<?php

declare(encoding='UTF-8');

namespace App\Services\Coach;

use App\Enums\TechnicianAuthStatus;
use App\Models\CoachInfoRecord;
use App\Models\CoachQualRecord;
use App\Models\CoachRealRecord;
use App\Models\CoachUser;
use App\Services\Third\AliRealAuthService;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Redis;

class AuthService
{
    // 缓存相关常量
    private const CACHE_KEY_PREFIX = 'coach_auth_';
    private const CACHE_TTL = 300; // 5分钟

    // 限流相关常量
    private const RATE_LIMIT_PREFIX = 'coach_auth_limit_';
    private const RATE_LIMIT_TTL = 86400; // 24小时
    private const MAX_ATTEMPTS = 5; // 每24小时最多提交5次

    protected ?CoachUser $coach;
    protected AliRealAuthService $aliRealAuthService;

    public function __construct(AliRealAuthService $aliRealAuthService)
    {
        $this->coach = Auth::user()->coach;
        $this->aliRealAuthService = $aliRealAuthService;
    }

    /**
     * 检查提交��数限制
     *
     * @param string $type 认证类型(basic_info/real_auth/qual_auth)
     * @throws \Exception 超出限制时抛出异常
     */
    private function checkRateLimit(string $type): void
    {
        $key = self::RATE_LIMIT_PREFIX . $this->coach->id . ':' . $type;
        $attempts = Redis::get($key) ?: 0;

        if ($attempts >= self::MAX_ATTEMPTS) {
            throw new \Exception('今日提交次数已达上限，请24小时后再试');
        }

        // 增加计数
        if ($attempts == 0) {
            Redis::setex($key, self::RATE_LIMIT_TTL, 1);
        } else {
            Redis::incr($key);
        }
    }

    /**
     * 提交基本信息认证
     *
     * @param array $data
     * @return array
     * @throws \Exception
     */
    public function submitBasicInfo(array $data): array
    {
        try {
            // 检查提交次数限制
            $this->checkRateLimit('basic_info');

            DB::beginTransaction();

            // 创建基本信息记录
            $infoRecord = CoachInfoRecord::create([
                'coach_id' => $this->coach->id,
                'nickname' => $data['nickname'],
                'avatar' => $data['avatar'],
                'gender' => (int)$data['gender'],
                'mobile' => $data['mobile'],
                'age' => $data['age'],
                'birthday' => $data['birthday'],
                'work_years' => $data['work_years'],
                'intention_city' => $data['intention_city'],
                'introduction' => $data['introduction'],
                'portrait_images' => $data['portrait_images'],
                'state' => TechnicianAuthStatus::AUDITING->value
            ]);

            // 清除认证缓存
            $this->clearAuthCache();

            DB::commit();

            return [
                'id' => $infoRecord->id,
                'state' => $infoRecord->state,
                'state_text' => TechnicianAuthStatus::fromValue($infoRecord->state)->label()
            ];
        } catch (\Exception $e) {
            DB::rollBack();
            $this->logError('提交基本信息认证失败', [], $e);
            throw $e;
        }
    }

    /**
     * 提交实名认证
     *
     * @param array $data
     * @return array
     * @throws \Exception
     */
    public function submitRealAuth(array $data): array
    {
        try {
            // 检查提交次数限制
            $this->checkRateLimit('real_auth');

            DB::beginTransaction();

            // 创建实名认证记录
            $realRecord = CoachRealRecord::create([
                'coach_id' => $this->coach->id,
                'real_name' => $data['real_name'],
                'id_card' => $data['id_card'],
                'id_card_front_photo' => $data['id_card_front_photo'],
                'id_card_back_photo' => $data['id_card_back_photo'],
                'id_card_hand_photo' => $data['id_card_hand_photo'],
                'state' => TechnicianAuthStatus::AUDITING->value
            ]);

            // 调用阿里实名认证
            $response = $this->aliRealAuthService->verify([
                'real_name' => $data['real_name'],
                'id_card' => $data['id_card']
            ]);

            // 清除认证缓存
            $this->clearAuthCache();

            DB::commit();

            return [
                'record' => [
                    'id' => $realRecord->id,
                    'state' => $realRecord->state,
                    'state_text' => TechnicianAuthStatus::fromValue($realRecord->state)->label()
                ],
                'can_proceed' => true,
                'message' => '实名认证提交成功，系统正在审核，您可以继续提交资质认证'
            ];
        } catch (\Exception $e) {
            DB::rollBack();
            $this->logError('提交实名认证失败', [], $e);
            throw $e;
        }
    }

    /**
     * 提交资质认证
     *
     * @param array $data
     * @return array
     * @throws \Exception
     */
    public function submitQualAuth(array $data): array
    {
        try {
            // 检查提交次数限制
            $this->checkRateLimit('qual_auth');

            DB::beginTransaction();

            // 创建资质认证记录
            $qualRecord = CoachQualRecord::create([
                'coach_id' => $this->coach->id,
                'qual_type' => $data['qual_type'],
                'qual_no' => $data['qual_no'],
                'qual_photo' => $data['qual_photo'],
                'valid_start' => $data['valid_start'] ?? null,
                'valid_end' => $data['valid_end'] ?? null,
                'state' => TechnicianAuthStatus::AUDITING->value
            ]);

            // 检查实名认证状态，添加提示信息
            $warning = null;
            if ($this->coach->real_auth?->state === TechnicianAuthStatus::AUDITING->value) {
                $warning = '实名认证正在审核中，如审核失败可能需要重新提交资质认证';
            }

            // 清除认证缓存
            $this->clearAuthCache();

            DB::commit();

            return [
                'record' => [
                    'id' => $qualRecord->id,
                    'state' => $qualRecord->state,
                    'state_text' => TechnicianAuthStatus::fromValue($qualRecord->state)->label()
                ],
                'warning' => $warning
            ];
        } catch (\Exception $e) {
            DB::rollBack();
            $this->logError('提交资质认证失败', [], $e);
            throw $e;
        }
    }

    /**
     * 检查认证状态
     *
     * @return array 返回认证状态和详细信息
     */
    public function checkAuthStatus(): array
    {
        // 获取最新的基本信息记录
        $latestInfo = CoachInfoRecord::where('coach_id', $this->coach->id)
            ->latest()
            ->first();

        // 获取最新的实名认证记录
        $latestRealAuth = CoachRealRecord::where('coach_id', $this->coach->id)
            ->latest()
            ->first();

        // 获取最新的资质认证记录
        $latestQualAuth = CoachQualRecord::where('coach_id', $this->coach->id)
            ->latest()
            ->first();

        $getStateInfo = function ($record) {
            if (!$record) {
                return [
                    'state' => 0,
                    'state_text' => '未提交'
                ];
            }
            return [
                'state' => $record->state,
                'state_text' => TechnicianAuthStatus::fromValue($record->state)->label()
            ];
        };

        return [
            'basic_info' => [
                ...$getStateInfo($latestInfo),
                'detail' => $latestInfo ? [
                    'nickname' => $latestInfo->nickname,
                    'avatar' => $latestInfo->avatar,
                    'gender' => $latestInfo->gender,
                    'mobile' => $latestInfo->mobile,
                    'age' => $latestInfo->age,
                    'birthday' => $latestInfo->birthday,
                    'work_years' => $latestInfo->work_years,
                    'intention_city' => $latestInfo->intention_city,
                    'introduction' => $latestInfo->introduction,
                    'portrait_images' => $latestInfo->portrait_images,
                    'created_at' => $latestInfo->created_at,
                    'updated_at' => $latestInfo->updated_at,
                ] : null,
            ],
            'real_auth' => [
                ...$getStateInfo($latestRealAuth),
                'detail' => $latestRealAuth ? [
                    'real_name' => $latestRealAuth->real_name,
                    'id_card' => $latestRealAuth->id_card,
                    'id_card_front_photo' => $latestRealAuth->id_card_front_photo,
                    'id_card_back_photo' => $latestRealAuth->id_card_back_photo,
                    'id_card_hand_photo' => $latestRealAuth->id_card_hand_photo,
                    'created_at' => $latestRealAuth->created_at,
                    'updated_at' => $latestRealAuth->updated_at,
                ] : null,
            ],
            'qual_auth' => [
                ...$getStateInfo($latestQualAuth),
                'detail' => $latestQualAuth ? [
                    'qual_type' => $latestQualAuth->qual_type,
                    'qual_no' => $latestQualAuth->qual_no,
                    'qual_photo' => $latestQualAuth->qual_photo,
                    'valid_start' => $latestQualAuth->valid_start,
                    'valid_end' => $latestQualAuth->valid_end,
                    'created_at' => $latestQualAuth->created_at,
                    'updated_at' => $latestQualAuth->updated_at,
                ] : null,
            ],
        ];
    }

    /**
     * 记录信息日志
     */
    private function logInfo(string $message, array $data = [])
    {
        Log::info($message, array_merge([
            'coach_id' => $this->coach->id,
            'ip' => request()->ip(),
            'timestamp' => now()->toDateTimeString(),
        ], $data));
    }

    /**
     * 记录错误日志
     */
    private function logError(string $message, array $data = [], ?\Exception $e = null)
    {
        Log::error($message, array_merge([
            'coach_id' => $this->coach->id,
            'ip' => request()->ip(),
            'timestamp' => now()->toDateTimeString(),
        ], $data, $e ? [
            'error' => $e->getMessage(),
            'file' => $e->getFile(),
            'line' => $e->getLine(),
        ] : []));
    }

    /**
     * 清除认证缓存
     */
    private function clearAuthCache()
    {
        Cache::forget(self::CACHE_KEY_PREFIX.$this->coach->id);
    }
}