<?php

namespace App\Endpoint\Api\Http\Controllers;

use App\Endpoint\Api\Http\Resources\BargainActivityResource;
use App\Endpoint\Api\Http\Resources\BargainOrderResource;
use App\Endpoint\Api\Http\Resources\OrderResource;
use App\Events\OrderPaid;
use App\Exceptions\BizException;
use App\Models\BargainActivity;
use App\Models\BargainOrder;
use App\Models\BargainSku;
use App\Models\ProductSku;
use App\Services\BargainService;
use App\Services\OrderService;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Throwable;

class BargainController extends Controller
{
    /**
     *
     *
     * @param \Illuminate\Http\Request $request
     * @return void
     */
    public function activityDetail($id)
    {
        $activity = BargainActivity::with('skus')->findOrFail($id);
        if (!$activity->is_enable) {
            throw new BizException('砍价活动暂未开始');
        }
        if ($activity->start_at > now() || $activity->end_at < now()) {
            throw new BizException('不在活动时间范围');
        }

        return BargainActivityResource::make($activity);
    }

    /**
     * 通过砍价商品查看当前砍价记录
     *
     * @param [type] $id
     * @param Request $request
     * @return void
     */
    public function bargainSku($id)
    {
        //判断商品是否参与砍价
        $bargainSku = BargainSku::with(['activity'=>function ($query) {
            return $query->where('is_enable', true)->where('start_at', '<=', now())->where('end_at', '>=', now());
        }, 'sku'])->where('sku_id', $id)->first();

        if (!($bargainSku && $bargainSku->activity)) {
            throw new BizException('该商品未参与砍价活动，或者活动已结束');
        }

        return response()->json([
            'sku' => [
                'name' => (string) $bargainSku->sku->name,
                'subtitle' => (string) $bargainSku->sku->subtitle,
                'cover' => (string) $bargainSku->sku->cover,
                'sell_price' => (string) $bargainSku->sku->sell_price_format,
                'vip_price' => (string) $bargainSku->sku->vip_price_format,
            ],
            'max_bargain_price'=> array_sum(json_decode($bargainSku->activity->rules)),
            'activity_id' => $bargainSku->activity->id,
            'activity_images'  => $bargainSku->activity->images,
            'activity_share_image'=> $bargainSku->activity->share_image,
            'activity_share_title'=> $bargainSku->activity->share_title,
        ]);
    }

    /**
     * 通过商品获取当前砍价进度（看自己的）
     *
     * @param Request $request
     * @return void
     */
    public function barginaOrderBySku($id, Request $request)
    {
        // $order = [];
        $user = $request->user();
        $userId = $user?->id ?? 0;
        $order = BargainOrder::with(['logs', 'logs.userInfo'])
            ->where([
                'sku_id' => $id,
                'user_id'=> $userId,
            ])->where('status', '>', 0)
            ->where('expire_at', '>', now())
            ->whereNull('order_id')
            ->orderBy('created_at', 'desc')->first();
        if ($order) {
            return BargainOrderResource::make($order);
        }
        return response()->noContent();
    }

    /**
     * 通过订单ID获取当前砍价进度（看别人的）
     *
     * @param Request $request
     * @return void
     */
    public function bargainOrderById($id, Request $request)
    {
        $order = BargainOrder::with(['logs', 'logs.userInfo'])
            ->where([
                'id' => $id,
            ])->where('status', '>', 0)
            ->where('expire_at', '>', now())
            ->whereNull('order_id')
            ->orderBy('created_at', 'desc')->first();
        if ($order) {
            return BargainOrderResource::make($order);
        }
        return response()->noContent();
    }

    /**
     * 发起砍价
     *
     * @param [type] $id
     * @param Request $request
     * @return void
     */
    public function createBargainOrder(ProductSku $sku, Request $request)
    {
        if (!$sku->isBargaing()) {
            throw new BizException('活动已结束');
        }
        //判断是否已经有正在进行的砍价单, 直接返回
        $order = BargainOrder::where([
                'sku_id' => $sku->id,
                'user_id'=> $request->user()->id,
            ])->where('status', '>', 0)
            ->where('expire_at', '>', now())
            ->whereNull('order_id')
            ->orderBy('created_at', 'desc')->first();

        if (!$order) {
            //创建新的砍价单
            $bargainService = new BargainService();
            try {
                DB::beginTransaction();
                $order = $bargainService->createBargainOrder($request->user(), $sku);
                DB::commit();
            } catch (Throwable $th) {
                DB::rollBack();
                report($th);
                throw new BizException($th->getMessage());
            }
        }

        $order->load(['logs', 'logs.userInfo']);
        return BargainOrderResource::make($order);
    }

    /**
     * 帮人砍价
     *
     * @param BargainOrder $order
     * @param Request $request
     * @return void
     */
    public function bargain(BargainOrder $order, Request $request)
    {
        $bargainService = new BargainService();
        try {
            DB::beginTransaction();
            $bargainService->bargain($request->user(), $order);
            DB::commit();
        } catch (Throwable $th) {
            DB::rollBack();
            report($th);
            throw new BizException($th->getMessage());
        }

        $order->load(['logs', 'logs.userInfo']);
        return BargainOrderResource::make($order);
    }

    /**
     * 通过砍价订单创建待支付商城订单
     *
     * @param BargainOrder $bargainOrder
     * @param Request $request
     * @return void
     */
    public function createMallOrderByBargainOrder(BargainOrder $bargainOrder, Request $request)
    {
        $rules = [
            'shipping_address_id' => ['bail', 'required', 'int'],
            'note' => ['bail', 'nullable', 'string', 'max:255'],
        ];
        $input = $request->validate($rules, [], [
            'shipping_address_id' => '收货地址',
            'note' => '订单备注',
        ]);
        $user = $request->user();
        if ($user->id != $bargainOrder->user_id) {
            throw new BizException('您不能替别人下单');
        }

        $orderService = new OrderService();
        try {
            DB::beginTransaction();
            $bargainOrder->lockForUpdate();//下单的时候不允许砍价了

            //已下单
            if ($bargainOrder->order_id > 0) {
                throw new BizException('您已下单，无需重复下单');
            }

            //砍价超时
            if ($bargainOrder->expire_at < now()) {
                throw new BizException('当前砍价已结束，无法下单');
            }

            //如果砍价活动结束了，也不能砍了
            $activity = $bargainOrder->sku->isBargaing();
            if (!$activity) {
                throw new BizException('当前砍价已结束，无法下单');
            }

            $order = $orderService->createQuickOrder(
                $user,
                $bargainOrder->sku_id,
                1,
                $input['shipping_address_id'],
                null,
                $input['note'] ?? null,
                $bargainOrder
            );
            $bargainOrder->update([
                'order_id' => $order->id,
            ]);
            DB::commit();
        } catch (Throwable $th) {
            DB::rollBack();
            report($th);
            throw new BizException($th->getMessage());
        }

        OrderPaid::dispatchIf($order->isPaid(), $order);

        return OrderResource::make($order);
    }
}