feat: ledlab

public/scripts/theme-manager.js

@@ -0,0 +1,120 @@
+// Theme Manager - Handles theme switching and persistence
+
+class ThemeManager {
+    constructor() {
+        this.currentTheme = this.getStoredTheme() || 'dark';
+        this.themeToggle = document.getElementById('theme-toggle');
+        this.init();
+    }
+
+    init() {
+        // Apply stored theme on page load
+        this.applyTheme(this.currentTheme);
+
+        // Set up event listener for theme toggle
+        if (this.themeToggle) {
+            this.themeToggle.addEventListener('click', () => this.toggleTheme());
+        }
+
+        // Listen for system theme changes
+        if (window.matchMedia) {
+            const mediaQuery = window.matchMedia('(prefers-color-scheme: dark)');
+            mediaQuery.addListener((e) => {
+                if (this.getStoredTheme() === 'system') {
+                    this.applyTheme(e.matches ? 'dark' : 'light');
+                }
+            });
+        }
+    }
+
+    getStoredTheme() {
+        try {
+            return localStorage.getItem('spore-ledlab-theme');
+        } catch (e) {
+            console.warn('Could not access localStorage for theme preference');
+            return 'dark';
+        }
+    }
+
+    setStoredTheme(theme) {
+        try {
+            localStorage.setItem('spore-ledlab-theme', theme);
+        } catch (e) {
+            console.warn('Could not save theme preference to localStorage');
+        }
+    }
+
+    applyTheme(theme) {
+        // Update data attribute on html element
+        document.documentElement.setAttribute('data-theme', theme);
+
+        // Update theme toggle icon
+        this.updateThemeIcon(theme);
+
+        // Store the theme preference
+        this.setStoredTheme(theme);
+
+        this.currentTheme = theme;
+
+        // Dispatch custom event for other components
+        window.dispatchEvent(new CustomEvent('themeChanged', {
+            detail: { theme: theme }
+        }));
+    }
+
+    updateThemeIcon(theme) {
+        if (!this.themeToggle) return;
+
+        const svg = this.themeToggle.querySelector('svg');
+        if (!svg) return;
+
+        // Update the SVG content based on theme
+        if (theme === 'light') {
+            // Sun icon for light theme
+            svg.innerHTML = `
+                <circle cx="12" cy="12" r="5"/>
+                <path d="M12 1v2M12 21v2M4.22 4.22l1.42 1.42M18.36 18.36l1.42 1.42M1 12h2M21 12h2M4.22 19.78l1.42-1.42M18.36 5.64l1.42-1.42"/>
+            `;
+        } else {
+            // Moon icon for dark theme
+            svg.innerHTML = `
+                <path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z"/>
+            `;
+        }
+    }
+
+    toggleTheme() {
+        const newTheme = this.currentTheme === 'dark' ? 'light' : 'dark';
+        this.applyTheme(newTheme);
+
+        // Add a subtle animation to the toggle button
+        if (this.themeToggle) {
+            this.themeToggle.style.transform = 'scale(0.9)';
+            setTimeout(() => {
+                this.themeToggle.style.transform = 'scale(1)';
+            }, 150);
+        }
+    }
+
+    // Method to get current theme (useful for other components)
+    getCurrentTheme() {
+        return this.currentTheme;
+    }
+
+    // Method to set theme programmatically
+    setTheme(theme) {
+        if (['dark', 'light'].includes(theme)) {
+            this.applyTheme(theme);
+        }
+    }
+}
+
+// Initialize theme manager when DOM is loaded
+document.addEventListener('DOMContentLoaded', function() {
+    window.themeManager = new ThemeManager();
+});
+
+// Export for use in other modules
+if (typeof module !== 'undefined' && module.exports) {
+    module.exports = ThemeManager;
+}