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Doar Mihai
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<?php
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namespace App\Services;
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use App\Models\ApiLog;
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use App\Models\AnalyticsEvent;
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use App\Models\JobFetchLog;
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use App\Models\JobSource;
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use Illuminate\Support\Facades\DB;
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class MetricsService
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{
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/**
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* Get API performance metrics
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*/
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public function getApiMetrics(int $days = 7): array
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{
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$startDate = now()->subDays($days);
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return [
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'total_requests' => ApiLog::where('created_at', '>=', $startDate)->count(),
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'successful_requests' => ApiLog::successful()->where('created_at', '>=', $startDate)->count(),
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'failed_requests' => ApiLog::failed()->where('created_at', '>=', $startDate)->count(),
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'average_response_time' => ApiLog::where('created_at', '>=', $startDate)
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->whereNotNull('response_time_ms')
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->avg('response_time_ms'),
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'success_rate' => $this->calculateSuccessRate($days),
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'by_source' => $this->getApiMetricsBySource($days),
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];
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}
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/**
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* Get job fetch metrics
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*/
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public function getJobFetchMetrics(int $days = 7): array
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{
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$startDate = now()->subDays($days);
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return [
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'total_fetches' => JobFetchLog::where('created_at', '>=', $startDate)->count(),
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'successful_fetches' => JobFetchLog::successful()->where('created_at', '>=', $startDate)->count(),
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'failed_fetches' => JobFetchLog::failed()->where('created_at', '>=', $startDate)->count(),
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'total_jobs_fetched' => JobFetchLog::where('created_at', '>=', $startDate)->sum('jobs_fetched'),
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'total_jobs_created' => JobFetchLog::where('created_at', '>=', $startDate)->sum('jobs_created'),
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'total_jobs_updated' => JobFetchLog::where('created_at', '>=', $startDate)->sum('jobs_updated'),
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'total_jobs_skipped' => JobFetchLog::where('created_at', '>=', $startDate)->sum('jobs_skipped'),
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'average_duration' => JobFetchLog::where('created_at', '>=', $startDate)
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->whereNotNull('duration_seconds')
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->avg('duration_seconds'),
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'by_source' => $this->getJobFetchMetricsBySource($days),
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];
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}
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/**
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* Get analytics metrics
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*/
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public function getAnalyticsMetrics(int $days = 7): array
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{
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$startDate = now()->subDays($days);
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return [
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'total_events' => AnalyticsEvent::where('created_at', '>=', $startDate)->count(),
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'job_views' => AnalyticsEvent::ofType(AnalyticsEvent::EVENT_JOB_VIEW)
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->where('created_at', '>=', $startDate)->count(),
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'job_apply_clicks' => AnalyticsEvent::ofType(AnalyticsEvent::EVENT_JOB_APPLY_CLICK)
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->where('created_at', '>=', $startDate)->count(),
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'searches' => AnalyticsEvent::ofType(AnalyticsEvent::EVENT_SEARCH)
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->where('created_at', '>=', $startDate)->count(),
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'unique_sessions' => AnalyticsEvent::where('created_at', '>=', $startDate)
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->distinct('session_id')->count('session_id'),
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'click_through_rate' => $this->calculateClickThroughRate($days),
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'popular_jobs' => $this->getPopularJobs($days),
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'popular_searches' => $this->getPopularSearches($days),
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];
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}
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/**
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* Get system health metrics
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*/
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public function getSystemHealth(): array
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{
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$recentFailures = ApiLog::failed()
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->where('created_at', '>=', now()->subHours(1))
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->count();
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$recentFetchFailures = JobFetchLog::failed()
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->where('created_at', '>=', now()->subHours(24))
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->count();
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return [
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'status' => $this->determineSystemStatus($recentFailures, $recentFetchFailures),
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'api_failures_last_hour' => $recentFailures,
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'fetch_failures_last_24h' => $recentFetchFailures,
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'last_successful_fetch' => JobFetchLog::successful()
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->latest()
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->first()?->created_at,
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'sources_status' => $this->getSourcesStatus(),
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];
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}
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/**
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* Calculate API success rate
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*/
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private function calculateSuccessRate(int $days): float
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{
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$total = ApiLog::withinDays($days)->count();
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if ($total === 0) {
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return 0;
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}
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$successful = ApiLog::successful()->withinDays($days)->count();
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return round(($successful / $total) * 100, 2);
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}
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/**
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* Get API metrics by source
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*/
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private function getApiMetricsBySource(int $days): array
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{
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return ApiLog::select('job_source_id')
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->selectRaw('COUNT(*) as total')
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->selectRaw('SUM(CASE WHEN success = 1 THEN 1 ELSE 0 END) as successful')
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->selectRaw('AVG(response_time_ms) as avg_response_time')
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->withinDays($days)
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->with('source:id,name')
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->groupBy('job_source_id')
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->get()
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->map(function ($item) {
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return [
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'source' => $item->source->name ?? 'Unknown',
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'total_requests' => $item->total,
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'successful' => $item->successful,
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'success_rate' => $item->total > 0 ? round(($item->successful / $item->total) * 100, 2) : 0,
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'avg_response_time' => round($item->avg_response_time, 2),
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];
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})
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->toArray();
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}
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/**
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* Get job fetch metrics by source
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*/
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private function getJobFetchMetricsBySource(int $days): array
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{
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return JobFetchLog::select('job_source_id')
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->selectRaw('COUNT(*) as total_fetches')
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->selectRaw('SUM(jobs_fetched) as jobs_fetched')
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->selectRaw('SUM(jobs_created) as jobs_created')
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->selectRaw('SUM(jobs_updated) as jobs_updated')
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->selectRaw('AVG(duration_seconds) as avg_duration')
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->withinDays($days)
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->with('source:id,name')
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->groupBy('job_source_id')
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->get()
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->map(function ($item) {
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return [
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'source' => $item->source->name ?? 'Unknown',
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'total_fetches' => $item->total_fetches,
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'jobs_fetched' => $item->jobs_fetched,
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'jobs_created' => $item->jobs_created,
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'jobs_updated' => $item->jobs_updated,
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'avg_duration' => round($item->avg_duration, 2),
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];
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})
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->toArray();
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}
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/**
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* Calculate click-through rate
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*/
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private function calculateClickThroughRate(int $days): float
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{
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$views = AnalyticsEvent::ofType(AnalyticsEvent::EVENT_JOB_VIEW)
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->withinDays($days)
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->count();
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if ($views === 0) {
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return 0;
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}
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$clicks = AnalyticsEvent::ofType(AnalyticsEvent::EVENT_JOB_APPLY_CLICK)
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->withinDays($days)
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->count();
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return round(($clicks / $views) * 100, 2);
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}
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/**
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* Get popular jobs
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*/
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private function getPopularJobs(int $days, int $limit = 10): array
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{
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return AnalyticsEvent::select('job_id')
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->selectRaw('COUNT(*) as view_count')
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->selectRaw('SUM(CASE WHEN event_type = ? THEN 1 ELSE 0 END) as apply_clicks', [AnalyticsEvent::EVENT_JOB_APPLY_CLICK])
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->whereNotNull('job_id')
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->withinDays($days)
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->with('job:id,title,company')
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->groupBy('job_id')
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->orderByDesc('view_count')
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->limit($limit)
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->get()
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->map(function ($item) {
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return [
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'job_id' => $item->job_id,
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'title' => $item->job->title ?? 'Unknown',
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'company' => $item->job->company ?? 'Unknown',
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'views' => $item->view_count,
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'apply_clicks' => $item->apply_clicks,
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];
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})
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->toArray();
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}
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/**
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* Get popular search terms
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*/
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private function getPopularSearches(int $days, int $limit = 10): array
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{
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return AnalyticsEvent::select(DB::raw('JSON_EXTRACT(event_data, "$.keywords") as search_term'))
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->selectRaw('COUNT(*) as search_count')
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->ofType(AnalyticsEvent::EVENT_SEARCH)
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->withinDays($days)
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->whereNotNull(DB::raw('JSON_EXTRACT(event_data, "$.keywords")'))
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->groupBy('search_term')
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->orderByDesc('search_count')
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->limit($limit)
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->get()
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->map(function ($item) {
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return [
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'term' => trim($item->search_term, '"'),
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'count' => $item->search_count,
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];
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})
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->toArray();
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}
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/**
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* Determine system status
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*/
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private function determineSystemStatus(int $apiFailures, int $fetchFailures): string
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{
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if ($apiFailures > 10 || $fetchFailures > 5) {
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return 'critical';
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}
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if ($apiFailures > 5 || $fetchFailures > 2) {
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return 'warning';
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}
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return 'healthy';
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}
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/**
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* Get status of all sources
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*/
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private function getSourcesStatus(): array
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{
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return JobSource::get()->map(function ($source) {
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$lastFetch = JobFetchLog::where('job_source_id', $source->id)
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->latest()
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->first();
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return [
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'id' => $source->id,
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'name' => $source->name,
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'is_active' => $source->is_active,
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'last_fetch_success' => $lastFetch?->success ?? null,
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'last_fetch_at' => $lastFetch?->created_at ?? null,
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'jobs_in_last_fetch' => $lastFetch?->jobs_created ?? 0,
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];
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})->toArray();
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}
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}
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