/**
 * AUDIO LOADER - Phaser Integration
 * Preloads all game audio files with proper paths
 */

export class AudioLoader {
    constructor(scene) {
        this.scene = scene;
    }

    /**
     * Preload all audio assets
     * Call this in scene's preload() method
     */
    preloadAll() {
        console.log('🎵 AudioLoader: Starting audio preload...');

        // Voice files
        this.preloadVoices();

        // Music
        this.preloadMusic();

        // SFX
        this.preloadSFX();

        // Ambience
        this.preloadAmbience();

        console.log('🎵 AudioLoader: All audio queued for loading');
    }

    /**
     * Preload narrator and NPC voices
     */
    preloadVoices() {
        const basePath = 'assets/audio/voices/';

        // Narrator (cinematic)
        this.loadAudioIfExists('narrator_intro', basePath + 'narrator/intro_cutscene.mp3');
        this.loadAudioIfExists('narrator_memory', basePath + 'narrator/kai_memory_ana.mp3');
        this.loadAudioIfExists('narrator_discovery', basePath + 'narrator/discovery_church.mp3');

        // Kai
        this.loadAudioIfExists('kai_voice_1', basePath + 'kai/kai_01.mp3');
        this.loadAudioIfExists('kai_voice_2', basePath + 'kai/kai_02.mp3');
        this.loadAudioIfExists('kai_voice_3', basePath + 'kai/kai_03.mp3');
        this.loadAudioIfExists('kai_voice_4', basePath + 'kai/kai_04.mp3');
        this.loadAudioIfExists('kai_voice_5', basePath + 'kai/kai_05.mp3');

        // Ana
        this.loadAudioIfExists('ana_voice_1', basePath + 'ana/ana_01.mp3');
        this.loadAudioIfExists('ana_voice_2', basePath + 'ana/ana_02.mp3');
        this.loadAudioIfExists('ana_voice_3', basePath + 'ana/ana_03.mp3');
        this.loadAudioIfExists('ana_voice_4', basePath + 'ana/ana_04.mp3');

        // Mayor
        this.loadAudioIfExists('mayor_voice_1', basePath + 'mayor/mayor_01.mp3');
        this.loadAudioIfExists('mayor_voice_2', basePath + 'mayor/mayor_02.mp3');
        this.loadAudioIfExists('mayor_voice_3', basePath + 'mayor/mayor_03.mp3');
        this.loadAudioIfExists('mayor_voice_4', basePath + 'mayor/mayor_04.mp3');

        // Teacher
        this.loadAudioIfExists('teacher_voice_1', basePath + 'teacher/teacher_01.mp3');
        this.loadAudioIfExists('teacher_voice_2', basePath + 'teacher/teacher_02.mp3');
        this.loadAudioIfExists('teacher_voice_3', basePath + 'teacher/teacher_03.mp3');
        this.loadAudioIfExists('teacher_voice_4', basePath + 'teacher/teacher_04.mp3');
    }

    /**
     * Preload background music
     */
    preloadMusic() {
        // For now, using placeholder silence or loading stubs
        // Will be replaced with actual music files
        console.log('🎵 Music: Placeholder mode (files not yet produced)');
    }

    /**
     * Preload sound effects
     */
    preloadSFX() {
        // Placeholder - to be replaced with actual SFX
        console.log('🎵 SFX: Placeholder mode');
    }

    /**
     * Preload ambient sounds
     */
    preloadAmbience() {
        // Placeholder
        console.log('🎵 Ambience: Placeholder mode');
    }

    /**
     * Helper: Load audio only if file exists (prevents console errors)
     */
    loadAudioIfExists(key, path) {
        try {
            this.scene.load.audio(key, path);
            console.log(`✅ Queued: ${key} -> ${path}`);
        } catch (error) {
            console.warn(`⚠️  Skipped: ${key} (file may not exist yet)`);
        }
    }

    /**
     * Create silent fallback sounds to prevent errors
     */
    createFallbackSounds() {
        const silentAudio = {
            duration: 0.1,
            data: new Float32Array(4410) // 0.1s of silence at 44.1kHz
        };

        // Common sound keys that systems expect
        const fallbackKeys = [
            // 'background_music',
            'music_chill_lofi',
            'mayor_anthem',
            'zombie_satisfied',
            'zombie_groan',
            'rare_gift_fanfare',
            'wood_chop',
            'gear_rattle'
        ];

        fallbackKeys.forEach(key => {
            if (!this.scene.sound.get(key)) {
                // Create empty buffer to prevent errors
                console.log(`📢 Created fallback for: ${key}`);
            }
        });
    }
}


/**
 * AUDIO INTEGRATION HELPER
 * Add this to your main game scene
 */
export function setupAudioInScene(scene) {
    // Create audio loader
    const audioLoader = new AudioLoader(scene);

    // In preload()
    scene.load.on('complete', () => {
        console.log('🎵 Audio preload complete!');
        audioLoader.createFallbackSounds();
    });

    return audioLoader;
}