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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>Caption Flow Server Dashboard - {{ flow_id }}</title>
    <style>
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            margin: 0;
            padding: 20px;
            background-color: #f4f7f9;
            color: #333;
        }
        .container {
            max-width: 1200px;
            margin: auto;
            background: #fff;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        h1 {
            color: #1e3a8a;
            border-bottom: 2px solid #eff6ff;
            padding-bottom: 10px;
            margin-bottom: 20px;
        }
        h2 {
            color: #3b82f6;
            margin-top: 30px;
            border-left: 4px solid #93c5fd;
            padding-left: 10px;
        }
        .status-box {
            padding: 15px;
            border-radius: 8px;
            font-weight: bold;
            margin-bottom: 20px;
            display: inline-block;
        }
        .status-ready { background-color: #d1fae5; color: #065f46; }
        .status-processing { background-color: #fef3c7; color: #b45309; }
        .form-group {
            margin-bottom: 15px;
        }
        label {
            display: block;
            margin-bottom: 5px;
            font-weight: 600;
        }
        input[type="text"], input[type="number"] {
            width: 100%;
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: 6px;
            box-sizing: border-box;
            font-size: 16px;
        }
        button {
            background-color: #3b82f6;
            color: white;
            padding: 10px 15px;
            border: none;
            border-radius: 6px;
            cursor: pointer;
            font-size: 16px;
            transition: background-color 0.2s;
        }
        button:hover {
            background-color: #2563eb;
        }
        .server-list {
            list-style: none;
            padding: 0;
        }
        .server-item {
            background-color: #f9fafb;
            border: 1px solid #eee;
            padding: 15px;
            margin-bottom: 10px;
            border-radius: 8px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .server-item .url {
            flex-grow: 1;
            font-family: monospace;
            font-size: 14px;
        }
        .server-item .stats {
            margin-left: 20px;
            font-size: 0.9em;
            color: #6b7280;
        }
        .server-item .status {
            font-weight: bold;
            color: #10b981;
            margin-right: 10px;
        }
        .server-item .status.busy {
            color: #f59e0b;
        }
        .remove-btn {
            background-color: #ef4444;
        }
        .remove-btn:hover {
            background-color: #dc2626;
        }
        .message-area {
            margin-top: 20px;
            padding: 10px;
            border-radius: 6px;
            display: none;
        }
        .message-success { background-color: #d1fae5; color: #065f46; }
        .message-error { background-color: #fee2e2; color: #991b1b; }
        .grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }
        .card {
            background: #fff;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
            border: 1px solid #e5e7eb;
        }
        .card-header {
            font-size: 1.1em;
            font-weight: 600;
            margin-bottom: 15px;
            color: #1f2937;
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>Caption Flow Server: {{ flow_id }}</h1>
        
        <div class="status-box status-{{ 'processing' if status == 'processing' else 'ready' }}">
            System Status: {{ status.capitalize() }}
        </div>

        <div class="grid">
            <div class="card">
                <div class="card-header">Processing State</div>
                <p><strong>Manager URL:</strong> <a href="{{ manager_url }}" target="_blank">{{ manager_url }}</a></p>
                <p><strong>Processed Files Count:</strong> {{ processed_files_count }}</p>
                <p><strong>Last Processed Course:</strong> {{ last_course if last_course else 'N/A' }}</p>
                <p><strong>Last Processed Index:</strong> {{ last_index }}</p>
            </div>
            
            <div class="card">
                <div class="card-header">Start New Course Processing</div>
                <form id="process-form">
                    <div class="form-group">
                        <label for="course_name">Course Name Prefix (e.g., DAREEFSA)</label>
                        <input type="text" id="course_name" name="course_name" required>
                    </div>
                    <div class="form-group">
                        <label for="start_index">Start Image Index (0 to start from beginning)</label>
                        <input type="number" id="start_index" name="start_index" value="0" min="0">
                    </div>
                    <button type="submit">Start Processing</button>
                </form>
            </div>
        </div>

        <h2>Caption Servers (Total: {{ total_servers }}, Busy: {{ busy_servers }})</h2>
        <div id="message-server" class="message-area"></div>

        <div class="card">
            <div class="card-header">Add New Server</div>
            <form id="add-server-form" style="display: flex; gap: 10px;">
                <input type="text" id="new_server_url" name="server_url" placeholder="Enter server URL (e.g., https://user-space.hf.space/analyze)" required style="flex-grow: 1;">
                <button type="submit">Add Server</button>
            </form>
        </div>

        <ul class="server-list" id="server-list">
            {% for server in servers %}
            <li class="server-item" data-url="{{ server.url }}">
                <span class="url">{{ server.url }}</span>
                <span class="stats">
                    <span class="status {% if server.busy %}busy{% endif %}">{{ 'BUSY' if server.busy else 'READY' }}</span>
                    | Processed: {{ server.total_processed }} 
                    | FPS: {{ "%.2f"|format(server.fps) }}
                </span>
                <button class="remove-btn" onclick="removeServer('{{ server.url }}')">Remove</button>
            </li>
            {% endfor %}
        </ul>
    </div>

    <script>
        const serverList = document.getElementById('server-list');
        const messageServer = document.getElementById('message-server');
        const messageProcess = document.getElementById('message-process');

        function showMessage(element, type, message) {
            element.className = `message-area message-${type}`;
            element.textContent = message;
            element.style.display = 'block';
            setTimeout(() => {
                element.style.display = 'none';
            }, 5000);
        }

        document.getElementById('add-server-form').addEventListener('submit', async function(e) {
            e.preventDefault();
            const urlInput = document.getElementById('new_server_url');
            const serverUrl = urlInput.value.trim();

            try {
                const response = await fetch('/add_server', {
                    method: 'POST',
                    headers: {
                        'Content-Type': 'application/x-www-form-urlencoded',
                    },
                    body: new URLSearchParams({ server_url: serverUrl })
                });

                const result = await response.json();

                if (response.ok) {
                    showMessage(messageServer, 'success', result.message);
                    // Add the new server to the list dynamically
                    const newItem = document.createElement('li');
                    newItem.className = 'server-item';
                    newItem.setAttribute('data-url', result.server.url);
                    newItem.innerHTML = `
                        <span class="url">${result.server.url}</span>
                        <span class="stats">
                            <span class="status">READY</span>
                            | Processed: 0 
                            | FPS: 0.00
                        </span>
                        <button class="remove-btn" onclick="removeServer('${result.server.url}')">Remove</button>
                    `;
                    serverList.appendChild(newItem);
                    urlInput.value = ''; // Clear input
                } else {
                    showMessage(messageServer, 'error', result.detail || 'Failed to add server.');
                }
            } catch (error) {
                showMessage(messageServer, 'error', 'Network error or server unreachable.');
            }
        });

        async function removeServer(serverUrl) {
            if (!confirm(`Are you sure you want to remove server: ${serverUrl}?`)) {
                return;
            }

            try {
                const response = await fetch('/remove_server', {
                    method: 'POST',
                    headers: {
                        'Content-Type': 'application/x-www-form-urlencoded',
                    },
                    body: new URLSearchParams({ server_url: serverUrl })
                });

                const result = await response.json();

                if (response.ok) {
                    showMessage(messageServer, 'success', result.message);
                    // Remove the item from the list dynamically
                    const itemToRemove = document.querySelector(`.server-item[data-url="${serverUrl}"]`);
                    if (itemToRemove) {
                        itemToRemove.remove();
                    }
                } else {
                    showMessage(messageServer, 'error', result.detail || 'Failed to remove server.');
                }
            } catch (error) {
                showMessage(messageServer, 'error', 'Network error or server unreachable.');
            }
        }

        document.getElementById('process-form').addEventListener('submit', async function(e) {
            e.preventDefault();
            const courseName = document.getElementById('course_name').value.trim();
            const startIndex = parseInt(document.getElementById('start_index').value, 10);

            try {
                const response = await fetch('/process_course', {
                    method: 'POST',
                    headers: {
                        'Content-Type': 'application/json',
                    },
                    body: JSON.stringify({ course_name: courseName, start_index: startIndex })
                });

                const result = await response.json();
                const processMessageArea = document.querySelector('.card:nth-child(2) .form-group').parentElement.querySelector('#message-process') || document.createElement('div');
                processMessageArea.id = 'message-process';
                if (!processMessageArea.parentElement) {
                    document.querySelector('.card:nth-child(2)').appendChild(processMessageArea);
                }

                if (response.ok) {
                    showMessage(processMessageArea, 'success', `Processing started for course: ${result.course_name} from index: ${result.start_index}.`);
                } else {
                    showMessage(processMessageArea, 'error', result.detail || 'Failed to start processing.');
                }
            } catch (error) {
                const processMessageArea = document.querySelector('.card:nth-child(2) .form-group').parentElement.querySelector('#message-process') || document.createElement('div');
                processMessageArea.id = 'message-process';
                if (!processMessageArea.parentElement) {
                    document.querySelector('.card:nth-child(2)').appendChild(processMessageArea);
                }
                showMessage(processMessageArea, 'error', 'Network error or server unreachable.');
            }
        });
    </script>
</body>
</html>