{% extends 'base.html' %}
{% load static %}

{% block title %}Data Analyzer Agent - NetCop AI Hub{% endblock %}

{% block extra_css %}
<!-- Optimized Font Loading -->
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap" rel="stylesheet">

<!-- External Stylesheets -->
<link rel="stylesheet" href="{% static 'css/themes.css' %}">
<link rel="stylesheet" href="{% static 'css/agent-base.css' %}">

<!-- Data Analyzer Specific Utilities -->
<script>
// Data Analyzer - Self-contained utilities (no shared dependencies)
const DataAnalyzerUtils = {
    /**
     * Update wallet balance display - Data Analyzer specific
     */
    updateWalletBalance(newBalance) {
        // Update header balance (anchor tag with emoji)
        const headerBalance = document.querySelector('a[data-wallet-balance]');
        if (headerBalance) {
            headerBalance.textContent = `💰 ${newBalance.toFixed(2)} AED`;
        }
        
        // Update page balance (div without emoji)
        const pageBalance = document.querySelector('div[data-wallet-balance]');
        if (pageBalance) {
            pageBalance.textContent = `${newBalance.toFixed(2)} AED`;
        }
        
        window.currentWalletBalance = newBalance;
    },

    /**
     * Show toast notification with duplicate prevention
     */
    showToast(message, type = 'info') {
        // Prevent duplicate toasts
        const existingToast = document.querySelector('.data-analyzer-toast');
        if (existingToast) {
            existingToast.remove();
        }

        const toast = document.createElement('div');
        toast.className = 'data-analyzer-toast';
        toast.style.cssText = `
            position: fixed;
            top: 16px;
            right: 16px;
            padding: 8px 12px;
            border-radius: 4px;
            color: white;
            font-size: 13px;
            z-index: 1000;
            max-width: 300px;
            font-weight: 500;
            ${type === 'success' ? 'background: #10b981;' : 'background: #ef4444;'}
        `;
        toast.textContent = message;
        document.body.appendChild(toast);
        
        setTimeout(() => {
            if (toast.parentNode) {
                toast.remove();
            }
        }, 2000);
    },

    /**
     * Generate text for copy/download functionality
     */
    generateTextForExport(contentElementId) {
        const content = document.getElementById(contentElementId);
        if (content) {
            return content.innerText || content.textContent || '';
        }
        return 'No content available';
    },

    /**
     * Copy content to clipboard
     */
    copyToClipboard(text, successMessage = 'Content copied to clipboard!') {
        navigator.clipboard.writeText(text).then(() => {
            this.showToast(`📋 ${successMessage}`, 'success');
        }).catch(() => {
            this.showToast('Failed to copy content', 'error');
        });
    },

    /**
     * Download content as text file
     */
    downloadAsFile(text, filename, successMessage = 'File downloaded!') {
        const blob = new Blob([text], { type: 'text/plain' });
        const url = URL.createObjectURL(blob);
        const a = document.createElement('a');
        a.href = url;
        a.download = filename || `content-${Date.now()}.txt`;
        a.click();
        URL.revokeObjectURL(url);
        this.showToast(`💾 ${successMessage}`, 'success');
    }
};

// For backward compatibility, create AgentUtils alias
const AgentUtils = DataAnalyzerUtils;
</script>

<style>
/* Data Analyzer specific styles only */
.file-upload-zone {
    border: 2px dashed var(--agent-border);
    border-radius: var(--radius);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition);
    background: var(--agent-card-bg);
    cursor: pointer;
    margin-bottom: var(--space-lg);
}

.file-upload-zone.dragover,
.file-upload-zone:hover {
    border-color: var(--agent-primary);
    background: var(--hover-color);
}

.file-preview {
    background: var(--agent-card-bg);
    border: 1px solid var(--agent-border);
    border-radius: var(--radius);
    padding: var(--space-md);
    margin-top: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.radio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

.radio-option {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    border: 1px solid var(--agent-border);
    border-radius: var(--radius);
    cursor: pointer;
    background: white;
    transition: all var(--transition);
    min-height: 60px;
}

.radio-option.selected {
    border-color: var(--agent-primary);
    background: var(--agent-card-bg);
}

.radio-option:hover {
    border-color: var(--agent-primary);
    background: var(--hover-color);
}

.radio-option input[type="radio"] {
    margin: 0;
}

.processing-status {
    display: none;
    text-align: center;
    padding: var(--space-lg);
    margin: var(--space-lg) 0;
    background: var(--agent-card-bg);
    border: 1px solid var(--agent-border);
    border-radius: var(--radius);
}

.results-card {
    display: none;
    margin-top: var(--space-lg);
}

/* Ensure grid layout works */
div.agent-page div.agent-container {
    display: grid !important;
    grid-template-columns: 1fr 350px !important;
    gap: 24px !important;
    max-width: 1280px !important;
    margin: 0 auto !important;
    align-items: start !important;
}

@media (max-width: 768px) {
    div.agent-page div.agent-container {
        grid-template-columns: 1fr !important;
    }
}
</style>
{% endblock %}

{% block content %}
<div class="agent-page theme-professional">
    <div class="agent-container">
        <!-- Messages -->
        {% if messages %}
            {% for message in messages %}
                <div class="{% if message.tags == 'error' %}error-message{% else %}success-message{% endif %}" style="grid-column: 1 / -1;">
                    {{ message }}
                </div>
            {% endfor %}
        {% endif %}
        
        <!-- Main Content -->
        <div>
                <form method="POST" id="dataAnalyzerForm">
                    {% csrf_token %}
                    
                    <!-- File Upload Section -->
                    <div class="card">
                        <h3 class="section-title">📁 Upload Your Data File</h3>
                        
                        <div class="file-upload-zone" id="fileUploadZone" onclick="document.getElementById('fileInput').click()">
                            <div style="font-size: 48px; margin-bottom: 12px;">📊</div>
                            <div style="font-size: var(--text-lg); font-weight: 600; color: var(--text-color); margin-bottom: 8px;">
                                Choose or drag your data file here
                            </div>
                            <div style="font-size: var(--text-base); color: var(--accent-color);">
                                Supports PDF, CSV, Excel files (up to 10MB)
                            </div>
                        </div>
                        
                        <input
                            type="file"
                            id="fileInput"
                            accept=".pdf,.csv,.xlsx,.xls"
                            style="display: none;"
                        />
                        
                        <div id="filePreview" class="file-preview" style="display: none;">
                            <div style="font-size: 24px;">📄</div>
                            <div style="flex: 1;">
                                <div style="font-weight: 600; color: var(--text-primary);" id="fileName"></div>
                                <div style="font-size: 14px; color: var(--text-secondary);" id="fileSize"></div>
                            </div>
                            <button type="button" onclick="removeFile()" class="btn btn-secondary" style="padding: 4px 8px; font-size: 12px;">
                                Remove
                            </button>
                        </div>
                    </div>
                    
                    <!-- Analysis Type Selection -->
                    <div class="card">
                        <h3 class="section-title">🔍 Analysis Type</h3>
                        
                        <div class="radio-grid">
                            <label class="radio-option selected" data-value="summary">
                                <input type="radio" name="analysisType" value="summary" checked />
                                <div style="font-size: 20px;">📋</div>
                                <div>
                                    <div style="font-weight: 600; margin-bottom: 4px; font-size: var(--text-lg);">
                                        Summary Analysis
                                    </div>
                                    <div style="font-size: var(--text-sm); color: var(--accent-color);">
                                        Quick overview and key insights
                                    </div>
                                </div>
                            </label>
                            
                            <label class="radio-option" data-value="detailed">
                                <input type="radio" name="analysisType" value="detailed" />
                                <div style="font-size: 20px;">📈</div>
                                <div>
                                    <div style="font-weight: 600; margin-bottom: 4px; font-size: var(--text-lg);">
                                        Detailed Analysis
                                    </div>
                                    <div style="font-size: var(--text-sm); color: var(--accent-color);">
                                        Comprehensive statistical analysis
                                    </div>
                                </div>
                            </label>
                            
                            <label class="radio-option" data-value="statistical">
                                <input type="radio" name="analysisType" value="statistical" />
                                <div style="font-size: 20px;">📊</div>
                                <div>
                                    <div style="font-weight: 600; margin-bottom: 4px; font-size: var(--text-lg);">
                                        Statistical Analysis
                                    </div>
                                    <div style="font-size: var(--text-sm); color: var(--accent-color);">
                                        Advanced statistics and trends
                                    </div>
                                </div>
                            </label>
                        </div>
                    </div>
                </form>
            </div>
            <!-- Wallet Sidebar -->
        <div class="wallet-section">
            <div class="card">
                <h3 class="section-title">💳 Your Wallet</h3>
                
                <div class="wallet-balance" data-wallet-balance>
                    {% if user.is_authenticated %}
                        {{ user.wallet_balance|floatformat:2 }} AED
                    {% else %}
                        0.00 AED
                    {% endif %}
                </div>
                <div class="balance-label">Available Balance</div>
                
                {% if user.is_authenticated %}
                    {% if user.wallet_balance >= 5.00 %}
                        <button type="submit" form="dataAnalyzerForm" class="btn btn-primary process-btn" id="processButton">
                            📊 Analyze Data (5.00 AED)
                        </button>
                    {% else %}
                        <div class="insufficient-balance">
                            Insufficient balance! You need 5.00 AED.
                        </div>
                        <a href="{% url 'core:wallet' %}" class="btn btn-primary process-btn" style="text-decoration: none;">
                            💰 Top Up Wallet
                        </a>
                    {% endif %}
                {% else %}
                    <a href="{% url 'authentication:login' %}" class="btn btn-primary process-btn" style="text-decoration: none;">
                        🔑 Login to Continue
                    </a>
                {% endif %}
            </div>
            
            <div class="usage-info">
                <h4>💡 How it works</h4>
                <ul>
                    <li>Upload your data file (PDF, CSV, Excel)</li>
                    <li>Choose analysis type</li>
                    <li>Get comprehensive insights</li>
                    <li>Download detailed report</li>
                </ul>
            </div>
        </div>
            <!-- Processing Status -->
            <div id="processingStatus" class="processing-status">
                <div class="status-icon">📊</div>
                <div style="font-weight: 600; color: var(--primary-color);">Analyzing Your Data...</div>
                <div style="font-size: 14px; color: var(--text-secondary); margin-top: 8px;" id="statusText">Processing data file...</div>
            </div>
            
            <!-- Results -->
            <div id="analysisResults" class="results-card">
                <div class="results-header">
                    <div style="font-size: 24px;">✅</div>
                    <h3 style="font-size: 20px; font-weight: 600; color: var(--text-primary); margin: 0;">Data Analysis Complete</h3>
                    <div style="background: var(--primary-color); color: white; padding: 6px 12px; border-radius: 6px; font-size: 14px; font-weight: 600; margin-left: auto;">✅ Complete</div>
                </div>
                
                <div class="results-content" id="analysisContent">
                    <!-- Analysis results will be displayed here -->
                </div>
                
                <div class="action-buttons">
                    <button onclick="copyAnalysisReport()" class="btn btn-primary">📋 Copy Analysis</button>
                    <button onclick="downloadAnalysisReport()" class="btn btn-secondary">💾 Download Report</button>
                </div>
            </div>
        </div>
        
        
    </div>
</div>
{% endblock %}

{% block extra_js %}
<script>
    let selectedFile = null;
    
    // File upload handling
    const fileInput = document.getElementById('fileInput');
    const fileUploadZone = document.getElementById('fileUploadZone');
    const filePreview = document.getElementById('filePreview');
    
    // Handle file input change
    fileInput.addEventListener('change', function(e) {
        if (e.target.files.length > 0) {
            selectedFile = e.target.files[0];
            showFilePreview(selectedFile);
        }
    });
    
    // Drag and drop functionality
    fileUploadZone.addEventListener('dragover', function(e) {
        e.preventDefault();
        fileUploadZone.classList.add('dragover');
    });
    
    fileUploadZone.addEventListener('dragleave', function(e) {
        e.preventDefault();
        fileUploadZone.classList.remove('dragover');
    });
    
    fileUploadZone.addEventListener('drop', function(e) {
        e.preventDefault();
        fileUploadZone.classList.remove('dragover');
        
        const files = e.dataTransfer.files;
        if (files.length > 0) {
            const file = files[0];
            if (isValidFile(file)) {
                selectedFile = file;
                fileInput.files = files;
                showFilePreview(file);
            } else {
                AgentUtils.showToast('Please select a valid data file (PDF, CSV, Excel)', 'error');
            }
        }
    });
    
    // Show file preview
    function showFilePreview(file) {
        document.getElementById('fileName').textContent = file.name;
        document.getElementById('fileSize').textContent = formatFileSize(file.size);
        filePreview.style.display = 'flex';
        fileUploadZone.style.display = 'none';
    }
    
    // Remove file
    function removeFile() {
        selectedFile = null;
        fileInput.value = '';
        filePreview.style.display = 'none';
        fileUploadZone.style.display = 'block';
    }
    
    // Validate file type
    function isValidFile(file) {
        const validTypes = [
            'application/pdf',
            'text/csv',
            'application/vnd.ms-excel',
            'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
        ];
        return validTypes.includes(file.type) || file.name.match(/\.(pdf|csv|xlsx|xls)$/i);
    }
    
    // Format file size
    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];
    }
    
    // Radio button handling
    document.querySelectorAll('.radio-option').forEach(option => {
        option.addEventListener('click', function() {
            document.querySelectorAll('.radio-option').forEach(opt => opt.classList.remove('selected'));
            this.classList.add('selected');
            this.querySelector('input[type="radio"]').checked = true;
        });
    });
    
    // Handle form submission
    document.getElementById('dataAnalyzerForm').addEventListener('submit', function(e) {
        e.preventDefault();
        if (!selectedFile) {
            AgentUtils.showToast('Please select a data file', 'error');
            return;
        }
        
        // Check user authentication
        {% if not user.is_authenticated %}
        window.location.href = "{% url 'authentication:login' %}";
        return;
        {% endif %}
        
        // Check wallet balance
        const balance = {{ user.wallet_balance|default:0 }};
        if (balance < 5.00) {
            AgentUtils.showToast('Insufficient balance! You need 5.00 AED.', 'error');
            setTimeout(() => {
                window.location.href = "{% url 'core:wallet' %}";
            }, 2000);
            return;
        }
        
        // Show processing status
        document.getElementById('processingStatus').style.display = 'block';
        document.getElementById('processButton').disabled = true;
        document.getElementById('processButton').innerHTML = '⏳ Processing...';
        document.getElementById('analysisResults').style.display = 'none';
        
        // Processing steps for user feedback
        const steps = [
            'Reading file structure...',
            'Extracting data patterns...',
            'Performing statistical analysis...',
            'Generating insights...',
            'Finalizing report...'
        ];
        
        let currentStep = 0;
        const stepInterval = setInterval(() => {
            if (currentStep < steps.length) {
                document.getElementById('statusText').textContent = steps[currentStep];
                currentStep++;
            } else {
                clearInterval(stepInterval);
            }
        }, 1000);

        // Submit form data to backend
        const formData = new FormData(this);
        if (selectedFile) {
            formData.append('file', selectedFile);
        }
        
        fetch(window.location.href, {
            method: 'POST',
            body: formData,
            headers: {
                'X-Requested-With': 'XMLHttpRequest'
            }
        })
        .then(response => response.json())
        .then(result => {
            clearInterval(stepInterval);
            if (result.success && result.request_id) {
                // Start polling for results
                pollForResults(result.request_id);
            } else {
                // Handle immediate response
                document.getElementById('processingStatus').style.display = 'none';
                document.getElementById('processButton').disabled = false;
                document.getElementById('processButton').innerHTML = '📊 Analyze Data (5.00 AED)';
                
                if (result.error) {
                    AgentUtils.showToast(`❌ ${result.error}`, 'error');
                } else {
                    displayResults(result);
                }
            }
        })
        .catch(error => {
            clearInterval(stepInterval);
            console.error('Error:', error);
            document.getElementById('processingStatus').style.display = 'none';
            document.getElementById('processButton').disabled = false;
            document.getElementById('processButton').innerHTML = '📊 Analyze Data (5.00 AED)';
            AgentUtils.showToast('❌ Network error - please try again', 'error');
        });
    });
    
    // Display analysis results with custom Data Analyzer formatting
    function displayResults(result) {
        const resultsContainer = document.getElementById('analysisResults');
        const contentElement = document.getElementById('analysisContent');
        
        if (!resultsContainer || !contentElement) {
            console.error('Results elements not found');
            return;
        }
        
        // Update wallet balance if provided
        if (result.wallet_balance !== undefined) {
            AgentUtils.updateWalletBalance(result.wallet_balance);
        }
        
        // Handle errors
        if (result.error) {
            AgentUtils.showToast(`❌ ${result.error}`, 'error');
            return;
        }
        
        // Extract content with priority: report_text > insights_summary > raw_response.analysis
        let content = '';
        
        if (result.report_text && typeof result.report_text === 'string') {
            content = result.report_text;
        } else if (result.insights_summary && typeof result.insights_summary === 'string') {
            content = result.insights_summary;
        } else if (result.raw_response && result.raw_response.analysis && typeof result.raw_response.analysis === 'string') {
            content = result.raw_response.analysis;
        } else {
            content = 'Data analysis completed successfully!';
        }
        
        // Parse markdown content to HTML
        const formattedContent = parseMarkdownToHTML(content);
        
        // Update content
        contentElement.innerHTML = formattedContent;
        
        // Show results
        resultsContainer.style.display = 'block';
        resultsContainer.scrollIntoView({ behavior: 'smooth' });
        
        // Show success message
        const successMessage = result.success ? '✅ Data analysis completed and payment processed!' : '✅ Data analysis completed!';
        AgentUtils.showToast(successMessage, 'success');
    }
    
    // Enhanced markdown parser for Data Analyzer results
    function parseMarkdownToHTML(markdown) {
        if (!markdown || typeof markdown !== 'string') {
            return '<p>No content available.</p>';
        }
        
        let html = markdown;
        
        // Convert headers (### Header, ## Header, # Header)
        html = html.replace(/^### (.*$)/gm, '<h3 style="font-size: 18px; font-weight: 600; color: var(--text-primary); margin: 20px 0 12px 0; border-bottom: 2px solid var(--success-green); padding-bottom: 8px;">$1</h3>');
        html = html.replace(/^## (.*$)/gm, '<h2 style="font-size: 20px; font-weight: 600; color: var(--text-primary); margin: 24px 0 16px 0; border-bottom: 2px solid var(--success-green); padding-bottom: 8px;">$1</h2>');
        html = html.replace(/^# (.*$)/gm, '<h1 style="font-size: 22px; font-weight: 600; color: var(--text-primary); margin: 28px 0 18px 0; border-bottom: 2px solid var(--success-green); padding-bottom: 10px;">$1</h1>');
        
        // Convert bold text (**text** or __text__)
        html = html.replace(/\*\*(.*?)\*\*/g, '<strong style="font-weight: 600; color: var(--text-primary);">$1</strong>');
        html = html.replace(/__(.*?)__/g, '<strong style="font-weight: 600; color: var(--text-primary);">$1</strong>');
        
        // Convert italic text (*text* or _text_)
        html = html.replace(/\*(.*?)\*/g, '<em style="font-style: italic; color: var(--text-secondary);">$1</em>');
        html = html.replace(/_(.*?)_/g, '<em style="font-style: italic; color: var(--text-secondary);">$1</em>');
        
        // Convert bullet points (- item or * item)
        html = html.replace(/^[\s]*[-\*]\s+(.*)$/gm, '<li style="margin: 8px 0; padding-left: 8px; color: var(--text-primary);">$1</li>');
        
        // Wrap consecutive list items in ul tags
        html = html.replace(/(<li[^>]*>.*?<\/li>\s*)+/gs, function(match) {
            return `<ul style="margin: 16px 0; padding-left: 20px; list-style-type: disc; color: var(--success-green);">${match}</ul>`;
        });
        
        // Convert numbered lists (1. item, 2. item)
        html = html.replace(/^\s*\d+\.\s+(.*)$/gm, '<li style="margin: 8px 0; padding-left: 8px; color: var(--text-primary);">$1</li>');
        
        // Wrap consecutive numbered list items in ol tags
        html = html.replace(/(<li[^>]*>.*?<\/li>\s*)+/gs, function(match) {
            if (match.includes('ul style')) return match; // Skip if already wrapped in ul
            return `<ol style="margin: 16px 0; padding-left: 20px; list-style-type: decimal; color: var(--success-green);">${match}</ol>`;
        });
        
        // Convert line breaks to paragraphs
        const paragraphs = html.split(/\n\s*\n/);
        html = paragraphs.map(p => {
            const trimmed = p.trim();
            if (trimmed === '') return '';
            
            // Skip if already wrapped in HTML tags
            if (trimmed.startsWith('<h') || trimmed.startsWith('<ul') || trimmed.startsWith('<ol') || trimmed.startsWith('<li')) {
                return trimmed;
            }
            
            return `<p style="margin: 12px 0; line-height: 1.6; color: var(--text-primary);">${trimmed}</p>`;
        }).filter(p => p !== '').join('');
        
        return html;
    }

    // Track polling and results to prevent duplicates
    let resultsDisplayed = false;
    let currentPollInterval = null;

    // Poll for results
    function pollForResults(requestId) {
        let pollCount = 0;
        const maxPolls = 60; // 60 seconds maximum for data analysis
        resultsDisplayed = false; // Reset flag
        
        // Clear any existing polling
        if (currentPollInterval) {
            clearInterval(currentPollInterval);
            currentPollInterval = null;
        }
        
        currentPollInterval = setInterval(() => {
            pollCount++;
            
            fetch(`/agents/data-analyzer/status/${requestId}/`)
                .then(response => {
                    if (!response.ok) {
                        throw new Error(`HTTP ${response.status}`);
                    }
                    return response.json();
                })
                .then(result => {
                    if (result.status === 'completed' || result.status === 'failed') {
                        // Stop polling immediately
                        clearInterval(currentPollInterval);
                        currentPollInterval = null;
                        
                        // Reset UI
                        document.getElementById('processingStatus').style.display = 'none';
                        document.getElementById('processButton').disabled = false;
                        document.getElementById('processButton').innerHTML = '📊 Analyze Data (5.00 AED)';
                        
                        // Display results only once
                        if (!resultsDisplayed) {
                            resultsDisplayed = true;
                            displayResults(result);
                        }
                    } else if (pollCount >= maxPolls) {
                        clearInterval(currentPollInterval);
                        currentPollInterval = null;
                        document.getElementById('processingStatus').style.display = 'none';
                        document.getElementById('processButton').disabled = false;
                        document.getElementById('processButton').innerHTML = '📊 Analyze Data (5.00 AED)';
                        AgentUtils.showToast('❌ Processing timeout - please try again', 'error');
                    }
                })
                .catch(error => {
                    console.error('Error polling results:', error);
                    clearInterval(currentPollInterval);
                    currentPollInterval = null;
                    document.getElementById('processingStatus').style.display = 'none';
                    document.getElementById('processButton').disabled = false;
                    document.getElementById('processButton').innerHTML = '📊 Analyze Data (5.00 AED)';
                    AgentUtils.showToast('❌ Network error during processing - please try again', 'error');
                });
        }, 1000);
    }
    
    
    
    function copyAnalysisReport() {
        const reportText = AgentUtils.generateTextForExport('analysisContent');
        AgentUtils.copyToClipboard(reportText, 'Analysis report copied to clipboard!');
    }
    
    function downloadAnalysisReport() {
        const reportText = AgentUtils.generateTextForExport('analysisContent');
        AgentUtils.downloadAsFile(reportText, `data-analysis-report-${Date.now()}.txt`, 'Analysis report downloaded!');
    }
    
</script>
{% endblock %}