<?php

namespace App\Services\Coach;

use App\Enums\WithdrawStatus;
use App\Models\MemberUser;
use App\Models\Wallet;
use App\Models\WalletTransRecord;
use App\Models\WalletWithdrawRecord;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;

class WalletService
{
    /**
     * 获取技师钱包信息
     *
     * @param  int  $userId  技师用户ID
     */
    public function getWallet(int $userId): array
    {
        try {
            // 加载用户和技师信息
            $user = MemberUser::with(['coach', 'coach.wallet'])->findOrFail($userId);
            abort_if(! $user->coach, 404, '技师信息不存在');

            // 获取技师钱包
            $wallet = $user->coach->wallet;

            // 获取钱包流水统计
            $statistics = $this->getWalletStatistics($wallet->id);

            return [
                'available_balance' => number_format($wallet->available_balance, 2, '.', ''), // 可用余额
                'frozen_amount' => number_format($wallet->frozen_amount, 2, '.', ''), // 冻结金额
                'total_income' => number_format($statistics['total_income'], 2, '.', ''), // 累计收入
                'total_withdraw' => number_format($statistics['total_withdraw'], 2, '.', ''), // 累计支出
                'today_income' => number_format($statistics['today_income'], 2, '.', ''), // 今日收入
                'month_income' => number_format($statistics['month_income'], 2, '.', ''), // 本月收入
                'last_month_income' => number_format($statistics['last_month_income'], 2, '.', ''), // 上月收入
            ];
        } catch (\Exception $e) {
            Log::error('获取技师钱包信息失败', [
                'user_id' => $userId,
                'error' => $e->getMessage(),
                'file' => $e->getFile(),
                'line' => $e->getLine(),
            ]);
            throw $e;
        }
    }

    /**
     * 获取钱包流水记录
     *
     * @param  int  $userId  技师用户ID
     * @param  array  $params  查询参数
     */
    public function getWalletRecords(int $userId, array $params): array
    {
        try {
            // 加载用户和技师信息(优化关联加载)
            $user = MemberUser::with(['coach', 'coach.wallet'])->findOrFail($userId);
            abort_if(! $user->coach, 404, '技师信息不存在');
            abort_if(! $user->coach->wallet, 404, '钱包信息不存在');

            // 构建查询
            $query = WalletTransRecord::where('wallet_id', $user->coach->wallet->id)
                // 修复参数名称错误
                ->when(isset($params['type']), function ($query) use ($params) {
                    return $query->where('trans_type', $params['type']);
                })
                // 优化日期查询
                ->when(isset($params['start_date']), function ($query) use ($params) {
                    return $query->whereDate('created_at', '>=', $params['start_date']);
                })
                ->when(isset($params['end_date']), function ($query) use ($params) {
                    return $query->whereDate('created_at', '<=', $params['end_date']);
                })
                // 添加金额范围筛选
                ->when(isset($params['min_amount']), function ($query) use ($params) {
                    return $query->where('amount', '>=', $params['min_amount']);
                })
                ->when(isset($params['max_amount']), function ($query) use ($params) {
                    return $query->where('amount', '<=', $params['max_amount']);
                })
                // 添加交易状态筛选
                ->when(isset($params['status']), function ($query) use ($params) {
                    return $query->where('state', $params['status']);
                })
                // 添加排序选项
                ->when(
                    isset($params['sort_field']) && isset($params['sort_order']),
                    function ($query) use ($params) {
                        return $query->orderBy(
                            $params['sort_field'],
                            $params['sort_order'] === 'desc' ? 'desc' : 'asc'
                        );
                    },
                    function ($query) {
                        return $query->orderBy('created_at', 'desc');
                    }
                );

            // 分页获取数据(添加字段选择)
            $records = $query->paginate(
                $params['per_page'] ?? 10,
                [
                    'id',
                    'trans_no',
                    'trans_type',
                    'amount',
                    'balance',
                    'owner_type',
                    'owner_id',
                    'remark',
                    'status',
                    'created_at',
                ],
                'page',
                $params['page'] ?? 1
            );

            // TODO: 处理格式化数据存在的枚举映射

            // 格式化数据
            $items = collect($records->items())->map(function ($record) {
                return [
                    'id' => $record->id,
                    'trans_no' => $record->trans_no,
                    'trans_type' => $this->formatTransType($record->trans_type),
                    'amount' => number_format($record->amount, 2, '.', ''),
                    'balance' => number_format($record->balance, 2, '.', ''),
                    'owner_type' => $this->formatOwnerType($record->owner_type),
                    'owner_id' => $record->owner_id,
                    'remark' => $record->remark,
                    'state' => $this->formatStatus($record->state),
                    'created_at' => $record->created_at->format('Y-m-d H:i:s'),
                ];
            });

            // 添加汇总信息
            $summary = [
                'total_income' => $query->where('amount', '>', 0)->sum('amount'),
                'total_expense' => abs($query->where('amount', '<', 0)->sum('amount')),
                'record_count' => $records->total(),
            ];

            return [
                'items' => $items,
                'total' => $records->total(),
                'summary' => $summary,
            ];
        } catch (\Exception $e) {
            Log::error('获取钱包流水记录失败', [
                'user_id' => $userId,
                'params' => $params,
                'error' => $e->getMessage(),
                'file' => $e->getFile(),
                'line' => $e->getLine(),
            ]);
            throw $e;
        }
    }

    /**
     * 技师钱包提现
     *
     * @param  int  $userId  技师用户ID
     * @param  array  $data  提现数据
     * @return array
     *
     * @throws \Exception
     */
    public function withdraw(int $userId, array $data)
    {
        return DB::transaction(function () use ($userId, $data) {
            try {
                // 获取用户和技师信息
                $user = MemberUser::with(['coach', 'coach.wallet'])->findOrFail($userId);
                abort_if(! $user->coach, 404, '技师信息不存在');
                abort_if(! $user->coach->wallet, 404, '钱包信息不存在');

                // 锁定钱包记录
                $wallet = Wallet::where('id', $user->coach->wallet->id)
                    ->lockForUpdate()
                    ->first();
                // TODO: 提现金额限制
                // 验证提现金额
                $amount = $data['amount'];
                abort_if($amount <= 100, 422, '提现金额必须大于100元');
                abort_if($amount > $wallet->available_balance, 422, '可提现余额不足');

                // 生成交易流水号
                $transNo = 'W' . date('YmdHis') . mt_rand(1000, 9999);

                // 创建提现记录
                $withdraw = WalletWithdrawRecord::create([
                    'wallet_id' => $wallet->id,                                // 钱包ID
                    'trans_no' => $transNo,                                    // 交易流水号
                    'amount' => $amount,                                       // 提现金额
                    'withdraw_type' => $data['withdraw_type'],                 // 提现方式(1:微信 2:支付宝 3:银行卡)
                    'withdraw_account' => $data['withdraw_account'],           // 提现账号
                    'withdraw_account_name' => $data['withdraw_account_name'], // 提现账户名称
                    'state' => WithdrawStatus::PROCESSING,                    // 提现状态
                ]);

                // TODO: 创建交易记录字段需关联枚举
                // 创建交易记录
                $record = WalletTransRecord::create([
                    'wallet_id' => $wallet->id,
                    'trans_no' => $transNo,
                    'trans_type' => 2, // 支出
                    'amount' => -$amount,
                    'before_balance' => $wallet->available_balance,
                    'after_balance' => $wallet->available_balance - $amount,
                    'owner_type' => WalletWithdrawRecord::class,
                    'owner_id' => $withdraw->id,
                    'remark' => '提现申请',
                    'state' => 2, // 处理中
                ]);

                // 冻结提现金额
                $wallet->decrement('available_balance', $amount);
                $wallet->increment('frozen_amount', $amount);

                // 记录日志
                \Log::info('技师提现申请成功', [
                    'user_id' => $userId,
                    'coach_id' => $user->coach->id,
                    'trans_no' => $transNo,
                    'amount' => $amount,
                    'wallet_id' => $wallet->id,
                ]);

                return [
                    'message' => '提现申请已提交',
                    'trans_no' => $transNo,
                    'amount' => number_format($amount, 2, '.', ''),
                    'state' => '处理中',
                ];
            } catch (\Exception $e) {
                \Log::error('技师提现申请失败', [
                    'user_id' => $userId,
                    'data' => $data,
                    'error' => $e->getMessage(),
                    'file' => $e->getFile(),
                    'line' => $e->getLine(),
                ]);
                throw $e;
            }
        });
    }

    /**
     * 格式化交易类型
     */
    private function formatTransType(int $type): string
    {
        return match ($type) {
            1 => '收入',
            2 => '支出',
            default => '未知',
        };
    }

    /**
     * 格式化来源类型
     */
    private function formatOwnerType(string $type): string
    {
        return match ($type) {
            'order' => '订单',
            'withdraw' => '提现',
            'refund' => '退款',
            'system' => '系统',
            default => '其他',
        };
    }

    /**
     * 格式化状态
     */
    private function formatStatus(int $status): string
    {
        return match ($status) {
            1 => '成功',
            2 => '处理中',
            3 => '失败',
            default => '未知',
        };
    }

    /**
     * 获取钱包流水统计
     *
     * @param  int  $walletId  钱包ID
     */
    private function getWalletStatistics(int $walletId): array
    {
        try {
            // 计算总收入和总支出
            $totals = WalletTransRecord::where('wallet_id', $walletId)
                ->selectRaw(expression: '
                    SUM(CASE WHEN amount > 0 THEN amount ELSE 0 END) as total_income,
                    ABS(SUM(CASE WHEN amount < 0 THEN amount ELSE 0 END)) as total_withdraw
                ')->first();

            // 计算今日收入
            $todayIncome = WalletTransRecord::where('wallet_id', $walletId)
                ->where('amount', '>', 0)
                ->whereDate('created_at', operator: today())
                ->sum('amount');

            // 计算本月收入
            $monthIncome = WalletTransRecord::where('wallet_id', $walletId)
                ->where('amount', '>', 0)
                ->whereYear('created_at', now()->year)
                ->whereMonth('created_at', now()->month)
                ->sum('amount');

            // 计算上月收入
            $lastMonthIncome = WalletTransRecord::where('wallet_id', $walletId)
                ->where('amount', '>', 0)
                ->whereYear('created_at', now()->subMonth()->year)
                ->whereMonth('created_at', now()->subMonth()->month)
                ->sum('amount');

            return [
                'total_income' => $totals->total_income ?? 0,
                'total_withdraw' => $totals->total_withdraw ?? 0,
                'today_income' => $todayIncome,
                'month_income' => $monthIncome,
                'last_month_income' => $lastMonthIncome,
            ];
        } catch (\Exception $e) {
            Log::error('获取钱包统计信息失败', [
                'wallet_id' => $walletId,
                'error' => $e->getMessage(),
            ]);

            return [
                'total_income' => 0,
                'total_withdraw' => 0,
                'today_income' => 0,
                'month_income' => 0,
                'last_month_income' => 0,
            ];
        }
    }
}