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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;
            margin: auto;
            padding: 20px;
            border-radius: 30px;
            background-color: #fafafa;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        }
        #chat-history {
            height: 530px;
            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;
        }
        #user-input:focus {
            border-color: #007bff;
            outline: none;
        }
        .btn-icon {
            background-color: #007bff;
            color: white;
        }
        .btn-close {
            background-color: #dc3545;
            color: white;
        }
        .btn-close:hover {
            background-color: #c82333;
        }
        .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 }}">
        <div id="chat-history" class="mb-3"></div>
        <div id="loading" class="spinner-border text-primary" role="status">
            <span class="sr-only">Loading...</span>
        </div>
        <div class="input-group mb-2">
            <input type="text" id="user-input" class="form-control" placeholder="Type your message..." aria-label="Message input">
            <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>
                <button id="close-button" class="btn btn-close" aria-label="Close chat">
                    <i class="fas fa-times"></i>
                </button>
            </div>
        </div>
    </div>
    <script>
        let chatHistoryArray = [];
        document.getElementById("send-button").addEventListener("click", sendMessage);
        document.getElementById("user-input").addEventListener("keypress", function(event) {
            if (event.key === "Enter") {
                event.preventDefault();
                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 = "";
            document.getElementById("loading").style.display = "block";
            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 {
                document.getElementById("loading").style.display = "none";
                hideTypingIndicator();
            }
        }
        
        function addMessage(sender, message, className) {
            const chatHistory = document.getElementById("chat-history");
            const messageElement = document.createElement("div");
            messageElement.className = `message ${className}`;
            const icon = sender === "User" ? '<i class="fas fa-user user-icon"></i>' : '<i class="fas fa-user-tie"></i>';
            messageElement.innerHTML = `${icon}<div>${message} <span class="timestamp">${new Date().toLocaleTimeString()}</span></div>`;
            messageElement.onclick = function() {
                const timestamp = messageElement.querySelector('.timestamp');
                timestamp.style.display = timestamp.style.display === 'none' ? 'block' : 'none';
            };
            chatHistory.appendChild(messageElement);
            chatHistory.scrollTop = chatHistory.scrollHeight;
        }
        
        function showTypingIndicator() {
            const typingElement = document.createElement("div");
            typingElement.className = "typing-indicator";
            typingElement.innerText = "Clara is typing...";
            document.getElementById("chat-history").appendChild(typingElement);
        }
        
        function hideTypingIndicator() {
            const typingIndicator = document.querySelector(".typing-indicator");
            if (typingIndicator) {
                typingIndicator.remove();
            }
        }
        
        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:', error);
            } finally {
                window.open('https://redfernstech.com/', '_blank');
            }
        }
    </script>
</body>
</html>