class EmbedDesigner {
    constructor() {
        this.params = this.parseURLParams();
        this.config = this.getInitialConfig();
        this.initDesignerMode();
    }
    
    parseURLParams() {
        const urlParams = new URLSearchParams(window.location.search);
        const params = {};
        for (const [key, value] of urlParams.entries()) {
            params[key] = decodeURIComponent(value);
        }
        return params;
    }
    
    getInitialConfig() {
        // Check if we have URL parameters
        const hasUrlParams = Object.keys(this.params).length > 0;
        
        // If URL params exist, prioritize them over saved config
        if (hasUrlParams) {
            // Start with defaults, then apply saved config, then override with URL params
            const savedConfig = this.loadFromLocalStorage() || {};
            return {
                prompt: this.params.prompt || savedConfig.prompt || '',
                context: this.params.context ? this.params.context.split(',').map(c => c.trim()) : (savedConfig.context || []),
                model: this.params.model || savedConfig.model || 'gpt-4o',
                mode: this.params.agentMode || savedConfig.mode || 'chat',
                thinking: this.params.thinking === 'true' ? true : (this.params.thinking === 'false' ? false : (savedConfig.thinking || false)),
                max: this.params.max === 'true' ? true : (this.params.max === 'false' ? false : (savedConfig.max || false)),
                lightColor: this.params.lightColor || savedConfig.lightColor || '#3b82f6',
                darkColor: this.params.darkColor || savedConfig.darkColor || '#60a5fa',
                height: this.params.height || savedConfig.height || '400',
                themeMode: this.params.themeMode || savedConfig.themeMode || 'auto',
                filetree: this.params.filetree ? decodeURIComponent(this.params.filetree).split('\n').filter(f => f.trim()) : (savedConfig.filetree || []),
                showFiletree: savedConfig.showFiletree !== undefined ? savedConfig.showFiletree : true
            };
        }
        
        // Otherwise, try to load from localStorage
        const savedConfig = this.loadFromLocalStorage();
        if (savedConfig) {
            return savedConfig;
        }
        
        // Fall back to defaults
        return {
            prompt: '',
            context: [],
            model: 'gpt-4o',
            mode: 'chat',
            thinking: false,
            max: false,
            lightColor: '#3b82f6',
            darkColor: '#60a5fa',
            height: '400',
            themeMode: 'auto',
            filetree: [],
            showFiletree: true
        };
    }
    
    loadFromLocalStorage() {
        try {
            const saved = localStorage.getItem('embedDesignerConfig');
            if (saved) {
                const config = JSON.parse(saved);
                // Validate the loaded config has all required fields
                if (config && typeof config === 'object') {
                    // Ensure all properties have defaults
                    return {
                        prompt: config.prompt || '',
                        context: config.context || [],
                        model: config.model || 'gpt-4o',
                        mode: config.mode || 'chat',
                        thinking: config.thinking || false,
                        max: config.max || false,
                        lightColor: config.lightColor || '#3b82f6',
                        darkColor: config.darkColor || '#60a5fa',
                        height: config.height || '400',
                        themeMode: config.themeMode || 'auto',
                        filetree: config.filetree || [],
                        showFiletree: config.showFiletree !== undefined ? config.showFiletree : true
                    };
                }
            }
        } catch (e) {
            console.error('Error loading from localStorage:', e);
        }
        return null;
    }
    
    saveToLocalStorage() {
        try {
            localStorage.setItem('embedDesignerConfig', JSON.stringify(this.config));
            // Auto-save is silent - no notification
        } catch (e) {
            console.error('Error saving to localStorage:', e);
        }
    }
    
    clearLocalStorage() {
        try {
            localStorage.removeItem('embedDesignerConfig');
            this.showNotification('Settings cleared!');
        } catch (e) {
            console.error('Error clearing localStorage:', e);
        }
    }
    
    initDesignerMode() {
        this.setupDesignerElements();
        this.setupDesignerEvents();
        this.setupDesignerColors();
        this.updatePreview();
        this.updateIframeSnippet();
    }
    
    setupDesignerElements() {
        // Populate form with current config
        document.getElementById('designer-prompt').value = this.config.prompt;
        document.getElementById('designer-context').value = this.config.context.join(', ');
        document.getElementById('designer-filetree').value = this.config.filetree.join('\n');
        
        // Handle model selection
        const modelSelect = document.getElementById('designer-model');
        const customModelInput = document.getElementById('designer-custom-model');
        
        // Check if model is one of the predefined options
        const isPredefinedModel = Array.from(modelSelect.options).some(opt => opt.value === this.config.model);
        
        if (isPredefinedModel) {
            modelSelect.value = this.config.model;
            customModelInput.classList.add('hidden');
        } else {
            // It's a custom model
            modelSelect.value = 'custom';
            customModelInput.value = this.config.model;
            customModelInput.classList.remove('hidden');
        }
        
        document.getElementById('designer-mode-select').value = this.config.mode;
        document.getElementById('designer-thinking').checked = this.config.thinking;
        document.getElementById('designer-max').checked = this.config.max;
        
        // Set show filetree checkbox (default to true if not set)
        const showFiletreeCheckbox = document.getElementById('designer-show-filetree');
        if (showFiletreeCheckbox) {
            showFiletreeCheckbox.checked = this.config.showFiletree !== false;
        }
        
        // Set height slider
        const heightSlider = document.getElementById('designer-height');
        const heightValue = document.getElementById('height-value');
        if (heightSlider) {
            heightSlider.value = this.config.height;
            if (heightValue) {
                heightValue.textContent = this.config.height;
            }
        }
        
        // Set theme mode buttons
        this.updateThemeModeButtons();
        
        // Set color values
        const lightColorPicker = document.getElementById('designer-light-color');
        const lightColorText = document.getElementById('designer-light-color-text');
        const darkColorPicker = document.getElementById('designer-dark-color');
        const darkColorText = document.getElementById('designer-dark-color-text');
        
        if (lightColorPicker) {
            lightColorPicker.value = this.config.lightColor;
            lightColorText.value = this.config.lightColor;
        }
        if (darkColorPicker) {
            darkColorPicker.value = this.config.darkColor;
            darkColorText.value = this.config.darkColor;
        }
    }
    
    updateThemeModeButtons() {
        // Update theme mode button states
        document.querySelectorAll('.theme-mode-btn').forEach(btn => {
            btn.classList.remove('bg-dynamic-primary', 'text-white');
            btn.classList.add('bg-dynamic-background', 'text-dynamic-foreground');
        });
        
        const activeButton = document.getElementById(`theme-${this.config.themeMode}`);
        if (activeButton) {
            activeButton.classList.remove('bg-dynamic-background', 'text-dynamic-foreground');
            activeButton.classList.add('bg-dynamic-primary', 'text-white');
        }
    }
    
    setupDesignerEvents() {
        // Form changes update preview
        ['designer-prompt', 'designer-context', 'designer-mode-select', 'designer-thinking', 'designer-max', 'designer-filetree', 'designer-show-filetree'].forEach(id => {
            const element = document.getElementById(id);
            if (element) {
                element.addEventListener('input', () => this.updateConfigFromForm());
                element.addEventListener('change', () => this.updateConfigFromForm());
            }
        });
        
        // Theme mode buttons
        document.querySelectorAll('.theme-mode-btn').forEach(btn => {
            btn.addEventListener('click', (e) => {
                const mode = e.target.id.replace('theme-', '');
                this.config.themeMode = mode;
                this.updateThemeModeButtons();
                this.updatePreview();
                this.saveToLocalStorage();
            });
        });
        
        // Color preset buttons
        document.querySelectorAll('.color-preset').forEach(btn => {
            btn.addEventListener('click', (e) => {
                const lightColor = e.currentTarget.getAttribute('data-light');
                const darkColor = e.currentTarget.getAttribute('data-dark');
                
                // Update color pickers and text inputs
                const lightColorPicker = document.getElementById('designer-light-color');
                const lightColorText = document.getElementById('designer-light-color-text');
                const darkColorPicker = document.getElementById('designer-dark-color');
                const darkColorText = document.getElementById('designer-dark-color-text');
                
                if (lightColorPicker && lightColor) {
                    lightColorPicker.value = lightColor;
                    lightColorText.value = lightColor;
                }
                if (darkColorPicker && darkColor) {
                    darkColorPicker.value = darkColor;
                    darkColorText.value = darkColor;
                }
                
                this.updateConfigFromForm();
            });
        });
        
        // Model dropdown special handling
        const modelSelect = document.getElementById('designer-model');
        const customModelInput = document.getElementById('designer-custom-model');
        
        modelSelect.addEventListener('change', () => {
            if (modelSelect.value === 'custom') {
                customModelInput.classList.remove('hidden');
                customModelInput.focus();
            } else {
                customModelInput.classList.add('hidden');
            }
            this.updateConfigFromForm();
        });
        
        // Custom model input
        customModelInput.addEventListener('input', () => this.updateConfigFromForm());
        
        // Height slider
        const heightSlider = document.getElementById('designer-height');
        const heightValue = document.getElementById('height-value');
        if (heightSlider) {
            heightSlider.addEventListener('input', (e) => {
                if (heightValue) {
                    heightValue.textContent = e.target.value;
                }
                this.updateConfigFromForm();
            });
        }
        
        // Color pickers
        const lightColorPicker = document.getElementById('designer-light-color');
        const lightColorText = document.getElementById('designer-light-color-text');
        const darkColorPicker = document.getElementById('designer-dark-color');
        const darkColorText = document.getElementById('designer-dark-color-text');
        
        if (lightColorPicker) {
            lightColorPicker.addEventListener('input', (e) => {
                lightColorText.value = e.target.value;
                this.updateConfigFromForm();
            });
        }
        
        if (lightColorText) {
            lightColorText.addEventListener('input', (e) => {
                if (/^#[0-9A-Fa-f]{6}$/.test(e.target.value)) {
                    lightColorPicker.value = e.target.value;
                    this.updateConfigFromForm();
                }
            });
        }
        
        if (darkColorPicker) {
            darkColorPicker.addEventListener('input', (e) => {
                darkColorText.value = e.target.value;
                this.updateConfigFromForm();
            });
        }
        
        if (darkColorText) {
            darkColorText.addEventListener('input', (e) => {
                if (/^#[0-9A-Fa-f]{6}$/.test(e.target.value)) {
                    darkColorPicker.value = e.target.value;
                    this.updateConfigFromForm();
                }
            });
        }
        
        // Generate embed button
        document.getElementById('generate-embed').addEventListener('click', () => this.showEmbedModal());
        
        // Iframe snippet click to copy
        document.getElementById('iframe-snippet').addEventListener('click', () => this.copyIframeCode());
        
        // Reset settings button
        document.getElementById('reset-settings').addEventListener('click', () => {
            if (confirm('Are you sure you want to reset all settings to defaults?')) {
                this.clearLocalStorage();
                // Reset to default config
                this.config = {
                    prompt: '',
                    context: [],
                    model: 'gpt-4o',
                    mode: 'chat',
                    thinking: false,
                    max: false,
                    lightColor: '#3b82f6',
                    darkColor: '#60a5fa',
                    height: '400',
                    themeMode: 'auto',
                    filetree: [],
                    showFiletree: true
                };
                // Update UI to reflect defaults
                this.setupDesignerElements();
                this.updatePreview();
                this.updateIframeSnippet();
            }
        });
        
        // Example buttons
        document.getElementById('vibe-example').addEventListener('click', () => {
            this.loadVibeExample();
        });
        
        document.getElementById('chat-example').addEventListener('click', () => {
            this.loadChatExample();
        });
        
        // Modal events
        document.getElementById('close-modal').addEventListener('click', () => this.hideEmbedModal());
        document.getElementById('copy-embed-code').addEventListener('click', () => this.copyEmbedCode());
        document.getElementById('copy-share-url').addEventListener('click', () => this.copyShareURL());
        
        // Close modal on backdrop click
        document.getElementById('embed-modal').addEventListener('click', (e) => {
            if (e.target.id === 'embed-modal') this.hideEmbedModal();
        });
    }
    
    updateConfigFromForm() {
        const heightSlider = document.getElementById('designer-height');
        const modelSelect = document.getElementById('designer-model');
        const customModelInput = document.getElementById('designer-custom-model');
        const lightColorText = document.getElementById('designer-light-color-text');
        const darkColorText = document.getElementById('designer-dark-color-text');
        
        // Get model value
        let modelValue = modelSelect.value;
        if (modelValue === 'custom') {
            modelValue = customModelInput.value || 'Custom Model';
        }
        
        this.config = {
            prompt: document.getElementById('designer-prompt').value,
            context: document.getElementById('designer-context').value.split(',').map(c => c.trim()).filter(c => c),
            model: modelValue,
            mode: document.getElementById('designer-mode-select').value,
            thinking: document.getElementById('designer-thinking').checked,
            max: document.getElementById('designer-max').checked,
            lightColor: lightColorText ? lightColorText.value : '#3b82f6',
            darkColor: darkColorText ? darkColorText.value : '#60a5fa',
            height: heightSlider ? heightSlider.value : '400',
            themeMode: this.config.themeMode || 'auto',
            filetree: document.getElementById('designer-filetree').value.split('\n').map(f => f.trim()).filter(f => f),
            showFiletree: document.getElementById('designer-show-filetree').checked
        };
        
        this.updatePreview();
        this.saveToLocalStorage();
        this.updateIframeSnippet();
    }
    
    updateIframeSnippet() {
        const snippet = document.getElementById('iframe-snippet');
        if (!snippet) return;
        
        const code = this.generateEmbedCode();
        // Show a shortened version in the snippet
        const shortCode = code.replace(/\n/g, ' ').replace(/\s+/g, ' ');
        snippet.textContent = shortCode;
    }
    
    setupDesignerColors() {
        // Set up fixed designer colors - always use default blue theme in light mode
        const root = document.documentElement;
        
        // Always use default blue colors for designer
        root.style.setProperty('--primary', '59 130 246'); // Blue-500
        root.style.setProperty('--background', '255 255 255');
        root.style.setProperty('--foreground', '15 23 42');
        root.style.setProperty('--muted', '248 250 252');
        root.style.setProperty('--muted-foreground', '100 116 139');
        root.style.setProperty('--border', '226 232 240');
        root.style.setProperty('--accent', '16 185 129');
    }
    
    updateDesignerColors() {
        // Deprecated - no longer update designer colors
        // Designer maintains fixed color scheme
    }
    
    updatePreview() {
        const previewContainer = document.getElementById('preview-container');
        const previewWrapper = document.getElementById('preview-wrapper');
        if (!previewContainer) return;
        
        // Update preview wrapper height
        if (previewWrapper) {
            previewWrapper.style.height = `${this.config.height}px`;
        }
        
        // Generate preview URL with parameters
        const previewUrl = this.generatePreviewURL();
        
        // Update iframe src
        let iframe = previewContainer.querySelector('iframe');
        if (!iframe) {
            iframe = document.createElement('iframe');
            iframe.className = 'w-full h-full border-0 rounded-lg';
            previewContainer.innerHTML = '';
            previewContainer.appendChild(iframe);
        }
        
        iframe.src = previewUrl;
    }
    
    generatePreviewURL() {
        const params = new URLSearchParams();
        if (this.config.prompt) params.set('prompt', this.config.prompt);
        if (this.config.context.length > 0) params.set('context', this.config.context.join(','));
        if (this.config.model !== 'gpt-4o') params.set('model', this.config.model);
        if (this.config.mode !== 'chat') params.set('agentMode', this.config.mode);
        if (this.config.thinking) params.set('thinking', 'true');
        if (this.config.max) params.set('max', 'true');
        if (this.config.lightColor !== '#3b82f6') params.set('lightColor', this.config.lightColor);
        if (this.config.darkColor !== '#60a5fa') params.set('darkColor', this.config.darkColor);
        if (this.config.themeMode !== 'auto') params.set('themeMode', this.config.themeMode);
        if (this.config.showFiletree && this.config.filetree && this.config.filetree.length > 0) params.set('filetree', encodeURIComponent(this.config.filetree.join('\n')));
        params.set('preview', 'true');
        
        return `/embed-preview/?${params.toString()}`;
    }
    
    generateShareURL() {
        const params = new URLSearchParams();
        if (this.config.prompt) params.set('prompt', this.config.prompt);
        if (this.config.context.length > 0) params.set('context', this.config.context.join(','));
        if (this.config.model !== 'gpt-4o') params.set('model', this.config.model);
        if (this.config.mode !== 'chat') params.set('agentMode', this.config.mode);
        if (this.config.thinking) params.set('thinking', 'true');
        if (this.config.max) params.set('max', 'true');
        if (this.config.lightColor !== '#3b82f6') params.set('lightColor', this.config.lightColor);
        if (this.config.darkColor !== '#60a5fa') params.set('darkColor', this.config.darkColor);
        if (this.config.themeMode !== 'auto') params.set('themeMode', this.config.themeMode);
        if (this.config.showFiletree && this.config.filetree && this.config.filetree.length > 0) params.set('filetree', encodeURIComponent(this.config.filetree.join('\n')));
        
        return `${window.location.origin}/embed-preview/?${params.toString()}`;
    }
    
    generateEmbedCode() {
        const url = this.generateShareURL();
        return `<iframe 
  src="${url}"
  width="100%" 
  height="${this.config.height}"
  frameborder="0"
  style="border-radius: 12px; border: 1px solid #e5e7eb;">
</iframe>`;
    }
    
    showEmbedModal() {
        const modal = document.getElementById('embed-modal');
        const embedCode = document.getElementById('embed-code');
        const shareUrl = document.getElementById('share-url');
        
        embedCode.value = this.generateEmbedCode();
        shareUrl.value = this.generateShareURL();
        
        modal.classList.remove('hidden');
    }
    
    hideEmbedModal() {
        document.getElementById('embed-modal').classList.add('hidden');
    }
    
    async copyEmbedCode() {
        const embedCode = document.getElementById('embed-code').value;
        await this.copyToClipboard(embedCode);
        this.showNotification('Embed code copied to clipboard!');
    }
    
    async copyShareURL() {
        const shareUrl = this.generateShareURL();
        await this.copyToClipboard(shareUrl);
        this.showNotification('Share URL copied to clipboard!');
    }
    
    async copyIframeCode() {
        const embedCode = this.generateEmbedCode();
        await this.copyToClipboard(embedCode);
        this.showNotification('Iframe code copied to clipboard!');
    }
    
    async copyToClipboard(text) {
        if (navigator.clipboard && window.isSecureContext) {
            await navigator.clipboard.writeText(text);
        } else {
            // Fallback
            const textArea = document.createElement('textarea');
            textArea.value = text;
            textArea.style.position = 'fixed';
            textArea.style.left = '-999999px';
            textArea.style.top = '-999999px';
            document.body.appendChild(textArea);
            textArea.focus();
            textArea.select();
            document.execCommand('copy');
            textArea.remove();
        }
    }
    
    showNotification(message, duration = 2000) {
        const notification = document.getElementById('notification');
        if (!notification) return;
        
        notification.textContent = message;
        notification.classList.remove('opacity-0');
        notification.classList.add('opacity-100');
        
        setTimeout(() => {
            notification.classList.remove('opacity-100');
            notification.classList.add('opacity-0');
        }, duration);
    }
    
    loadVibeExample() {
        // Set vibe coding example values
        document.getElementById('designer-prompt').value = 
`I'm working on a React e-commerce app. The current ProductList component is getting messy with too much logic. 

Can you help me refactor it to:
1. Extract the filtering logic into a custom hook
2. Split the large component into smaller, reusable pieces
3. Add proper TypeScript types
4. Implement virtualization for better performance with large product lists

The component currently handles products display, filtering by category/price, sorting, and pagination all in one file. I want a cleaner architecture.`;
        
        document.getElementById('designer-context').value = '@codebase, ProductList.tsx, components/, hooks/';
        document.getElementById('designer-filetree').value = 
`src/
src/components/
src/components/ProductList.tsx*
src/components/ProductCard.tsx
src/components/ProductGrid.tsx
src/components/Filters/
src/components/Filters/CategoryFilter.tsx
src/components/Filters/PriceRangeFilter.tsx
src/components/Filters/index.tsx
src/hooks/
src/hooks/useProducts.ts
src/hooks/useFilters.ts
src/hooks/useInfiniteScroll.ts
src/types/
src/types/product.ts
src/api/
src/api/products.ts
src/utils/
src/utils/formatters.ts
package.json
tsconfig.json`;
        
        // Set vibe coding settings
        document.getElementById('designer-model').value = 'Claude 4 Opus';
        document.getElementById('designer-mode-select').value = 'agent';
        document.getElementById('designer-thinking').checked = true;
        document.getElementById('designer-max').checked = true;
        document.getElementById('designer-show-filetree').checked = true;
        
        // Set height and colors for coding example
        const heightSlider = document.getElementById('designer-height');
        const heightValue = document.getElementById('height-value');
        if (heightSlider) {
            heightSlider.value = '500';
            if (heightValue) {
                heightValue.textContent = '500';
            }
        }
        
        // Set developer-friendly color scheme (purple/violet)
        document.getElementById('designer-light-color').value = '#8b5cf6';
        document.getElementById('designer-light-color-text').value = '#8b5cf6';
        document.getElementById('designer-dark-color').value = '#a78bfa';
        document.getElementById('designer-dark-color-text').value = '#a78bfa';
        
        // Set dark theme mode for coding
        this.config.themeMode = 'dark';
        this.updateThemeModeButtons();
        
        // Update config from form
        this.updateConfigFromForm();
        
        this.showNotification('Vibe coding example loaded!');
    }
    
    loadChatExample() {
        // Set chat example values
        document.getElementById('designer-prompt').value = 
`I'm planning a dinner party for 8 people this weekend. One person is vegetarian, another is gluten-free, and I want to make something impressive but not too complicated. 

Can you suggest a menu with appetizers, main course, and dessert that would work for everyone? I have about 4 hours to prepare everything and a moderate cooking skill level.`;
        
        document.getElementById('designer-context').value = '#Screenshot Kitchen Layout.png, Recipes Collection.pdf';
        document.getElementById('designer-filetree').value = '';
        
        // Set chat settings
        document.getElementById('designer-model').value = 'GPT 4o';
        document.getElementById('designer-mode-select').value = 'chat';
        document.getElementById('designer-thinking').checked = false;
        document.getElementById('designer-max').checked = false;
        document.getElementById('designer-show-filetree').checked = false;
        
        // Set height and colors for chat example
        const heightSlider = document.getElementById('designer-height');
        const heightValue = document.getElementById('height-value');
        if (heightSlider) {
            heightSlider.value = '350';
            if (heightValue) {
                heightValue.textContent = '350';
            }
        }
        
        // Set friendly color scheme (green)
        document.getElementById('designer-light-color').value = '#10b981';
        document.getElementById('designer-light-color-text').value = '#10b981';
        document.getElementById('designer-dark-color').value = '#34d399';
        document.getElementById('designer-dark-color-text').value = '#34d399';
        
        // Set light theme mode for chat
        this.config.themeMode = 'light';
        this.updateThemeModeButtons();
        
        // Update config from form
        this.updateConfigFromForm();
        
        this.showNotification('Chat example loaded!');
    }
}

// Dark mode toggle function
function toggleDarkMode() {
    const body = document.body;
    const isDark = body.classList.contains('dark-mode');
    
    if (isDark) {
        body.classList.remove('dark-mode');
        localStorage.setItem('darkMode', 'false');
        document.querySelector('.dark-mode-toggle .sun-icon').style.display = 'block';
        document.querySelector('.dark-mode-toggle .moon-icon').style.display = 'none';
    } else {
        body.classList.add('dark-mode');
        localStorage.setItem('darkMode', 'true');
        document.querySelector('.dark-mode-toggle .sun-icon').style.display = 'none';
        document.querySelector('.dark-mode-toggle .moon-icon').style.display = 'block';
    }
}

// Initialize when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
    window.embedDesigner = new EmbedDesigner();
    
    // Initialize dark mode from localStorage
    const darkMode = localStorage.getItem('darkMode');
    if (darkMode === 'true') {
        document.body.classList.add('dark-mode');
        document.querySelector('.dark-mode-toggle .sun-icon').style.display = 'none';
        document.querySelector('.dark-mode-toggle .moon-icon').style.display = 'block';
    }
});