<?php

namespace App\Module\Game\Services;

use App\Module\Game\Jobs\CollectUserLogJob;
use App\Module\Game\Logics\UserLogCollectorManager;
use Illuminate\Support\Facades\Log;

/**
 * 用户日志调度服务
 *
 * 负责管理用户日志收集的调度任务
 */
class UserLogScheduleService
{
    /**
     * 执行日志收集（同步方式）
     *
     * @param string|null $collectorName 收集器名称，null表示执行所有收集器
     * @return array 执行结果
     */
    public static function collectNow(?string $collectorName = null): array
    {
        try {
            $manager = new UserLogCollectorManager();

            if ($collectorName) {
                return $manager->collectByName($collectorName);
            } else {
                return $manager->collectAll();
            }

        } catch (\Exception $e) {
            Log::error('同步执行日志收集失败', [
                'collector' => $collectorName,
                'error' => $e->getMessage()
            ]);

            return [
                'status' => 'error',
                'error' => $e->getMessage(),
                'timestamp' => now()->toDateTimeString()
            ];
        }
    }

    /**
     * 调度日志收集任务（异步方式）
     *
     * @param string|null $collectorName 收集器名称，null表示执行所有收集器
     * @return void
     */
    public static function scheduleCollection(?string $collectorName = null): void
    {
        CollectUserLogJob::dispatchCollection($collectorName);
    }

    /**
     * 获取收集器信息
     *
     * @return array
     */
    public static function getCollectorsInfo(): array
    {
        try {
            $manager = new UserLogCollectorManager();
            return $manager->getCollectorsInfo();

        } catch (\Exception $e) {
            Log::error('获取收集器信息失败', [
                'error' => $e->getMessage()
            ]);
            return [];
        }
    }

    /**
     * 重置收集器进度
     *
     * @param string|null $collectorName 收集器名称，null表示重置所有收集器
     * @return bool
     */
    public static function resetCollector(?string $collectorName = null): bool
    {
        try {
            $manager = new UserLogCollectorManager();

            if ($collectorName) {
                $manager->resetCollector($collectorName);
            } else {
                $manager->resetAllCollectors();
            }

            return true;

        } catch (\Exception $e) {
            Log::error('重置收集器进度失败', [
                'collector' => $collectorName,
                'error' => $e->getMessage()
            ]);
            return false;
        }
    }

    /**
     * 检查收集器状态
     *
     * @return array
     */
    public static function checkCollectorsStatus(): array
    {
        try {
            $manager = new UserLogCollectorManager();
            $collectorsInfo = $manager->getCollectorsInfo();
            $status = [];

            foreach ($collectorsInfo as $name => $info) {
                $cacheKey = "user_log_collector:last_processed_id:{$info['source_table']}";
                $lastProcessedId = \Illuminate\Support\Facades\Cache::get($cacheKey, 0);
                
                $status[$name] = [
                    'name' => $name,
                    'source_table' => $info['source_table'],
                    'source_type' => $info['source_type'],
                    'last_processed_id' => $lastProcessedId,
                    'last_check_time' => now()->toDateTimeString(),
                ];
            }

            return $status;

        } catch (\Exception $e) {
            Log::error('检查收集器状态失败', [
                'error' => $e->getMessage()
            ]);
            return [];
        }
    }

    /**
     * 获取收集统计信息
     *
     * @param int $days 统计天数
     * @return array
     */
    public static function getCollectionStats(int $days = 7): array
    {
        try {
            $stats = [
                'period' => "{$days}天",
                'start_date' => now()->subDays($days)->toDateString(),
                'end_date' => now()->toDateString(),
                'total_logs' => 0,
                'daily_stats' => [],
                'source_type_stats' => [],
            ];

            // 获取总日志数
            $totalLogs = \App\Module\Game\Models\UserLog::where('created_at', '>=', now()->subDays($days))
                ->count();
            $stats['total_logs'] = $totalLogs;

            // 获取每日统计
            $dailyStats = \App\Module\Game\Models\UserLog::where('created_at', '>=', now()->subDays($days))
                ->selectRaw('DATE(created_at) as date, COUNT(*) as count')
                ->groupBy('date')
                ->orderBy('date')
                ->get()
                ->pluck('count', 'date')
                ->toArray();
            $stats['daily_stats'] = $dailyStats;

            // 获取来源类型统计
            $sourceTypeStats = \App\Module\Game\Models\UserLog::where('created_at', '>=', now()->subDays($days))
                ->selectRaw('source_type, COUNT(*) as count')
                ->whereNotNull('source_type')
                ->groupBy('source_type')
                ->get()
                ->pluck('count', 'source_type')
                ->toArray();
            $stats['source_type_stats'] = $sourceTypeStats;

            return $stats;

        } catch (\Exception $e) {
            Log::error('获取收集统计信息失败', [
                'error' => $e->getMessage()
            ]);
            return [];
        }
    }

    /**
     * 健康检查
     *
     * @return array
     */
    public static function healthCheck(): array
    {
        try {
            $health = [
                'status' => 'healthy',
                'checks' => [],
                'timestamp' => now()->toDateTimeString(),
            ];

            // 检查收集器是否正常注册
            $manager = new UserLogCollectorManager();
            $collectorsInfo = $manager->getCollectorsInfo();
            
            $health['checks']['collectors_registered'] = [
                'status' => !empty($collectorsInfo) ? 'pass' : 'fail',
                'count' => count($collectorsInfo),
                'details' => array_keys($collectorsInfo),
            ];

            // 检查最近是否有日志生成
            $recentLogsCount = \App\Module\Game\Models\UserLog::where('created_at', '>=', now()->subMinutes(10))
                ->count();
            
            $health['checks']['recent_logs'] = [
                'status' => 'info',
                'count' => $recentLogsCount,
                'message' => "最近10分钟生成了 {$recentLogsCount} 条日志",
            ];

            // 检查数据库连接
            try {
                \App\Module\Game\Models\UserLog::count();
                $health['checks']['database'] = [
                    'status' => 'pass',
                    'message' => '数据库连接正常',
                ];
            } catch (\Exception $e) {
                $health['checks']['database'] = [
                    'status' => 'fail',
                    'message' => '数据库连接失败: ' . $e->getMessage(),
                ];
                $health['status'] = 'unhealthy';
            }

            return $health;

        } catch (\Exception $e) {
            return [
                'status' => 'unhealthy',
                'error' => $e->getMessage(),
                'timestamp' => now()->toDateTimeString(),
            ];
        }
    }
}