(function() {
    'use strict';
    
    // Prevent multiple initialization
    if (window.__KBEE_WIDGET_LOADED__) {
        console.warn('[KBee Widget] Already loaded');
        return;
    }
    window.__KBEE_WIDGET_LOADED__ = true;

    // Find the script tag to read configuration
    const scriptTag = document.currentScript || 
                      Array.from(document.querySelectorAll('script')).find(s => s.src && s.src.includes('serveWidgetScript'));
    
    if (!scriptTag) {
        console.error('[KBee Widget] Could not find widget script tag');
        return;
    }

    // Read configuration from data attributes
    const config = {
        kbPath: scriptTag.getAttribute('data-kb-path'),
        title: scriptTag.getAttribute('data-title') || 'Help Center',
        position: scriptTag.getAttribute('data-position') || 'bottom-right',
        icon: scriptTag.getAttribute('data-icon') || 'help-circle',
        theme: scriptTag.getAttribute('data-theme') || 'daylight',
        primaryColor: scriptTag.getAttribute('data-primary-color') || '#3B82F6'
    };

    // Validate required config
    if (!config.kbPath) {
        console.error('[KBee Widget] Error: data-kb-path attribute is required');
        return;
    }

    console.log('[KBee Widget] Initializing with config:', config);

    // State
    let isPanelOpen = false;

    // Build the iframe URL - use the full kbee.page domain
    const embedUrl = 'https://kbee.page/functions/serveEmbedPage?path=' + encodeURIComponent(config.kbPath) + 
                     '&theme=' + encodeURIComponent(config.theme);

    console.log('[KBee Widget] Iframe URL:', embedUrl);

    // Icon SVGs
    const icons = {
        'help-circle': '<circle cx="12" cy="12" r="10"></circle><path d="M9.09 9a3 3 0 0 1 5.83 1c0 2-3 3-3 3"></path><line x1="12" y1="17" x2="12.01" y2="17"></line>',
        'message-circle': '<path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z"></path>',
        'life-buoy': '<circle cx="12" cy="12" r="10"></circle><circle cx="12" cy="12" r="4"></circle><line x1="4.93" y1="4.93" x2="9.17" y2="9.17"></line><line x1="14.83" y1="14.83" x2="19.07" y2="19.07"></line><line x1="14.83" y1="9.17" x2="19.07" y2="4.93"></line><line x1="14.83" y1="9.17" x2="18.36" y2="5.64"></line><line x1="4.93" y1="19.07" x2="9.17" y2="14.83"></line>',
        'headphones': '<path d="M3 18v-6a9 9 0 0 1 18 0v6"></path><path d="M21 19a2 2 0 0 1-2 2h-1a2 2 0 0 1-2-2v-3a2 2 0 0 1 2-2h3zM3 19a2 2 0 0 0 2 2h1a2 2 0 0 0 2-2v-3a2 2 0 0 0-2-2H3z"></path>',
        'mail': '<path d="M4 4h16c1.1 0 2 .9 2 2v12c0 1.1-.9 2-2 2H4c-1.1 0-2-.9-2-2V6c0-1.1.9-2 2-2z"></path><polyline points="22,6 12,13 2,6"></polyline>'
    };

    const iconSvg = icons[config.icon] || icons['help-circle'];

    // Create styles
    const styles = `
        #kbee-widget-container * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        #kbee-widget-button {
            position: fixed;
            ${config.position === 'bottom-left' ? 'left: 20px;' : 'right: 20px;'}
            bottom: 20px;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background-color: ${config.primaryColor};
            border: none;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            cursor: pointer;
            z-index: 999998;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            color: white;
            font-size: 28px;
        }
        
        #kbee-widget-button:hover {
            transform: scale(1.05);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
        }
        
        #kbee-widget-button:active {
            transform: scale(0.95);
        }

        #kbee-widget-button svg {
            width: 28px;
            height: 28px;
        }
        
        #kbee-widget-panel {
            position: fixed;
            ${config.position === 'bottom-left' ? 'left: 20px;' : 'right: 20px;'}
            bottom: 90px;
            width: 400px;
            max-width: calc(100vw - 40px);
            height: 70vh;
            max-height: 700px;
            background: white;
            border-radius: 12px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
            z-index: 999999;
            display: none;
            flex-direction: column;
            overflow: hidden;
            transition: opacity 0.2s ease, transform 0.2s ease;
            opacity: 0;
            transform: translateY(10px);
        }
        
        #kbee-widget-panel.open {
            display: flex;
            opacity: 1;
            transform: translateY(0);
        }
        
        #kbee-widget-header {
            background-color: ${config.primaryColor};
            color: white;
            padding: 16px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-shrink: 0;
        }
        
        #kbee-widget-header h3 {
            font-size: 18px;
            font-weight: 600;
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
        }
        
        #kbee-widget-close {
            background: none;
            border: none;
            color: white;
            font-size: 24px;
            cursor: pointer;
            padding: 0;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 4px;
            transition: background-color 0.2s ease;
        }
        
        #kbee-widget-close:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }
        
        #kbee-widget-iframe {
            flex: 1;
            border: none;
            width: 100%;
            height: 100%;
        }
        
        #kbee-widget-loading {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
            color: #666;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
        }
        
        #kbee-widget-loading .spinner {
            border: 3px solid #f3f3f3;
            border-top: 3px solid ${config.primaryColor};
            border-radius: 50%;
            width: 40px;
            height: 40px;
            animation: kbee-spin 1s linear infinite;
            margin: 0 auto 12px;
        }
        
        @keyframes kbee-spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        @media (max-width: 480px) {
            #kbee-widget-panel {
                width: calc(100vw - 40px);
                height: 80vh;
                bottom: 10px;
                ${config.position === 'bottom-left' ? 'left: 20px;' : 'right: 20px;'}
            }
            
            #kbee-widget-button {
                width: 56px;
                height: 56px;
                bottom: 16px;
                ${config.position === 'bottom-left' ? 'left: 16px;' : 'right: 16px;'}
            }
        }
    `;

    // Inject styles
    const styleSheet = document.createElement('style');
    styleSheet.textContent = styles;
    document.head.appendChild(styleSheet);

    // Create widget HTML
    const container = document.createElement('div');
    container.id = 'kbee-widget-container';
    container.innerHTML = `
        <button id="kbee-widget-button" aria-label="Open ${config.title}">
            <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
                ${iconSvg}
            </svg>
        </button>
        
        <div id="kbee-widget-panel">
            <div id="kbee-widget-header">
                <h3>${config.title}</h3>
                <button id="kbee-widget-close" aria-label="Close">×</button>
            </div>
            <div style="position: relative; flex: 1;">
                <div id="kbee-widget-loading">
                    <div class="spinner"></div>
                    <div>Loading...</div>
                </div>
                <iframe 
                    id="kbee-widget-iframe" 
                    src="${embedUrl}"
                    title="${config.title}"
                    allow="clipboard-read; clipboard-write"
                    sandbox="allow-scripts allow-same-origin allow-forms allow-popups allow-popups-to-escape-sandbox"
                ></iframe>
            </div>
        </div>
    `;

    // Wait for DOM to be ready
    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', () => {
            document.body.appendChild(container);
            initWidget();
        });
    } else {
        document.body.appendChild(container);
        initWidget();
    }

    function initWidget() {
        const button = document.getElementById('kbee-widget-button');
        const panel = document.getElementById('kbee-widget-panel');
        const closeBtn = document.getElementById('kbee-widget-close');
        const iframe = document.getElementById('kbee-widget-iframe');
        const loading = document.getElementById('kbee-widget-loading');

        if (!button || !panel || !closeBtn || !iframe) {
            console.error('[KBee Widget] Widget elements not found');
            return;
        }

        // Hide loading indicator when iframe loads
        iframe.addEventListener('load', () => {
            console.log('[KBee Widget] Iframe loaded successfully');
            if (loading) {
                loading.style.display = 'none';
            }
        });

        // Handle iframe errors
        iframe.addEventListener('error', () => {
            console.error('[KBee Widget] Iframe failed to load');
            if (loading) {
                loading.innerHTML = '<div style="color: #dc2626;">Failed to load content</div>';
            }
        });

        // Toggle panel
        button.addEventListener('click', () => {
            isPanelOpen = !isPanelOpen;
            if (isPanelOpen) {
                panel.classList.add('open');
                console.log('[KBee Widget] Panel opened');
            } else {
                panel.classList.remove('open');
                console.log('[KBee Widget] Panel closed');
            }
        });

        // Close panel
        closeBtn.addEventListener('click', () => {
            isPanelOpen = false;
            panel.classList.remove('open');
            console.log('[KBee Widget] Panel closed via close button');
        });

        // Close on escape key
        document.addEventListener('keydown', (e) => {
            if (e.key === 'Escape' && isPanelOpen) {
                isPanelOpen = false;
                panel.classList.remove('open');
                console.log('[KBee Widget] Panel closed via Escape key');
            }
        });

        console.log('[KBee Widget] Initialized successfully');
    }
})();