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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Architecture Nexus</title>
    <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet">
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/font/bootstrap-icons.css">
    <style>
        @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&display=swap');

        :root {
            --bg-color: #f0f4f8;
            --text-color: #333;
            --card-bg: #fff;
            --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --title-gradient: linear-gradient(45deg, #2862bf, #3fe1ab);
            --subtitle-color: #4b5563;
            --button-gradient: linear-gradient(45deg, #3b82f6, #10b981);
            --button-text: white;
            --border-color: #dee2e6;
        }

        [data-theme="dark"] {
            --bg-color: #1a202c;
            --text-color: #f8f8f9;
            --card-bg: #65738a;
            --card-shadow: 0 4px 6px rgba(56, 54, 54, 0.3);
            --title-gradient: linear-gradient(45deg, #4299e1, #48bb78);
            --subtitle-color: #a0aec0;
            --button-gradient: linear-gradient(45deg, #4299e1, #48bb78);
            --button-text: #1a202c;
            --border-color: #4a5568;
        }

        body {
            font-family: 'Poppins', sans-serif;
            background-color: var(--bg-color);
            color: var(--text-color);
            margin: 0;
            padding: 0;
            transition: background-color 0.3s, color 0.3s;
        }

        .title {
            font-weight: 700;
            font-size: 60px !important;
            background: var(--title-gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-align: center;
            margin: 0;
            padding: 2rem 0 0.5rem;
        }

        .subtitle {
            font-size: 24px;
            color: var(--subtitle-color);
            text-align: center;
        }

        .generate-button {
            background: var(--button-gradient);
            border: none;
            color: var(--button-text);
            font-weight: 600;
        }

        .generate-button:hover {
            opacity: 0.9;
        }

        .card {
            box-shadow: var(--card-shadow);
            background-color: var(--card-bg);
            border-color: var(--border-color);
        }

        #mermaid-output {
            width: 100%;
            height: 100%;
            position: relative;
            background-color: var(--card-bg);
        }

        .loading-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(255, 255, 255, 0.8);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 1000;
        }

        .chart-output {
            height: 800px;
            width: 100%;
            overflow: hidden;
            position: relative;
        }

        #mermaid-output svg { width: 100%; height: 100%; }

        @media (max-width: 768px) {
            .input-group { flex-direction: column; }
            .input-group > * { margin-bottom: 0.5rem; width: 100%; }
        }

        .fullscreen {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            z-index: 9999;
            background-color: var(--card-bg);
        }

        .fullscreen #mermaid-output {
            position: absolute;
            top: 0;
            bottom: 0;
            left: 0;
            right: 0;
            overflow: auto;
        }
        .form-control {
            font-size: 1.2rem;
            background-color: var(--card-bg);
            color: var(--text-color);
            min-width: 600px;
            border-color: var(--border-color);
        }

        .chart-controls {
            position: absolute;
            top: 10px;
            right: 10px;
            z-index: 1001;
        }

        .fullscreen .chart-output {
            height: 100vh;
        }

        .theme-toggle {
            position: fixed;
            top: 10px;
            right: 10px;
            z-index: 1002;
        }
    </style>
</head>
<body>
    <div id="app" class="container">
        <button @click="toggleTheme" class="btn btn-secondary theme-toggle">
            <i :class="isDarkMode ? 'bi-sun' : 'bi-moon'"></i>
        </button>
        <h1 class="title">AI Graph Intelligence</h1>
        <h2 class="subtitle">by Elevatics.ai</h2>
        <div class="row justify-content-center">
            <div class="col-12">
                <div class="card mb-4">
                    <div class="card-body">
                        <div class="input-group mb-3">
                            <input 
                                v-model="chartDescription" 
                                :disabled="isInputDisabled" 
                                class="form-control" 
                                placeholder="Describe the chart you want..." 
                                aria-label="Chart description" 
                            />
                            <button @click="generateChart" :disabled="isInputDisabled" class="btn generate-button">Generate</button>
                        </div>
                        <div class="chart-output position-relative" :class="{ 'fullscreen': isFullscreen }">
                            <div class="chart-controls btn-group">
                                <button @click="toggleFullscreen" class="btn btn-secondary" :title="isFullscreen ? 'Exit Fullscreen' : 'Enter Fullscreen'">
                                    <i class="bi" :class="isFullscreen ? 'bi-fullscreen-exit' : 'bi-arrows-fullscreen'"></i>
                                </button>
                                <div class="btn-group">
                                    <button type="button" class="btn btn-secondary " data-bs-toggle="dropdown" aria-expanded="false" title="Download">
                                        <i class="bi bi-download"></i>
                                    </button>
                                    <ul class="dropdown-menu">
                                        <li><a class="dropdown-item" href="#" @click="downloadChart('png')">Download as PNG</a></li>
                                        <li><a class="dropdown-item" href="#" @click="downloadChart('svg')">Download as SVG</a></li>
                                    </ul>
                                </div>
                            </div>
                            <div id="mermaid-output" class="border rounded">
                                <!-- Mermaid chart will be rendered here -->
                            </div>
                            <div v-if="loading" class="loading-overlay" aria-busy="true">
                                <div class="spinner-border text-primary" role="status">
                                    <span class="visually-hidden">Loading...</span>
                                </div>
                            </div>
                        </div>
                        <div v-if="error" class="alert alert-danger mt-3" role="alert">{{ error }}</div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- Scripts -->
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/vue.global.prod.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/html2canvas.min.js"></script>
    <script src="https://bumbu.me/svg-pan-zoom/dist/svg-pan-zoom.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/mermaid@10/dist/mermaid.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/uuid/8.3.2/uuid.min.js"></script>
    <script>
        mermaid.initialize({
            startOnLoad: false,
            securityLevel: 'strict',
            theme: 'default'
        });

        const { createApp, ref, onMounted } = Vue;

        createApp({
            setup() {
                const chartDescription = ref('');
                const error = ref('');
                const loading = ref(false);
                const isInputDisabled = ref(false);
                const isFullscreen = ref(false);
                const isDarkMode = ref(false);

                const API_ENDPOINT = 'https://pvanand-audio-chat.hf.space/llm-agent';
                const API_KEY = '44d5c2ac18ced6fc25c1e57dcd06fc0b31fb4ad97bf56e67540671a647465df4';

                const toggleTheme = () => {
                    isDarkMode.value = !isDarkMode.value;
                    document.body.setAttribute('data-theme', isDarkMode.value ? 'dark' : 'light');
                    localStorage.setItem('darkMode', isDarkMode.value);
                    updateMermaidTheme();
                };

                const updateMermaidTheme = () => {
                    mermaid.initialize({
                        theme: isDarkMode.value ? 'dark' : 'default'
                    });
                    if (hasChart()) {
                        generateChart();
                    }
                };

                onMounted(() => {
                    const savedDarkMode = localStorage.getItem('darkMode');
                    if (savedDarkMode !== null) {
                        isDarkMode.value = JSON.parse(savedDarkMode);
                        document.body.setAttribute('data-theme', isDarkMode.value ? 'dark' : 'light');
                        updateMermaidTheme();
                    }
                });

                const hasChart = () => {
                    const container = document.getElementById('mermaid-output');
                    return container && container.innerHTML.trim() !== '';
                };

                const generateChart = async () => {
                    if (!chartDescription.value.trim()) {
                        error.value = 'Please enter a chart description.';
                        return;
                    }
                    
                    loading.value = true;
                    error.value = '';
                    isInputDisabled.value = true;
                    
                    // Clear the previous chart
                    const container = document.getElementById('mermaid-output');
                    container.innerHTML = '';
                    
                    try {
                        const conversationId = uuid.v4();
                        const response = await axios.post(API_ENDPOINT, {
                            prompt: `Generate Mermaid syntax for the following chart description: ${chartDescription.value} enclosed in <chart> </chart> tags. Respond only with the Mermaid syntax, no additional text.`,
                            system_message: "You are a Mermaid chart Maker. Respond only with the Mermaid syntax enclosed in <chart> </chart> tags. No additional text.",
                            model_id: "anthropic/claude-3.5-sonnet",
                            conversation_id: conversationId,
                            user_id: "ai-chart-generator",
                        }, {
                            headers: {
                                'accept': 'application/json',
                                'X-API-Key': API_KEY,
                                'Content-Type': 'application/json'
                            }
                        });

                        const chartContent = extractChartContent(response.data);
                        if (chartContent) {
                            await renderMermaid(chartContent);
                        } else {
                            error.value = 'No valid chart content found in the response.';
                        }
                    } catch (err) {
                        error.value = 'Error generating chart. Please try again.';
                        console.error('API Error:', err.message);
                    } finally {
                        loading.value = false;
                        isInputDisabled.value = false;
                    }
                };

                const extractChartContent = (responseData) => {
                    const match = responseData.match(/<chart>([\s\S]*?)<\/chart>/);
                    if (match && match[1]) {
                        return match[1].trim().replace(/^```mermaid\n?/, '').replace(/```$/, '').trim();
                    }
                    return null;
                };

                const renderMermaid = async (input) => {
                    try {
                        const { svg } = await mermaid.render('mySvgId', input);
                        const container = document.getElementById('mermaid-output');
                        container.innerHTML = svg.replace(/[ ]*max-width:[ 0-9\.]*px;/i , '');
                        
                        svgPanZoom('#mySvgId', {
                            zoomEnabled: true,
                            controlIconsEnabled: true,
                            fit: true,
                            center: true
                        });

                        error.value = '';
                    } catch (err) {
                        error.value = 'Error rendering diagram. Please check your Mermaid syntax.';
                        console.error('Mermaid Error:', err.message);
                    }
                };

                const toggleFullscreen = () => {
                    const element = document.querySelector('.chart-output');
                    if (!document.fullscreenElement) {
                        if (element.requestFullscreen) {
                            element.requestFullscreen();
                        } else if (element.webkitRequestFullscreen) {
                            element.webkitRequestFullscreen();
                        } else if (element.msRequestFullscreen) {
                            element.msRequestFullscreen();
                        }
                    } else {
                        if (document.exitFullscreen) {
                            document.exitFullscreen();
                        } else if (document.webkitExitFullscreen) {
                            document.webkitExitFullscreen();
                        } else if (document.msExitFullscreen) {
                            document.msExitFullscreen();
                        }
                    }
                };

                const downloadChart = async (format) => {
                    if (!hasChart()) {
                        console.error('Chart is not ready for download');
                        return;
                    }

                    const element = document.getElementById('mermaid-output');
                    const filename = 'chart';

                    try {
                        switch (format) {
                            case 'png':
                                {
                                    const canvas = await html2canvas(element);
                                    const pngData = canvas.toDataURL('image/png');
                                    downloadURI(pngData, `${filename}.png`);
                                }
                                break;
                            case 'svg':
                                {
                                    const svgElement = element.querySelector('svg');
                                    if (!svgElement) throw new Error('SVG element not found');
                                    const svgData = new XMLSerializer().serializeToString(svgElement);
                                    const svgBlob = new Blob([svgData], {type: 'image/svg+xml;charset=utf-8'});
                                    const svgUrl = URL.createObjectURL(svgBlob);
                                    downloadURI(svgUrl, `${filename}.svg`);
                                    URL.revokeObjectURL(svgUrl);
                                }
                                break;
                        }
                    } catch (err) {
                        console.error('Error downloading chart:', err.message);
                    }
                };

                const downloadURI = (uri, name) => {
                    const link = document.createElement('a');
                    link.download = name;
                    link.href = uri;
                    document.body.appendChild(link);
                    link.click();
                    document.body.removeChild(link);
                };

                document.addEventListener('fullscreenchange', () => {
                    isFullscreen.value = !!document.fullscreenElement;
                });

                return {
                    chartDescription,
                    error,
                    loading,
                    isInputDisabled,
                    isFullscreen,
                    isDarkMode,
                    generateChart,
                    toggleFullscreen,
                    downloadChart,
                    toggleTheme
                };
            }
        }).mount('#app');
    </script>
</body>
</html>