/**
 * DocumentControls Component
 *
 * Extracted from monolithic editor.js as part of architecture refactoring.
 * Handles the floating control panel and document-level actions.
 *
 * Dependencies:
 * - None (standalone component)
 */

/**
 * DocumentControls - Manages the floating control panel and its buttons
 */
class DocumentControls {
    constructor() {
        this.controlPanel = null;
        this.buttons = new Map();
        this.eventHandlers = new Map();
        this.isVisible = true;
    }

    /**
     * Create the control panel and add it to the DOM
     */
    create() {
        if (this.controlPanel) {
            this.destroy(); // Remove existing panel
        }

        // Also remove any existing panel with the same ID in the DOM
        const existingPanel = document.getElementById('markitect-global-controls');
        if (existingPanel && existingPanel.parentNode) {
            existingPanel.parentNode.removeChild(existingPanel);
        }

        // Create the floating control panel
        this.controlPanel = document.createElement('div');
        this.controlPanel.id = 'markitect-global-controls';
        this.controlPanel.style.cssText = `
            position: fixed;
            top: 20px;
            right: 20px;
            background: rgba(248, 249, 250, 0.95);
            border: 1px solid #dee2e6;
            border-radius: 8px;
            padding: 12px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            z-index: 1000;
            backdrop-filter: blur(8px);
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            font-size: 14px;
            min-width: 200px;
        `;

        // Add title
        const title = document.createElement('div');
        title.style.cssText = `
            font-weight: 600;
            margin-bottom: 8px;
            color: #495057;
            border-bottom: 1px solid #dee2e6;
            padding-bottom: 4px;
        `;
        title.textContent = 'Document Controls';

        // Create button container
        const buttonContainer = document.createElement('div');
        buttonContainer.id = 'button-container';
        buttonContainer.style.cssText = `
            display: flex;
            flex-direction: column;
            gap: 6px;
        `;

        this.controlPanel.appendChild(title);
        this.controlPanel.appendChild(buttonContainer);

        // Add default buttons
        this.addDefaultButtons();

        // Add debug messages container
        this.addDebugContainer();

        // Add to DOM
        document.body.appendChild(this.controlPanel);
    }

    /**
     * Add default buttons to the control panel
     */
    addDefaultButtons() {
        // Save Document button
        this.addButton('save-document', '💾 Save Document', '#28a745');

        // Reset All button
        this.addButton('reset-all', '🔄 Reset All', '#ffc107', '#212529');

        // Show Status button
        this.addButton('show-status', '📊 Show Status', '#17a2b8');

        // Debug button
        this.addButton('toggle-debug', '🔍 Debug', '#6c757d');
    }

    /**
     * Add debug container to the control panel
     */
    addDebugContainer() {
        const debugContainer = document.createElement('div');
        debugContainer.id = 'debug-messages-container';
        debugContainer.style.cssText = `
            margin-top: 12px;
            max-height: 300px;
            overflow-y: auto;
            border: 1px solid #dee2e6;
            border-radius: 4px;
            background: #f8f9fa;
            padding: 8px;
            font-family: 'Courier New', monospace;
            font-size: 12px;
            line-height: 1.4;
            display: none;
        `;

        this.controlPanel.appendChild(debugContainer);
    }

    /**
     * Add a button to the control panel
     */
    addButton(id, text, backgroundColor, textColor = 'white') {
        const buttonContainer = this.controlPanel.querySelector('#button-container');
        if (!buttonContainer) {
            throw new Error('Button container not found. Call create() first.');
        }

        const button = document.createElement('button');
        button.id = id;
        button.textContent = text;
        button.style.cssText = `
            background: ${backgroundColor};
            color: ${textColor};
            border: none;
            padding: 8px 12px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 13px;
            font-weight: 500;
            transition: background-color 0.2s;
        `;

        buttonContainer.appendChild(button);
        this.buttons.set(id, button);

        return button;
    }

    /**
     * Remove a button from the control panel
     */
    removeButton(id) {
        const button = this.buttons.get(id);
        if (button && button.parentNode) {
            button.parentNode.removeChild(button);
            this.buttons.delete(id);
            this.eventHandlers.delete(id);
        }
    }

    /**
     * Set event handlers for buttons
     */
    setEventHandlers(handlers) {
        for (const [buttonId, handler] of Object.entries(handlers)) {
            const button = this.buttons.get(buttonId);
            if (button) {
                // Remove existing handler if any
                if (this.eventHandlers.has(buttonId)) {
                    button.removeEventListener('click', this.eventHandlers.get(buttonId));
                }

                // Add new handler
                button.addEventListener('click', handler);
                this.eventHandlers.set(buttonId, handler);
            }
        }
    }

    /**
     * Show the control panel
     */
    show() {
        if (this.controlPanel) {
            this.controlPanel.style.display = 'block';
            this.isVisible = true;
        }
    }

    /**
     * Hide the control panel
     */
    hide() {
        if (this.controlPanel) {
            this.controlPanel.style.display = 'none';
            this.isVisible = false;
        }
    }

    /**
     * Update status display (can be extended as needed)
     */
    updateStatus(status) {
        // This method can be extended to show status information
        // For now, it just stores the status for potential display
        this.lastStatus = status;

        // Could update a status indicator in the panel if needed
        if (status && this.controlPanel) {
            const title = this.controlPanel.querySelector('div');
            if (title) {
                const statusText = `Document Controls (${status.totalSections} sections, ${status.editingSections} editing)`;
                // Could update title or add status indicator
            }
        }
    }

    /**
     * Get the control panel element
     */
    getControlPanel() {
        return this.controlPanel;
    }

    /**
     * Destroy the control panel and clean up
     */
    destroy() {
        if (this.controlPanel && this.controlPanel.parentNode) {
            this.controlPanel.parentNode.removeChild(this.controlPanel);
        }

        // Clean up references
        this.controlPanel = null;
        this.buttons.clear();
        this.eventHandlers.clear();
        this.isVisible = true;
    }

    /**
     * Check if the control panel is visible
     */
    isVisible() {
        return this.isVisible && this.controlPanel && this.controlPanel.style.display !== 'none';
    }

    /**
     * Get all button IDs
     */
    getButtonIds() {
        return Array.from(this.buttons.keys());
    }

    /**
     * Get a specific button by ID
     */
    getButton(id) {
        return this.buttons.get(id);
    }
}

// Export for use in tests and other modules
if (typeof module !== 'undefined' && module.exports) {
    module.exports = { DocumentControls };
}

// Export for browser use
if (typeof window !== 'undefined') {
    window.DocumentControls = DocumentControls;
}