// Vision Record System - Frontend Logic

var API_BASE = '';
var currentImageId = null;
var refreshTimer = null;

// Initialize
document.addEventListener('DOMContentLoaded', function() {
    loadConfig();
    refreshAll();
});

// Toast 提示（自动消失）
function showToast(message, duration) {
    duration = duration || 2000;
    var toast = document.createElement('div');
    toast.className = 'toast';
    toast.textContent = message;
    document.body.appendChild(toast);
    
    setTimeout(function() {
        toast.classList.add('fade-out');
        setTimeout(function() {
            toast.remove();
        }, 300);
    }, duration);
}

// 点击模态框背景关闭
function closeModalOnBackground(event, modalId) {
    if (event.target.id === modalId) {
        document.getElementById(modalId).classList.remove('active');
    }
}

function loadConfig() {
    fetch(API_BASE + '/api/config')
        .then(function(res) { return res.json(); })
        .then(function(config) {
            var interval = config.refresh_interval || 5;
            startAutoRefresh(interval);
            document.getElementById('refresh-info').textContent = 'Refresh: ' + interval + 's';
        })
        .catch(function(e) {
            console.error('Load config failed:', e);
            startAutoRefresh(5);
        });
}

function startAutoRefresh(intervalSeconds) {
    if (refreshTimer) {
        clearInterval(refreshTimer);
    }
    refreshTimer = setInterval(refreshAll, intervalSeconds * 1000);
}

function refreshAll() {
    loadStatus();
    loadImages();
    loadEvents();
}

// Status
function loadStatus() {
    fetch(API_BASE + '/api/status')
        .then(function(res) { return res.json(); })
        .then(function(data) {
            updateUI(data);
        })
        .catch(function(e) {
            console.error('Load status failed:', e);
        });
}

function updateUI(data) {
    var startBtn = document.getElementById('start-btn');
    var stopBtn = document.getElementById('stop-btn');
    
    if (data.scheduler.running) {
        startBtn.disabled = true;
        stopBtn.disabled = false;
        document.getElementById('scheduler-status').innerHTML = 'Status: Running';
    } else {
        startBtn.disabled = false;
        stopBtn.disabled = true;
        document.getElementById('scheduler-status').innerHTML = 'Status: Stopped';
    }
    
    document.getElementById('capture-count').textContent = 'Capture count: ' + data.scheduler.capture_count;
    document.getElementById('total-images').textContent = data.stats.total_images;
    document.getElementById('analyzed-images').textContent = data.stats.analyzed_images;
    document.getElementById('total-events').textContent = data.stats.total_events;
    
    // Event type filter
    var eventFilter = document.getElementById('event-filter');
    eventFilter.innerHTML = '<option value="all">All types</option>';
    data.stats.event_types.forEach(function(item) {
        var opt = document.createElement('option');
        opt.value = item.type;
        opt.textContent = item.type + ' (' + item.count + ')';
        eventFilter.appendChild(opt);
    });
}

// Control
function startScheduler() {
    fetch(API_BASE + '/api/scheduler/start', {method: 'POST'})
        .then(function(res) { return res.json(); })
        .then(function(data) {
            if (data.success) {
                showToast('Started!', 1500);
                refreshAll();
            } else {
                showToast('Failed: ' + data.error, 3000);
            }
        })
        .catch(function(e) { showToast('Error: ' + e.message, 3000); });
}

function stopScheduler() {
    fetch(API_BASE + '/api/scheduler/stop', {method: 'POST'})
        .then(function(res) { return res.json(); })
        .then(function(data) {
            if (data.success) {
                showToast('Stopped!', 1500);
                refreshAll();
            }
        })
        .catch(function(e) { showToast('Error: ' + e.message, 3000); });
}

function captureNow() {
    fetch(API_BASE + '/api/capture', {method: 'POST'})
        .then(function(res) { return res.json(); })
        .then(function(data) {
            if (data.success) {
                showToast('Captured! ID: ' + data.image_id, 1500);
                refreshAll();
            } else {
                showToast('Failed: ' + data.error, 3000);
            }
        })
        .catch(function(e) { showToast('Error: ' + e.message, 3000); });
}

function analyzeUnanalyzed() {
    fetch(API_BASE + '/api/analyze/unanalyzed', {method: 'POST'})
        .then(function(res) { return res.json(); })
        .then(function(data) {
            showToast('Analyzed ' + data.results.length + ' images', 1500);
            refreshAll();
        })
        .catch(function(e) { showToast('Error: ' + e.message, 3000); });
}

// Images
function loadImages() {
    var filter = document.getElementById('image-filter').value;
    var analyzedOnly = filter === 'analyzed';
    
    fetch(API_BASE + '/api/images?limit=50&analyzed_only=' + analyzedOnly)
        .then(function(res) { return res.json(); })
        .then(function(data) {
            renderImages(data.images);
        })
        .catch(function(e) { console.error('Load images failed:', e); });
}

function renderImages(images) {
    var list = document.getElementById('images-list');
    list.innerHTML = '';
    
    if (images.length === 0) {
        list.innerHTML = '<p style="color:#888;text-align:center;">No images</p>';
        return;
    }
    
    images.forEach(function(img) {
        var item = document.createElement('div');
        item.className = 'image-item ' + (img.analyzed ? 'analyzed' : 'unanalyzed');
        item.onclick = function() { openImageModal(img.id); };
        
        var time = new Date(img.timestamp).toLocaleString();
        var status = img.analyzed ? 'Analyzed' : 'Unanalyzed';
        var events = img.events_summary || 'No events';
        
        item.innerHTML = '<span class="image-number">#' + img.id + '</span>' +
            '<span class="image-time">' + time + '</span>' +
            '<span class="image-status">' + status + '</span>' +
            '<span class="image-events-summary">' + events + '</span>';
        
        list.appendChild(item);
    });
}

function openImageModal(imageId) {
    currentImageId = imageId;
    
    fetch(API_BASE + '/api/images/' + imageId)
        .then(function(res) { return res.json(); })
        .then(function(data) {
            var filename = data.path.split('/').pop().split('\\').pop();
            document.getElementById('modal-image').src = '/images/' + filename;
            document.getElementById('modal-title').textContent = 'Image #' + data.id;
            document.getElementById('modal-time').textContent = 'Time: ' + new Date(data.timestamp).toLocaleString();
            
            var eventsDiv = document.getElementById('modal-events');
            eventsDiv.innerHTML = '';
            
            if (data.events && data.events.length > 0) {
                // 分组显示
                var localEvents = [];
                var aiEvents = [];
                
                data.events.forEach(function(event) {
                    if (event.event_type.indexOf('(本地)') >= 0) {
                        localEvents.push(event);
                    } else if (event.event_type.indexOf('(AI)') >= 0) {
                        aiEvents.push(event);
                    } else {
                        localEvents.push(event);
                    }
                });
                
                // 本地分析结果
                if (localEvents.length > 0) {
                    var localSection = document.createElement('div');
                    localSection.className = 'modal-events-section';
                    localSection.innerHTML = '<h4 class="section-title local">Local Analysis (' + localEvents.length + ') </h4>';
                    
                    localEvents.forEach(function(event) {
                        var div = document.createElement('div');
                        div.className = 'modal-event source-local';
                        var eventType = event.event_type.replace('(本地)', '').trim();
                        div.innerHTML = '<span class="event-type">' + eventType + '</span> ' +
                            '<span class="event-confidence">' + event.confidence + '</span>' +
                            '<div>' + event.description + '</div>';
                        localSection.appendChild(div);
                    });
                    
                    eventsDiv.appendChild(localSection);
                }
                
                // AI分析结果
                if (aiEvents.length > 0) {
                    var aiSection = document.createElement('div');
                    aiSection.className = 'modal-events-section';
                    aiSection.innerHTML = '<h4 class="section-title ai">AI Analysis (' + aiEvents.length + ') </h4>';
                    
                    aiEvents.forEach(function(event) {
                        var div = document.createElement('div');
                        div.className = 'modal-event source-ai';
                        var eventType = event.event_type.replace('(AI)', '').trim();
                        div.innerHTML = '<span class="event-type">' + eventType + '</span> ' +
                            '<span class="event-confidence">' + event.confidence + '</span>' +
                            '<div>' + event.description + '</div>';
                        aiSection.appendChild(div);
                    });
                    
                    eventsDiv.appendChild(aiSection);
                }
            } else {
                eventsDiv.innerHTML = '<p style="color:#888;">No events recorded</p>';
            }
            
            document.getElementById('image-modal').classList.add('active');
        })
        .catch(function(e) { console.error('Load image failed:', e); });
}

function closeImageModal() {
    document.getElementById('image-modal').classList.remove('active');
    currentImageId = null;
}

function analyzeCurrentImage() {
    if (!currentImageId) return;
    
    fetch(API_BASE + '/api/analyze/' + currentImageId, {method: 'POST'})
        .then(function(res) { return res.json(); })
        .then(function(data) {
            if (data.success) {
                alert('Analyzed!');
                openImageModal(currentImageId);
                refreshAll();
            } else {
                alert('Failed: ' + data.error);
            }
        })
        .catch(function(e) { alert('Error: ' + e.message); });
}

function deleteCurrentImage() {
    if (!currentImageId) return;
    if (!confirm('Delete this image?')) return;
    
    fetch(API_BASE + '/api/images/' + currentImageId, {method: 'DELETE'})
        .then(function(res) { return res.json(); })
        .then(function(data) {
            if (data.success) {
                closeImageModal();
                refreshAll();
            }
        })
        .catch(function(e) { alert('Error: ' + e.message); });
}

// Events
function loadEvents() {
    var filter = document.getElementById('event-filter').value;
    var eventType = filter === 'all' ? '' : filter;
    
    var url = API_BASE + '/api/events?limit=50';
    if (eventType) {
        url += '&event_type=' + encodeURIComponent(eventType);
    }
    
    fetch(url)
        .then(function(res) { return res.json(); })
        .then(function(data) {
            renderEvents(data.events);
        })
        .catch(function(e) { console.error('Load events failed:', e); });
}

function renderEvents(events) {
    var list = document.getElementById('events-list');
    list.innerHTML = '';
    
    if (events.length === 0) {
        list.innerHTML = '<p style="color:#888;text-align:center;">No events</p>';
        return;
    }
    
    // 分组显示：本地分析和AI分析
    var localEvents = [];
    var aiEvents = [];
    
    events.forEach(function(event) {
        if (event.event_type.indexOf('(本地)') >= 0 || event.event_type.indexOf('(local)') >= 0) {
            localEvents.push(event);
        } else if (event.event_type.indexOf('(AI)') >= 0) {
            aiEvents.push(event);
        } else {
            localEvents.push(event);
        }
    });
    
    // 显示本地分析结果
    if (localEvents.length > 0) {
        var localHeader = document.createElement('div');
        localHeader.className = 'events-header';
        localHeader.innerHTML = '<span class="header-label local">Local Analysis</span><span class="header-count">' + localEvents.length + ' events</span>';
        list.appendChild(localHeader);
        
        localEvents.forEach(function(event) {
            var card = createEventCard(event, 'local');
            list.appendChild(card);
        });
    }
    
    // 显示AI分析结果
    if (aiEvents.length > 0) {
        var aiHeader = document.createElement('div');
        aiHeader.className = 'events-header';
        aiHeader.innerHTML = '<span class="header-label ai">AI Analysis</span><span class="header-count">' + aiEvents.length + ' events</span>';
        list.appendChild(aiHeader);
        
        aiEvents.forEach(function(event) {
            var card = createEventCard(event, 'ai');
            list.appendChild(card);
        });
    }
}

function createEventCard(event, source) {
    var card = document.createElement('div');
    card.className = 'event-card type-' + event.event_type.replace('(本地)', '').replace('(AI)', '').trim() + ' source-' + source;
    card.onclick = function() { openImageModal(event.image_id); };
    
    var time = new Date(event.timestamp).toLocaleString();
    var eventType = event.event_type.replace('(本地)', '').replace('(AI)', '').trim();
    
    card.innerHTML = '<div class="event-header">' +
        '<span class="event-type">' + eventType + '</span>' +
        '<span class="event-source">' + (source === 'local' ? 'Local' : 'AI') + '</span>' +
        '<span class="event-time">' + time + '</span></div>' +
        '<div class="event-desc">' + event.description + '</div>' +
        '<div class="event-confidence">' + event.confidence + '</div>';
    
    return card;
}

// Filter listeners
document.getElementById('image-filter').addEventListener('change', loadImages);
document.getElementById('event-filter').addEventListener('change', loadEvents);

// Settings
function openSettingsModal() {
    loadSettingsForm();
    document.getElementById('settings-modal').classList.add('active');
}

function closeSettingsModal() {
    document.getElementById('settings-modal').classList.remove('active');
}

function loadSettingsForm() {
    fetch(API_BASE + '/api/config')
        .then(function(res) { return res.json(); })
        .then(function(config) {
            document.getElementById('setting-images-dir').value = config.images_dir || '';
            document.getElementById('setting-interval').value = config.capture_interval || 60;
            document.getElementById('setting-camera-index').value = config.camera_index || 0;
            document.getElementById('setting-auto-analyze').checked = config.auto_analyze !== false;
            document.getElementById('setting-display-limit').value = config.display_limit || 20;
            document.getElementById('setting-refresh-interval').value = config.refresh_interval || 5;
            document.getElementById('setting-api-url').value = config.vision_api_url || '';
            document.getElementById('setting-api-key').value = config.vision_api_key || '';
            document.getElementById('setting-model').value = config.vision_model || '';
        })
        .catch(function(e) { console.error('Load settings failed:', e); });
}

function saveSettings() {
    var settings = {
        images_dir: document.getElementById('setting-images-dir').value,
        capture_interval: parseInt(document.getElementById('setting-interval').value),
        camera_index: parseInt(document.getElementById('setting-camera-index').value),
        auto_analyze: document.getElementById('setting-auto-analyze').checked,
        display_limit: parseInt(document.getElementById('setting-display-limit').value),
        refresh_interval: parseInt(document.getElementById('setting-refresh-interval').value),
        vision_api_url: document.getElementById('setting-api-url').value,
        vision_api_key: document.getElementById('setting-api-key').value,
        vision_model: document.getElementById('setting-model').value
    };
    
    fetch(API_BASE + '/api/config', {
        method: 'POST',
        headers: {'Content-Type': 'application/json'},
        body: JSON.stringify(settings)
    })
        .then(function(res) { return res.json(); })
        .then(function(data) {
            if (data.success) {
                alert('Settings saved!');
                closeSettingsModal();
                // Reload config to apply new refresh interval
                loadConfig();
                refreshAll();
            }
        })
        .catch(function(e) { alert('Error: ' + e.message); });
}

function browseImagesDir() {
    alert('Please enter the path manually.\nExample: D:\\vision-images\nImages will be saved to date subfolders automatically.');
}