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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">
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css">
    <style>
        body {
            font-family: Arial, sans-serif;
            background-color: #eef1f5;
            margin: 0;
            padding: 0;
        }
        #chat-container {
            max-width: 500px;
            position: relative;
            margin: auto;
            padding: 20px;
            border-radius: 30px;
            background-color: #fafafa;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        }
        #chat-history {
            height: 475px;
            overflow-y: auto;
            margin-bottom: 10px;
            padding: 10px;
            background-color: #f9f9f9;
            background: linear-gradient(135deg, #f0f4ff 0%, #ffd1d1 100%);
            border-radius: 20px;
            box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.1);
        }
        .message {
            position: relative;
            padding: 8px 12px;
            margin: 5px 0;
            border-radius: 20px;
            max-width: 70%;
            font-size: 0.85em;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        .user-message {
            background: linear-gradient(135deg, #d1ecf1 0%, #a8d8e0 100%);
            color: #0c5460;
            margin-left: auto;
            border-radius: 15px 15px 0 15px;
        }
        .bot-message {
            background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
            color: #721c24;
            margin-right: auto;
            border-radius: 15px 15px 15px 0;
        }
        .user-icon, .bot-icon {
            margin-right: 8px;
            font-size: 1.1em;
        }
        #loading {
            display: none;
            margin: 10px 0;
            text-align: center;
        }
        #user-input {
            border: 1px solid #ccc;
            border-radius: 5px;
            resize: none; /* Prevents resizing */
        }
        #user-input:focus {
            border-color: #007bff;
            outline: none;
        }
        .btn-icon {
            background-color: #007bff;
            color: white;
        }
        .btn-close {
            position: absolute; /* Keep it absolute within the chat container */
            top: 10px; /* Adjust top position */
            right: 10px; /* Adjust left position */
            background-color: #dc3545; /* Red color for close button */
            color: white;
            border: none; /* Remove border for a cleaner look */
            border-radius: 50%; /* Round shape */
            width: 30px; /* Set width */
            height: 30px; /* Set height */
            display: flex; /* Flexbox for centering icon */
            align-items: center; /* Center vertically */
            justify-content: center; /* Center horizontally */
            transition: background-color 0.3s; /* Add transition for hover effect */
        }
        .btn-close:hover {
            background-color: #c82333; /* Darker red on hover */
        }
        .typing-indicator {
            font-style: italic;
            color: #aaa;
            margin: 5px 0;
        }
        .timestamp {
            font-size: 0.75em;
            color: #aaa;
            display: none;
            margin-top: 5px;
        }
    </style>
    <title>Chat Interface</title>
</head>
<body>
    <div id="chat-container" class="rounded p-4 shadow">
        <input type="hidden" id="user-id" value="{{ user_id }}">
        <button id="close-button" class="btn btn-close" aria-label="Close chat">
            <i class="fas fa-arrow-left"></i>
        </button>
        <div id="chat-history" class="mb-3"></div>
        <div class="input-group mb-2">
            <textarea id="user-input" class="form-control" rows="2" placeholder="Type your message..." aria-label="Message input"></textarea>
            <div class="input-group-append">
                <button id="send-button" class="btn btn-icon" aria-label="Send message">
                    <i class="fas fa-paper-plane"></i>
                </button>
            </div>
        </div>
        <small class="form-text text-muted">Press Shift + Enter for a new line</small>
    </div>    
    <script>
        let chatHistoryArray = [];
        document.getElementById("send-button").addEventListener("click", sendMessage);
        document.getElementById("user-input").addEventListener("keypress", function(event) {
            if (event.key === "Enter" && !event.shiftKey) { // Only send if Enter is pressed without Shift
                event.preventDefault(); // Prevent default newline behavior
                sendMessage();
            }
        });
        document.getElementById("close-button").addEventListener("click", closeChat);
        
        async function sendMessage() {
    const input = document.getElementById("user-input");
    const userId = document.getElementById("user-id").value;
    const message = input.value.trim();
    if (message === "") {
        return;
    }
    addMessage("User", message, "user-message");
    chatHistoryArray.push({ userId, sender: "User", message });
    input.value = "";
    showTypingIndicator();
    try {
        const response = await fetch("/chat/", {
            method: "POST",
            headers: {
                "Content-Type": "application/json"
            },
            body: JSON.stringify({ message })
        });
        if (!response.ok) {
            throw new Error(`HTTP error! Status: ${response.status}`);
        }
        const data = await response.json();
        addMessage("Bot", data.response, "bot-message");
        chatHistoryArray.push({ userId, sender: "Bot", message: data.response });
    } catch (error) {
        console.error('Error:', error);
        addMessage("Bot", "Sorry, something went wrong.", "bot-message");
    } finally {
        hideTypingIndicator();
    }
}

        
        async function closeChat() {
            const userId = document.getElementById("user-id").value;
            try {
                await fetch("/hist/", {
                    method: "POST",
                    headers: {
                        "Content-Type": "application/json"
                    },
                    body: JSON.stringify({ history: chatHistoryArray, userId })
                });
            } catch (error) {
                console.error('Error sending chat history on close:', error);
            } finally {
                const chatContainer = document.getElementById("chat-container");
                window.top.location.href = 'https://redfernstech.com/chat-bot-test/'; // Or use chatContainer.remove(); to completely remove it
            }
        }
        function addMessage(sender, message, className) {
    const chatHistory = document.getElementById("chat-history");
    const messageElement = document.createElement("div");
    messageElement.className = `message ${className}`;
    // Check if the message contains a URL
    const linkRegex = /(https?:\/\/[^\s]+)/g;
    const formattedMessage = message.replace(linkRegex, function(url) {
        let linkText;
        if (url === "https://appexchange.salesforce.com/appxListingDetail?listingId=cf4b19d4-8667-49f7-83b0-d2bc4032527b") {
            linkText = "Visit this link to check out the Product Filter App.";
        } else if (url === "https://appexchange.salesforce.com/appxListingDetail?listingId=e671f4fe-92fb-4760-99e5-7a5df5754cfe") {
            linkText = "Visit this link to check out the Mass Approvals App.";
        } else if (url === "https://appexchange.salesforce.com/appxListingDetail?listingId=3473ffd3-d530-462f-828f-d2c69f80d89d") {
            linkText = "Visit this link to check out the Thumbnail Viewer App.";
        } else if (url === "https://appexchange.salesforce.com/appxListingDetail?listingId=6d605bd9-de3c-49d3-9fa4-ec3caabd5d63") {
            linkText = "Visit this link to check out the Currency Conversion App.";
        } else if (url === "https://redfernstech.com/careers/") {
            linkText = "Visit this link to check out the careers.";
        } else {
            linkText = "Visit this link."; // Fallback for other URLs
        }
        return `<a href="${url}" target="_blank">${linkText}</a>`;
    });
    messageElement.innerHTML = `<span class="${sender.toLowerCase()}-icon">
        ${sender === "User" ? '<i class="fas fa-user"></i>' : '<img src="https://raw.githubusercontent.com/SRINIVASULU-2003/srinu/refs/heads/main/static/bot.jpeg" alt="Bot" style="width: 20px; height: 20px; border-radius: 50%;">'}
    </span>${formattedMessage}<div class="timestamp">${new Date().toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })}</div>`;
    chatHistory.appendChild(messageElement);
    chatHistory.scrollTop = chatHistory.scrollHeight; // Scroll to bottom
}

        
        function showTypingIndicator() {
            const chatHistory = document.getElementById("chat-history");
            const typingIndicator = document.createElement("div");
            typingIndicator.className = "typing-indicator";
            typingIndicator.id = "typing-indicator";
            typingIndicator.innerText = "Bot is typing...";
            chatHistory.appendChild(typingIndicator);
            chatHistory.scrollTop = chatHistory.scrollHeight; // Scroll to bottom
        }
        
        function hideTypingIndicator() {
            const typingIndicator = document.getElementById("typing-indicator");
            if (typingIndicator) {
                typingIndicator.remove();
            }
        }
    </script>
</body>
</html>