/**
 * VoiceoverSystem.js
 * ==================
 * KRVAVA ŽETEV - Ana's Voice & Flashback Audio
 * 
 * Features:
 * - Ana's voice recordings for clues
 * - Flashback narration
 * - Emotional voiceovers
 * - Audio positioning (3D sound)
 * - Volume based on bond strength
 * 
 * @author NovaFarma Team
 * @date 2025-12-25
 */

class VoiceoverSystem {
    constructor(scene) {
        this.scene = scene;

        // Audio state
        this.currentVoiceover = null;
        this.voiceoverQueue = [];
        this.isPlaying = false;

        // Audio library (paths to audio files)
        this.anaVoiceovers = {};
        this.flashbackVoiceovers = {};

        console.log('🎙️ VoiceoverSystem initialized');

        this.registerVoiceovers();
    }

    /**
     * Register all voiceover audio files
     */
    registerVoiceovers() {
        // ANA'S CLUE VOICEOVERS (15 messages)
        this.anaVoiceovers = {
            msg_01: {
                file: 'assets/audio/voiceover/ana_msg_01.mp3',
                text: "Kai, if you find this... I'm sorry. They took me. Stay safe.",
                duration: 5000,
                emotion: 'scared'
            },
            msg_02: {
                file: 'assets/audio/voiceover/ana_msg_02.mp3',
                text: "I'm marking my trail with red flowers. Follow them west.",
                duration: 4000,
                emotion: 'determined'
            },
            msg_03: {
                file: 'assets/audio/voiceover/ana_msg_03.mp3',
                text: "These zombies... they're intelligent. I saw it in their eyes.",
                duration: 5000,
                emotion: 'curious'
            },
            msg_06: {
                file: 'assets/audio/voiceover/ana_msg_06.mp3',
                text: "Kai... I can feel you searching for me. Our bond is so strong.",
                duration: 6000,
                emotion: 'hopeful'
            },
            msg_09: {
                file: 'assets/audio/voiceover/ana_msg_09.mp3',
                text: "I found research on a cure! There's still hope for everyone!",
                duration: 5000,
                emotion: 'excited'
            },
            msg_10: {
                file: 'assets/audio/voiceover/ana_msg_10.mp3',
                text: "I dream of having a family someday. Children playing in safe fields...",
                duration: 6000,
                emotion: 'wistful'
            },
            msg_14: {
                file: 'assets/audio/voiceover/ana_msg_14.mp3',
                text: "Don't come for me, Kai. It's too dangerous. Please, save yourself!",
                duration: 5000,
                emotion: 'desperate'
            },
            msg_15: {
                file: 'assets/audio/voiceover/ana_msg_15.mp3',
                text: "I know you won't listen... you never do. I love you, brother.",
                duration: 6000,
                emotion: 'loving'
            },

            // SPECIAL: Ana's Journal Entry
            ana_journal_01: {
                file: 'assets/audio/voiceover/ana_journal_01.mp3',
                text: "Day 147 in captivity. Dr. Krnić is forcing me to work on something terrible. A super virus using Chernobyl radiation. If it releases... everyone dies. I have to find a way to stop him.",
                duration: 15000,
                emotion: 'terrified'
            },

            // SPECIAL: Final Video Message
            ana_final_message: {
                file: 'assets/audio/voiceover/ana_final_message.mp3',
                text: "Kai... I'm in Dr. Krnić's facility. Level 3, Vault 7. If you're watching this... don't come. It's a trap. But I know you will anyway. *laughs sadly* Be ready for the Troll King. I love you. Twin bond forever.",
                duration: 20000,
                emotion: 'resigned'
            }
        };

        // FLASHBACK NARRATION
        this.flashbackVoiceovers = {
            twin_bond_discovery: {
                file: 'assets/audio/voiceover/flashback_twin_bond.mp3',
                text: "Dr. Chen: 'These twins have something special. A connection I've never seen before. They'll always find each other, no matter what.'",
                duration: 10000,
                emotion: 'wonder'
            },
            mother_death: {
                file: 'assets/audio/voiceover/flashback_mother.mp3',
                text: "Mama Elena: 'Kai... protect Ana. Always. Twin bond is your strength. Together... you can survive anything. I love you both...'",
                duration: 15000,
                emotion: 'heartbreaking'
            },
            kidnapping: {
                file: 'assets/audio/voiceover/flashback_kidnapping.mp3',
                text: "Ana's scream: 'KAIII! HELP! Please! KAIIIII!' *Kai's voice, desperate* 'ANA! NO! ANA!'",
                duration: 8000,
                emotion: 'traumatic'
            }
        };

        console.log(`✅ Registered ${Object.keys(this.anaVoiceovers).length} Ana voiceovers`);
        console.log(`✅ Registered ${Object.keys(this.flashbackVoiceovers).length} flashback voiceovers`);
    }

    /**
     * Play Ana's voiceover for a clue
     */
    playAnaVoiceover(clueId, onComplete = null) {
        const voiceover = this.anaVoiceovers[clueId];
        if (!voiceover) {
            console.warn(`⚠️ No voiceover for clue: ${clueId}`);
            return false;
        }

        console.log(`🎙️ Playing Ana's voice: ${clueId}`);

        // Queue if already playing
        if (this.isPlaying) {
            this.voiceoverQueue.push({ type: 'ana', id: clueId, onComplete });
            console.log(`⏳ Voiceover queued (${this.voiceoverQueue.length} in queue)`);
            return true;
        }

        this.isPlaying = true;

        // Show subtitle text
        this.showSubtitle(voiceover.text, voiceover.duration);

        // Play audio (if file exists)
        if (this.scene.sound.get(voiceover.file)) {
            this.currentVoiceover = this.scene.sound.play(voiceover.file, {
                volume: this.getVolumeBasedOnBondStrength()
            });

            // Cleanup when done
            this.currentVoiceover.once('complete', () => {
                this.onVoiceoverComplete(onComplete);
            });
        } else {
            // Fallback if audio file doesn't exist
            console.warn(`⚠️ Audio file not found: ${voiceover.file}`);

            // Simulate duration
            setTimeout(() => {
                this.onVoiceoverComplete(onComplete);
            }, voiceover.duration);
        }

        // Trigger Twin Bond moment
        if (this.scene.twinBondUI) {
            this.scene.twinBondUI.triggerBondMoment('medium');
        }

        return true;
    }

    /**
     * Play flashback narration
     */
    playFlashbackVoiceover(flashbackId, onComplete = null) {
        const voiceover = this.flashbackVoiceovers[flashbackId];
        if (!voiceover) {
            console.warn(`⚠️ No voiceover for flashback: ${flashbackId}`);
            return false;
        }

        console.log(`🎙️ Playing flashback: ${flashbackId}`);

        this.isPlaying = true;

        // Show subtitle
        this.showSubtitle(voiceover.text, voiceover.duration, '#FFD700'); // Gold color for flashbacks

        // Play audio
        if (this.scene.sound.get(voiceover.file)) {
            this.currentVoiceover = this.scene.sound.play(voiceover.file, {
                volume: 0.8
            });

            this.currentVoiceover.once('complete', () => {
                this.onVoiceoverComplete(onComplete);
            });
        } else {
            console.warn(`⚠️ Audio file not found: ${voiceover.file}`);
            setTimeout(() => {
                this.onVoiceoverComplete(onComplete);
            }, voiceover.duration);
        }

        return true;
    }

    /**
     * Show subtitle text on screen
     */
    showSubtitle(text, duration, color = '#9370DB') {
        const ui = this.scene.scene.get('UIScene') || this.scene;

        // Create subtitle container
        const subtitleBg = ui.add.rectangle(
            ui.cameras.main.width / 2,
            ui.cameras.main.height - 100,
            ui.cameras.main.width - 200,
            80,
            0x000000,
            0.7
        );
        subtitleBg.setScrollFactor(0);
        subtitleBg.setDepth(2000);

        const subtitleText = ui.add.text(
            ui.cameras.main.width / 2,
            ui.cameras.main.height - 100,
            text,
            {
                fontSize: '20px',
                fontFamily: 'Arial',
                color: color,
                align: 'center',
                wordWrap: { width: ui.cameras.main.width - 220 }
            }
        );
        subtitleText.setOrigin(0.5);
        subtitleText.setScrollFactor(0);
        subtitleText.setDepth(2001);

        // Fade in
        subtitleBg.setAlpha(0);
        subtitleText.setAlpha(0);

        ui.tweens.add({
            targets: [subtitleBg, subtitleText],
            alpha: 1,
            duration: 300
        });

        // Fade out and destroy
        setTimeout(() => {
            ui.tweens.add({
                targets: [subtitleBg, subtitleText],
                alpha: 0,
                duration: 500,
                onComplete: () => {
                    subtitleBg.destroy();
                    subtitleText.destroy();
                }
            });
        }, duration - 500);
    }

    /**
     * Get volume based on twin bond strength
     */
    getVolumeBasedOnBondStrength() {
        if (!this.scene.twinBondUI) {
            return 0.7; // Default volume
        }

        const bondStrength = this.scene.twinBondUI.getBondStrength();

        // Higher bond = louder voice
        const volume = 0.4 + (bondStrength / 100) * 0.6; // 0.4 to 1.0

        return volume;
    }

    /**
     * Voiceover completion handler
     */
    onVoiceoverComplete(callback) {
        this.isPlaying = false;
        this.currentVoiceover = null;

        // Call completion callback
        if (callback) {
            callback();
        }

        // Play next in queue
        if (this.voiceoverQueue.length > 0) {
            const next = this.voiceoverQueue.shift();

            setTimeout(() => {
                if (next.type === 'ana') {
                    this.playAnaVoiceover(next.id, next.onComplete);
                } else if (next.type === 'flashback') {
                    this.playFlashbackVoiceover(next.id, next.onComplete);
                }
            }, 500); // Small delay between voiceovers
        }
    }

    /**
     * Stop current voiceover
     */
    stopVoiceover() {
        if (this.currentVoiceover) {
            this.currentVoiceover.stop();
            this.currentVoiceover = null;
        }
        this.isPlaying = false;
    }

    /**
     * Clear queue
     */
    clearQueue() {
        this.voiceoverQueue = [];
    }

    /**
     * Check if voiceover is playing
     */
    isVoiceoverPlaying() {
        return this.isPlaying;
    }

    /**
     * Cleanup
     */
    destroy() {
        this.stopVoiceover();
        this.clearQueue();
    }
}