<?php
// ============================================================
// marketing_engine/services/AIVideoGenerator.php
// Wrapper and Abstract Interfaces for AI Generation APIs
// ============================================================

class AIVideoGenerator {
    private $elevenLabsApiKey;
    private $creatomateApiKey;
    private $geminiApiKey;
    
    public function __construct() {
        $this->elevenLabsApiKey = getenv('ELEVENLABS_API_KEY');
        $this->creatomateApiKey = getenv('CREATOMATE_API_KEY');
        $this->geminiApiKey = getenv('GEMINI_API_KEY');
    }
    // Abstracted text generation
    public function generateScript($topic) {
        // Here you would call Gemini API to generate a video script about the topic
        // For example: "Write a 30 second TikTok script about how ride hailing drivers lose too much commission, and how Siro fixes this."
        
        // Mock implementation
        $prompt = "Write a short 20-word script about: " . $topic;
        $mockScript = "Drivers are tired of high commissions. Siro is the solution with 0% commission forever. Join Siro today!";
        
        return [
            'status' => 'success',
            'script' => $mockScript
        ];
    }
    
    // Abstracted voice generation
    public function generateVoice($scriptText) {
        // Here you would call ElevenLabs API (or similar) to convert text to speech
        // It returns an MP3 file or URL
        
        // Mock implementation
        $mockAudioUrl = "https://example.com/audio_mock_".time().".mp3";
        
        return [
            'status' => 'success',
            'audio_url' => $mockAudioUrl
        ];
    }
    
    // Abstracted video rendering
    public function renderVideo($scriptText, $audioUrl, $backgroundVideoUrl = null) {
        // Here you would call Creatomate or HeyGen to render the final MP4
        // Combining the audio, background, and burning the captions on screen
        
        // Mock implementation
        $mockVideoUrl = "https://example.com/rendered_video_".time().".mp4";
        
        return [
            'status' => 'success',
            'video_url' => $mockVideoUrl
        ];
    }
}