83 feat ai movie recommendations

backend/.env.example

@@ -35,3 +35,7 @@ AWS_DEFAULT_REGION=us-east-1
 # ---------------- Other ----------------
 LOG_CHANNEL=stack
 LOG_LEVEL=debug
+
+# ---------------- AI/OpenRouter ----------------
+OPENROUTER_API_KEY=your_openrouter_api_key_here
+AI_MODEL=anthropic/claude-3-haiku

backend/app/Http/Controllers/AIRecommendationController.php

@@ -0,0 +1,296 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\Request;
+use App\Services\AIRecommendationService;
+use Illuminate\Support\Facades\Validator;
+
+class AIRecommendationController extends Controller
+{
+    /**
+     * Generate AI-powered movie recommendations
+     */
+    public function generate(Request $request)
+    {
+        $user = $request->user();
+
+        if (!$user) {
+            return response()->json(['message' => 'Unauthorized'], 401);
+        }
+
+        // Validate request
+        $validator = Validator::make($request->all(), [
+            'mood' => 'nullable|string|max:500',
+            'genres' => 'nullable|array',
+            'genres.*' => 'string',
+            'min_rating' => 'nullable|numeric|min:0|max:10',
+            'year_range' => 'nullable|array|size:2',
+            'year_range.*' => 'integer|min:1900|max:2030',
+            'runtime_preference' => 'nullable|string'
+        ]);
+
+        if ($validator->fails()) {
+            return response()->json([
+                'message' => 'Validation failed',
+                'errors' => $validator->errors()
+            ], 422);
+        }
+
+        try {
+            // Extract preferences from request
+            $preferences = [
+                'mood' => $request->input('mood', ''),
+                'genres' => $request->input('genres', []),
+                'min_rating' => $request->input('min_rating', 0),
+                'year_range' => $request->input('year_range', [2000, 2024]),
+                'runtime_preference' => $request->input('runtime_preference', 'Any Length')
+            ];
+
+            // Generate AI recommendations
+            $result = AIRecommendationService::getAIRecommendations($user, $preferences);
+
+            return response()->json([
+                'success' => true,
+                'data' => $result,
+                'message' => 'AI recommendations generated successfully'
+            ]);
+
+        } catch (\Exception $e) {
+            \Log::error('AI Recommendation Controller Error: ' . $e->getMessage());
+
+            return response()->json([
+                'success' => false,
+                'message' => 'Failed to generate recommendations. Please try again.',
+                'error' => config('app.debug') ? $e->getMessage() : 'Internal server error'
+            ], 500);
+        }
+    }
+
+    /**
+     * Analyze user mood from text input
+     */
+    public function analyzeMood(Request $request)
+    {
+        $user = $request->user();
+
+        // Validate request
+        $validator = Validator::make($request->all(), [
+            'mood_text' => 'required|string|max:1000'
+        ]);
+
+        if ($validator->fails()) {
+            return response()->json([
+                'message' => 'Validation failed',
+                'errors' => $validator->errors()
+            ], 422);
+        }
+
+        try {
+            $moodText = $request->input('mood_text');
+
+            // Analyze mood using AI
+            $moodAnalysis = AIRecommendationService::analyzeMood($moodText, $user);
+
+            return response()->json([
+                'success' => true,
+                'data' => $moodAnalysis,
+                'message' => 'Mood analysis completed successfully'
+            ]);
+
+        } catch (\Exception $e) {
+            \Log::error('Mood Analysis Error: ' . $e->getMessage());
+
+            return response()->json([
+                'success' => false,
+                'message' => 'Failed to analyze mood. Please try again.',
+                'error' => config('app.debug') ? $e->getMessage() : 'Internal server error'
+            ], 500);
+        }
+    }
+
+    /**
+     * Get user insights and preference patterns
+     */
+    public function getUserInsights(Request $request)
+    {
+        $user = $request->user();
+
+        if (!$user) {
+            return response()->json(['message' => 'Unauthorized'], 401);
+        }
+
+        try {
+            // Generate user profile insights
+            $userProfile = $this->generateUserProfileData($user);
+
+            return response()->json([
+                'success' => true,
+                'data' => $userProfile,
+                'message' => 'User insights retrieved successfully'
+            ]);
+
+        } catch (\Exception $e) {
+            \Log::error('User Insights Error: ' . $e->getMessage());
+
+            return response()->json([
+                'success' => false,
+                'message' => 'Failed to retrieve user insights',
+                'error' => config('app.debug') ? $e->getMessage() : 'Internal server error'
+            ], 500);
+        }
+    }
+
+    /**
+     * Quick AI recommendation based on minimal input
+     */
+    public function quickRecommendation(Request $request)
+    {
+        $user = $request->user();
+
+        if (!$user) {
+            return response()->json(['message' => 'Unauthorized'], 401);
+        }
+
+        try {
+            // Use default preferences for quick recommendation
+            $preferences = [
+                'mood' => $request->input('mood', ''),
+                'genres' => [],
+                'min_rating' => 7.0,
+                'year_range' => [2010, 2024],
+                'runtime_preference' => 'Any Length'
+            ];
+
+            $result = AIRecommendationService::getAIRecommendations($user, $preferences);
+
+            // Return only top 5 for quick recommendation
+            $quickResult = [
+                'recommendations' => $result['recommendations']->take(5),
+                'confidence_score' => $result['confidence_score']
+            ];
+
+            return response()->json([
+                'success' => true,
+                'data' => $quickResult,
+                'message' => 'Quick recommendations generated'
+            ]);
+
+        } catch (\Exception $e) {
+            \Log::error('Quick Recommendation Error: ' . $e->getMessage());
+
+            return response()->json([
+                'success' => false,
+                'message' => 'Failed to generate quick recommendations',
+                'error' => config('app.debug') ? $e->getMessage() : 'Internal server error'
+            ], 500);
+        }
+    }
+
+    /**
+     * Generate user profile data for insights
+     */
+    private function generateUserProfileData($user)
+    {
+        // Get user's movie statistics
+        $watchedCount = $user->films()->wherePivot('watched', true)->count();
+        $watchlistCount = $user->films()->wherePivot('watchlist', true)->count();
+        $reviewsCount = $user->reviews()->count();
+
+        // Get favorite genres
+        $favoriteGenres = $user->films()
+            ->wherePivot('watched', true)
+            ->with('genres')
+            ->get()
+            ->flatMap->genres
+            ->groupBy('name')
+            ->sortByDesc(function($genres) { return $genres->count(); })
+            ->take(5)
+            ->keys()
+            ->toArray();
+
+        // Calculate average rating given
+        $averageRating = $user->reviews()->avg('rating') ?? 0;
+
+        // Recent activity
+        $recentWatchedCount = $user->films()
+            ->wherePivot('watched', true)
+            ->wherePivot('updated_at', '>=', now()->subDays(30))
+            ->count();
+
+        return [
+            'statistics' => [
+                'movies_watched' => $watchedCount,
+                'watchlist_items' => $watchlistCount,
+                'reviews_written' => $reviewsCount,
+                'average_rating_given' => round($averageRating, 1),
+                'recent_activity' => $recentWatchedCount
+            ],
+            'preferences' => [
+                'favorite_genres' => $favoriteGenres,
+                'most_active_period' => $this->getMostActivePeriod($user),
+                'preference_strength' => $this->calculatePreferenceStrength($favoriteGenres, $watchedCount)
+            ],
+            'insights' => [
+                'profile_completeness' => $this->calculateProfileCompleteness($user),
+                'recommendation_confidence' => $this->calculateRecommendationConfidence($watchedCount, $reviewsCount),
+                'discovery_potential' => $this->calculateDiscoveryPotential($favoriteGenres)
+            ]
+        ];
+    }
+
+    private function getMostActivePeriod($user)
+    {
+        // This is a simplified implementation
+        // You could analyze timestamps to find actual peak activity periods
+        return 'Evening'; // Default response
+    }
+
+    private function calculatePreferenceStrength($favoriteGenres, $watchedCount)
+    {
+        if ($watchedCount == 0) return 'Unknown';
+        if (count($favoriteGenres) <= 2) return 'Strong';
+        if (count($favoriteGenres) <= 4) return 'Moderate';
+        return 'Diverse';
+    }
+
+    private function calculateProfileCompleteness($user)
+    {
+        $score = 0;
+
+        // Basic profile data
+        if ($user->name) $score += 20;
+        if ($user->email) $score += 10;
+
+        // Activity data
+        $watchedCount = $user->films()->wherePivot('watched', true)->count();
+        $reviewsCount = $user->reviews()->count();
+
+        if ($watchedCount > 0) $score += 30;
+        if ($watchedCount > 10) $score += 20;
+        if ($reviewsCount > 0) $score += 20;
+
+        return min(100, $score);
+    }
+
+    private function calculateRecommendationConfidence($watchedCount, $reviewsCount)
+    {
+        $confidence = 50; // Base confidence
+
+        if ($watchedCount > 10) $confidence += 20;
+        if ($watchedCount > 50) $confidence += 15;
+        if ($reviewsCount > 5) $confidence += 15;
+
+        return min(100, $confidence);
+    }
+
+    private function calculateDiscoveryPotential($favoriteGenres)
+    {
+        // More diverse preferences = higher discovery potential
+        $genreCount = count($favoriteGenres);
+
+        if ($genreCount >= 5) return 'High';
+        if ($genreCount >= 3) return 'Medium';
+        return 'Low';
+    }
+}