<?php

namespace App\Services\Dealer;

use App\Enums\DealerDeliveryBillStatus;
use App\Enums\DealerWalletAction;
use App\Enums\PayWay;
use App\Enums\WxpayTradeType;
use App\Exceptions\BizException;
use App\Models\DealerDeliveryBill;
use App\Models\DealerDeliveryProduct;
use App\Models\DealerOrder;
use App\Models\DealerOrderProduct;
use App\Models\DealerProduct;
use App\Models\DealerUserProduct;
use App\Models\DealerUserProductLog;
use App\Models\PayLog;
use App\Models\User;
use App\Services\Payment\WxpayService;
use App\Services\PayService;
use Illuminate\Support\Arr;
use Illuminate\Support\Facades\DB;

class DealerDeliveryBillService
{
    /**
     * 创建提货单
     *
     * @param \App\Models\User $user
     * @param array $deliveryProducts
     * @param array $consignee
     * @param string|null $remark
     * @param int|null $DealerOrder
     * @return \App\Models\DealerDeliveryBill
     */
    public function create(User $user, array $deliveryProducts, array $consignee, ?string $remark = null, ?DealerOrder $dealerOrder = null): DealerDeliveryBill
    {
        $deliveryProductIds = Arr::pluck($deliveryProducts, 'id');

        // 批零商品
        $products = DealerProduct::findMany($deliveryProductIds);

        if (count($deliveryProducts) !== $products->count()) {
            throw new BizException('提货单商品已丢失');
        }

        // 经销商的商品库存
        $dealerProducts = $user->dealerProducts()
                            ->whereIn('product_id', $deliveryProductIds)
                            ->get();

        // 创建提货单
        $deliveryBill = DealerDeliveryBill::create([
            'user_id' => $user->id,
            'shipping_fee' => app_settings('dealer.delivery_bill_shipping_fee', 0),
            'remark' => $remark,
            'consignee_name' => $consignee['name'],
            'consignee_telephone' => $consignee['telephone'],
            'consignee_zone' => $consignee['zone'],
            'consignee_address' => $consignee['address'],
            'status' => DealerDeliveryBillStatus::Pending,
            'order_id' => $dealerOrder?->id,
        ]);

        $mapProducts = $products->keyBy('id');
        $mapDealerProducts = $dealerProducts->keyBy('product_id');

        $dealerProductLogs = [];
        $deliveryBillProducts = [];

        foreach ($deliveryProducts as $deliveryProduct) {
            $product = Arr::get($mapProducts, $deliveryProduct['id']);
            $dealerProduct = Arr::get($mapDealerProducts, $product->id);

            if ($dealerProduct?->deposit_stock < $deliveryProduct['qty']) {
                throw new BizException("{$product->name} 库存不足");
            }

            $dealerProduct->decrement('deposit_stock', $deliveryProduct['qty']);

            $dealerProductLogs[] = [
                'user_id' => $dealerProduct->user_id,
                'product_id' => $dealerProduct->product_id,
                'type' => DealerUserProductLog::TYPE_DEPOSIT_TRANSFER_OUT,
                'qty' => $deliveryProduct['qty'],
                'remark' => "提货单【{$deliveryBill->sn}】",
                'is_deposit' => true,
                'created_at' => $deliveryBill->created_at,
                'updated_at' => $deliveryBill->updated_at,
            ];

            $deliveryBillProducts[] = [
                'delivery_bill_id' => $deliveryBill->id,
                'product_id' => $product->id,
                'qty' => $deliveryProduct['qty'],
                'created_at' => $deliveryBill->created_at,
                'updated_at' => $deliveryBill->updated_at,
            ];
        }

        DealerUserProductLog::insert($dealerProductLogs);

        DealerDeliveryProduct::insert($deliveryBillProducts);

        return $deliveryBill;
    }

    /**
     * 提货单付款
     *
     * @param \App\Models\DealerDeliveryBill $deliveryBill
     * @param \App\Enums\PayWay $payWay
     * @return array
     *
     * @throws \App\Exceptions\BizException
     */
    public function pay(DealerDeliveryBill $deliveryBill, PayWay $payWay): array
    {
        if (! $deliveryBill->isPending()) {
            throw new BizException('提货单状态不是待付款');
        }

        $method = match ($payWay) {
            PayWay::Wallet => 'payUsingWallet',
            PayWay::WxpayH5, PayWay::WxpayJsApi => 'payUsingWxpay',
            default => 'payUsingDefault',
        };

        if (! method_exists($this, $method)) {
            throw new BizException('交易非法');
        }

        $payLog = $deliveryBill->payLogs()->create([
            'pay_way' => $payWay,
        ]);

        return [
            'pay_way' => $payLog->pay_way,
            'data' => $this->{$method}($deliveryBill, $payLog),
        ];
    }

    /**
     * 取消提货单
     *
     * @param DealerDeliveryBill $deliveryBill
     * @return void
     */
    public function cancel(DealerDeliveryBill $deliveryBill)
    {
        if (! $deliveryBill->isPending()) {
            throw new BizException('提货单状态不是待付款');
        }

        $deliveryBill->update([
            'status' => DealerDeliveryBillStatus::Cancelled,
        ]);

        $dealerProductLogs = [];

        foreach ($deliveryBill->deliveryProducts as $deliveryProduct) {
            DealerUserProduct::where([
                'user_id' => $deliveryBill->user_id,
                'product_id' => $deliveryProduct->product_id,
            ])->update([
                'deposit_stock' => DB::raw("deposit_stock + {$deliveryProduct->qty}"),
            ]);

            $dealerProductLogs[] = [
                'user_id' => $deliveryBill->user_id,
                'product_id' => $deliveryProduct->product_id,
                'type' => DealerUserProductLog::TYPE_DEPOSIT_TRANSFER_REVOKE,
                'qty' => $deliveryProduct->qty,
                'remark' => "撤销提货单【{$deliveryBill->sn}】",
                'is_deposit' => true,
                'created_at' => $deliveryBill->updated_at,
                'updated_at' => $deliveryBill->updated_at,
            ];
        }

        //撤回已发货的本地库存
        if ($deliveryBill->order_id) {
            $dealerOrder = DealerOrder::with('products')->find($deliveryBill->order_id);
            foreach ($dealerOrder->products as $product) {
                if ($product->qty > 0 && $dealerOrder->local_status == 1) {
                    $userProduct = $dealerOrder->consignor->dealerProducts()->firstOrCreate([
                        'product_id'=> $product->product_id,
                    ]);
                    $userProduct->increment('stock', $product->qty);
                    $dealerProductLogs[] = [
                        'user_id' => $dealerOrder->consignor_id,
                        'product_id' => $product->product_id,
                        'type' => DealerUserProductLog::TYPE_ORDER_OUT_REVOKE,
                        'qty' => $product->qty,
                        'remark' => "撤销订单发货【{$dealerOrder->sn}】",
                        'is_deposit' => false,
                        'created_at' => $deliveryBill->updated_at,
                        'updated_at' => $deliveryBill->updated_at,
                    ];
                }
                //将云仓发货的数量挪回来
                DealerOrderProduct::where('id', $product->id)->update([
                    'qty' => $product->qty + $product->deposit_qty,
                    'deposit_qty' => 0,
                ]);
            }
            $dealerOrder->update([
                'local_status'=>0,
            ]);
        }

        DealerUserProductLog::insert($dealerProductLogs);
    }

    /**
     * 使用余额支付
     *
     * @param \App\Models\DealerDeliveryBill $deliveryBill
     * @param \App\Models\PayLog $payLog
     * @return void
     */
    protected function payUsingWallet(DealerDeliveryBill $deliveryBill, PayLog $payLog)
    {
        (new WalletService())->changeBalance(
            $deliveryBill->user,
            bcmul($deliveryBill->shipping_fee, '-1', 2),
            DealerWalletAction::DeliveryBillPaid,
            "提货单号：{$deliveryBill->sn}",
            $deliveryBill
        );

        (new PayService())->handleSuccess($payLog, [
            'pay_at' => now(),
        ]);
    }

    /**
     * 使用微信支付
     *
     * @param \App\Models\DealerDeliveryBill $deliveryBill
     * @param \App\Models\PayLog $payLog
     * @return array
     */
    protected function payUsingWxpay(DealerDeliveryBill $deliveryBill, PayLog $payLog): array
    {
        if (is_null($tradeType = WxpayTradeType::tryFromPayWay($payLog->pay_way))) {
            throw new BizException('支付方式 非法');
        }

        $params = [
            'body' => app_settings('app.app_name').'-批零订单',
            'out_trade_no' => $payLog->pay_sn,
            'total_fee' => bcmul($deliveryBill->shipping_fee, '100'),
            'trade_type' => $tradeType->value,
        ];

        return (new WxpayService())->pay($params, 'yzk_h5');
    }
}