PetConnectBackend/chat-interface.html at main · Gulsher17/PetConnectBackend · GitHub

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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>PetConnect Chat</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <script src="/socket.io/socket.io.js"></script>
</head>
<body class="bg-gray-100">
    <div class="max-w-4xl mx-auto h-screen flex flex-col">
        <!-- Chat Header -->
        <div class="bg-white shadow-sm border-b p-4">
            <div class="flex items-center justify-between">
                <div class="flex items-center space-x-4">
                    <button onclick="goBack()" class="text-gray-600 hover:text-gray-900 p-2 rounded-lg hover:bg-gray-100">
                        <i class="fas fa-arrow-left"></i>
                    </button>
                    <div id="petImage" class="w-10 h-10 bg-gray-200 rounded-full flex items-center justify-center">
                        <i class="fas fa-paw text-gray-500"></i>
                    </div>
                    <div>
                        <h1 id="petName" class="text-lg font-semibold text-gray-900">Loading...</h1>
                        <p id="chatStatus" class="text-sm text-gray-500">Foster Chat</p>
                    </div>
                </div>
                <div class="flex items-center space-x-2">
                    <span id="connectionStatus" class="px-2 py-1 bg-green-100 text-green-800 text-xs rounded-full">
                        <i class="fas fa-circle text-green-500 mr-1"></i>Online
                    </span>
                </div>
            </div>
        </div>

        <!-- Messages Container -->
        <div id="messagesContainer" class="flex-1 overflow-y-auto p-4 space-y-4 bg-gray-50">
            <div class="text-center text-gray-500 py-8">
                <i class="fas fa-comments text-4xl mb-2 text-gray-300"></i>
                <p>Loading messages...</p>
            </div>
        </div>

        <!-- Typing Indicator -->
        <div id="typingIndicator" class="hidden px-4 py-2">
            <div class="flex items-center space-x-2 text-gray-500">
                <div class="flex space-x-1">
                    <div class="w-2 h-2 bg-gray-400 rounded-full animate-bounce"></div>
                    <div class="w-2 h-2 bg-gray-400 rounded-full animate-bounce" style="animation-delay: 0.1s"></div>
                    <div class="w-2 h-2 bg-gray-400 rounded-full animate-bounce" style="animation-delay: 0.2s"></div>
                </div>
                <span class="text-sm" id="typingUser">Someone is typing...</span>
            </div>
        </div>

        <!-- Message Input -->
        <div class="bg-white border-t p-4">
            <div class="flex space-x-3">
                <div class="flex-1 relative">
                    <input
                        type="text"
                        id="messageInput"
                        placeholder="Type your message..."
                        class="w-full border border-gray-300 rounded-full px-4 py-3 focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-transparent"
                        maxlength="500"
                    >
                    <div class="absolute right-3 top-3 text-xs text-gray-400">
                        <span id="charCount">0</span>/500
                    </div>
                </div>
                <button
                    onclick="sendMessage()"
                    id="sendButton"
                    class="bg-indigo-600 text-white px-6 py-3 rounded-full hover:bg-indigo-700 font-medium transition-colors disabled:bg-indigo-300"
                    disabled
                >
                    <i class="fas fa-paper-plane"></i>
                </button>
            </div>
        </div>
    </div>

    <!-- Connection Status Toast -->
    <div id="connectionToast" class="fixed top-4 right-4 p-4 rounded-lg shadow-lg hidden z-50">
        <div class="flex items-center space-x-2">
            <i class="fas fa-wifi"></i>
            <span id="toastMessage"></span>
        </div>
    </div>

    <script>

    // Global variables
    let socket = null;
    let currentUser = null;
    let currentChat = null;
    let isConnected = false;

    // Get elements
    const messagesContainer = document.getElementById('messagesContainer');
    const messageInput = document.getElementById('messageInput');
    const sendButton = document.getElementById('sendButton');
    const charCount = document.getElementById('charCount');
    const typingIndicator = document.getElementById('typingIndicator');
    const connectionStatus = document.getElementById('connectionStatus');
    const connectionToast = document.getElementById('connectionToast');
    const petName = document.getElementById('petName');
    const petImage = document.getElementById('petImage');
    const chatStatus = document.getElementById('chatStatus');

    // Authentication
    const token = localStorage.getItem('token');
    if (!token) {
        window.location.href = 'index.html';
    }

    // Initialize chat when page loads
    document.addEventListener('DOMContentLoaded', initializeChat);

    function goBack() {
        if (window.history.length > 1) {
            window.history.back();
        } else {
            window.location.href = 'user-listings.html';
        }
    }

    function showToast(message, type = 'info') {
        const toast = document.getElementById('connectionToast');
        const toastMessage = document.getElementById('toastMessage');

        toastMessage.textContent = message;
        toast.className = `fixed top-4 right-4 p-4 rounded-lg shadow-lg flex items-center space-x-2 z-50 ${
            type === 'error' ? 'bg-red-500 text-white' :
            type === 'success' ? 'bg-green-500 text-white' :
            'bg-blue-500 text-white'
        }`;
        toast.classList.remove('hidden');

        setTimeout(() => {
            toast.classList.add('hidden');
        }, 3000);
    }

    // Character count for message input
    messageInput.addEventListener('input', function() {
        const length = this.value.length;
        charCount.textContent = length;

        // Enable/disable send button
        sendButton.disabled = length === 0 || length > 500;

        // Show warning if approaching limit
        if (length > 450) {
            charCount.className = 'absolute right-3 top-3 text-xs text-red-500';
        } else {
            charCount.className = 'absolute right-3 top-3 text-xs text-gray-400';
        }
    });

    // Allow sending message with Enter key
    messageInput.addEventListener('keypress', function(e) {
        if (e.key === 'Enter' && !sendButton.disabled) {
            sendMessage();
        }
    });

    // Typing indicators
    let typingTimer = null;
     let isTyping = false;
     messageInput.addEventListener('input', function() {
    const length = this.value.length;
    charCount.textContent = length;

    // Enable/disable send button
    sendButton.disabled = length === 0 || length > 500;

    // Show warning if approaching limit
    if (length > 450) {
        charCount.className = 'absolute right-3 top-3 text-xs text-red-500';
    } else {
        charCount.className = 'absolute right-3 top-3 text-xs text-gray-400';
    }

    // Typing indicators - FIXED: Only trigger once
    if (length > 0 && socket && isConnected && !isTyping) {
        isTyping = true;
        socket.emit('typing-start', { chatId: getChatId() });
    }

    // Clear previous timer
    if (typingTimer) clearTimeout(typingTimer);

    // Stop typing after 2 seconds of inactivity
    typingTimer = setTimeout(() => {
        if (isTyping) {
            isTyping = false;
            socket.emit('typing-stop', { chatId: getChatId() });
        }
    }, 2000);
});

    function getChatId() {
        const urlParams = new URLSearchParams(window.location.search);
        return urlParams.get('thread');
    }

    function getChatType() {
        const urlParams = new URLSearchParams(window.location.search);
        return urlParams.get('type') || 'foster';
    }

    // async function initializeChat() {
    //     showToast('Connecting to chat...', 'info');
    //     await loadCurrentUser();
    //     await initializeSocket();
    //     await loadChatDetails();
    //     await loadMessages();
    // }

    async function loadCurrentUser() {
        try {
            const response = await fetch('http://localhost:5001/api/users/me', {
                headers: {
                    'x-auth-token': token,
                    'Content-Type': 'application/json'
                }
            });

            if (response.ok) {
                currentUser = await response.json();
                console.log('Current user loaded:', currentUser.name);
            } else {
                throw new Error('Failed to load user profile');
            }
        } catch (error) {
            console.error('Load user error:', error);
            showToast('Failed to load user profile', 'error');
        }
    }

    async function initializeSocket() {
        try {
            // Connect to Socket.io
            socket = io('http://localhost:5001', {
                auth: {
                    token: token
                }
            });

            socket.on('connect', () => {
                console.log('✅ Socket connected');
                isConnected = true;
                connectionStatus.innerHTML = '<i class="fas fa-circle text-green-500 mr-1"></i>Connected';
                connectionStatus.className = 'px-2 py-1 bg-green-100 text-green-800 text-xs rounded-full';
                showToast('Connected to chat', 'success');

                // Join the chat room
                socket.emit('join-chat', getChatId());
            });

            socket.on('disconnect', (reason) => {
                console.log('❌ Socket disconnected:', reason);
                isConnected = false;
                connectionStatus.innerHTML = '<i class="fas fa-circle text-red-500 mr-1"></i>Disconnected';
                connectionStatus.className = 'px-2 py-1 bg-red-100 text-red-800 text-xs rounded-full';
                showToast('Disconnected from chat', 'error');
            });

            socket.on('connect_error', (error) => {
                console.error('Socket connection error:', error);
                isConnected = false;
                connectionStatus.innerHTML = '<i class="fas fa-circle text-red-500 mr-1"></i>Connection Failed';
                connectionStatus.className = 'px-2 py-1 bg-red-100 text-red-800 text-xs rounded-full';
                showToast('Connection failed: ' + error.message, 'error');
            });

            // Handle new messages
            socket.on('new-message', (message) => {
                console.log('New message received:', message);
                appendMessage(message);
                scrollToBottom();
            });

            // Handle typing indicators
            socket.on('user-typing', (data) => {
                if (data.userId !== currentUser._id) {
                    showTypingIndicator(data.userName || 'Other user');
                }
            });

            socket.on('user-stop-typing', (data) => {
                if (data.userId !== currentUser._id) {
                    hideTypingIndicator();
                }
            });

            // Handle welcome message
            socket.on('welcome', (data) => {
                console.log('Welcome message:', data);
            });

            // Handle errors
            socket.on('error', (error) => {
                console.error('Socket error:', error);
                showToast('Chat error: ' + error.message, 'error');
            });

        } catch (error) {
            console.error('Socket initialization error:', error);
            showToast('Failed to initialize chat connection', 'error');
        }
    }

    async function loadChatDetails() {
        try {
            const chatId = getChatId();
            const chatType = getChatType();

            const endpoint = chatType === 'foster'
                ? `/api/foster-chats/${chatId}`
                : `/api/chats/${chatId}`;

            const response = await fetch(`http://localhost:5001${endpoint}`, {
                headers: {
                    'x-auth-token': token,
                    'Content-Type': 'application/json'
                }
            });

            if (response.ok) {
                const result = await response.json();
                currentChat = result.chat;

                // Update UI with chat details
                if (currentChat.pet) {
                    petName.textContent = currentChat.pet.name;
                    chatStatus.textContent = `${chatType === 'foster' ? 'Foster' : 'Adoption'} Chat`;

                    // Set pet image if available
                    if (currentChat.pet.images && currentChat.pet.images.length > 0) {
                        petImage.innerHTML = `<img src="${currentChat.pet.images[0].url}" class="w-10 h-10 rounded-full object-cover" alt="${currentChat.pet.name}">`;
                    }
                }

                console.log('Chat details loaded:', currentChat);
            } else {
                throw new Error('Failed to load chat details');
            }
        } catch (error) {
            console.error('Load chat details error:', error);
            showToast('Failed to load chat details', 'error');
        }
    }


    async function loadMessages() {
    try {
        const chatId = getChatId();
        const chatType = getChatType();

        console.log('Loading messages for chat:', chatId, 'type:', chatType);

        const endpoint = chatType === 'foster'
            ? `/api/foster-chats/${chatId}/messages`
            : `/api/chats/${chatId}/messages`;

        const response = await fetch(`http://localhost:5001${endpoint}`, {
            headers: {
                'x-auth-token': token,
                'Content-Type': 'application/json'
            }
        });

        if (response.ok) {
            const result = await response.json();
            console.log('Messages loaded:', result.messages);
            displayMessages(result.messages);
            scrollToBottom();

            // Mark messages as read
            if (socket && isConnected) {
                socket.emit('mark-messages-read', { chatId: getChatId() });
            }
        } else {
            const errorText = await response.text();
            console.error('Failed to load messages:', errorText);
            throw new Error('Failed to load messages');
        }
    } catch (error) {
        console.error('Load messages error:', error);
        showToast('Failed to load messages: ' + error.message, 'error');
    }
}


    function displayMessages(messages) {
        messagesContainer.innerHTML = '';

        if (messages.length === 0) {
            messagesContainer.innerHTML = `
                <div class="text-center text-gray-500 py-8">
                    <i class="fas fa-comments text-4xl mb-2 text-gray-300"></i>
                    <p>No messages yet. Start the conversation!</p>
                </div>
            `;
            return;
        }

        messages.forEach(message => {
            appendMessage(message);
        });
    }

    function appendMessage(message) {
        const isOwnMessage = currentUser && message.sender._id === currentUser._id;

        const messageDiv = document.createElement('div');
        messageDiv.className = `flex ${isOwnMessage ? 'justify-end' : 'justify-start'} message-item`;
        messageDiv.setAttribute('data-message-id', message._id);

        messageDiv.innerHTML = `
            <div class="max-w-xs lg:max-w-md px-4 py-2 rounded-lg ${
                isOwnMessage
                    ? 'bg-indigo-600 text-white rounded-br-none'
                    : 'bg-white border border-gray-200 rounded-bl-none'
            } shadow-sm">
                <div class="flex items-center space-x-2 mb-1">
                    <span class="text-sm font-medium">${message.sender.name}</span>
                    <span class="text-xs opacity-70">${formatTime(message.createdAt)}</span>
                </div>
                <div class="mt-1 text-sm">${escapeHtml(message.content)}</div>
                ${message.attachments && message.attachments.length > 0 ? `
                    <div class="mt-2">
                        ${message.attachments.map(att =>
                            `<div class="text-xs text-blue-400 underline">📎 ${att.name}</div>`
                        ).join('')}
                    </div>
                ` : ''}
            </div>
        `;

        messagesContainer.appendChild(messageDiv);
    }

//     async function sendMessage() {
//         const content = messageInput.value.trim();

//         if (!content || !isConnected) {
//             return;
//         }

//  // Stop typing indicator
//     if (isTyping) {
//         isTyping = false;
//         socket.emit('typing-stop', { chatId: getChatId() });
//     }

//         try {
//             const chatId = getChatId();
//             const chatType = getChatType();

//             const endpoint = chatType === 'foster'
//                 ? `/api/foster-chats/${chatId}/messages`
//                 : `/api/chats/${chatId}/messages`;

//             // Disable input while sending
//             messageInput.disabled = true;
//             sendButton.disabled = true;
//             sendButton.innerHTML = '<i class="fas fa-spinner fa-spin"></i>';

//             const response = await fetch(`http://localhost:5001${endpoint}`, {
//                 method: 'POST',
//                 headers: {
//                     'x-auth-token': token,
//                     'Content-Type': 'application/json'
//                 },
//                 body: JSON.stringify({
//                     content: content,
//                     messageType: 'text'
//                 })
//             });

//             if (response.ok) {
//                 // Clear input
//                 messageInput.value = '';
//                 charCount.textContent = '0';
//                 sendButton.disabled = true;

//                 // Stop typing indicator
//                 if (socket) {
//                     socket.emit('typing-stop', { chatId: getChatId() });
//                 }

//                 // The message will appear via socket.io
//             } else {
//                 const errorData = await response.json();
//                 throw new Error(errorData.msg || 'Failed to send message');
//             }
//         } catch (error) {
//             console.error('Send message error:', error);
//             showToast('Failed to send message: ' + error.message, 'error');
//         } finally {
//             // Re-enable input
//             messageInput.disabled = false;
//             messageInput.focus();
//             sendButton.disabled = false;
//             sendButton.innerHTML = '<i class="fas fa-paper-plane"></i>';
//         }
//     }


async function sendMessage() {
    const content = messageInput.value.trim();

    if (!content || !isConnected || !socket) {
        showToast('Not connected to chat', 'error');
        return;
    }

    // Disable input while sending
    messageInput.disabled = true;
    sendButton.disabled = true;
    sendButton.innerHTML = '<i class="fas fa-spinner fa-spin"></i>';

    console.log('🚀 Sending message via Pure WebSocket:', content);

    // Send via WebSocket ONLY - no REST API
    socket.emit('send-message', {
        chatId: getChatId(),
        content: content,
        messageType: 'text'
    });

    // Clear input immediately for better UX
    messageInput.value = '';
    charCount.textContent = '0';

    // Stop typing indicator
    if (isTyping) {
        isTyping = false;
        socket.emit('typing-stop', { chatId: getChatId() });
    }

    console.log('✅ Message queued via WebSocket');

    // Re-enable input (message will appear via socket response)
    messageInput.disabled = false;
    messageInput.focus();
    sendButton.disabled = false;
    sendButton.innerHTML = '<i class="fas fa-paper-plane"></i>';
}


    function showTypingIndicator(userName) {
        document.getElementById('typingUser').textContent = `${userName} is typing...`;
        typingIndicator.classList.remove('hidden');
        scrollToBottom();
    }

    function hideTypingIndicator() {
        typingIndicator.classList.add('hidden');
    }

    function scrollToBottom() {
        messagesContainer.scrollTop = messagesContainer.scrollHeight;
    }

    function formatTime(timestamp) {
        const date = new Date(timestamp);
        return date.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' });
    }

    function escapeHtml(text) {
        const div = document.createElement('div');
        div.textContent = text;
        return div.innerHTML;
    }

    // Auto-scroll when new content is added
    const observer = new MutationObserver(scrollToBottom);
    observer.observe(messagesContainer, { childList: true, subtree: true });

    // Handle page visibility change (mark messages as read when tab becomes visible)
    document.addEventListener('visibilitychange', function() {
        if (!document.hidden && socket && isConnected) {
            socket.emit('mark-messages-read', { chatId: getChatId() });
        }
    });

    // Handle page before unload
    window.addEventListener('beforeunload', function() {
        if (socket) {
            socket.emit('leave-chat', { chatId: getChatId() });
            socket.disconnect();
        }
    });

// Add this function to validate chat access on page load
async function validateChatAccess() {
  return new Promise((resolve) => {
    if (!socket || !isConnected) {
      resolve(false);
      return;
    }

    socket.emit('validate-chat-access', { chatId: getChatId() }, (response) => {
      if (response.success && response.hasAccess) {
        console.log('✅ Chat access validated');
        resolve(true);
      } else {
        console.error('❌ No access to this chat');
        showToast('Access denied to this chat', 'error');
        setTimeout(() => window.location.href = 'my-foster-requests.html', 2000);
        resolve(false);
      }
    });
  });
}

// Update your initializeChat function to include validation
async function initializeChat() {
  showToast('Connecting to chat...', 'info');
  await loadCurrentUser();
  await initializeSocket();

  // Wait for socket connection
  await new Promise(resolve => {
    const checkConnection = setInterval(() => {
      if (isConnected) {
        clearInterval(checkConnection);
        resolve();
      }
    }, 100);
  });

  const hasAccess = await validateChatAccess();
  if (!hasAccess) return;

  await loadChatDetails();
  await loadMessages();
}


    </script>
</body>
</html>