/**
 * Shortcodes JavaScript - 实况照片、语音、音乐卡片
 * 移植自 Hugo-Theme-Amigo
 */

// ============================================================
// Global Audio Manager - 全局音频/视频管理器
// 确保所有音频控件互斥播放，PJAX 切换时保存进度
// ============================================================

var AudioManager = {
    currentPlaying: null,
    currentType: null,
    savedStates: {},

    pauseAll: function() {
        // Pause all voice bubbles
        document.querySelectorAll('.amigo-voice-bubble.is-playing').forEach(function(bubble) {
            if (bubble.__audio) {
                try {
                    bubble.__audio.pause();
                    bubble.__audio.currentTime = 0;
                } catch (e) {}
            }
            bubble.classList.remove('is-playing');
        });

        // Pause all music cards
        document.querySelectorAll('.amigo-music-card[data-playing="true"]').forEach(function(card) {
            if (card.__audio) {
                try { card.__audio.pause(); } catch (e) {}
            }
            card.setAttribute('data-playing', 'false');
            var playBtn = card.querySelector('.amigo-music-card__play');
            if (playBtn) playBtn.setAttribute('aria-pressed', 'false');
        });

        // Pause all live photos
        document.querySelectorAll('.amigo-livephoto.is-playing').forEach(function(livePhoto) {
            var video = livePhoto.querySelector('.amigo-livephoto-video');
            if (video) {
                try { video.pause(); video.currentTime = 0; } catch (e) {}
            }
            livePhoto.classList.remove('is-playing');
        });

        this.currentPlaying = null;
        this.currentType = null;
    },

    registerPlay: function(element, type) {
        if (this.currentPlaying && this.currentPlaying !== element) {
            this.pauseAll();
        }
        this.currentPlaying = element;
        this.currentType = type;
    },

    saveState: function() {
        var states = [];

        // Save music card states
        document.querySelectorAll('.amigo-music-card').forEach(function(card, index) {
            var audio = card.__audio;
            if (audio && audio.src) {
                states.push({
                type: 'music',
                src: card.dataset.src,
                currentTime: audio.currentTime,
                isPlaying: card.getAttribute('data-playing') === 'true',
                index: index
            });
            }
        });

        // Save live photo states
        document.querySelectorAll('.amigo-livephoto').forEach(function(livePhoto, index) {
            var video = livePhoto.querySelector('.amigo-livephoto-video');
            if (video && video.src) {
                states.push({
                    type: 'livephoto',
                    src: livePhoto.dataset.src,
                    currentTime: video.currentTime,
                    isPlaying: livePhoto.classList.contains('is-playing'),
                    index: index
                });
            }
        });

        this.savedStates[window.location.pathname] = states;
    },

    restoreState: function() {
        var path = window.location.pathname;
        var states = this.savedStates[path];
        if (!states || states.length === 0) return;

        states.forEach(function(state) {
            if (state.type === 'music') {
                var cards = document.querySelectorAll('.amigo-music-card');
                var card = cards[state.index];
                if (card && card.__audio && card.dataset.src === state.src) {
                    var audio = card.__audio;
                    var playBtn = card.querySelector('.amigo-music-card__play');
                    var seekInput = card.querySelector('.amigo-music-card__seek');
                    var currentTimeEl = card.querySelector('.amigo-music-card__time--current');

                    audio.addEventListener('loadedmetadata', function onLoaded() {
                        audio.currentTime = state.currentTime;
                        audio.removeEventListener('loadedmetadata', onLoaded);

                        if (currentTimeEl) {
                            currentTimeEl.textContent = formatTime(state.currentTime);
                        }
                        if (seekInput && audio.duration) {
                            var progress = (state.currentTime / audio.duration) * 100;
                            seekInput.value = (state.currentTime / audio.duration * 1000).toString();
                            card.style.setProperty('--music-progress', progress + '%');
                        }

                        if (state.isPlaying) {
                            audio.play().catch(function() {});
                            card.setAttribute('data-playing', 'true');
                            if (playBtn) playBtn.setAttribute('aria-pressed', 'true');
                            AudioManager.currentPlaying = card;
                            AudioManager.currentType = 'music';
                        }
                    });

                    if (audio.readyState >= 1) {
                        audio.currentTime = state.currentTime;
                        if (currentTimeEl) {
                            currentTimeEl.textContent = formatTime(state.currentTime);
                        }
                        if (seekInput && audio.duration) {
                            var progress = (state.currentTime / audio.duration) * 100;
                            seekInput.value = (state.currentTime / audio.duration * 1000).toString();
                            card.style.setProperty('--music-progress', progress + '%');
                        }
                        if (state.isPlaying) {
                            audio.play().catch(function() {});
                            card.setAttribute('data-playing', 'true');
                            if (playBtn) playBtn.setAttribute('aria-pressed', 'true');
                            AudioManager.currentPlaying = card;
                            AudioManager.currentType = 'music';
                        }
                    }
                }
            } else if (state.type === 'livephoto') {
                var photos = document.querySelectorAll('.amigo-livephoto');
                var livePhoto = photos[state.index];
                if (livePhoto && livePhoto.dataset.src === state.src) {
                    var video = livePhoto.querySelector('.amigo-livephoto-video');
                    if (video) {
                        var src = livePhoto.dataset.src || '';
                        if (src && !video.getAttribute('src')) {
                            video.setAttribute('src', src);
                            video.src = src;
                        }

                        video.addEventListener('loadedmetadata', function onLoaded() {
                            video.currentTime = state.currentTime;
                            video.removeEventListener('loadedmetadata', onLoaded);

                            if (state.isPlaying) {
                                video.play().catch(function() {});
                                livePhoto.classList.add('is-playing');
                                AudioManager.currentPlaying = livePhoto;
                                AudioManager.currentType = 'livephoto';
                            }
                        });

                        if (video.readyState >= 1) {
                            video.currentTime = state.currentTime;
                            if (state.isPlaying) {
                                video.play().catch(function() {});
                                livePhoto.classList.add('is-playing');
                                AudioManager.currentPlaying = livePhoto;
                                AudioManager.currentType = 'livephoto';
                            }
                        }
                    }
                }
            }
        });
    }
};

// ============================================================
// Live Photo
// ============================================================

function initLivePhotoShortcodes() {
    document.querySelectorAll('.amigo-livephoto').forEach(function(livePhoto) {
        if (livePhoto.__liveBound) return;
        livePhoto.__liveBound = true;

        var video = livePhoto.querySelector('.amigo-livephoto-video');
        var posterImg = livePhoto.querySelector('.amigo-livephoto-img');
        var soundBtn = livePhoto.querySelector('.amigo-livephoto-sound');

        if (!video) return;

        var HOVER_DELAY = 500;
        var hoverTimer = null;
        var isLoaded = false;
        var isUserToggled = false;

        function ensureLoaded() {
            if (isLoaded) return;
            isLoaded = true;
            var src = video.dataset.src || '';
            if (src && !video.getAttribute('src')) {
                video.setAttribute('src', src);
                video.src = src;
            }
            try { video.load(); } catch (e) {}
        }

        function setMuted(isMuted) {
            video.muted = !!isMuted;
            if (isMuted) {
                video.setAttribute('muted', '');
                livePhoto.classList.add('is-muted');
            } else {
                video.removeAttribute('muted');
                livePhoto.classList.remove('is-muted');
            }
        }

        function playVideo() {
            ensureLoaded();
            AudioManager.registerPlay(livePhoto, 'livephoto');
            livePhoto.classList.add('is-playing');
            try { video.play(); } catch (e) {}
        }

        function stopVideo() {
            livePhoto.classList.remove('is-playing');
            try { video.pause(); video.currentTime = 0; } catch (e) {}
            if (AudioManager.currentPlaying === livePhoto) {
                AudioManager.currentPlaying = null;
                AudioManager.currentType = null;
            }
        }

        function togglePlay() {
            if (livePhoto.classList.contains('is-playing')) {
                isUserToggled = false;
                stopVideo();
            } else {
                isUserToggled = true;
                playVideo();
            }
        }

        // Click to toggle
        livePhoto.addEventListener('click', function() {
            togglePlay();
        });

        // Sound button click
        if (soundBtn) {
            soundBtn.addEventListener('click', function(e) {
                e.stopPropagation();
                setMuted(!video.muted);
            });
        }

        // Hover to play (desktop)
        if ('ontouchstart' in window === false) {
            livePhoto.addEventListener('mouseenter', function() {
                if (isUserToggled) return;
                hoverTimer = setTimeout(playVideo, HOVER_DELAY);
            });

            livePhoto.addEventListener('mouseleave', function() {
                clearTimeout(hoverTimer);
                if (!isUserToggled) {
                    stopVideo();
                }
            });
        }

        // Video ended
        video.addEventListener('ended', function() {
            livePhoto.classList.remove('is-playing');
            isUserToggled = false;
            if (AudioManager.currentPlaying === livePhoto) {
                AudioManager.currentPlaying = null;
                AudioManager.currentType = null;
            }
        });

        // Initialize muted state
        setMuted(livePhoto.classList.contains('is-muted'));
    });
}

// ============================================================
// Voice Bubble
// ============================================================

function initVoiceBubbles() {
    document.querySelectorAll('.amigo-voice-bubble').forEach(function(bubble) {
        if (bubble.__voiceBound) return;
        bubble.__voiceBound = true;

        var audioSrc = bubble.dataset.src;
        var audio = null;
        var isPlaying = false;
        var durationSpan = bubble.querySelector('.amigo-voice-duration');

        // Load audio duration
        if (audioSrc) {
            audio = new Audio(audioSrc);
            bubble.__audio = audio;
            audio.addEventListener('loadedmetadata', function() {
                var duration = Math.round(audio.duration);
                if (durationSpan) {
                    durationSpan.textContent = duration + '"';
                }
            });
        }

        bubble.addEventListener('click', function() {
            if (!audio) return;

            if (isPlaying) {
                audio.pause();
                audio.currentTime = 0;
                bubble.classList.remove('is-playing');
                isPlaying = false;
                if (AudioManager.currentPlaying === bubble) {
                    AudioManager.currentPlaying = null;
                    AudioManager.currentType = null;
                }
            } else {
                AudioManager.registerPlay(bubble, 'voice');
                audio.play();
                bubble.classList.add('is-playing');
                isPlaying = true;
            }
        });

        audio.addEventListener('ended', function() {
            bubble.classList.remove('is-playing');
            isPlaying = false;
            if (AudioManager.currentPlaying === bubble) {
                AudioManager.currentPlaying = null;
                AudioManager.currentType = null;
            }
        });
    });
}

// ============================================================
// Music Card
// ============================================================

function initMusicCards() {
    document.querySelectorAll('.amigo-music-card').forEach(function(card) {
        if (card.__musicBound) return;
        card.__musicBound = true;

        var audioSrc = card.dataset.src;
        var playBtn = card.querySelector('.amigo-music-card__play');
        var seekInput = card.querySelector('.amigo-music-card__seek');
        var currentTime = card.querySelector('.amigo-music-card__time--current');
        var durationTime = card.querySelector('.amigo-music-card__time--duration');
        var audio = null;
        var isPlaying = false;

        if (!audioSrc) return;

        audio = new Audio(audioSrc);
        card.__audio = audio;

        // Load metadata
        audio.addEventListener('loadedmetadata', function() {
            var duration = formatTime(audio.duration);
            if (durationTime) durationTime.textContent = duration;
        });

        // Update progress
        audio.addEventListener('timeupdate', function() {
            if (currentTime) currentTime.textContent = formatTime(audio.currentTime);
            if (seekInput && audio.duration) {
                var progress = (audio.currentTime / audio.duration) * 100;
                seekInput.value = (audio.currentTime / audio.duration * 1000).toString();
                card.style.setProperty('--music-progress', progress + '%');
            }
        });

        // Play/Pause
        function togglePlay() {
            if (isPlaying) {
                audio.pause();
                card.setAttribute('data-playing', 'false');
                if (playBtn) playBtn.setAttribute('aria-pressed', 'false');
                isPlaying = false;
                if (AudioManager.currentPlaying === card) {
                    AudioManager.currentPlaying = null;
                    AudioManager.currentType = null;
                }
            } else {
                AudioManager.registerPlay(card, 'music');
                audio.play();
                card.setAttribute('data-playing', 'true');
                if (playBtn) playBtn.setAttribute('aria-pressed', 'true');
                isPlaying = true;
            }
        }

        if (playBtn) {
            playBtn.addEventListener('click', function(e) {
                e.stopPropagation();
                togglePlay();
            });
        }

        card.addEventListener('click', togglePlay);

        // Seek
        if (seekInput) {
            seekInput.addEventListener('input', function() {
                if (audio.duration) {
                    var progress = (parseFloat(seekInput.value) / 1000) * 100;
                    audio.currentTime = (parseFloat(seekInput.value) / 1000) * audio.duration;
                    card.style.setProperty('--music-progress', progress + '%');
                }
            });
        }

        // Ended
        audio.addEventListener('ended', function() {
            card.setAttribute('data-playing', 'false');
            if (playBtn) playBtn.setAttribute('aria-pressed', 'false');
            isPlaying = false;
            if (AudioManager.currentPlaying === card) {
                AudioManager.currentPlaying = null;
                AudioManager.currentType = null;
            }
        });
    });
}

function formatTime(seconds) {
    var m = Math.floor(seconds / 60);
    var s = Math.floor(seconds % 60);
    return m + ':' + (s < 10 ? '0' : '') + s;
}

// ============================================================
// Cleanup functions for PJAX
// ============================================================

function cleanupVoiceBubbles() {
    document.querySelectorAll('.amigo-voice-bubble').forEach(function(bubble) {
        if (bubble.__audio) {
            try {
                bubble.__audio.pause();
                bubble.__audio.src = '';
                bubble.__audio = null;
            } catch (e) {}
        }
        bubble.__voiceBound = false;
    });
}

function cleanupMusicCards() {
    document.querySelectorAll('.amigo-music-card').forEach(function(card) {
        if (card.__audio) {
            try {
                card.__audio.pause();
                card.__audio.src = '';
                card.__audio = null;
            } catch (e) {}
        }
        card.__musicBound = false;
    });
}

function cleanupLivePhotos() {
    document.querySelectorAll('.amigo-livephoto').forEach(function(livePhoto) {
        var video = livePhoto.querySelector('video');
        if (video) {
            try {
                video.pause();
                video.src = '';
            } catch (e) {}
        }
        livePhoto.__liveBound = false;
    });
}

function cleanupAllShortcodes() {
    // Save playback state before cleanup
    AudioManager.saveState();
    
    cleanupVoiceBubbles();
    cleanupMusicCards();
    cleanupLivePhotos();
    
    AudioManager.currentPlaying = null;
    AudioManager.currentType = null;
}

// ============================================================
// Initialize all shortcodes
// ============================================================

function initAllShortcodes() {
    initLivePhotoShortcodes();
    initVoiceBubbles();
    initMusicCards();
    
    // Restore playback state after initialization
    setTimeout(function() {
        AudioManager.restoreState();
    }, 50);
}

// DOMContentLoaded
document.addEventListener('DOMContentLoaded', initAllShortcodes);

// Page load
window.addEventListener('load', initAllShortcodes);

// If DOM is already ready (script loaded late), initialize immediately
if (document.readyState === 'interactive' || document.readyState === 'complete') {
    initAllShortcodes();
}

// PJAX support - cleanup before and re-initialize after page transition
document.addEventListener('pjax:beforeSend', cleanupAllShortcodes);
document.addEventListener('pjax:complete', initAllShortcodes);
document.addEventListener('pjax:success', initAllShortcodes);

// Also listen for custom events that some PJAX libraries fire
document.addEventListener('page:loaded', initAllShortcodes);
document.addEventListener('page:change', initAllShortcodes);
document.addEventListener('turbo:load', initAllShortcodes);
document.addEventListener('turbo:before-render', cleanupAllShortcodes);

// History API based navigation
document.addEventListener('popstate', function() {
    cleanupAllShortcodes();
    setTimeout(initAllShortcodes, 10);
});