售后金额（生成账单时按门店填写，可正负，计入总金额）');
                $table->timestamps();
                $table->unique(['purchase_id', 'store_id'], 'bill_purchase_store_unique');
                $table->index(['store_id', 'bill_date'], 'bill_store_date_index');
                $table->index(['status'], 'bill_status_index');
                $table->index(['payment_id'], 'bill_payment_index');
                $table->comment('门店账单表（采购单完成后按门店生成）');
            });
        }
    }

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