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SpringGeminiChat

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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>Gemini Chat - Test UI</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .chat-container {
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
            width: 90%;
            max-width: 800px;
            height: 600px;
            display: flex;
            flex-direction: column;
            overflow: hidden;
        }

        .chat-header {
            background: linear-gradient(45deg, #4CAF50, #45a049);
            color: white;
            padding: 20px;
            text-align: center;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .header-info {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }

        .status-indicator {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9em;
            opacity: 0.9;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #ff4444;
            animation: pulse 2s infinite;
        }

        .status-dot.online {
            background: #44ff44;
        }

        @keyframes pulse {
            0% { opacity: 1; }
            50% { opacity: 0.5; }
            100% { opacity: 1; }
        }

        .chat-messages {
            flex: 1;
            padding: 20px;
            overflow-y: auto;
            background: #f8f9fa;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .message {
            display: flex;
            gap: 10px;
            animation: slideIn 0.3s ease-out;
        }

        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .message.user {
            justify-content: flex-end;
        }

        .message-bubble {
            max-width: 70%;
            padding: 12px 18px;
            border-radius: 18px;
            word-wrap: break-word;
            line-height: 1.4;
        }

        .message.user .message-bubble {
            background: linear-gradient(45deg, #007bff, #0056b3);
            color: white;
            border-bottom-right-radius: 4px;
        }

        .message.bot .message-bubble {
            background: white;
            border: 1px solid #e0e0e0;
            color: #333;
            border-bottom-left-radius: 4px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

        .message-time {
            font-size: 0.7em;
            opacity: 0.7;
            margin-top: 4px;
        }

        .typing-indicator {
            display: none;
            align-items: center;
            gap: 10px;
            padding: 15px 20px;
            font-style: italic;
            color: #666;
        }

        .typing-dots {
            display: flex;
            gap: 4px;
        }

        .typing-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #4CAF50;
            animation: typingDot 1.4s infinite ease-in-out;
        }

        .typing-dot:nth-child(2) { animation-delay: 0.2s; }
        .typing-dot:nth-child(3) { animation-delay: 0.4s; }

        @keyframes typingDot {
            0%, 60%, 100% { transform: translateY(0); }
            30% { transform: translateY(-10px); }
        }

        .chat-input-container {
            padding: 20px;
            background: white;
            border-top: 1px solid #e0e0e0;
        }

        .chat-input-form {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .chat-input {
            flex: 1;
            padding: 12px 18px;
            border: 2px solid #e0e0e0;
            border-radius: 25px;
            outline: none;
            font-size: 16px;
            transition: border-color 0.3s;
        }

        .chat-input:focus {
            border-color: #4CAF50;
        }

        .send-button {
            background: linear-gradient(45deg, #4CAF50, #45a049);
            color: white;
            border: none;
            border-radius: 50%;
            width: 50px;
            height: 50px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.2s, box-shadow 0.2s;
            font-size: 20px;
        }

        .send-button:hover {
            transform: scale(1.05);
            box-shadow: 0 5px 15px rgba(76, 175, 80, 0.4);
        }

        .send-button:disabled {
            background: #ccc;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }

        .error-message {
            background: #ffebee;
            color: #c62828;
            padding: 10px;
            border-radius: 5px;
            margin: 10px 20px;
            border-left: 4px solid #f44336;
            display: none;
        }

        .health-status {
            font-size: 0.8em;
            opacity: 0.8;
        }

        /* Responsive Design */
        @media (max-width: 600px) {
            .chat-container {
                width: 95%;
                height: 90vh;
                margin: 20px;
            }

            .chat-header {
                padding: 15px;
            }

            .chat-messages {
                padding: 15px;
            }

            .message-bubble {
                max-width: 85%;
            }

            .chat-input-container {
                padding: 15px;
            }
        }

        /* Scrollbar Styling */
        .chat-messages::-webkit-scrollbar {
            width: 6px;
        }

        .chat-messages::-webkit-scrollbar-track {
            background: #f1f1f1;
            border-radius: 3px;
        }

        .chat-messages::-webkit-scrollbar-thumb {
            background: #c1c1c1;
            border-radius: 3px;
        }

        .chat-messages::-webkit-scrollbar-thumb:hover {
            background: #a8a8a8;
        }
    </style>
</head>
<body>
<div class="chat-container">
    <div class="chat-header">
        <div class="header-info">
            <h2>🤖 Gemini Chat Assistant</h2>
            <div class="status-indicator">
                <div class="status-dot" id="statusDot"></div>
                <span id="statusText">Checking connection...</span>
            </div>
        </div>
        <div class="health-status">
            <button onclick="checkHealth()" style="background: rgba(255,255,255,0.2); border: 1px solid rgba(255,255,255,0.3); color: white; padding: 5px 10px; border-radius: 15px; cursor: pointer; font-size: 0.8em;">
                🔄 Check Status
            </button>
        </div>
    </div>

    <div class="error-message" id="errorMessage"></div>

    <div class="chat-messages" id="chatMessages">
        <div class="message bot">
            <div class="message-bubble">
                👋 Hello! I'm your Gemini-powered chat assistant. How can I help you today?
                <div class="message-time" id="welcomeTime"></div>
            </div>
        </div>
    </div>

    <div class="typing-indicator" id="typingIndicator">
        <span>Gemini is thinking</span>
        <div class="typing-dots">
            <div class="typing-dot"></div>
            <div class="typing-dot"></div>
            <div class="typing-dot"></div>
        </div>
    </div>

    <div class="chat-input-container">
        <form class="chat-input-form" id="chatForm">
            <input
                    type="text"
                    class="chat-input"
                    id="messageInput"
                    placeholder="Type your message here..."
                    autocomplete="off"
                    maxlength="1000"
            >
            <button type="submit" class="send-button" id="sendButton">
                ➤
            </button>
        </form>
    </div>
</div>

<script>
    // Configuration
    const API_BASE_URL = 'http://localhost:8080/api/chat';

    // DOM Elements
    const chatMessages = document.getElementById('chatMessages');
    const messageInput = document.getElementById('messageInput');
    const sendButton = document.getElementById('sendButton');
    const chatForm = document.getElementById('chatForm');
    const typingIndicator = document.getElementById('typingIndicator');
    const errorMessage = document.getElementById('errorMessage');
    const statusDot = document.getElementById('statusDot');
    const statusText = document.getElementById('statusText');

    // Initialize
    document.addEventListener('DOMContentLoaded', function() {
        document.getElementById('welcomeTime').textContent = getCurrentTime();
        checkHealth();
        messageInput.focus();
    });

    // Event Listeners
    chatForm.addEventListener('submit', function(e) {
        e.preventDefault();
        sendMessage();
    });

    messageInput.addEventListener('keypress', function(e) {
        if (e.key === 'Enter' && !e.shiftKey) {
            e.preventDefault();
            sendMessage();
        }
    });

    // Functions
    function getCurrentTime() {
        return new Date().toLocaleTimeString('en-US', {
            hour12: true,
            hour: 'numeric',
            minute: '2-digit'
        });
    }

    function showError(message) {
        errorMessage.textContent = message;
        errorMessage.style.display = 'block';
        setTimeout(() => {
            errorMessage.style.display = 'none';
        }, 5000);
    }

    function updateStatus(online, message) {
        statusDot.className = `status-dot ${online ? 'online' : ''}`;
        statusText.textContent = message;
    }

    async function checkHealth() {
        try {
            const response = await fetch(`${API_BASE_URL}/health`);
            if (response.ok) {
                const data = await response.json();
                updateStatus(true, `Connected • ${data.service}`);
            } else {
                updateStatus(false, 'Backend unavailable');
            }
        } catch (error) {
            updateStatus(false, 'Connection failed');
            console.error('Health check failed:', error);
        }
    }

    function addMessage(content, isUser = false) {
        const messageDiv = document.createElement('div');
        messageDiv.className = `message ${isUser ? 'user' : 'bot'}`;

        const bubbleDiv = document.createElement('div');
        bubbleDiv.className = 'message-bubble';
        bubbleDiv.innerHTML = `
                ${content}
                <div class="message-time">${getCurrentTime()}</div>
            `;

        messageDiv.appendChild(bubbleDiv);
        chatMessages.appendChild(messageDiv);

        // Scroll to bottom
        chatMessages.scrollTop = chatMessages.scrollHeight;
    }

    function showTypingIndicator() {
        typingIndicator.style.display = 'flex';
        chatMessages.scrollTop = chatMessages.scrollHeight;
    }

    function hideTypingIndicator() {
        typingIndicator.style.display = 'none';
    }

    function setLoading(loading) {
        sendButton.disabled = loading;
        sendButton.textContent = loading ? '⏳' : '➤';
        messageInput.disabled = loading;

        if (loading) {
            showTypingIndicator();
        } else {
            hideTypingIndicator();
        }
    }

    async function sendMessage() {
        const message = messageInput.value.trim();
        if (!message) return;

        // Add user message
        addMessage(message, true);
        messageInput.value = '';
        setLoading(true);

        try {
            const response = await fetch(`${API_BASE_URL}/message`, {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                },
                body: JSON.stringify({ message: message })
            });

            if (!response.ok) {
                throw new Error(`HTTP error! status: ${response.status}`);
            }

            const data = await response.json();

            if (data.success) {
                // Format the response for better display
                const formattedResponse = data.response
                    .replace(/\*\*(.*?)\*\*/g, '<strong>$1</strong>')
                    .replace(/\n/g, '<br>');

                addMessage(formattedResponse, false);
            } else {
                throw new Error(data.error || 'Unknown error occurred');
            }

        } catch (error) {
            console.error('Error sending message:', error);
            showError(`Failed to send message: ${error.message}`);
            addMessage('😔 Sorry, I encountered an error. Please try again or check if the backend is running.', false);
        } finally {
            setLoading(false);
            messageInput.focus();
        }
    }

    // Auto-focus input when clicking anywhere in chat area
    chatMessages.addEventListener('click', () => {
        if (!messageInput.disabled) {
            messageInput.focus();
        }
    });

    // Check health status periodically
    setInterval(checkHealth, 30000); // Check every 30 seconds
</script>
</body>
</html>