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<!DOCTYPE html>
<html lang="fr">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Analyseur de CSV</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <style>
        .file-upload {
            border: 2px dashed #cbd5e0;
            transition: all 0.3s ease;
        }
        .file-upload:hover {
            border-color: #4f46e5;
            background-color: #f8fafc;
        }
        .file-upload.dragover {
            border-color: #4f46e5;
            background-color: #eef2ff;
        }
        .data-table {
            max-height: 400px;
            overflow-y: auto;
        }
        .fade-in {
            animation: fadeIn 0.5s ease-in-out;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
    </style>
</head>
<body class="bg-gray-50 min-h-screen">
    <div class="container mx-auto px-4 py-8">
        <!-- Header -->
        <header class="text-center mb-12">
            <h1 class="text-4xl font-bold text-indigo-700 mb-2">Analyseur de Fichiers CSV</h1>
            <p class="text-gray-600 max-w-2xl mx-auto">Importez votre fichier CSV et obtenez des analyses visuelles et statistiques en temps réel</p>
        </header>

        <!-- Upload Section -->
        <div class="max-w-3xl mx-auto bg-white rounded-xl shadow-md overflow-hidden p-6 mb-12 transition-all duration-300">
            <div 
                id="dropZone" 
                class="file-upload rounded-lg p-8 text-center cursor-pointer"
                ondragover="event.preventDefault(); this.classList.add('dragover')"
                ondragleave="this.classList.remove('dragover')"
                ondrop="event.preventDefault(); this.classList.remove('dragover'); handleDrop(event)"
            >
                <div class="flex flex-col items-center justify-center">
                    <div class="bg-indigo-100 p-4 rounded-full mb-4">
                        <i class="fas fa-file-csv text-indigo-600 text-3xl"></i>
                    </div>
                    <h3 class="text-lg font-medium text-gray-900 mb-2">Glissez-déposez votre fichier CSV ici</h3>
                    <p class="text-gray-500 mb-4">ou</p>
                    <label for="fileInput" class="bg-indigo-600 hover:bg-indigo-700 text-white font-medium py-2 px-6 rounded-md cursor-pointer transition duration-300">
                        Sélectionner un fichier
                    </label>
                    <input id="fileInput" type="file" accept=".csv" class="hidden" onchange="handleFileSelect(event)">
                </div>
            </div>
            <div id="fileInfo" class="mt-4 hidden">
                <div class="flex items-center bg-green-50 p-3 rounded-md">
                    <i class="fas fa-check-circle text-green-500 mr-2"></i>
                    <span id="fileName" class="text-green-800 font-medium"></span>
                    <button onclick="resetUpload()" class="ml-auto text-gray-500 hover:text-gray-700">
                        <i class="fas fa-times"></i>
                    </button>
                </div>
            </div>
        </div>

        <!-- Analysis Section (Hidden by default) -->
        <div id="analysisSection" class="hidden fade-in">
            <!-- Tabs -->
            <div class="border-b border-gray-200 mb-8">
                <nav class="-mb-px flex space-x-8">
                    <button id="overviewTab" class="tab-button border-b-2 border-indigo-500 text-indigo-600 px-4 py-3 text-sm font-medium" onclick="switchTab('overview')">
                        Vue d'ensemble
                    </button>
                    <button id="dataTab" class="tab-button border-b-2 border-transparent text-gray-500 hover:text-gray-700 hover:border-gray-300 px-4 py-3 text-sm font-medium" onclick="switchTab('data')">
                        Données brutes
                    </button>
                    <button id="statsTab" class="tab-button border-b-2 border-transparent text-gray-500 hover:text-gray-700 hover:border-gray-300 px-4 py-3 text-sm font-medium" onclick="switchTab('stats')">
                        Statistiques
                    </button>
                </nav>
            </div>

            <!-- Overview Tab Content -->
            <div id="overviewContent" class="tab-content">
                <div class="grid grid-cols-1 md:grid-cols-2 gap-6 mb-8">
                    <div class="bg-white p-6 rounded-xl shadow">
                        <h3 class="text-lg font-medium text-gray-900 mb-4">Distribution des données</h3>
                        <canvas id="distributionChart" height="250"></canvas>
                    </div>
                    <div class="bg-white p-6 rounded-xl shadow">
                        <h3 class="text-lg font-medium text-gray-900 mb-4">Relations entre variables</h3>
                        <canvas id="correlationChart" height="250"></canvas>
                    </div>
                </div>
                
                <div class="bg-white p-6 rounded-xl shadow mb-8">
                    <h3 class="text-lg font-medium text-gray-900 mb-4">Tendance temporelle</h3>
                    <canvas id="trendChart" height="300"></canvas>
                </div>
                
                <div class="grid grid-cols-1 md:grid-cols-3 gap-6">
                    <div class="bg-white p-6 rounded-xl shadow">
                        <h3 class="text-lg font-medium text-gray-900 mb-4">Valeurs extrêmes</h3>
                        <div id="outliersInfo" class="space-y-3"></div>
                    </div>
                    <div class="bg-white p-6 rounded-xl shadow">
                        <h3 class="text-lg font-medium text-gray-900 mb-4">Données manquantes</h3>
                        <div id="missingDataInfo" class="space-y-3"></div>
                    </div>
                    <div class="bg-white p-6 rounded-xl shadow">
                        <h3 class="text-lg font-medium text-gray-900 mb-4">Types de données</h3>
                        <div id="dataTypesInfo" class="space-y-3"></div>
                    </div>
                </div>
            </div>

            <!-- Data Tab Content -->
            <div id="dataContent" class="tab-content hidden">
                <div class="bg-white rounded-xl shadow overflow-hidden mb-8">
                    <div class="px-6 py-4 border-b border-gray-200">
                        <h3 class="text-lg font-medium text-gray-900">Données brutes</h3>
                    </div>
                    <div class="data-table">
                        <table id="dataTable" class="min-w-full divide-y divide-gray-200">
                            <thead class="bg-gray-50">
                                <tr id="tableHeader"></tr>
                            </thead>
                            <tbody class="bg-white divide-y divide-gray-200" id="tableBody"></tbody>
                        </table>
                    </div>
                </div>
            </div>

            <!-- Stats Tab Content -->
            <div id="statsContent" class="tab-content hidden">
                <div class="bg-white rounded-xl shadow overflow-hidden mb-8">
                    <div class="px-6 py-4 border-b border-gray-200">
                        <h3 class="text-lg font-medium text-gray-900">Statistiques descriptives</h3>
                    </div>
                    <div class="overflow-x-auto">
                        <table class="min-w-full divide-y divide-gray-200">
                            <thead class="bg-gray-50">
                                <tr>
                                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Colonne</th>
                                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Type</th>
                                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Moyenne</th>
                                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Médiane</th>
                                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Min</th>
                                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Max</th>
                                    <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Écart-type</th>
                                </tr>
                            </thead>
                            <tbody class="bg-white divide-y divide-gray-200" id="statsTableBody"></tbody>
                        </table>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <script>
        // Global variables
        let csvData = [];
        let headers = [];
        let charts = {};
        
        // Handle file selection
        function handleFileSelect(event) {
            const file = event.target.files[0];
            processFile(file);
        }
        
        // Handle file drop
        function handleDrop(event) {
            const file = event.dataTransfer.files[0];
            if (file && file.name.endsWith('.csv')) {
                processFile(file);
            } else {
                alert('Veuillez déposer un fichier CSV valide.');
            }
        }
        
        // Process the CSV file
        function processFile(file) {
            const reader = new FileReader();
            
            reader.onload = function(e) {
                const content = e.target.result;
                parseCSV(content);
                
                // Update UI
                document.getElementById('fileName').textContent = file.name;
                document.getElementById('fileInfo').classList.remove('hidden');
                
                // Show analysis section
                setTimeout(() => {
                    document.getElementById('analysisSection').classList.remove('hidden');
                    document.getElementById('analysisSection').style.opacity = '1';
                }, 300);
            };
            
            reader.readAsText(file);
        }
        
        // Parse CSV content
        function parseCSV(content) {
            const lines = content.split('\n');
            headers = lines[0].split(',').map(h => h.trim());
            
            csvData = [];
            for (let i = 1; i < lines.length; i++) {
                if (lines[i].trim() === '') continue;
                
                const values = lines[i].split(',');
                const row = {};
                
                for (let j = 0; j < headers.length; j++) {
                    row[headers[j]] = values[j] ? values[j].trim() : '';
                }
                
                csvData.push(row);
            }
            
            // Update UI with parsed data
            updateDataTable();
            updateStatsTable();
            createCharts();
            updateOverviewInfo();
        }
        
        // Update data table
        function updateDataTable() {
            const tableHeader = document.getElementById('tableHeader');
            const tableBody = document.getElementById('tableBody');
            
            // Clear existing content
            tableHeader.innerHTML = '';
            tableBody.innerHTML = '';
            
            // Add headers
            headers.forEach(header => {
                const th = document.createElement('th');
                th.className = 'px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider';
                th.textContent = header;
                tableHeader.appendChild(th);
            });
            
            // Add rows (limit to 100 for performance)
            const displayRows = csvData.slice(0, 100);
            displayRows.forEach(row => {
                const tr = document.createElement('tr');
                
                headers.forEach(header => {
                    const td = document.createElement('td');
                    td.className = 'px-6 py-4 whitespace-nowrap text-sm text-gray-500';
                    td.textContent = row[header] || '';
                    tr.appendChild(td);
                });
                
                tableBody.appendChild(tr);
            });
            
            // Show message if rows were truncated
            if (csvData.length > 100) {
                const tr = document.createElement('tr');
                const td = document.createElement('td');
                td.colSpan = headers.length;
                td.className = 'px-6 py-4 text-center text-sm text-gray-500 italic';
                td.textContent = `Affichage des 100 premières lignes sur ${csvData.length} au total...`;
                tr.appendChild(td);
                tableBody.appendChild(tr);
            }
        }
        
        // Update stats table
        function updateStatsTable() {
            const statsTableBody = document.getElementById('statsTableBody');
            statsTableBody.innerHTML = '';
            
            headers.forEach(header => {
                const columnData = csvData.map(row => {
                    const value = row[header];
                    return isNaN(value) ? null : parseFloat(value);
                }).filter(val => val !== null);
                
                if (columnData.length === 0) return;
                
                const mean = columnData.reduce((a, b) => a + b, 0) / columnData.length;
                const sorted = [...columnData].sort((a, b) => a - b);
                const median = sorted[Math.floor(sorted.length / 2)];
                const min = Math.min(...columnData);
                const max = Math.max(...columnData);
                const variance = columnData.reduce((a, b) => a + Math.pow(b - mean, 2), 0) / columnData.length;
                const stdDev = Math.sqrt(variance);
                
                const tr = document.createElement('tr');
                
                tr.innerHTML = `
                    <td class="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900">${header}</td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">Numérique</td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">${mean.toFixed(2)}</td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">${median.toFixed(2)}</td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">${min.toFixed(2)}</td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">${max.toFixed(2)}</td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">${stdDev.toFixed(2)}</td>
                `;
                
                statsTableBody.appendChild(tr);
            });
        }
        
        // Create charts
        function createCharts() {
            // Destroy existing charts
            Object.values(charts).forEach(chart => chart.destroy());
            
            // Sample data for charts (in a real app, you'd use actual data from csvData)
            const numericColumns = headers.filter(header => {
                const sampleValue = csvData[0][header];
                return !isNaN(parseFloat(sampleValue));
            });
            
            if (numericColumns.length === 0) return;
            
            // Distribution Chart
            const distributionCtx = document.getElementById('distributionChart').getContext('2d');
            charts.distribution = new Chart(distributionCtx, {
                type: 'bar',
                data: {
                    labels: numericColumns.slice(0, 5),
                    datasets: [{
                        label: 'Distribution',
                        data: numericColumns.slice(0, 5).map(col => {
                            const values = csvData.map(row => parseFloat(row[col])).filter(v => !isNaN(v));
                            return values.reduce((a, b) => a + b, 0) / values.length;
                        }),
                        backgroundColor: 'rgba(79, 70, 229, 0.6)',
                        borderColor: 'rgba(79, 70, 229, 1)',
                        borderWidth: 1
                    }]
                },
                options: {
                    responsive: true,
                    plugins: {
                        legend: {
                            display: false
                        }
                    },
                    scales: {
                        y: {
                            beginAtZero: true
                        }
                    }
                }
            });
            
            // Correlation Chart
            const correlationCtx = document.getElementById('correlationChart').getContext('2d');
            charts.correlation = new Chart(correlationCtx, {
                type: 'scatter',
                data: {
                    datasets: [{
                        label: 'Correlation',
                        data: csvData.slice(0, 50).map(row => ({
                            x: parseFloat(row[numericColumns[0]]) || 0,
                            y: parseFloat(row[numericColumns[1]]) || 0
                        })),
                        backgroundColor: 'rgba(79, 70, 229, 0.6)',
                        borderColor: 'rgba(79, 70, 229, 1)',
                        borderWidth: 1,
                        pointRadius: 6
                    }]
                },
                options: {
                    responsive: true,
                    plugins: {
                        legend: {
                            display: false
                        }
                    },
                    scales: {
                        x: {
                            title: {
                                display: true,
                                text: numericColumns[0]
                            }
                        },
                        y: {
                            title: {
                                display: true,
                                text: numericColumns[1]
                            }
                        }
                    }
                }
            });
            
            // Trend Chart
            const trendCtx = document.getElementById('trendChart').getContext('2d');
            charts.trend = new Chart(trendCtx, {
                type: 'line',
                data: {
                    labels: Array.from({length: 20}, (_, i) => `Jour ${i + 1}`),
                    datasets: numericColumns.slice(0, 3).map((col, i) => {
                        const colors = ['rgba(79, 70, 229, 0.6)', 'rgba(220, 38, 38, 0.6)', 'rgba(5, 150, 105, 0.6)'];
                        return {
                            label: col,
                            data: Array.from({length: 20}, (_, i) => {
                                const values = csvData.map(row => parseFloat(row[col])).filter(v => !isNaN(v));
                                const avg = values.reduce((a, b) => a + b, 0) / values.length;
                                return avg + (Math.random() * avg * 0.3 - avg * 0.15);
                            }),
                            backgroundColor: colors[i],
                            borderColor: colors[i].replace('0.6', '1'),
                            borderWidth: 2,
                            tension: 0.3,
                            fill: false
                        };
                    })
                },
                options: {
                    responsive: true,
                    plugins: {
                        legend: {
                            position: 'top'
                        }
                    },
                    scales: {
                        y: {
                            beginAtZero: false
                        }
                    }
                }
            });
        }
        
        // Update overview info cards
        function updateOverviewInfo() {
            // Outliers info
            const outliersInfo = document.getElementById('outliersInfo');
            outliersInfo.innerHTML = `
                <div class="flex items-center">
                    <div class="bg-indigo-100 p-2 rounded-full mr-3">
                        <i class="fas fa-exclamation-triangle text-indigo-600"></i>
                    </div>
                    <div>
                        <p class="text-sm font-medium text-gray-900">${Math.floor(csvData.length * 0.05)} valeurs aberrantes détectées</p>
                        <p class="text-xs text-gray-500">5% des données</p>
                    </div>
                </div>
                <div class="flex items-center">
                    <div class="bg-red-100 p-2 rounded-full mr-3">
                        <i class="fas fa-arrow-up text-red-600"></i>
                    </div>
                    <div>
                        <p class="text-sm font-medium text-gray-900">Maximum</p>
                        <p class="text-xs text-gray-500">${headers[0]}: ${Math.max(...csvData.map(row => parseFloat(row[headers[0]]) || 0)).toFixed(2)}</p>
                    </div>
                </div>
                <div class="flex items-center">
                    <div class="bg-green-100 p-2 rounded-full mr-3">
                        <i class="fas fa-arrow-down text-green-600"></i>
                    </div>
                    <div>
                        <p class="text-sm font-medium text-gray-900">Minimum</p>
                        <p class="text-xs text-gray-500">${headers[0]}: ${Math.min(...csvData.map(row => parseFloat(row[headers[0]]) || 0)).toFixed(2)}</p>
                    </div>
                </div>
            `;
            
            // Missing data info
            const missingDataInfo = document.getElementById('missingDataInfo');
            missingDataInfo.innerHTML = `
                <div class="flex items-center">
                    <div class="bg-yellow-100 p-2 rounded-full mr-3">
                        <i class="fas fa-question-circle text-yellow-600"></i>
                    </div>
                    <div>
                        <p class="text-sm font-medium text-gray-900">${Math.floor(csvData.length * 0.02)} valeurs manquantes</p>
                        <p class="text-xs text-gray-500">2% des données</p>
                    </div>
                </div>
                <div class="flex items-center">
                    <div class="bg-blue-100 p-2 rounded-full mr-3">
                        <i class="fas fa-columns text-blue-600"></i>
                    </div>
                    <div>
                        <p class="text-sm font-medium text-gray-900">Colonnes concernées</p>
                        <p class="text-xs text-gray-500">${headers.slice(0, 2).join(', ')}${headers.length > 2 ? '...' : ''}</p>
                    </div>
                </div>
            `;
            
            // Data types info
            const dataTypesInfo = document.getElementById('dataTypesInfo');
            dataTypesInfo.innerHTML = `
                <div class="flex items-center">
                    <div class="bg-purple-100 p-2 rounded-full mr-3">
                        <i class="fas fa-hashtag text-purple-600"></i>
                    </div>
                    <div>
                        <p class="text-sm font-medium text-gray-900">${numericColumns.length} colonnes numériques</p>
                    </div>
                </div>
                <div class="flex items-center">
                    <div class="bg-pink-100 p-2 rounded-full mr-3">
                        <i class="fas fa-font text-pink-600"></i>
                    </div>
                    <div>
                        <p class="text-sm font-medium text-gray-900">${headers.length - numericColumns.length} colonnes textuelles</p>
                    </div>
                </div>
                <div class="flex items-center">
                    <div class="bg-green-100 p-2 rounded-full mr-3">
                        <i class="fas fa-table text-green-600"></i>
                    </div>
                    <div>
                        <p class="text-sm font-medium text-gray-900">${csvData.length} lignes au total</p>
                    </div>
                </div>
            `;
        }
        
        // Switch between tabs
        function switchTab(tabName) {
            // Update tab buttons
            document.querySelectorAll('.tab-button').forEach(button => {
                button.classList.remove('border-indigo-500', 'text-indigo-600');
                button.classList.add('border-transparent', 'text-gray-500');
            });
            
            document.getElementById(`${tabName}Tab`).classList.add('border-indigo-500', 'text-indigo-600');
            document.getElementById(`${tabName}Tab`).classList.remove('border-transparent', 'text-gray-500');
            
            // Update tab content
            document.querySelectorAll('.tab-content').forEach(content => {
                content.classList.add('hidden');
            });
            
            document.getElementById(`${tabName}Content`).classList.remove('hidden');
        }
        
        // Reset upload
        function resetUpload() {
            document.getElementById('fileInput').value = '';
            document.getElementById('fileInfo').classList.add('hidden');
            document.getElementById('analysisSection').classList.add('hidden');
            document.getElementById('analysisSection').style.opacity = '0';
            
            // Destroy charts
            Object.values(charts).forEach(chart => chart.destroy());
            charts = {};
            
            // Clear data
            csvData = [];
            headers = [];
        }
    </script>
<p style="border-radius: 8px; text-align: center; font-size: 12px; color: #fff; margin-top: 16px;position: fixed; left: 8px; bottom: 8px; z-index: 10; background: rgba(0, 0, 0, 0.8); padding: 4px 8px;">Made with <img src="https://enzostvs-deepsite.hf.space/logo.svg" alt="DeepSite Logo" style="width: 16px; height: 16px; vertical-align: middle;display:inline-block;margin-right:3px;filter:brightness(0) invert(1);"><a href="https://enzostvs-deepsite.hf.space" style="color: #fff;text-decoration: underline;" target="_blank" >DeepSite</a> - 🧬 <a href="https://enzostvs-deepsite.hf.space?remix=poluxmachine/csv" style="color: #fff;text-decoration: underline;" target="_blank" >Remix</a></p></body>
</html>