<?php

namespace App\Http\Controllers;

use App\Models\Order;
use App\Models\OrderItem;
use App\Models\Stock;
use App\Models\StockLog;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Str;

class OrderController extends Controller
{
    /**
     * 订单列表
     */
    public function index(Request $request)
    {
        $query = Order::with(['items', 'warehouse'])
            ->orderBy('created_at', 'desc');

        if ($request->filled('platform')) {
            $query->where('platform', $request->platform);
        }
        if ($request->filled('shop_id')) {
            $query->where('shop_id', $request->shop_id);
        }
        if ($request->filled('order_status')) {
            $query->where('order_status', $request->order_status);
        }
        if ($request->filled('audit_status')) {
            $query->where('audit_status', $request->audit_status);
        }
        if ($request->filled('delivery_status')) {
            $query->where('delivery_status', $request->delivery_status);
        }
        if ($request->filled('keyword')) {
            $keyword = $request->keyword;
            $query->where(function ($q) use ($keyword) {
                $q->where('short_id', 'like', "%{$keyword}%")
                  ->orWhere('platform_order_sn', 'like', "%{$keyword}%")
                  ->orWhere('receiver_name', 'like', "%{$keyword}%")
                  ->orWhere('receiver_phone', 'like', "%{$keyword}%");
            });
        }
        if ($request->filled('date_range')) {
            $dates = explode(',', $request->date_range);
            if (count($dates) === 2) {
                $query->whereBetween('order_time', [$dates[0], $dates[1]]);
            }
        }

        $perPage = $request->input('limit', 10);
        $orders = $query->paginate($perPage);

        return response()->json([
            'code' => 200,
            'data' => [
                'list' => $orders->items(),
                'total' => $orders->total(),
                'current_page' => $orders->currentPage(),
                'last_page' => $orders->lastPage(),
            ],
            'message' => 'success'
        ]);
    }

    /**
     * 订单详情
     */
    public function show(string $id)
    {
        $order = Order::with(['items', 'warehouse'])->find($id);

        if (!$order) {
            return response()->json(['code' => 404, 'message' => '订单不存在'], 404);
        }

        return response()->json(['code' => 200, 'data' => $order, 'message' => 'success']);
    }

    /**
     * 拉取订单（模拟）
     */
    public function pull(Request $request)
    {
        $request->validate([
            'platform' => 'required|string',
            'shop_id' => 'required|integer',
            'pull_type' => 'required|in:all,increment,specify',
            'order_ids' => 'required_if:pull_type,specify|string',
            'start_time' => 'nullable|date',
            'end_time' => 'nullable|date',
        ]);

        $mockOrders = [
            [
                'platform_order_sn' => 'TEST' . Str::random(10),
                'order_time' => now()->toDateTimeString(),
                'buyer_nick' => '测试买家',
                'receiver_name' => '张三',
                'receiver_phone' => '13800138000',
                'receiver_address' => '测试地址',
                'goods_amount' => 199.00,
                'discount_amount' => 0,
                'freight' => 10.00,
                'total_amount' => 209.00,
                'platform_status' => 'WAIT_SELLER_SEND_GOODS',
                'items' => [
                    [
                        'goods_name' => '测试商品',
                        'platform_sku' => 'SKU001',
                        'quantity' => 1,
                        'price' => 199.00,
                        'total_amount' => 199.00,
                    ]
                ]
            ]
        ];

        $createdCount = 0;

        try {
            DB::beginTransaction();

            foreach ($mockOrders as $orderData) {
                $shortId = 'O' . date('Ymd') . strtoupper(Str::random(6));

                $order = Order::create([
                    'short_id' => $shortId,
                    'platform_order_sn' => $orderData['platform_order_sn'],
                    'platform' => $request->platform,
                    'shop_id' => $request->shop_id,
                    'shop_name' => '测试店铺',
                    'order_time' => $orderData['order_time'],
                    'buyer_nick' => $orderData['buyer_nick'],
                    'receiver_name' => $orderData['receiver_name'],
                    'receiver_phone' => $orderData['receiver_phone'],
                    'receiver_address' => $orderData['receiver_address'],
                    'goods_amount' => $orderData['goods_amount'],
                    'discount_amount' => $orderData['discount_amount'],
                    'freight' => $orderData['freight'],
                    'total_amount' => $orderData['total_amount'],
                    'order_status' => 'pending',
                    'platform_status' => $orderData['platform_status'],
                    'audit_status' => 'pending',
                    'delivery_status' => 'pending',
                ]);

                foreach ($orderData['items'] as $itemData) {
                    OrderItem::create([
                        'order_id' => $order->id,
                        'goods_name' => $itemData['goods_name'],
                        'platform_sku' => $itemData['platform_sku'],
                        'quantity' => $itemData['quantity'],
                        'price' => $itemData['price'],
                        'total_amount' => $itemData['total_amount'],
                    ]);
                }

                $createdCount++;
            }

            DB::commit();

            return response()->json([
                'code' => 200,
                'data' => ['count' => $createdCount],
                'message' => "成功拉取 {$createdCount} 个订单"
            ]);
        } catch (\Exception $e) {
            DB::rollBack();
            return response()->json([
                'code' => 500,
                'message' => '拉取失败: ' . $e->getMessage()
            ], 500);
        }
    }

    // 其他必要方法（如 batchAudit、auditOrder、shipOrder 等）可以从原控制器中保留，但为了简洁，此处省略
    // 您可以根据需要补充，确保其他接口不报错。
}