LEDMatrix/web_interface/templates/v3/partials/fonts.html

<div class="bg-white rounded-lg shadow p-6">
    <div class="border-b border-gray-200 pb-4 mb-6">
        <h2 class="text-lg font-semibold text-gray-900">Font Management</h2>
        <p class="mt-1 text-sm text-gray-600">Manage custom fonts, overrides, and system font configuration for your LED matrix display.</p>
    </div>

    <!-- Font System Overview -->
    <div class="grid grid-cols-1 md:grid-cols-2 xl:grid-cols-2 2xl:grid-cols-2 gap-6 mb-8">
        <!-- Detected Fonts from Managers -->
        <div class="bg-gray-50 rounded-lg p-4">
            <h3 class="text-md font-medium text-gray-900 mb-3">Detected Manager Fonts</h3>
            <div id="detected-fonts" class="bg-gray-800 text-gray-100 font-mono text-sm p-3 rounded h-40 overflow-y-auto">
                <div class="text-gray-400">Loading...</div>
            </div>
            <p class="text-sm text-gray-600 mt-2">Fonts currently in use by managers (auto-detected)</p>
        </div>

        <!-- Available Fonts -->
        <div class="bg-gray-50 rounded-lg p-4">
            <h3 class="text-md font-medium text-gray-900 mb-3">Available Font Families</h3>
            <div id="available-fonts" class="bg-gray-800 text-gray-100 font-mono text-sm p-3 rounded h-40 overflow-y-auto">
                <div class="text-gray-400">Loading...</div>
            </div>
            <p class="text-sm text-gray-600 mt-2">All available font families in the system</p>
        </div>
    </div>

    <!-- Font Upload -->
    <div class="bg-gray-50 rounded-lg p-4 mb-8">
        <h3 class="text-md font-medium text-gray-900 mb-4">Upload Custom Fonts</h3>
        <p class="text-sm text-gray-600 mb-4">Upload your own TTF, OTF, or BDF font files to use in your LED matrix display.</p>

        <div class="font-upload-area" id="font-upload-area">
            <div class="upload-dropzone" id="upload-dropzone">
                <i class="fas fa-cloud-upload-alt text-3xl text-gray-400 mb-3"></i>
                <p class="text-gray-600">Drag and drop font files here, or click to select</p>
                <p class="text-sm text-gray-500">Supports .ttf, .otf, and .bdf files</p>
                <input type="file" id="font-file-input" accept=".ttf,.otf,.bdf" multiple style="display: none;">
            </div>
        </div>

        <div class="upload-form" id="upload-form" style="display: none;">
            <div class="mt-4 p-4 bg-white rounded border">
                <h4 class="text-sm font-medium text-gray-900 mb-3">Selected Files</h4>
                <div id="selected-files" class="space-y-2 mb-4">
                    <!-- Files will be listed here -->
                </div>

                <div class="grid grid-cols-1 md:grid-cols-2 gap-4">
                    <div>
                        <label class="block text-sm font-medium text-gray-700 mb-1">Font Family Name</label>
                        <input type="text" id="upload-font-family" class="form-control" placeholder="e.g., my-custom-font">
                        <p class="text-sm text-gray-600 mt-1">Custom name for this font (letters, numbers, underscores, hyphens)</p>
                    </div>
                    <div class="flex items-end">
                        <button type="button" id="upload-fonts-btn" class="btn bg-blue-600 hover:bg-blue-700 text-white px-4 py-2">
                            <i class="fas fa-upload mr-2"></i>Upload Fonts
                        </button>
                        <button type="button" id="cancel-upload-btn" class="btn bg-gray-600 hover:bg-gray-700 text-white px-4 py-2 ml-2">
                            <i class="fas fa-times mr-2"></i>Cancel
                        </button>
                    </div>
                </div>
            </div>
        </div>

        <!-- Upload Progress -->
        <div id="upload-progress" class="mt-4 hidden">
            <div class="bg-white rounded p-4 border">
                <div class="flex items-center justify-between mb-2">
                    <span class="text-sm font-medium">Uploading...</span>
                    <span id="upload-percent" class="text-sm">0%</span>
                </div>
                <div class="w-full bg-gray-200 rounded-full h-2">
                    <div id="upload-progress-bar" class="bg-blue-600 h-2 rounded-full" style="width: 0%"></div>
                </div>
            </div>
        </div>
    </div>

    <!-- Font Overrides -->
    <div class="bg-gray-50 rounded-lg p-4 mb-8">
        <h3 class="text-md font-medium text-gray-900 mb-4">Element Font Overrides</h3>
        <p class="text-sm text-gray-600 mb-4">Override fonts for specific display elements. Changes take effect immediately.</p>

        <!-- Add New Override -->
        <div class="grid grid-cols-1 md:grid-cols-4 xl:grid-cols-4 2xl:grid-cols-4 gap-4 mb-4 p-4 bg-white rounded border">
            <div>
                <label class="block text-sm font-medium text-gray-700 mb-1">Element</label>
                <select id="override-element" class="form-control text-sm">
                    <option value="">Select an element...</option>
                    <optgroup label="Sports">
                        <option value="nfl.live.score">NFL Live Score</option>
                        <option value="nfl.live.time">NFL Live Time</option>
                        <option value="nfl.live.team">NFL Live Team</option>
                        <option value="mlb.live.score">MLB Live Score</option>
                        <option value="nhl.live.score">NHL Live Score</option>
                        <option value="nba.live.score">NBA Live Score</option>
                    </optgroup>
                    <optgroup label="Clock">
                        <option value="clock.time">Clock Time</option>
                        <option value="clock.date">Clock Date</option>
                    </optgroup>
                    <optgroup label="Weather">
                        <option value="weather.current">Weather Current</option>
                        <option value="weather.forecast">Weather Forecast</option>
                    </optgroup>
                </select>
            </div>

            <div>
                <label class="block text-sm font-medium text-gray-700 mb-1">Font Family</label>
                <select id="override-family" class="form-control text-sm">
                    <option value="">Use default</option>
                    <!-- Dynamically populated from font catalog -->
                </select>
            </div>

            <div>
                <label class="block text-sm font-medium text-gray-700 mb-1">Font Size</label>
                <select id="override-size" class="form-control text-sm">
                    <option value="">Use default</option>
                    <option value="xs">Extra Small (6px)</option>
                    <option value="sm">Small (8px)</option>
                    <option value="md">Medium (10px)</option>
                    <option value="lg">Large (12px)</option>
                    <option value="xl">Extra Large (14px)</option>
                </select>
            </div>

            <div class="flex items-end">
                <button id="add-override-btn" class="btn bg-blue-600 hover:bg-blue-700 text-white px-4 py-2">
                    <i class="fas fa-plus mr-2"></i>Add Override
                </button>
            </div>
        </div>

        <!-- Current Overrides List -->
        <div id="overrides-container">
            <h4 class="text-sm font-medium text-gray-900 mb-3">Current Overrides</h4>
            <div id="overrides-list" class="space-y-2">
                <!-- Overrides will be populated here -->
                <div class="text-gray-500 text-sm italic">No font overrides configured</div>
            </div>
        </div>
    </div>

    <!-- Font Preview -->
    <div class="bg-gray-50 rounded-lg p-4">
        <h3 class="text-md font-medium text-gray-900 mb-4">Font Preview</h3>
        <div class="grid grid-cols-1 md:grid-cols-2 xl:grid-cols-2 2xl:grid-cols-2 gap-6">
            <div>
                <div id="font-preview-container" class="border border-gray-300 bg-black rounded p-4 min-h-[100px] flex items-center justify-center">
                    <img id="font-preview-image" src="" alt="Font preview" class="max-w-full" style="display: none;">
                    <span id="font-preview-loading" class="text-gray-400">Select a font to preview</span>
                </div>
            </div>
            <div class="space-y-3">
                <div>
                    <label class="block text-sm font-medium text-gray-700 mb-1">Preview Text</label>
                    <input type="text" id="preview-text" value="Sample Text 123" class="form-control text-sm">
                </div>
                <div class="grid grid-cols-2 gap-3">
                    <div>
                        <label class="block text-sm font-medium text-gray-700 mb-1">Font Family</label>
                        <select id="preview-family" class="form-control text-sm">
                            <!-- Dynamically populated from font catalog -->
                        </select>
                    </div>
                    <div>
                        <label class="block text-sm font-medium text-gray-700 mb-1">Font Size</label>
                        <select id="preview-size" class="form-control text-sm">
                            <option value="xs">XS (6px)</option>
                            <option value="sm">SM (8px)</option>
                            <option value="md">MD (10px)</option>
                            <option value="lg">LG (12px)</option>
                            <option value="xl">XL (14px)</option>
                        </select>
                    </div>
                </div>
                <button id="update-preview-btn" class="btn bg-gray-600 hover:bg-gray-700 text-white px-4 py-2">
                    <i class="fas fa-eye mr-2"></i>Update Preview
                </button>
            </div>
        </div>
    </div>
</div>

<script>
// Prevent script from running multiple times when HTMX reloads content
(function() {
    // If script has already loaded, just re-initialize the tab without redeclaring variables/functions
    if (typeof window._fontsScriptLoaded !== 'undefined') {
        // Script already loaded, just trigger initialization
        setTimeout(function() {
            if (typeof window.initializeFontsTab === 'function') {
                window.initializeFontsTab();
            }
        }, 50);
        return;
    }
    
    // Mark script as loaded
    window._fontsScriptLoaded = true;
    
    // Initialize global variables on window object
    window.fontCatalog = window.fontCatalog || {};
    window.fontTokens = window.fontTokens || {};
    window.fontOverrides = window.fontOverrides || {};
    window.selectedFontFiles = window.selectedFontFiles || [];

    // Create references that can be reassigned
    var fontCatalog = window.fontCatalog;
    var fontTokens = window.fontTokens;
    var fontOverrides = window.fontOverrides;
    var selectedFontFiles = window.selectedFontFiles;

    // Base URL for API calls (shared scope)
    var baseUrl = window.location.origin;

    // Retry counter for initialization
    var initRetryCount = 0;
    var MAX_INIT_RETRIES = 50; // 5 seconds max (50 * 100ms)

function initializeFontsTab() {
    // Allow re-initialization on each HTMX content swap
    // The window._fontsScriptLoaded guard prevents function redeclaration
    const detectedEl = document.getElementById('detected-fonts');
    const availableEl = document.getElementById('available-fonts');

    if (!detectedEl || !availableEl) {
        initRetryCount++;
        if (initRetryCount >= MAX_INIT_RETRIES) {
            console.error('Fonts tab elements not found after max retries, giving up');
            return;
        }
        console.log('Fonts tab elements not found, retrying...', {
            detectedFonts: !!detectedEl,
            availableFonts: !!availableEl,
            attempt: initRetryCount
        });
        setTimeout(initializeFontsTab, 100);
        return;
    }

    // Reset retry counter on successful init
    initRetryCount = 0;
    
    // showNotification is provided by the notification widget (notification.js)
    // Fallback only if widget hasn't loaded yet
    if (typeof window.showNotification !== 'function') {
        window.showNotification = function(message, type = 'info') {
            console.log(`[${type.toUpperCase()}]`, message);
        };
    }

    console.log('Initializing font management...');
    initializeFontManagement();

    // Event listeners (use event delegation or ensure elements exist)
    const uploadDropzone = document.getElementById('upload-dropzone');
    const fontFileInput = document.getElementById('font-file-input');
    const uploadFontsBtn = document.getElementById('upload-fonts-btn');
    const cancelUploadBtn = document.getElementById('cancel-upload-btn');
    const addOverrideBtn = document.getElementById('add-override-btn');
    const updatePreviewBtn = document.getElementById('update-preview-btn');
    
    if (uploadDropzone && fontFileInput) {
        uploadDropzone.addEventListener('click', () => {
            fontFileInput.click();
        });
    }
    
    if (fontFileInput) {
        fontFileInput.addEventListener('change', handleFileSelection);
    }
    
    if (uploadFontsBtn) {
        uploadFontsBtn.addEventListener('click', uploadSelectedFonts);
    }
    
    if (cancelUploadBtn) {
        cancelUploadBtn.addEventListener('click', cancelFontUpload);
    }
    
    if (addOverrideBtn) {
        addOverrideBtn.addEventListener('click', addFontOverride);
    }
    
    if (updatePreviewBtn) {
        updatePreviewBtn.addEventListener('click', updateFontPreview);
    }

    // Drag and drop for upload area
    if (uploadDropzone) {
        uploadDropzone.addEventListener('dragover', (e) => {
            e.preventDefault();
            uploadDropzone.classList.add('drag-over');
        });

        uploadDropzone.addEventListener('dragleave', () => {
            uploadDropzone.classList.remove('drag-over');
        });

        uploadDropzone.addEventListener('drop', (e) => {
            e.preventDefault();
            uploadDropzone.classList.remove('drag-over');
            handleFileSelection({ target: { files: e.dataTransfer.files } });
        });
    }

    console.log('Fonts tab initialized successfully');
}

// Expose initializeFontsTab to window for re-initialization after HTMX reload
window.initializeFontsTab = initializeFontsTab;

// Initialize after HTMX content swap for dynamic loading
// Note: We don't use DOMContentLoaded here because this partial is loaded via HTMX
// after the main page's DOMContentLoaded has already fired
(function() {
    // Function to initialize when fonts content is loaded
    function tryInitializeFontsTab() {
        const fontsContent = document.getElementById('fonts-content');
        const detectedFonts = document.getElementById('detected-fonts');
        
        if (fontsContent && detectedFonts) {
            console.log('Fonts content detected, initializing...');
            setTimeout(() => {
                initializeFontsTab();
            }, 50);
        }
    }
    
    // Set up HTMX event listener for when content is swapped
    if (typeof document.body !== 'undefined') {
        document.body.addEventListener('htmx:afterSettle', function(event) {
            // Check if the event target is the fonts-content container or contains it
            const target = event.target;
            if (target && (target.id === 'fonts-content' || target.querySelector && target.querySelector('#fonts-content'))) {
                console.log('HTMX loaded fonts content, initializing...', target.id);
                tryInitializeFontsTab();
            }
        });
    }
    
    // Also check if content is already loaded (e.g., if script runs after HTMX swap)
    // This handles the case where the script executes after HTMX has already swapped
    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', tryInitializeFontsTab);
    } else {
        // DOM already loaded, check immediately
        tryInitializeFontsTab();
    }
})();

async function initializeFontManagement() {
    try {
        await loadFontData();
        populateFontSelects();
        displayCurrentOverrides();
        updateFontPreview();
        initializeFontUpload();
    } catch (error) {
        console.error('Error initializing font management:', error);
        showNotification('Error loading font configuration', 'error');
    }
}

async function loadFontData() {
    const detectedContainer = document.getElementById('detected-fonts');
    const availableContainer = document.getElementById('available-fonts');

    // Ensure containers exist before proceeding
    if (!detectedContainer || !availableContainer) {
        console.error('Font containers not found, cannot load font data');
        return;
    }

    // Show loading states
    detectedContainer.innerHTML = '<div class="text-blue-400">Loading font data...</div>';
    availableContainer.innerHTML = '<div class="text-blue-400">Loading font data...</div>';

    try {
        // Use absolute URLs to ensure they work when loaded via HTMX
        const [catalogRes, tokensRes, overridesRes] = await Promise.all([
            fetch(`${baseUrl}/api/v3/fonts/catalog`),
            fetch(`${baseUrl}/api/v3/fonts/tokens`),
            fetch(`${baseUrl}/api/v3/fonts/overrides`)
        ]);

        // Check if all responses are successful
        if (!catalogRes.ok || !tokensRes.ok || !overridesRes.ok) {
            const statusText = `HTTP ${catalogRes.status}/${tokensRes.status}/${overridesRes.status}`;
            console.error('Font API error:', statusText);
            throw new Error(`Failed to load font data: ${statusText}`);
        }

        const catalogData = await catalogRes.json();
        const tokensData = await tokensRes.json();
        const overridesData = await overridesRes.json();

        // Validate response structure
        if (!catalogData || !catalogData.data || !tokensData || !tokensData.data || !overridesData || !overridesData.data) {
            console.error('Invalid font API response structure:', {
                catalog: !!catalogData?.data,
                tokens: !!tokensData?.data,
                overrides: !!overridesData?.data
            });
            throw new Error('Invalid response format from font API');
        }

        // Update both window properties and local references
        window.fontCatalog = catalogData.data.catalog || {};
        window.fontTokens = tokensData.data.tokens || {};
        window.fontOverrides = overridesData.data.overrides || {};
        
        // Update local variable references
        fontCatalog = window.fontCatalog;
        fontTokens = window.fontTokens;
        fontOverrides = window.fontOverrides;

        // Update displays
        updateDetectedFontsDisplay();
        updateAvailableFontsDisplay();
        
        console.log('Font data loaded successfully', {
            catalogSize: Object.keys(fontCatalog).length,
            tokensSize: Object.keys(fontTokens).length,
            overridesSize: Object.keys(fontOverrides).length
        });
    } catch (error) {
        console.error('Error loading font data:', error);

        // Show error states
        detectedContainer.innerHTML = '<div class="text-red-400">Error loading font data. Please refresh the page.</div>';
        availableContainer.innerHTML = '<div class="text-red-400">Error loading font data. Please refresh the page.</div>';

        // Only show notification if showNotification is available
        if (typeof showNotification === 'function') {
            showNotification('Error loading font configuration', 'error');
        } else if (typeof window.showNotification === 'function') {
            window.showNotification('Error loading font configuration', 'error');
        } else {
            console.error('Error loading font configuration:', error.message);
        }
    }
}

function updateDetectedFontsDisplay() {
    const container = document.getElementById('detected-fonts');
    if (!container) return;

    // In a real implementation, this would collect font usage from all active managers
    // For now, we'll simulate this by analyzing the font overrides and catalog
    const detectedFonts = {};

    // Check font overrides for active elements
    for (const [elementKey, override] of Object.entries(fontOverrides)) {
        if (override.family) {
            detectedFonts[elementKey] = {
                family: override.family,
                size_px: override.size_px || 8,
                usage_count: 1, // Would be actual usage count in real implementation
                source: 'override'
            };
        }
    }

    // Check font catalog for commonly used fonts
    for (const [fontKey, fontPath] of Object.entries(fontCatalog)) {
        // Add some commonly used system fonts if not already in overrides
        if (!detectedFonts[fontKey]) {
            detectedFonts[fontKey] = {
                family: fontKey,
                size_px: 8,
                usage_count: 1,
                source: 'system'
            };
        }
    }

    if (Object.keys(detectedFonts).length === 0) {
        container.innerHTML = '<div class="text-gray-400">No fonts detected yet (managers will register fonts when they render)</div>';
        return;
    }

    const lines = [];
    for (const [elementKey, fontInfo] of Object.entries(detectedFonts)) {
        const sourceStr = fontInfo.source === 'override' ? ' [OVERRIDE]' : ' [SYSTEM]';
        lines.push(`${elementKey}: ${fontInfo.family}@${fontInfo.size_px}px (used ${fontInfo.usage_count}x)${sourceStr}`);
    }
    container.textContent = lines.join('\n');
}

function updateAvailableFontsDisplay() {
    const container = document.getElementById('available-fonts');
    if (!container) return;

    if (Object.keys(fontCatalog).length === 0) {
        container.innerHTML = '<div class="text-gray-400">No fonts available</div>';
        return;
    }

    const fontEntries = Object.entries(fontCatalog).map(([name, fontInfo]) => {
        const fontPath = typeof fontInfo === 'string' ? fontInfo : (fontInfo?.path || '');
        const filename = typeof fontInfo === 'object' ? (fontInfo.filename || name) : name;
        const displayName = typeof fontInfo === 'object' ? (fontInfo.display_name || name) : name;
        const fontType = typeof fontInfo === 'object' ? (fontInfo.type || '').toUpperCase() : '';
        // Use is_system flag from API (single source of truth)
        const isSystem = typeof fontInfo === 'object' ? (fontInfo.is_system === true) : false;
        return { name, filename, displayName, fontType, fontPath, isSystem };
    }).sort((a, b) => a.displayName.localeCompare(b.displayName));

    // Build list using DOM APIs to prevent XSS
    container.innerHTML = '';
    fontEntries.forEach(font => {
        const row = document.createElement('div');
        row.className = 'flex items-center justify-between py-1 border-b border-gray-700 last:border-0';

        const nameSpan = document.createElement('span');
        nameSpan.className = 'truncate flex-1';
        nameSpan.textContent = font.displayName;

        if (font.fontType) {
            const typeSpan = document.createElement('span');
            typeSpan.className = 'text-gray-500 ml-1';
            typeSpan.textContent = `(${font.fontType})`;
            nameSpan.appendChild(typeSpan);
        }

        row.appendChild(nameSpan);

        if (font.isSystem) {
            const systemBadge = document.createElement('span');
            systemBadge.className = 'text-gray-600 text-xs ml-2';
            systemBadge.textContent = '[system]';
            row.appendChild(systemBadge);
        } else {
            const deleteBtn = document.createElement('button');
            deleteBtn.className = 'text-red-400 hover:text-red-300 text-xs ml-2';
            deleteBtn.title = 'Delete font';
            deleteBtn.textContent = '[delete]';
            deleteBtn.dataset.fontName = font.name;
            deleteBtn.addEventListener('click', function() {
                deleteFont(this.dataset.fontName);
            });
            row.appendChild(deleteBtn);
        }

        container.appendChild(row);
    });
}

async function deleteFont(fontFamily) {
    if (!confirm(`Are you sure you want to delete the font "${fontFamily}"? This action cannot be undone.`)) {
        return;
    }

    try {
        const response = await fetch(`${baseUrl}/api/v3/fonts/${encodeURIComponent(fontFamily)}`, {
            method: 'DELETE'
        });

        if (!response.ok) {
            const text = await response.text();
            let message;
            try {
                const errorData = JSON.parse(text);
                message = errorData.message || `Server error: ${response.status}`;
            } catch {
                message = `Server error: ${response.status}`;
            }
            showNotification(message, 'error');
            return;
        }

        const data = await response.json();

        if (data.status === 'success') {
            showNotification(data.message || `Font "${fontFamily}" deleted successfully`, 'success');
            // Refresh font data and UI
            await loadFontData();
            populateFontSelects();
            // Clear font-selector widget cache if available
            if (typeof window.clearFontSelectorCache === 'function') {
                window.clearFontSelectorCache();
            }
        } else {
            showNotification(data.message || `Failed to delete font "${fontFamily}"`, 'error');
        }
    } catch (error) {
        console.error('Error deleting font:', error);
        showNotification(`Error deleting font: ${error.message}`, 'error');
    }
}

function populateFontSelects() {
    // Populate font family dropdowns from catalog
    const overrideSelect = document.getElementById('override-family');
    const previewSelect = document.getElementById('preview-family');

    if (!overrideSelect || !previewSelect) return;

    // Get font entries sorted by display name
    const fontEntries = Object.entries(fontCatalog).map(([key, info]) => {
        const filename = typeof info === 'object' ? (info.filename || key) : key;
        const displayName = typeof info === 'object' ? (info.display_name || key) : key;
        const fontType = typeof info === 'object' ? (info.type || 'unknown').toUpperCase() : '';
        return { key, filename, displayName, fontType };
    }).sort((a, b) => a.displayName.localeCompare(b.displayName));

    // Build options using DOM APIs to prevent XSS
    // Clear and add default option for override select
    overrideSelect.innerHTML = '';
    const defaultOption = document.createElement('option');
    defaultOption.value = '';
    defaultOption.textContent = 'Use default';
    overrideSelect.appendChild(defaultOption);

    // Clear preview select
    previewSelect.innerHTML = '';

    // Add font options to both selects
    fontEntries.forEach(font => {
        const typeLabel = font.fontType ? ` (${font.fontType})` : '';

        const overrideOpt = document.createElement('option');
        overrideOpt.value = font.filename;
        overrideOpt.textContent = font.displayName + typeLabel;
        overrideSelect.appendChild(overrideOpt);

        const previewOpt = document.createElement('option');
        previewOpt.value = font.filename;
        previewOpt.textContent = font.displayName + typeLabel;
        previewSelect.appendChild(previewOpt);
    });

    // Select first font in preview if available
    if (fontEntries.length > 0) {
        previewSelect.value = fontEntries[0].filename;
    }

    console.log(`Populated font selects with ${fontEntries.length} fonts`);
}

async function addFontOverride() {
    const element = document.getElementById('override-element').value;
    const family = document.getElementById('override-family').value;
    const sizeToken = document.getElementById('override-size').value;

    if (!element) {
        showNotification('Please select an element', 'warning');
        return;
    }

    if (!family && !sizeToken) {
        showNotification('Please specify at least a font family or size', 'warning');
        return;
    }

    try {
        const overrideData = {};
        if (family) overrideData.family = family;
        if (sizeToken) {
            const sizePx = fontTokens[sizeToken];
            if (sizePx) overrideData.size_px = sizePx;
        }

        const response = await fetch(`${baseUrl}/api/v3/fonts/overrides`, {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({
                [element]: overrideData
            })
        });

        if (!response.ok) {
            const text = await response.text();
            let message;
            try {
                const errorData = JSON.parse(text);
                message = errorData.message || `Server error: ${response.status}`;
            } catch {
                message = `Server error: ${response.status}`;
            }
            showNotification('Error adding font override: ' + message, 'error');
            return;
        }

        const data = await response.json();
        if (data.status === 'success') {
            showNotification('Font override added successfully', 'success');
            await loadFontData();
            displayCurrentOverrides();
            // Clear form
            document.getElementById('override-element').value = '';
            document.getElementById('override-family').value = '';
            document.getElementById('override-size').value = '';
        } else {
            showNotification('Error adding font override: ' + data.message, 'error');
        }
    } catch (error) {
        console.error('Error adding font override:', error);
        showNotification('Error adding font override: ' + error, 'error');
    }
}

async function deleteFontOverride(elementKey) {
    if (!confirm(`Are you sure you want to remove the font override for "${elementKey}"?`)) {
        return;
    }

    try {
        const response = await fetch(`${baseUrl}/api/v3/fonts/overrides/${elementKey}`, {
            method: 'DELETE'
        });

        if (!response.ok) {
            const text = await response.text();
            let message;
            try {
                const errorData = JSON.parse(text);
                message = errorData.message || `Server error: ${response.status}`;
            } catch {
                message = `Server error: ${response.status}`;
            }
            showNotification('Error removing font override: ' + message, 'error');
            return;
        }

        const data = await response.json();
        if (data.status === 'success') {
            showNotification('Font override removed successfully', 'success');
            await loadFontData();
            displayCurrentOverrides();
        } else {
            showNotification('Error removing font override: ' + data.message, 'error');
        }
    } catch (error) {
        console.error('Error deleting font override:', error);
        showNotification('Error removing font override: ' + error, 'error');
    }
}

function displayCurrentOverrides() {
    const container = document.getElementById('overrides-list');
    if (!container) return;

    if (Object.keys(fontOverrides).length === 0) {
        container.innerHTML = '<div class="text-gray-500 text-sm italic">No font overrides configured</div>';
        return;
    }

    // Build list using DOM APIs to prevent XSS
    container.innerHTML = '';
    Object.entries(fontOverrides).forEach(([elementKey, override]) => {
        const elementName = getElementDisplayName(elementKey);
        const settings = [];

        if (override.family) {
            const familyName = getFontDisplayName(override.family);
            settings.push(`Family: ${familyName}`);
        }

        if (override.size_px) {
            settings.push(`Size: ${override.size_px}px`);
        }

        const row = document.createElement('div');
        row.className = 'flex items-center justify-between p-3 bg-white rounded border';

        const infoDiv = document.createElement('div');

        const nameDiv = document.createElement('div');
        nameDiv.className = 'font-medium text-gray-900';
        nameDiv.textContent = elementName;

        const settingsDiv = document.createElement('div');
        settingsDiv.className = 'text-sm text-gray-600';
        settingsDiv.textContent = settings.join(', ');

        infoDiv.appendChild(nameDiv);
        infoDiv.appendChild(settingsDiv);

        const deleteBtn = document.createElement('button');
        deleteBtn.className = 'btn bg-red-600 hover:bg-red-700 text-white px-3 py-1 text-sm';
        const trashIcon = document.createElement('i');
        trashIcon.className = 'fas fa-trash mr-1';
        deleteBtn.appendChild(trashIcon);
        deleteBtn.appendChild(document.createTextNode('Remove'));
        deleteBtn.dataset.elementKey = elementKey;
        deleteBtn.addEventListener('click', function() {
            deleteFontOverride(this.dataset.elementKey);
        });

        row.appendChild(infoDiv);
        row.appendChild(deleteBtn);
        container.appendChild(row);
    });
}

function getElementDisplayName(elementKey) {
    const names = {
        'nfl.live.score': 'NFL Live Score',
        'nfl.live.time': 'NFL Live Time',
        'nfl.live.team': 'NFL Live Team',
        'mlb.live.score': 'MLB Live Score',
        'nhl.live.score': 'NHL Live Score',
        'nba.live.score': 'NBA Live Score',
        'clock.time': 'Clock Time',
        'clock.date': 'Clock Date',
        'weather.current': 'Weather Current',
        'weather.forecast': 'Weather Forecast'
    };
    return names[elementKey] || elementKey;
}

function getFontDisplayName(fontKey) {
    const names = {
        'press_start': 'Press Start 2P',
        'four_by_six': '4x6 Font',
        'matrix_light_6': 'Matrix Light 6'
    };
    return names[fontKey] || fontKey;
}

async function updateFontPreview() {
    const previewImage = document.getElementById('font-preview-image');
    const loadingText = document.getElementById('font-preview-loading');
    const textInput = document.getElementById('preview-text');
    const familySelect = document.getElementById('preview-family');
    const sizeSelect = document.getElementById('preview-size');

    if (!previewImage || !loadingText) return;

    const text = textInput?.value || 'Sample Text 123';
    const family = familySelect?.value || '';
    const sizeToken = sizeSelect?.value || 'md';
    const sizePx = fontTokens[sizeToken] || 10;

    if (!family) {
        previewImage.style.display = 'none';
        loadingText.style.display = 'block';
        loadingText.textContent = 'Select a font to preview';
        return;
    }

    // Show loading state
    loadingText.textContent = 'Loading preview...';
    loadingText.style.display = 'block';
    previewImage.style.display = 'none';

    try {
        const params = new URLSearchParams({
            font: family,
            text: text,
            size: sizePx,
            bg: '000000',
            fg: 'ffffff'
        });

        const response = await fetch(`${baseUrl}/api/v3/fonts/preview?${params}`);

        if (!response.ok) {
            const text = await response.text();
            let message;
            try {
                const errorData = JSON.parse(text);
                message = errorData.message || `Server error: ${response.status}`;
            } catch {
                message = `Server error: ${response.status}`;
            }
            loadingText.textContent = message;
            loadingText.style.display = 'block';
            previewImage.style.display = 'none';
            return;
        }

        const data = await response.json();

        if (data.status === 'success' && data.data?.image) {
            previewImage.src = data.data.image;
            previewImage.style.display = 'block';
            loadingText.style.display = 'none';
        } else {
            loadingText.textContent = data.message || 'Failed to load preview';
            loadingText.style.display = 'block';
            previewImage.style.display = 'none';
        }
    } catch (error) {
        console.error('Error loading font preview:', error);
        loadingText.textContent = 'Error loading preview';
        loadingText.style.display = 'block';
        previewImage.style.display = 'none';
    }
}

function initializeFontUpload() {
    // Setup already done in event listeners
}

function handleFileSelection(event) {
    const files = Array.from(event.target.files);
    const validExtensions = ['ttf', 'otf', 'bdf'];
    const validFiles = files.filter(file => {
        const extension = file.name.toLowerCase().split('.').pop();
        return validExtensions.includes(extension);
    });

    if (validFiles.length === 0) {
        showNotification('Please select valid .ttf, .otf, or .bdf font files', 'warning');
        return;
    }

    if (validFiles.length !== files.length) {
        showNotification(`${files.length - validFiles.length} invalid files were ignored`, 'warning');
    }

    selectedFontFiles = validFiles;
    showUploadForm();
}

function showUploadForm() {
    if (selectedFontFiles.length === 0) return;

    const uploadForm = document.getElementById('upload-form');
    const selectedFilesContainer = document.getElementById('selected-files');
    const fontFamilyInput = document.getElementById('upload-font-family');

    // Show selected files using DOM APIs to prevent XSS
    selectedFilesContainer.innerHTML = '';
    selectedFontFiles.forEach(file => {
        const row = document.createElement('div');
        row.className = 'flex items-center justify-between p-2 bg-gray-100 rounded';

        const span = document.createElement('span');
        span.className = 'text-sm';
        span.textContent = `${file.name} (${(file.size / 1024).toFixed(1)} KB)`;

        row.appendChild(span);
        selectedFilesContainer.appendChild(row);
    });

    // Auto-generate font family name from first file
    if (selectedFontFiles.length === 1) {
        const filename = selectedFontFiles[0].name;
        const nameWithoutExt = filename.substring(0, filename.lastIndexOf('.'));
        // Preserve hyphens, convert other special chars to underscores
        fontFamilyInput.value = nameWithoutExt.toLowerCase().replace(/[^a-z0-9-]/g, '_');
    }

    uploadForm.style.display = 'block';
    uploadForm.scrollIntoView({ behavior: 'smooth' });
}

function cancelFontUpload() {
    selectedFontFiles = [];
    document.getElementById('upload-form').style.display = 'none';
    document.getElementById('font-file-input').value = '';
}

async function uploadSelectedFonts() {
    if (selectedFontFiles.length === 0) {
        showNotification('No files selected', 'warning');
        return;
    }

    const fontFamilyInput = document.getElementById('upload-font-family');
    const fontFamily = fontFamilyInput.value.trim();

    if (!fontFamily) {
        showNotification('Please enter a font family name', 'warning');
        return;
    }

    // Validate font family name (must match backend validation)
    if (!/^[a-z0-9_-]+$/i.test(fontFamily)) {
        showNotification('Font family name can only contain letters, numbers, underscores, and hyphens', 'warning');
        return;
    }

    try {
        showNotification('Uploading fonts...', 'info');
        showUploadProgress();

        for (let i = 0; i < selectedFontFiles.length; i++) {
            const file = selectedFontFiles[i];
            const formData = new FormData();
            formData.append('font_file', file);
            formData.append('font_family', i === 0 ? fontFamily : `${fontFamily}_${i + 1}`);

            const response = await fetch(`${baseUrl}/api/v3/fonts/upload`, {
                method: 'POST',
                body: formData
            });

            if (!response.ok) {
                const text = await response.text();
                let message;
                try {
                    const errorData = JSON.parse(text);
                    message = errorData.message || `Server error: ${response.status}`;
                } catch {
                    message = `Server error: ${response.status}`;
                }
                showNotification(`Error uploading "${file.name}": ${message}`, 'error');
                continue;
            }

            const data = await response.json();

            if (data.status === 'success') {
                showNotification(`Font "${data.font_family}" uploaded successfully`, 'success');
            } else {
                showNotification(`Error uploading "${file.name}": ${data.message}`, 'error');
            }

            // Update progress
            const percent = ((i + 1) / selectedFontFiles.length) * 100;
            updateUploadProgress(percent);
        }

        // Refresh font data and UI
        await loadFontData();
        populateFontSelects();
        cancelFontUpload();
        hideUploadProgress();
        // Clear font-selector widget cache so new fonts appear in plugin configs
        if (typeof window.clearFontSelectorCache === 'function') {
            window.clearFontSelectorCache();
        }

    } catch (error) {
        console.error('Error uploading fonts:', error);
        showNotification('Error uploading fonts: ' + error, 'error');
        hideUploadProgress();
    }
}

function showUploadProgress() {
    document.getElementById('upload-progress').classList.remove('hidden');
}

function hideUploadProgress() {
    document.getElementById('upload-progress').classList.add('hidden');
}

function updateUploadProgress(percent) {
    document.getElementById('upload-percent').textContent = Math.round(percent) + '%';
    document.getElementById('upload-progress-bar').style.width = percent + '%';
}

})(); // End of script load guard - prevents redeclaration on HTMX reload
</script>

<style>
.drag-over {
    border-color: #3b82f6 !important;
    background-color: #eff6ff !important;
    transform: scale(1.02);
}

.font-upload-area {
    margin: 15px 0;
}

.upload-dropzone {
    border: 3px dashed #d1d5db;
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    background: #fafafa;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-dropzone:hover {
    border-color: #3b82f6;
    background: #f0f8ff;
}

.upload-dropzone i {
    font-size: 3rem;
    color: #3b82f6;
    margin-bottom: 15px;
    display: block;
}

.upload-dropzone p {
    margin: 5px 0;
    font-size: 1.1rem;
    color: #374151;
}

.upload-hint {
    font-size: 0.9rem !important;
    color: #6b7280 !important;
    font-style: italic;
}

.upload-form {
    margin-top: 20px;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 8px;
    border: 1px solid #d1d5db;
}

#font-preview-container {
    max-width: 100%;
    min-height: 100px;
}

#font-preview-image {
    max-width: 100%;
    height: auto;
}
</style>