<?php

namespace App\Services\Coach;

use App\Models\MemberUser;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;

class CoachFlowService
{
    /**
     * 创建投流订单
     *
     * @param  int  $userId  用户ID
     * @param  array  $params  订单参数
     * @return array
     */
    public function createOrder(int $userId, array $params)
    {
        try {
            return DB::transaction(function () use ($params, $userId) {
                // 查询用户信息
                $user = MemberUser::findOrFail($userId);

                // 验证用户是否为教练
                abort_if(! $user->coach, 403, '非教练用户无法创建投流订单');

                // 验证时间段参数
                abort_if(! in_array($params['time_slot'], [1, 2, 3]), 422, '无效的时间段');

                // 验证天数参数
                $validDays = [1, 7, 15, 30, 90, 180, 365];
                abort_if(! in_array($params['days'], $validDays), 422, '无效的天数');

                // 验证位置类型
                abort_if(! in_array($params['position_type'], [1, 2]), 422, '无效的位置类型');

                // 计算订单金额
                $amount = $this->calculateAmount($params['time_slot'], $params['days']);

                // 生成订单号
                $orderNo = $this->generateOrderNo();

                // 创建订单
                $order = $user->coach->flowOrders()->create([
                    'order_no' => $orderNo,
                    'coach_id' => $user->id,
                    'position_type' => $params['position_type'],
                    'time_slot' => $params['time_slot'],
                    'days' => $params['days'],
                    'amount' => $amount,
                    'state' => 0,
                    'start_time' => null,
                    'end_time' => null,
                ]);

                Log::info('创建投流订单成功', [
                    'order_id' => $order->id,
                    'order_no' => $orderNo,
                    'user_id' => $userId,
                    'amount' => $amount,
                    'params' => $params,
                ]);

                return [
                    'order_id' => $order->id,
                    'order_no' => $orderNo,
                    'amount' => number_format($amount, 2),
                ];
            });
        } catch (\Exception $e) {
            Log::error('创建投流订单失败', [
                'message' => $e->getMessage(),
                'user_id' => $userId,
                'params' => $params,
                'trace' => $e->getTraceAsString(),
            ]);
            throw new \Exception('创建订单失败:'.$e->getMessage());
        }
    }

    /**
     * 生成订单号
     */
    private function generateOrderNo(): string
    {
        return 'FL'.date('YmdHis').mt_rand(1000, 9999);
    }

    /**
     * 获取价格配置
     */
    public function getPriceConfig()
    {
        return [
            'time_slots' => [
                ['type' => 1, 'name' => '上午', 'time' => '6:00~12:00', 'price' => 4],
                ['type' => 2, 'name' => '下午', 'time' => '12:00~18:00', 'price' => 6],
                ['type' => 3, 'name' => '晚上', 'time' => '18:00~6:00', 'price' => 8],
            ],
            'days' => [
                ['days' => 1, 'price' => 12],
                ['days' => 7, 'price' => 53],
                ['days' => 15, 'price' => 99],
                ['days' => 30, 'price' => 160],
                ['days' => 90, 'price' => 430],
                ['days' => 180, 'price' => 760],
                ['days' => 365, 'price' => 1360],
            ],
        ];
    }

    /**
     * 计算订单金额
     */
    private function calculateAmount($timeSlot, $days)
    {
        $dayPrice = 0;
        switch ($timeSlot) {
            case 1:
                $dayPrice = 4;
                break;
            case 2:
                $dayPrice = 6;
                break;
            case 3:
                $dayPrice = 8;
                break;
        }

        $totalPrice = 0;
        switch ($days) {
            case 1:
                $totalPrice = 12;
                break;
            case 7:
                $totalPrice = 53;
                break;
            case 15:
                $totalPrice = 99;
                break;
            case 30:
                $totalPrice = 160;
                break;
            case 90:
                $totalPrice = 430;
                break;
            case 180:
                $totalPrice = 760;
                break;
            case 365:
                $totalPrice = 1360;
                break;
        }

        return $totalPrice;
    }
}