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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">
    <title>ChartWave Tracker | Latest Chart</title>
    <link rel="icon" type="image/x-icon" href="/static/favicon.ico">
    <script src="https://cdn.tailwindcss.com"></script>
    <script src="https://unpkg.com/feather-icons"></script>
    <script src="https://cdn.jsdelivr.net/npm/feather-icons/dist/feather.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/vanta@latest/dist/vanta.waves.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/date-fns/1.30.1/date_fns.min.js"></script>
    <style>
        .movement-up { color: #10B981; }
        .movement-down { color: #EF4444; }
        .movement-new { color: #3B82F6; }
        .movement-re { color: #8B5CF6; }
        .movement-same { color: #6B7280; }
        .wave-bg { min-height: 100vh; }
        .animate-fade-in { animation: fadeIn 0.5s ease-in; }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .scrollbar-hide::-webkit-scrollbar {
            display: none;
        }
    </style>
</head>
<body class="bg-gray-100">
    <div id="wave-bg" class="wave-bg"></div>
    
    <div class="relative z-10 container mx-auto px-4 py-8">
        <header class="mb-8 text-center animate-fade-in">
            <h1 class="text-4xl font-bold text-white drop-shadow-lg">ChartWave Tracker</h1>
            <p class="text-xl text-white mt-2">Your personal music chart tracker</p>
        </header>

        <main class="bg-white bg-opacity-90 backdrop-blur-lg rounded-xl shadow-xl overflow-hidden animate-fade-in">
            <div class="p-6 border-b border-gray-200 flex justify-between items-center">
                <h2 class="text-2xl font-bold text-gray-800">Current Chart</h2>
                <div class="flex space-x-3">
                    <button id="editBtn" class="px-4 py-2 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 transition flex items-center gap-2">
                        <i data-feather="edit-3" class="w-4 h-4"></i> Edit
                    </button>
                    <button id="newChartBtn" class="px-4 py-2 bg-green-600 text-white rounded-lg hover:bg-green-700 transition flex items-center gap-2">
                        <i data-feather="plus" class="w-4 h-4"></i> New Chart
                    </button>
                </div>
            </div>

            <div class="overflow-x-auto scrollbar-hide">
                <table class="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">Rank</th>
                            <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Song</th>
                            <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Artist(s)</th>
                            <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Peak</th>
                            <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Weeks</th>
                            <th class="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">Movement</th>
                        </tr>
                    </thead>
                    <tbody class="bg-white divide-y divide-gray-200" id="chartTableBody">
                        <!-- Chart entries will be populated here -->
                    </tbody>
                </table>
            </div>

            <div class="p-4 bg-gray-50 border-t border-gray-200">
                <button id="dropoutToggle" class="flex items-center text-gray-600 hover:text-indigo-600">
                    <i data-feather="chevron-down" class="w-4 h-4 mr-2"></i>
                    <span>Show Dropouts</span>
                </button>
                <div id="dropoutSection" class="hidden mt-3">
                    <h3 class="text-lg font-medium text-gray-700 mb-2">Songs that left the chart this week</h3>
                    <div class="space-y-1" id="dropoutList">
                        <!-- Dropout entries will be populated here -->
                    </div>
                </div>
            </div>
        </main>

        <div id="newChartModal" class="fixed inset-0 z-50 hidden flex items-center justify-center bg-black bg-opacity-50">
            <div class="bg-white rounded-xl p-6 w-full max-w-md">
                <div class="flex justify-between items-center mb-4">
                    <h3 class="text-xl font-bold">Create New Chart</h3>
                    <button id="closeModalBtn"><i data-feather="x" class="text-gray-500"></i></button>
                </div>
                <div class="space-y-4">
                    <div>
                        <label class="block text-sm font-medium text-gray-700 mb-1">Chart Date</label>
                        <input type="date" id="chartDateInput" class="w-full px-3 py-2 border border-gray-300 rounded-md">
                    </div>
                    <div class="flex justify-end space-x-3 pt-2">
                        <button id="cancelNewChartBtn" class="px-4 py-2 border border-gray-300 rounded-md hover:bg-gray-50">Cancel</button>
                        <button id="confirmNewChartBtn" class="px-4 py-2 bg-indigo-600 text-white rounded-md hover:bg-indigo-700">Create</button>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <script>
        // Initialize Vanta.js waves background
        VANTA.WAVES({
            el: "#wave-bg",
            color: 0x3b82f6,
            waveHeight: 20,
            shininess: 50,
            waveSpeed: 1,
            zoom: 0.8
        });

        // Sample chart data (would normally come from API/local storage)
        const currentChart = {
            date: "2023-11-20",
            entries: [
                { rank: 1, song: "Cruel Summer", artists: "Taylor Swift", peak: 1, weeks: 12, movement: { type: "<>", change: 0 } },
                { rank: 2, song: "Paint The Town Red", artists: "Doja Cat", peak: 1, weeks: 14, movement: { type: "<>", change: 0 } },
                { rank: 3, song: "What Was I Made For?", artists: "Billie Eilish", peak: 3, weeks: 5, movement: { type: "+2", change: 2 } },
                { rank: 4, song: "Dance The Night", artists: "Dua Lipa", peak: 2, weeks: 18, movement: { type: "-1", change: -1 } },
                { rank: 5, song: "Fast Car", artists: "Luke Combs", peak: 2, weeks: 20, movement: { type: "-1", change: -1 } },
                { rank: 6, song: "Last Night", artists: "Morgan Wallen", peak: 1, weeks: 32, movement: { type: "<>", change: 0 } },
                { rank: 7, song: "Barbie World", artists: "Nicki Minaj, Ice Spice", peak: 7, weeks: 8, movement: { type: "<>", change: 0 } },
                { rank: 8, song: "vampire", artists: "Olivia Rodrigo", peak: 1, weeks: 16, movement: { type: "<>", change: 0 } },
                { rank: 9, song: "Bad Idea Right?", artists: "Olivia Rodrigo", peak: 7, weeks: 12, movement: { type: "NEW", change: 0 } },
                { rank: 10, song: "Kill Bill", artists: "SZA", peak: 1, weeks: 42, movement: { type: "<>", change: 0 } }
            ],
            dropouts: [
                { song: "Flowers", artists: "Miley Cyrus", peak: 1, weeks: 35 },
                { song: "Die For You", artists: "The Weeknd", peak: 1, weeks: 30 }
            ]
        };

        // Populate the chart table
        function populateChart() {
            const tableBody = document.getElementById('chartTableBody');
            tableBody.innerHTML = '';
            
            currentChart.entries.forEach(entry => {
                const row = document.createElement('tr');
                row.className = 'hover:bg-gray-50';
                
                // Determine movement class
                let movementClass = '';
                let movementSymbol = '';
                
                if (entry.movement.type === "+X") {
                    movementClass = 'movement-up';
                    movementSymbol = `↑${entry.movement.change}`;
                } else if (entry.movement.type === "-X") {
                    movementClass = 'movement-down';
                    movementSymbol = `↓${Math.abs(entry.movement.change)}`;
                } else if (entry.movement.type === "NEW") {
                    movementClass = 'movement-new';
                    movementSymbol = 'NEW';
                } else if (entry.movement.type === "RE") {
                    movementClass = 'movement-re';
                    movementSymbol = 'RE';
                } else {
                    movementClass = 'movement-same';
                    movementSymbol = '↔';
                }
                
                row.innerHTML = `
                    <td class="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900">${entry.rank}</td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900">${entry.song}</td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
                        ${entry.artists.split(',').map(artist => {
                            const trimmed = artist.trim();
                            // Only link main artists (simple check for this demo)
                            if (trimmed === 'Taylor Swift' || trimmed === 'Doja Cat' || trimmed === 'Billie Eilish' || 
                                trimmed === 'Dua Lipa' || trimmed === 'Olivia Rodrigo' || trimmed === 'SZA') {
                                return `<a href="artist.html?name=${encodeURIComponent(trimmed)}" class="text-indigo-600 hover:underline">${trimmed}</a>`;
                            } else {
                                return `<span>${trimmed}</span>`;
                            }
                        }).join(', ')}
                    </td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">${entry.peak}</td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">${entry.weeks}</td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm font-medium ${movementClass}">${movementSymbol}</td>
                `;
                tableBody.appendChild(row);
            });
            
            // Populate dropouts
            const dropoutList = document.getElementById('dropoutList');
            dropoutList.innerHTML = '';
            
            currentChart.dropouts.forEach(dropout => {
                const item = document.createElement('div');
                item.className = 'text-sm text-gray-600';
                item.innerHTML = `<span class="font-medium">${dropout.song}</span> by ${dropout.artists} (Peak: ${dropout.peak}, Weeks: ${dropout.weeks})`;
                dropoutList.appendChild(item);
            });
        }

        // Toggle dropout section
        document.getElementById('dropoutToggle').addEventListener('click', function() {
            const section = document.getElementById('dropoutSection');
            const icon = this.querySelector('i');
            
            if (section.classList.contains('hidden')) {
                section.classList.remove('hidden');
                feather.replace();
                icon.setAttribute('data-feather', 'chevron-up');
            } else {
                section.classList.add('hidden');
                feather.replace();
                icon.setAttribute('data-feather', 'chevron-down');
            }
            feather.replace();
        });

        // New chart modal
        document.getElementById('newChartBtn').addEventListener('click', function() {
            document.getElementById('newChartModal').classList.remove('hidden');
            // Set default date to 7 days after current chart
            const nextDate = new Date(currentChart.date);
            nextDate.setDate(nextDate.getDate() + 7);
            const formattedDate = nextDate.toISOString().split('T')[0];
            document.getElementById('chartDateInput').value = formattedDate;
        });

        document.getElementById('closeModalBtn').addEventListener('click', function() {
            document.getElementById('newChartModal').classList.add('hidden');
        });

        document.getElementById('cancelNewChartBtn').addEventListener('click', function() {
            document.getElementById('newChartModal').classList.add('hidden');
        });

        document.getElementById('confirmNewChartBtn').addEventListener('click', function() {
            const selectedDate = document.getElementById('chartDateInput').value;
            alert(`New chart for ${selectedDate} would be created here (implementation would save data)`);
            document.getElementById('newChartModal').classList.add('hidden');
        });

        // Initialize on page load
        document.addEventListener('DOMContentLoaded', function() {
            populateChart();
            feather.replace();
        });
    </script>
</body>
</html>