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<!-- templates/index.html -->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>AI Tutor - Doubt Solver</title>
    <style>

        body {

            font-family: Arial, sans-serif;

            max-width: 800px;

            margin: 0 auto;

            padding: 20px;

        }

        h1 {

            color: #333;

        }

        .control-bar {

            display: flex;

            justify-content: space-between;

            align-items: center;

            margin-bottom: 15px;

        }

        .chat-container {

            border: 1px solid #ddd;

            border-radius: 8px;

            padding: 20px;

            height: 500px;

            overflow-y: auto;

            margin-bottom: 20px;

            background-color: #f9f9f9;

        }

        .message {

            margin-bottom: 15px;

            padding: 10px;

            border-radius: 5px;

            max-width: 80%;

        }

        .user {

            background-color: #e3f2fd;

            margin-left: auto;

            text-align: right;

        }

        .model {

            background-color: #f0f0f0;

        }

        /* Preserve raw Markdown formatting */

        .message pre {

            margin: 0;

            white-space: pre-wrap;  /* preserve line breaks and wrap */

            font-family: inherit;

        }

        .input-form {

            display: flex;

            gap: 10px;

            align-items: center;

        }

        .input-form input[type="text"] {

            flex-grow: 1;

            padding: 10px;

            border: 1px solid #ddd;

            border-radius: 5px;

        }

        .input-form input[type="file"] {

            display: none;

        }

        .file-upload-label {

            display: inline-block;

            padding: 8px 12px;

            background-color: #f0f0f0;

            border: 1px solid #ddd;

            border-radius: 5px;

            cursor: pointer;

        }

        .file-upload-label:hover {

            background-color: #e3e3e3;

        }

        .file-name {

            margin-left: 10px;

            font-size: 0.9em;

            color: #666;

        }

        .input-form button {

            padding: 10px 20px;

            background-color: #1a73e8;

            color: white;

            border: none;

            border-radius: 5px;

            cursor: pointer;

        }

        .input-form button:hover {

            background-color: #1558b7;

        }

        .tab-buttons {

            margin-bottom: 15px;

        }

        .tab-button {

            padding: 8px 15px;

            background-color: #f0f0f0;

            border: 1px solid #ddd;

            border-radius: 5px;

            cursor: pointer;

            margin-right: 10px;

        }

        .tab-button.active {

            background-color: #e3f2fd;

            border-color: #1a73e8;

        }

        .image-upload-container {

            display: none;

            margin-bottom: 10px;

        }

        .image-upload-container.active {

            display: flex;

            align-items: center;

        }

        .image-preview {

            max-width: 100px;

            max-height: 100px;

            margin-left: 10px;

            border: 1px solid #ddd;

            display: none;

        }

    </style>
</head>
<body>
    <h1>AI Tutor - Doubt Solver</h1>

    <div class="control-bar">
        <div class="tab-buttons">
            <button id="text-only-tab" class="tab-button active" type="button">Text Only</button>
            <button id="image-text-tab" class="tab-button" type="button">Image + Text</button>
        </div>
        <!-- New Chat button -->
        <form method="post" action="/new">
            <button type="submit">New Chat</button>
        </form>
    </div>
    
    <div class="chat-container">
        {% for message in chat_history %}
            <div class="message {{ message.role }}">
                <pre>{{ message.content }}</pre>
            </div>
        {% endfor %}
    </div>
    
    <form id="input-form" class="input-form" method="post" enctype="multipart/form-data">
        <div id="image-upload-container" class="image-upload-container">
            <label for="image-upload" class="file-upload-label">Upload Image</label>
            <input id="image-upload" type="file" name="image" accept="image/*">
            <span id="file-name" class="file-name"></span>
            <img id="image-preview" class="image-preview" src="#" alt="Preview">
        </div>
        <input type="text" name="user_input" placeholder="Type your message..." required>
        <button type="submit">Send</button>
    </form>
    
    <script>

        // Auto-scroll to bottom of chat container

        const chatContainer = document.querySelector('.chat-container');

        chatContainer.scrollTop = chatContainer.scrollHeight;

        

        // Tab buttons functionality

        const textOnlyTab = document.getElementById('text-only-tab');

        const imageTextTab = document.getElementById('image-text-tab');

        const imageUploadContainer = document.getElementById('image-upload-container');

        const inputForm = document.getElementById('input-form');

        

        textOnlyTab.addEventListener('click', () => {

            textOnlyTab.classList.add('active');

            imageTextTab.classList.remove('active');

            imageUploadContainer.classList.remove('active');

            // Reset file input when switching to text-only

            document.getElementById('image-upload').value = '';

            document.getElementById('file-name').textContent = '';

            document.getElementById('image-preview').style.display = 'none';

        });

        

        imageTextTab.addEventListener('click', () => {

            imageTextTab.classList.add('active');

            textOnlyTab.classList.remove('active');

            imageUploadContainer.classList.add('active');

        });

        

        // Handle file selection and preview

        const imageUpload = document.getElementById('image-upload');

        const fileName = document.getElementById('file-name');

        const imagePreview = document.getElementById('image-preview');

        

        imageUpload.addEventListener('change', (e) => {

            if (e.target.files.length > 0) {

                const file = e.target.files[0];

                fileName.textContent = file.name;

                

                // Create image preview

                const reader = new FileReader();

                reader.onload = function(e) {

                    imagePreview.src = e.target.result;

                    imagePreview.style.display = 'block';

                }

                reader.readAsDataURL(file);

            } else {

                fileName.textContent = '';

                imagePreview.style.display = 'none';

            }

        });

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