<?php

namespace App\Services\Coach;

use App\Enums\OrderType;
use App\Models\AgentInfo;
use App\Models\MemberUser;
use App\Models\Order;
use App\Models\Wallet;
use App\Models\WalletSplitRecord;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;

class CommissionService
{
    // 分佣比例配置
    private const COMMISSION_RATES = [
        'travel' => [
            'coach' => 0.9,
            'platform' => 0.1,
        ],
        'service' => [
            'normal' => 0.5,
            'overtime' => 0.7,
        ],
        'inviter' => [
            'first' => 0.2,
            'second' => 0.1,
        ],
        'profit' => [
            'agent' => 0.4,
            'platform' => 0.4,
            'platform_no_agent' => 1.0,
        ],
    ];

    /**
     * 处理订单分佣
     */
    public function handleOrderCommission(Order $order): void
    {
        DB::transaction(function () use ($order) {
            try {
                // 处理路费分佣
                $this->handleTravelCommission($order);

                // 处理服务费分佣
                $profitAmount = $this->handleServiceCommission($order);

                // 处理邀请人分佣
                $inviterAmount = $this->handleInviterCommission($order, $profitAmount);

                // 处理代理商和平台分佣
                $this->handleAgentAndPlatformCommission($order, $profitAmount, $inviterAmount);

            } catch (\Exception $e) {
                Log::error('订单分佣失败', [
                    'order_id' => $order->id,
                    'error' => $e->getMessage(),
                    'trace' => $e->getTraceAsString(),
                ]);
                throw $e;
            }
        });
    }

    /**
     * 处理路费分佣
     */
    private function handleTravelCommission(Order $order): void
    {
        $travelAmount = $order->travel_amount;
        if ($travelAmount <= 0) {
            return;
        }

        // 技师路费分佣
        $coachRate = self::COMMISSION_RATES['travel']['coach'];
        $coachAmount = bcmul($travelAmount, $coachRate, 2);
        $this->updateWalletBalance($order->coach->wallet, $coachAmount, $order, 'coach', '技师路费分账');

        // 平台路费分佣
        $platformRate = self::COMMISSION_RATES['travel']['platform'];
        $platformAmount = bcmul($travelAmount, $platformRate, 2);
        $platformWallet = Wallet::where('owner_type', 'platform')->first();
        $this->updateWalletBalance($platformWallet, $platformAmount, $order, 'platform', '平台路费分账');

        Log::info('路费分佣完成', [
            'order_id' => $order->id,
            'travel_amount' => $travelAmount,
            'coach_amount' => $coachAmount,
            'platform_amount' => $platformAmount,
        ]);
    }

    /**
     * 处理服务费分佣
     */
    private function handleServiceCommission(Order $order): float
    {
        // 计算服务费(总金额减去路费)
        $serviceAmount = bcsub($order->amount, $order->travel_amount ?? 0, 2);

        // 获取分佣比例
        $rate = $order->type === OrderType::OVERTIME->value
            ? self::COMMISSION_RATES['service']['overtime']
            : self::COMMISSION_RATES['service']['normal'];

        // 计算技师分佣金额
        $commissionAmount = bcmul($serviceAmount, $rate, 2);

        // 更新技师钱包
        $this->updateWalletBalance(
            $order->coach->wallet,
            $commissionAmount,
            $order,
            'coach',
            '技师服务佣金分账'
        );

        // 计算平台利润
        $profitAmount = bcsub($serviceAmount, $commissionAmount, 2);

        Log::info('服务费分佣完成', [
            'order_id' => $order->id,
            'service_amount' => $serviceAmount,
            'commission_rate' => $rate,
            'commission_amount' => $commissionAmount,
            'profit_amount' => $profitAmount,
        ]);

        return $profitAmount;
    }

    /**
     * 处理邀请人分佣
     */
    private function handleInviterCommission(Order $order, float $profitAmount): float
    {
        $totalInviterAmount = 0;

        $user = MemberUser::with('inviter')->find($order->user_id);
        if (! $user || ! $user->inviter) {
            return $totalInviterAmount;
        }

        // 一级邀请人分佣
        $firstInviterAmount = $this->processInviter(
            $user->inviter,
            $profitAmount,
            self::COMMISSION_RATES['inviter']['first'],
            $order,
            '邀请人分账'
        );
        $totalInviterAmount = bcadd($totalInviterAmount, $firstInviterAmount, 2);

        // 二级邀请人分佣
        $secondInviter = $this->getSecondInviter($user);
        if ($secondInviter) {
            $secondInviterAmount = $this->processInviter(
                $secondInviter,
                $profitAmount,
                self::COMMISSION_RATES['inviter']['second'],
                $order,
                '二级邀请人分账'
            );
            $totalInviterAmount = bcadd($totalInviterAmount, $secondInviterAmount, 2);
        }

        return $totalInviterAmount;
    }

    /**
     * 处理代理商和平台分佣
     */
    private function handleAgentAndPlatformCommission(Order $order, float $profitAmount, float $inviterAmount): void
    {
        // 计算分佣基数
        $baseAmount = bcsub($profitAmount, $inviterAmount, 2);

        if ($order->agent_id) {
            // 代理商分佣
            $agentRate = self::COMMISSION_RATES['profit']['agent'];
            $agentAmount = bcmul($baseAmount, $agentRate, 2);

            $agent = AgentInfo::find($order->agent_id);
            $this->updateWalletBalance($agent->wallet, $agentAmount, $order, 'agent', '代理商分账');

            // 平台分佣
            $platformRate = self::COMMISSION_RATES['profit']['platform'];
            $platformAmount = bcmul($baseAmount, $platformRate, 2);
        } else {
            // 无代理商时平台获取全部收益
            $platformRate = self::COMMISSION_RATES['profit']['platform_no_agent'];
            $platformAmount = bcmul($baseAmount, $platformRate, 2);
        }

        // 记录平台分账
        $this->createSplitRecord($order->id, 1, 'platform_commission', $baseAmount, $platformRate, $platformAmount, '平台分账');
    }

    /**
     * 更新钱包余额并记录
     */
    private function updateWalletBalance(Wallet $wallet, float $amount, Order $order, string $role, string $remark): void
    {
        $wallet->increment('total_balance', $amount);
        $wallet->increment('available_balance', $amount);
        $wallet->save();

        // 记录交易
        $wallet->transRecords()->create([
            'wallet_id' => $wallet->id,
            'owner_id' => $order->id,
            'owner_type' => Order::class,
            'role' => $role,
            'trans_type' => 1,
            'storage_type' => 'balance',
            'amount' => $amount,
            'before_balance' => $wallet->available_balance - $amount,
            'after_balance' => $wallet->available_balance,
            'before_recharge_balance' => $wallet->recharge_balance,
            'after_recharge_balance' => $wallet->recharge_balance,
        ]);
    }

    /**
     * 创建分账记录
     */
    private function createSplitRecord(int $orderId, int $ruleId, string $splitType, float $amount, float $ratio, float $splitAmount, string $remark): void
    {
        WalletSplitRecord::create([
            'order_id' => $orderId,
            'rule_id' => $ruleId,
            'split_type' => $splitType,
            'amount' => $amount,
            'split_ratio' => $ratio,
            'split_amount' => $splitAmount,
            'entry_time' => now(),
            'remark' => $remark,
            'state' => 1,
        ]);
    }
}