<?php

namespace App\Services;

use App\Models\AnalyticsEvent;
use App\Models\User;
use App\Models\Ad;
use App\Models\ChatMessage;
use App\Models\Notification as NotificationModel;
use Carbon\Carbon;
use Illuminate\Support\Facades\DB;

class AnalyticsService
{
    /**
     * Get dashboard overview statistics
     */
    public function getDashboardOverview($startDate = null, $endDate = null)
    {
        $query = AnalyticsEvent::query();
        
        if ($startDate && $endDate) {
            $query->whereBetween('created_at', [$startDate, $endDate]);
        }

        return [
            'total_visitors' => $this->getUniqueVisitors($startDate, $endDate),
            'total_page_views' => $this->getPageViews($startDate, $endDate),
            'total_registrations' => $this->getRegistrations($startDate, $endDate),
            'total_ads_posted' => $this->getAdsPosted($startDate, $endDate),
            'total_messages_sent' => $this->getMessagesSent($startDate, $endDate),
            'total_revenue' => $this->getRevenue($startDate, $endDate),
            'active_users' => $this->getActiveUsers($startDate, $endDate),
            'bounce_rate' => $this->getBounceRate($startDate, $endDate),
            'avg_session_duration' => $this->getAverageSessionDuration($startDate, $endDate),
        ];
    }

    /**
     * Get user analytics
     */
    public function getUserAnalytics($startDate = null, $endDate = null)
    {
        return [
            'user_growth' => $this->getUserGrowth($startDate, $endDate),
            'user_retention' => $this->getUserRetention($startDate, $endDate),
            'user_engagement' => $this->getUserEngagement($startDate, $endDate),
            'user_demographics' => $this->getUserDemographics($startDate, $endDate),
            'user_activity' => $this->getUserActivity($startDate, $endDate),
        ];
    }

    /**
     * Get ad analytics
     */
    public function getAdAnalytics($startDate = null, $endDate = null)
    {
        return [
            'ads_performance' => $this->getAdsPerformance($startDate, $endDate),
            'category_popularity' => $this->getCategoryPopularity($startDate, $endDate),
            'ad_conversion' => $this->getAdConversion($startDate, $endDate),
            'ad_engagement' => $this->getAdEngagement($startDate, $endDate),
        ];
    }

    /**
     * Get revenue analytics
     */
    public function getRevenueAnalytics($startDate = null, $endDate = null)
    {
        return [
            'revenue_over_time' => $this->getRevenueOverTime($startDate, $endDate),
            'revenue_by_source' => $this->getRevenueBySource($startDate, $endDate),
            'plan_performance' => $this->getPlanPerformance($startDate, $endDate),
            'conversion_rates' => $this->getConversionRates($startDate, $endDate),
        ];
    }

    /**
     * Get technical analytics
     */
    public function getTechnicalAnalytics($startDate = null, $endDate = null)
    {
        return [
            'device_breakdown' => $this->getDeviceBreakdown($startDate, $endDate),
            'browser_breakdown' => $this->getBrowserBreakdown($startDate, $endDate),
            'geographic_distribution' => $this->getGeographicDistribution($startDate, $endDate),
            'page_performance' => $this->getPagePerformance($startDate, $endDate),
        ];
    }

    /**
     * Get unique visitors
     */
    private function getUniqueVisitors($startDate, $endDate)
    {
        $query = AnalyticsEvent::where('event_type', 'page_view');
        
        if ($startDate && $endDate) {
            $query->whereBetween('created_at', [$startDate, $endDate]);
        }

        return $query->distinct('session_id')->count('session_id');
    }

    /**
     * Get page views
     */
    private function getPageViews($startDate, $endDate)
    {
        $query = AnalyticsEvent::where('event_type', 'page_view');
        
        if ($startDate && $endDate) {
            $query->whereBetween('created_at', [$startDate, $endDate]);
        }

        return $query->count();
    }

    /**
     * Get registrations
     */
    private function getRegistrations($startDate, $endDate)
    {
        $query = AnalyticsEvent::where('event_type', 'user_registration');
        
        if ($startDate && $endDate) {
            $query->whereBetween('created_at', [$startDate, $endDate]);
        }

        return $query->count();
    }

    /**
     * Get ads posted
     */
    private function getAdsPosted($startDate, $endDate)
    {
        $query = AnalyticsEvent::where('event_type', 'ad_posted');
        
        if ($startDate && $endDate) {
            $query->whereBetween('created_at', [$startDate, $endDate]);
        }

        return $query->count();
    }

    /**
     * Get messages sent
     */
    private function getMessagesSent($startDate, $endDate)
    {
        $query = AnalyticsEvent::where('event_type', 'message_sent');
        
        if ($startDate && $endDate) {
            $query->whereBetween('created_at', [$startDate, $endDate]);
        }

        return $query->count();
    }

    /**
     * Get revenue
     */
    private function getRevenue($startDate, $endDate)
    {
        // This would typically come from payment transactions
        // For now, we'll use a placeholder
        return 0;
    }

    /**
     * Get active users
     */
    private function getActiveUsers($startDate, $endDate)
    {
        $query = AnalyticsEvent::where('event_type', 'page_view')
            ->whereNotNull('user_id');
        
        if ($startDate && $endDate) {
            $query->whereBetween('created_at', [$startDate, $endDate]);
        }

        return $query->distinct('user_id')->count('user_id');
    }

    /**
     * Get bounce rate
     */
    private function getBounceRate($startDate, $endDate)
    {
        // Calculate sessions with only one page view
        $totalSessions = $this->getUniqueVisitors($startDate, $endDate);
        
        if ($totalSessions == 0) return 0;

        $bouncedSessions = AnalyticsEvent::select('session_id')
            ->where('event_type', 'page_view')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->groupBy('session_id')
            ->havingRaw('COUNT(*) = 1')
            ->count();

        return ($bouncedSessions / $totalSessions) * 100;
    }

    /**
     * Get average session duration
     */
    private function getAverageSessionDuration($startDate, $endDate)
    {
        // Calculate average time between first and last event in a session
        $sessions = AnalyticsEvent::select('session_id')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->groupBy('session_id')
            ->pluck('session_id');

        if ($sessions->isEmpty()) return 0;

        $totalDuration = 0;
        $sessionCount = 0;

        foreach ($sessions as $sessionId) {
            $sessionEvents = AnalyticsEvent::where('session_id', $sessionId)
                ->orderBy('created_at')
                ->get();

            if ($sessionEvents->count() > 1) {
                $firstEvent = $sessionEvents->first()->created_at;
                $lastEvent = $sessionEvents->last()->created_at;
                $duration = $lastEvent->diffInSeconds($firstEvent);
                $totalDuration += $duration;
                $sessionCount++;
            }
        }

        return $sessionCount > 0 ? ($totalDuration / $sessionCount) : 0;
    }

    /**
     * Get user growth
     */
    private function getUserGrowth($startDate, $endDate)
    {
        $users = User::selectRaw('DATE(created_at) as date, COUNT(*) as count')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->groupBy('date')
            ->orderBy('date')
            ->get();

        return $users;
    }

    /**
     * Get user retention
     */
    private function getUserRetention($startDate, $endDate)
    {
        // Calculate user retention over time
        // This is a simplified version
        $newUsers = User::when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
            return $query->whereBetween('created_at', [$startDate, $endDate]);
        })->count();

        $activeUsers = $this->getActiveUsers($startDate, $endDate);

        return $newUsers > 0 ? ($activeUsers / $newUsers) * 100 : 0;
    }

    /**
     * Get user engagement
     */
    private function getUserEngagement($startDate, $endDate)
    {
        $totalEvents = AnalyticsEvent::when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
            return $query->whereBetween('created_at', [$startDate, $endDate]);
        })->count();

        $activeUsers = $this->getActiveUsers($startDate, $endDate);

        return $activeUsers > 0 ? ($totalEvents / $activeUsers) : 0;
    }

    /**
     * Get user demographics
     */
    private function getUserDemographics($startDate, $endDate)
    {
        $demographics = AnalyticsEvent::select('country', 'device_type', DB::raw('COUNT(*) as count'))
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->whereNotNull('country')
            ->groupBy('country', 'device_type')
            ->orderBy('count', 'desc')
            ->get();

        return $demographics;
    }

    /**
     * Get user activity
     */
    private function getUserActivity($startDate, $endDate)
    {
        $activity = AnalyticsEvent::selectRaw('HOUR(created_at) as hour, COUNT(*) as count')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->groupBy('hour')
            ->orderBy('hour')
            ->get();

        return $activity;
    }

    /**
     * Get ads performance
     */
    private function getAdsPerformance($startDate, $endDate)
    {
        $ads = Ad::selectRaw('DATE(created_at) as date, COUNT(*) as count')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->groupBy('date')
            ->orderBy('date')
            ->get();

        return $ads;
    }

    /**
     * Get category popularity
     */
    private function getCategoryPopularity($startDate, $endDate)
    {
        $categories = Ad::select('category_id', DB::raw('COUNT(*) as count'))
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->groupBy('category_id')
            ->orderBy('count', 'desc')
            ->limit(10)
            ->get();

        return $categories;
    }

    /**
     * Get ad conversion
     */
    private function getAdConversion($startDate, $endDate)
    {
        $adsPosted = $this->getAdsPosted($startDate, $endDate);
        $messagesSent = $this->getMessagesSent($startDate, $endDate);

        return $adsPosted > 0 ? ($messagesSent / $adsPosted) : 0;
    }

    /**
     * Get ad engagement
     */
    private function getAdEngagement($startDate, $endDate)
    {
        $views = AnalyticsEvent::where('event_type', 'ad_viewed')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->count();

        $clicks = AnalyticsEvent::where('event_type', 'ad_clicked')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->count();

        return $views > 0 ? ($clicks / $views) * 100 : 0;
    }

    /**
     * Get revenue over time
     */
    private function getRevenueOverTime($startDate, $endDate)
    {
        // Placeholder for revenue data
        return [];
    }

    /**
     * Get revenue by source
     */
    private function getRevenueBySource($startDate, $endDate)
    {
        // Placeholder for revenue by source
        return [];
    }

    /**
     * Get plan performance
     */
    private function getPlanPerformance($startDate, $endDate)
    {
        // Placeholder for plan performance
        return [];
    }

    /**
     * Get conversion rates
     */
    private function getConversionRates($startDate, $endDate)
    {
        $registrations = $this->getRegistrations($startDate, $endDate);
        $adsPosted = $this->getAdsPosted($startDate, $endDate);

        return [
            'registration_to_ad_post' => $registrations > 0 ? ($adsPosted / $registrations) * 100 : 0,
        ];
    }

    /**
     * Get device breakdown
     */
    private function getDeviceBreakdown($startDate, $endDate)
    {
        $devices = AnalyticsEvent::select('device_type', DB::raw('COUNT(*) as count'))
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->groupBy('device_type')
            ->orderBy('count', 'desc')
            ->get();

        return $devices;
    }

    /**
     * Get browser breakdown
     */
    private function getBrowserBreakdown($startDate, $endDate)
    {
        $browsers = AnalyticsEvent::select('browser', DB::raw('COUNT(*) as count'))
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->groupBy('browser')
            ->orderBy('count', 'desc')
            ->get();

        return $browsers;
    }

    /**
     * Get geographic distribution
     */
    private function getGeographicDistribution($startDate, $endDate)
    {
        $countries = AnalyticsEvent::select('country', DB::raw('COUNT(*) as count'))
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->where('country', '!=', 'Unknown')
            ->groupBy('country')
            ->orderBy('count', 'desc')
            ->limit(10)
            ->get();

        return $countries;
    }

    /**
     * Get page performance
     */
    private function getPagePerformance($startDate, $endDate)
    {
        $pages = AnalyticsEvent::select('page_url', DB::raw('COUNT(*) as views'))
            ->where('event_type', 'page_view')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->groupBy('page_url')
            ->orderBy('views', 'desc')
            ->limit(10)
            ->get();

        return $pages;
    }

    /**
     * Track custom event
     */
    public function trackEvent(string $eventType, array $eventData = [], ?int $userId = null, ?string $sessionId = null)
    {
        return AnalyticsEvent::trackEvent($eventType, $eventData, $userId, $sessionId);
    }

    /**
     * Get daily revenue data
     */
    public function getDailyRevenue($startDate, $endDate)
    {
        // Placeholder - would need actual revenue data from transactions
        return [];
    }

    /**
     * Get revenue by category
     */
    public function getRevenueByCategory($startDate, $endDate)
    {
        // Placeholder - would need actual revenue data linked to categories
        return [];
    }

    /**
     * Get payment method breakdown
     */
    public function getPaymentMethodBreakdown($startDate, $endDate)
    {
        // Placeholder - would need actual payment data
        return [];
    }

    /**
     * Get revenue trends
     */
    public function getRevenueTrends($startDate, $endDate)
    {
        // Placeholder - would analyze revenue patterns over time
        return [];
    }

    /**
     * Get feature usage analytics
     */
    public function getFeatureUsage($startDate, $endDate)
    {
        $features = AnalyticsEvent::select('event_type', DB::raw('COUNT(*) as count'))
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->where('event_type', 'like', '%feature%')
            ->orWhere('event_type', 'like', '%action%')
            ->groupBy('event_type')
            ->orderBy('count', 'desc')
            ->get();

        return $features;
    }

    /**
     * Get session analysis
     */
    public function getSessionAnalysis($startDate, $endDate)
    {
        // Analyze session patterns
        return [
            'avg_session_duration' => $this->getAverageSessionDuration($startDate, $endDate),
            'sessions_per_user' => $this->getSessionsPerUser($startDate, $endDate),
            'bounce_rate' => $this->getBounceRate($startDate, $endDate),
        ];
    }

    /**
     * Get user journey analytics
     */
    public function getUserJourney($startDate, $endDate)
    {
        // Analyze common user paths through the application
        return [];
    }

    /**
     * Get engagement metrics
     */
    public function getEngagementMetrics($startDate, $endDate)
    {
        return [
            'page_views_per_session' => $this->getPageViewsPerSession($startDate, $endDate),
            'time_on_site' => $this->getAverageSessionDuration($startDate, $endDate),
            'returning_visitors' => $this->getReturningVisitors($startDate, $endDate),
        ];
    }

    /**
     * Get category trends
     */
    public function getCategoryTrends($startDate, $endDate)
    {
        $trends = Ad::selectRaw('DATE(created_at) as date, category_id, COUNT(*) as count')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->groupBy('date', 'category_id')
            ->orderBy('date')
            ->get();

        return $trends;
    }


    /**
     * Get seasonal patterns
     */
    public function getSeasonalPatterns($startDate, $endDate)
    {
        // Analyze patterns by time of day, day of week, month
        return [
            'hourly_patterns' => $this->getHourlyPatterns($startDate, $endDate),
            'daily_patterns' => $this->getDailyPatterns($startDate, $endDate),
            'monthly_patterns' => $this->getMonthlyPatterns($startDate, $endDate),
        ];
    }

    /**
     * Get competitor analysis
     */
    public function getCompetitorAnalysis($startDate, $endDate)
    {
        // Placeholder for competitor analysis
        return [];
    }

    /**
     * Get registration funnel
     */
    public function getRegistrationFunnel($startDate, $endDate)
    {
        return [
            'visitors' => $this->getUniqueVisitors($startDate, $endDate),
            'sign_up_attempts' => $this->getSignUpAttempts($startDate, $endDate),
            'completed_registrations' => $this->getRegistrations($startDate, $endDate),
        ];
    }

    /**
     * Get ad posting funnel
     */
    public function getAdPostingFunnel($startDate, $endDate)
    {
        return [
            'ad_form_views' => $this->getAdFormViews($startDate, $endDate),
            'ad_submissions' => $this->getAdsPosted($startDate, $endDate),
            'ad_approvals' => $this->getAdApprovals($startDate, $endDate),
        ];
    }

    /**
     * Get purchase funnel
     */
    public function getPurchaseFunnel($startDate, $endDate)
    {
        // Placeholder for purchase funnel analysis
        return [];
    }

    /**
     * Get retention funnel
     */
    public function getRetentionFunnel($startDate, $endDate)
    {
        return [
            'new_users' => $this->getNewUsers($startDate, $endDate),
            'active_after_1_day' => $this->getActiveAfterDays($startDate, $endDate, 1),
            'active_after_7_days' => $this->getActiveAfterDays($startDate, $endDate, 7),
            'active_after_30_days' => $this->getActiveAfterDays($startDate, $endDate, 30),
        ];
    }

    /**
     * Get high value customers
     */
    public function getHighValueCustomers($startDate, $endDate)
    {
        // Placeholder for high value customer analysis
        return [];
    }

    /**
     * Get customer segments
     */
    public function getCustomerSegments($startDate, $endDate)
    {
        // Placeholder for customer segmentation
        return [];
    }

    /**
     * Get churn analysis
     */
    public function getChurnAnalysis($startDate, $endDate)
    {
        // Placeholder for churn analysis
        return [];
    }

    /**
     * Get lifetime value trends
     */
    public function getLifetimeValueTrends($startDate, $endDate)
    {
        // Placeholder for LTV analysis
        return [];
    }

    /**
     * Get top categories
     */
    public function getTopCategories($startDate, $endDate)
    {
        return $this->getCategoryPopularity($startDate, $endDate);
    }

    /**
     * Get top users
     */
    public function getTopUsers($startDate, $endDate)
    {
        $users = AnalyticsEvent::select('user_id', DB::raw('COUNT(*) as activity_count'))
            ->whereNotNull('user_id')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->groupBy('user_id')
            ->orderBy('activity_count', 'desc')
            ->limit(10)
            ->get();

        return $users;
    }

    /**
     * Get top ads
     */
    public function getTopAds($startDate, $endDate)
    {
        // Placeholder for top ads analysis
        return [];
    }

    /**
     * Get best performing features
     */
    public function getBestPerformingFeatures($startDate, $endDate)
    {
        return $this->getFeatureUsage($startDate, $endDate);
    }

    /**
     * Get high risk areas
     */
    public function getHighRiskAreas($startDate, $endDate)
    {
        return [
            'high_bounce_rate_pages' => $this->getHighBounceRatePages($startDate, $endDate),
            'low_conversion_funnel_steps' => $this->getLowConversionSteps($startDate, $endDate),
            'user_complaints' => $this->getUserComplaints($startDate, $endDate),
        ];
    }

    /**
     * Get potential threats
     */
    public function getPotentialThreats($startDate, $endDate)
    {
        // Placeholder for threat analysis
        return [];
    }

    /**
     * Get vulnerabilities
     */
    public function getVulnerabilities($startDate, $endDate)
    {
        // Placeholder for vulnerability analysis
        return [];
    }

    /**
     * Get short term actions
     */
    public function getShortTermActions($startDate, $endDate)
    {
        return [
            'immediate_opportunities' => $this->getImmediateOpportunities($startDate, $endDate),
            'quick_wins' => $this->getQuickWins($startDate, $endDate),
            'urgent_issues' => $this->getUrgentIssues($startDate, $endDate),
        ];
    }

    /**
     * Get long term strategies
     */
    public function getLongTermStrategies($startDate, $endDate)
    {
        return [
            'growth_strategies' => $this->getGrowthStrategies($startDate, $endDate),
            'market_expansion' => $this->getMarketExpansion($startDate, $endDate),
            'product_improvements' => $this->getProductImprovements($startDate, $endDate),
        ];
    }

    /**
     * Get investment priorities
     */
    public function getInvestmentPriorities($startDate, $endDate)
    {
        return [
            'highest_roi_areas' => $this->getHighestROIAreas($startDate, $endDate),
            'growth_opportunities' => $this->getGrowthOpportunities($startDate, $endDate),
            'risk_mitigation' => $this->getRiskMitigation($startDate, $endDate),
        ];
    }

    // Helper methods for additional analytics

    private function getSessionsPerUser($startDate, $endDate)
    {
        $totalSessions = $this->getUniqueVisitors($startDate, $endDate);
        $activeUsers = $this->getActiveUsers($startDate, $endDate);
        
        return $activeUsers > 0 ? ($totalSessions / $activeUsers) : 0;
    }

    private function getPageViewsPerSession($startDate, $endDate)
    {
        $totalPageViews = $this->getPageViews($startDate, $endDate);
        $totalSessions = $this->getUniqueVisitors($startDate, $endDate);
        
        return $totalSessions > 0 ? ($totalPageViews / $totalSessions) : 0;
    }

    private function getReturningVisitors($startDate, $endDate)
    {
        // Count users with multiple sessions
        $returningUsers = AnalyticsEvent::select('user_id')
            ->whereNotNull('user_id')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->groupBy('user_id')
            ->havingRaw('COUNT(DISTINCT session_id) > 1')
            ->count();

        return $returningUsers;
    }

    private function getHourlyPatterns($startDate, $endDate)
    {
        return AnalyticsEvent::selectRaw('HOUR(created_at) as hour, COUNT(*) as count')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->groupBy('hour')
            ->orderBy('hour')
            ->get();
    }

    private function getDailyPatterns($startDate, $endDate)
    {
        return AnalyticsEvent::selectRaw('DAYOFWEEK(created_at) as day, COUNT(*) as count')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->groupBy('day')
            ->orderBy('day')
            ->get();
    }

    private function getMonthlyPatterns($startDate, $endDate)
    {
        return AnalyticsEvent::selectRaw('MONTH(created_at) as month, COUNT(*) as count')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->groupBy('month')
            ->orderBy('month')
            ->get();
    }

    private function getSignUpAttempts($startDate, $endDate)
    {
        return AnalyticsEvent::where('event_type', 'sign_up_attempt')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->count();
    }

    private function getAdFormViews($startDate, $endDate)
    {
        return AnalyticsEvent::where('event_type', 'ad_form_view')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->count();
    }

    private function getAdApprovals($startDate, $endDate)
    {
        return AnalyticsEvent::where('event_type', 'ad_approved')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->count();
    }

    private function getNewUsers($startDate, $endDate)
    {
        return $this->getRegistrations($startDate, $endDate);
    }

    private function getActiveAfterDays($startDate, $endDate, $days)
    {
        // Placeholder for retention calculation
        return 0;
    }

    private function getHighBounceRatePages($startDate, $endDate)
    {
        // Placeholder for high bounce rate page analysis
        return [];
    }

    private function getLowConversionSteps($startDate, $endDate)
    {
        // Placeholder for funnel step analysis
        return [];
    }

    private function getUserComplaints($startDate, $endDate)
    {
        return AnalyticsEvent::where('event_type', 'user_complaint')
            ->when($startDate && $endDate, function ($query) use ($startDate, $endDate) {
                return $query->whereBetween('created_at', [$startDate, $endDate]);
            })
            ->count();
    }

    private function getImmediateOpportunities($startDate, $endDate)
    {
        return ['Optimize high bounce rate pages', 'Improve conversion funnel'];
    }

    private function getQuickWins($startDate, $endDate)
    {
        return ['Fix critical bugs', 'Improve page load times'];
    }

    private function getUrgentIssues($startDate, $endDate)
    {
        return ['High bounce rate detected', 'Low conversion rates'];
    }

    private function getGrowthStrategies($startDate, $endDate)
    {
        return ['Expand to new markets', 'Enhance user experience'];
    }

    private function getMarketExpansion($startDate, $endDate)
    {
        return ['Geographic expansion', 'New user segments'];
    }

    private function getProductImprovements($startDate, $endDate)
    {
        return ['Feature enhancements', 'Performance optimization'];
    }

    private function getHighestROIAreas($startDate, $endDate)
    {
        return ['User acquisition', 'Retention strategies'];
    }

    private function getGrowthOpportunities($startDate, $endDate)
    {
        return ['New features', 'Market expansion'];
    }

    private function getRiskMitigation($startDate, $endDate)
    {
        return ['Security improvements', 'Performance monitoring'];
    }
}
