{% extends "base.html" %}

{% block title %}Parse Document - NoteParser{% endblock %}

{% block content %}
<div class="d-flex justify-content-between align-items-center mb-4">
    <h1><i class="fas fa-file-upload"></i> Parse Document</h1>
    <a href="/" class="btn btn-outline-secondary">
        <i class="fas fa-arrow-left"></i> Back to Dashboard
    </a>
</div>

<div class="row">
    <div class="col-md-8">
        <div class="card">
            <div class="card-header">
                <i class="fas fa-upload"></i> Upload Document
            </div>
            <div class="card-body">
                <form id="parseForm" enctype="multipart/form-data">
                    <!-- File Upload Area -->
                    <div class="mb-4">
                        <label for="fileInput" class="form-label fw-bold">Select Document</label>
                        <div class="upload-area border-2 border-dashed rounded-3 p-4 text-center" 
                             id="uploadArea"
                             ondragover="handleDragOver(event)"
                             ondrop="handleDrop(event)"
                             ondragleave="handleDragLeave(event)">
                            <div id="uploadPrompt">
                                <i class="fas fa-cloud-upload-alt fa-3x text-muted mb-3"></i>
                                <h5>Drag and drop your file here</h5>
                                <p class="text-muted">or click to browse</p>
                                <input type="file" id="fileInput" name="file" class="d-none" 
                                       accept=".pdf,.docx,.doc,.pptx,.ppt,.xlsx,.xls,.md,.txt,.jpg,.jpeg,.png,.gif,.bmp,.tiff,.mp3,.wav,.m4a,.mp4,.mov,.avi"
                                       onchange="handleFileSelect(event)">
                                <button type="button" class="btn btn-outline-primary" 
                                        onclick="document.getElementById('fileInput').click()">
                                    Choose File
                                </button>
                            </div>
                            <div id="filePreview" class="d-none">
                                <div class="d-flex align-items-center justify-content-center">
                                    <div class="file-icon me-3">
                                        <i id="fileIcon" class="fas fa-file fa-2x"></i>
                                    </div>
                                    <div class="flex-grow-1 text-start">
                                        <div class="fw-bold" id="fileName"></div>
                                        <small class="text-muted" id="fileSize"></small>
                                    </div>
                                    <button type="button" class="btn btn-sm btn-outline-danger" 
                                            onclick="clearFile()">
                                        <i class="fas fa-times"></i>
                                    </button>
                                </div>
                            </div>
                        </div>
                    </div>

                    <!-- Output Format Selection -->
                    <div class="mb-4">
                        <label class="form-label fw-bold">Output Formats</label>
                        <div class="row">
                            <div class="col-md-6">
                                <div class="form-check">
                                    <input class="form-check-input" type="checkbox" name="formats" 
                                           value="markdown" id="formatMarkdown" checked>
                                    <label class="form-check-label" for="formatMarkdown">
                                        <i class="fab fa-markdown text-primary"></i> Markdown
                                        <small class="text-muted d-block">Standard markdown format</small>
                                    </label>
                                </div>
                            </div>
                            <div class="col-md-6">
                                <div class="form-check">
                                    <input class="form-check-input" type="checkbox" name="formats" 
                                           value="latex" id="formatLatex">
                                    <label class="form-check-label" for="formatLatex">
                                        <i class="fas fa-file-code text-success"></i> LaTeX
                                        <small class="text-muted d-block">Academic document format</small>
                                    </label>
                                </div>
                            </div>
                        </div>
                    </div>

                    <!-- Processing Options -->
                    <div class="mb-4">
                        <label class="form-label fw-bold">Processing Options</label>
                        <div class="row">
                            <div class="col-md-6">
                                <div class="form-check">
                                    <input class="form-check-input" type="checkbox" name="extract_metadata" 
                                           id="extractMetadata" checked>
                                    <label class="form-check-label" for="extractMetadata">
                                        Extract Metadata
                                        <small class="text-muted d-block">Course, topic, author info</small>
                                    </label>
                                </div>
                            </div>
                            <div class="col-md-6">
                                <div class="form-check">
                                    <input class="form-check-input" type="checkbox" name="preserve_formatting" 
                                           id="preserveFormatting" checked>
                                    <label class="form-check-label" for="preserveFormatting">
                                        Preserve Academic Formatting
                                        <small class="text-muted d-block">Equations, theorems, citations</small>
                                    </label>
                                </div>
                            </div>
                        </div>
                    </div>

                    <!-- Course Information (Optional) -->
                    <div class="row mb-4">
                        <div class="col-md-6">
                            <label for="courseCode" class="form-label">Course Code (Optional)</label>
                            <input type="text" class="form-control" id="courseCode" name="course_code"
                                   placeholder="e.g., CS101, MATH201" pattern="[A-Z]{2,4}[0-9]{3,4}">
                            <small class="text-muted">Will be auto-detected if not specified</small>
                        </div>
                        <div class="col-md-6">
                            <label for="topic" class="form-label">Topic (Optional)</label>
                            <input type="text" class="form-control" id="topic" name="topic"
                                   placeholder="e.g., Linear Algebra, Data Structures">
                        </div>
                    </div>

                    <!-- Submit Button -->
                    <div class="d-grid">
                        <button type="submit" class="btn btn-primary btn-lg" id="parseButton">
                            <i class="fas fa-cogs"></i> Parse Document
                        </button>
                    </div>
                </form>
            </div>
        </div>

        <!-- Results Section -->
        <div id="resultsSection" class="card mt-4" style="display: none;">
            <div class="card-header d-flex justify-content-between">
                <span><i class="fas fa-check-circle text-success"></i> Parsing Results</span>
                <button type="button" class="btn-close" onclick="clearResults()"></button>
            </div>
            <div class="card-body">
                <div id="resultsContent"></div>
            </div>
        </div>
    </div>

    <!-- Sidebar -->
    <div class="col-md-4">
        <!-- Supported Formats -->
        <div class="card mb-4">
            <div class="card-header">
                <i class="fas fa-file-alt"></i> Supported Formats
            </div>
            <div class="card-body">
                <div class="row g-2">
                    {% for format in supported_formats %}
                    <div class="col-6">
                        <span class="badge bg-light text-dark">{{ format }}</span>
                    </div>
                    {% endfor %}
                </div>
            </div>
        </div>

        <!-- Active Plugins -->
        {% if plugins %}
        <div class="card mb-4">
            <div class="card-header">
                <i class="fas fa-plug"></i> Active Plugins
            </div>
            <div class="card-body">
                {% for plugin in plugins %}
                    {% if plugin.enabled %}
                    <div class="d-flex align-items-center mb-2">
                        <i class="fas fa-check-circle text-success me-2"></i>
                        <div>
                            <div class="fw-bold">{{ plugin.name }}</div>
                            <small class="text-muted">{{ plugin.description }}</small>
                        </div>
                    </div>
                    {% endif %}
                {% endfor %}
            </div>
        </div>
        {% endif %}

        <!-- Tips -->
        <div class="card">
            <div class="card-header">
                <i class="fas fa-lightbulb"></i> Tips
            </div>
            <div class="card-body">
                <ul class="list-unstyled">
                    <li class="mb-2">
                        <i class="fas fa-check text-success me-2"></i>
                        <small>Name files with course codes (e.g., CS101_Lecture1.pdf)</small>
                    </li>
                    <li class="mb-2">
                        <i class="fas fa-check text-success me-2"></i>
                        <small>Use high-quality scans for better OCR results</small>
                    </li>
                    <li class="mb-2">
                        <i class="fas fa-check text-success me-2"></i>
                        <small>LaTeX format is best for math-heavy documents</small>
                    </li>
                    <li>
                        <i class="fas fa-check text-success me-2"></i>
                        <small>Audio/video files will be transcribed automatically</small>
                    </li>
                </ul>
            </div>
        </div>
    </div>
</div>

<!-- Loading Modal -->
<div class="modal fade" id="loadingModal" tabindex="-1" data-bs-backdrop="static" data-bs-keyboard="false">
    <div class="modal-dialog modal-dialog-centered">
        <div class="modal-content">
            <div class="modal-body text-center p-4">
                <div class="spinner-border text-primary mb-3" role="status" style="width: 3rem; height: 3rem;">
                    <span class="visually-hidden">Loading...</span>
                </div>
                <h5>Processing Document...</h5>
                <p class="text-muted mb-0">This may take a few moments depending on the file size and format.</p>
            </div>
        </div>
    </div>
</div>

{% endblock %}

{% block extra_js %}
<script>
let selectedFile = null;
let loadingModal = null;

document.addEventListener('DOMContentLoaded', function() {
    loadingModal = new bootstrap.Modal(document.getElementById('loadingModal'));
    
    // Form submission
    document.getElementById('parseForm').addEventListener('submit', handleFormSubmit);
    
    // Click on upload area
    document.getElementById('uploadArea').addEventListener('click', function() {
        document.getElementById('fileInput').click();
    });
});

function handleDragOver(event) {
    event.preventDefault();
    event.stopPropagation();
    document.getElementById('uploadArea').classList.add('border-primary', 'bg-light');
}

function handleDragLeave(event) {
    event.preventDefault();
    event.stopPropagation();
    document.getElementById('uploadArea').classList.remove('border-primary', 'bg-light');
}

function handleDrop(event) {
    event.preventDefault();
    event.stopPropagation();
    document.getElementById('uploadArea').classList.remove('border-primary', 'bg-light');
    
    const files = event.dataTransfer.files;
    if (files.length > 0) {
        handleFile(files[0]);
    }
}

function handleFileSelect(event) {
    const file = event.target.files[0];
    if (file) {
        handleFile(file);
    }
}

function handleFile(file) {
    selectedFile = file;
    
    // Show file preview
    document.getElementById('uploadPrompt').classList.add('d-none');
    document.getElementById('filePreview').classList.remove('d-none');
    
    // Set file info
    document.getElementById('fileName').textContent = file.name;
    document.getElementById('fileSize').textContent = formatFileSize(file.size);
    
    // Set appropriate icon
    const icon = getFileIcon(getFileExtension(file.name));
    document.getElementById('fileIcon').className = icon;
}

function clearFile() {
    selectedFile = null;
    document.getElementById('fileInput').value = '';
    document.getElementById('uploadPrompt').classList.remove('d-none');
    document.getElementById('filePreview').classList.add('d-none');
}

function getFileExtension(filename) {
    return '.' + filename.split('.').pop().toLowerCase();
}

function getFileIcon(extension) {
    const icons = {
        '.pdf': 'fas fa-file-pdf text-danger fa-2x',
        '.docx': 'fas fa-file-word text-primary fa-2x',
        '.doc': 'fas fa-file-word text-primary fa-2x',
        '.pptx': 'fas fa-file-powerpoint text-warning fa-2x',
        '.ppt': 'fas fa-file-powerpoint text-warning fa-2x',
        '.xlsx': 'fas fa-file-excel text-success fa-2x',
        '.xls': 'fas fa-file-excel text-success fa-2x',
        '.md': 'fab fa-markdown text-primary fa-2x',
        '.txt': 'fas fa-file-alt text-secondary fa-2x',
        '.jpg': 'fas fa-file-image text-info fa-2x',
        '.jpeg': 'fas fa-file-image text-info fa-2x',
        '.png': 'fas fa-file-image text-info fa-2x',
        '.mp3': 'fas fa-file-audio text-purple fa-2x',
        '.wav': 'fas fa-file-audio text-purple fa-2x',
        '.mp4': 'fas fa-file-video text-danger fa-2x',
        '.mov': 'fas fa-file-video text-danger fa-2x'
    };
    
    return icons[extension] || 'fas fa-file text-muted fa-2x';
}

function formatFileSize(bytes) {
    if (bytes === 0) return '0 Bytes';
    const k = 1024;
    const sizes = ['Bytes', 'KB', 'MB', 'GB'];
    const i = Math.floor(Math.log(bytes) / Math.log(k));
    return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
}

function handleFormSubmit(event) {
    event.preventDefault();
    
    if (!selectedFile) {
        showAlert('Please select a file to parse.', 'warning');
        return;
    }
    
    // Validate formats
    const formats = Array.from(document.querySelectorAll('input[name="formats"]:checked'))
                          .map(cb => cb.value);
    
    if (formats.length === 0) {
        showAlert('Please select at least one output format.', 'warning');
        return;
    }
    
    // Show loading modal
    loadingModal.show();
    
    // Prepare form data
    const formData = new FormData();
    formData.append('file', selectedFile);
    
    formats.forEach(format => {
        formData.append('formats', format);
    });
    
    if (document.getElementById('extractMetadata').checked) {
        formData.append('extract_metadata', 'true');
    }
    
    if (document.getElementById('preserveFormatting').checked) {
        formData.append('preserve_formatting', 'true');
    }
    
    const courseCode = document.getElementById('courseCode').value.trim();
    if (courseCode) {
        formData.append('course_code', courseCode);
    }
    
    const topic = document.getElementById('topic').value.trim();
    if (topic) {
        formData.append('topic', topic);
    }
    
    // Submit to server
    fetch('/parse', {
        method: 'POST',
        body: formData
    })
    .then(response => response.json())
    .then(data => {
        loadingModal.hide();
        
        if (data.success) {
            displayResults(data);
            showAlert('Document parsed successfully!', 'success');
        } else {
            showAlert(`Error: ${data.error}`, 'danger');
        }
    })
    .catch(error => {
        loadingModal.hide();
        showAlert(`Network error: ${error.message}`, 'danger');
    });
}

function displayResults(data) {
    const resultsSection = document.getElementById('resultsSection');
    const resultsContent = document.getElementById('resultsContent');
    
    let html = `
        <div class="mb-3">
            <h5><i class="fas fa-file"></i> ${selectedFile.name}</h5>
            <p class="text-muted">Parsed to ${Object.keys(data.results).join(', ')} format(s)</p>
        </div>
    `;
    
    // Display results for each format
    for (const [format, result] of Object.entries(data.results)) {
        html += `
            <div class="card mb-3">
                <div class="card-header d-flex justify-content-between">
                    <span>
                        <i class="fas fa-${format === 'markdown' ? 'fab fa-markdown' : 'file-code'}"></i> 
                        ${format.charAt(0).toUpperCase() + format.slice(1)} Output
                    </span>
                    <button class="btn btn-sm btn-outline-primary" onclick="downloadResult('${format}', \`${btoa(result.content)}\`)">
                        <i class="fas fa-download"></i> Download
                    </button>
                </div>
                <div class="card-body">
                    <div class="mb-3">
                        <strong>Content Preview:</strong>
                        <pre class="bg-light p-3 mt-2" style="max-height: 200px; overflow-y: auto;"><code>${escapeHtml(result.content.substring(0, 500))}${result.content.length > 500 ? '...' : ''}</code></pre>
                    </div>
                    
                    ${result.metadata ? `
                    <div>
                        <strong>Metadata:</strong>
                        <ul class="list-unstyled mt-2">
                            ${Object.entries(result.metadata).map(([key, value]) => 
                                `<li><strong>${key}:</strong> ${value}</li>`
                            ).join('')}
                        </ul>
                    </div>
                    ` : ''}
                </div>
            </div>
        `;
    }
    
    // Add sync option
    html += `
        <div class="d-flex gap-2 mt-4">
            <button class="btn btn-success" onclick="syncResults('${data.file_path}')">
                <i class="fas fa-sync"></i> Sync to Repository
            </button>
            <button class="btn btn-outline-secondary" onclick="clearResults()">
                <i class="fas fa-times"></i> Clear Results
            </button>
        </div>
    `;
    
    resultsContent.innerHTML = html;
    resultsSection.style.display = 'block';
    
    // Scroll to results
    resultsSection.scrollIntoView({ behavior: 'smooth' });
}

function downloadResult(format, encodedContent) {
    const content = atob(encodedContent);
    const extension = format === 'markdown' ? 'md' : 'tex';
    const filename = `${selectedFile.name.split('.')[0]}.${extension}`;
    
    const blob = new Blob([content], { type: 'text/plain' });
    const url = URL.createObjectURL(blob);
    
    const a = document.createElement('a');
    a.href = url;
    a.download = filename;
    document.body.appendChild(a);
    a.click();
    document.body.removeChild(a);
    URL.revokeObjectURL(url);
}

function syncResults(filePath) {
    // This would integrate with the sync functionality
    showAlert('Sync functionality coming soon!', 'info');
}

function clearResults() {
    document.getElementById('resultsSection').style.display = 'none';
}

function escapeHtml(text) {
    const div = document.createElement('div');
    div.textContent = text;
    return div.innerHTML;
}
</script>
{% endblock %}