// Sample data processing - in a real app, this would come from an API
document.addEventListener('DOMContentLoaded', function() {
    // Process data and create visualizations
    
    // Performance overview cards
    createPerformanceCards();
    
    // Top performers table
    createTopPerformersTable();
    
    // Charts
    createRevenueByTypeChart();
    createEngagementRatesChart();
    
    // Detailed analysis table
    createNewsletterTable();
    
    // Event listeners for sorting/filtering
    document.getElementById('sortTopPerformers').addEventListener('change', updateTopPerformersTable);
    document.getElementById('sortTable').addEventListener('change', updateNewsletterTable);
    document.getElementById('dataFilter').addEventListener('change', updateNewsletterTable);
});

function createPerformanceCards() {
    const container = document.getElementById('performanceCards');
    
    // These would be calculated from real data
    const metrics = [
        { title: "Total Revenue", value: "SEK 12,450,821", change: "+7.2%", icon: "dollar-sign" },
        { title: "Total Emails Sent", value: "5,271,883", change: "+3.4%", icon: "mail" },
        { title: "Avg Open Rate", value: "36.5%", change: "+1.1%", icon: "eye" },
        { title: "Avg Click Rate", value: "2.8%", change: "+0.4%", icon: "mouse-pointer" }
    ];
    
    metrics.forEach(metric => {
        const card = document.createElement('div');
        card.className = 'card bg-white p-4 rounded-lg shadow';
        card.innerHTML = `
            <div class="flex items-center justify-between">
                <div>
                    <p class="text-gray-500 text-sm">${metric.title}</p>
                    <p class="text-2xl font-semibold">${metric.value}</p>
                    <p class="text-green-500 text-sm">${metric.change} from last period</p>
                </div>
                <div class="p-3 rounded-full bg-blue-100 text-blue-600">
                    <i data-feather="${metric.icon}"></i>
                </div>
            </div>
        `;
        container.appendChild(card);
    });
}

function createTopPerformersTable() {
    // Sort and display top 5 performers by revenue
    updateTopPerformersTable();
}

function updateTopPerformersTable() {
    const sortBy = document.getElementById('sortTopPerformers').value;
    const tableBody = document.querySelector('#topPerformersTable tbody');
    
    // Clear existing rows
    tableBody.innerHTML = '';
    
    // Sample data - in a real app this would come from processed document data
    const performers = [
        { name: "Batteridrivna ljus + julbelysning", revenue: "SEK 536,665", openRate: "34.3%", clickRate: "3.9%", orders: 119 },
        { name: "Vakuumpåsar och förvaring", revenue: "SEK 361,063", openRate: "35.4%", clickRate: "3.2%", orders: 92 },
        { name: "Nya Förvara-sortimentet", revenue: "SEK 353,538", openRate: "41.0%", clickRate: "3.9%", orders: 83 },
        { name: "Gör fint hemma", revenue: "SEK 351,538", openRate: "38.9%", clickRate: "4.0%", orders: 112 },
        { name: "Bästsäljare", revenue: "SEK 350,165", openRate: "39.3%", clickRate: "3.8%", orders: 156 }
    ];
    
    // Sort based on selected option
    performers.sort((a, b) => {
        if (sortBy === 'revenue') {
            return parseFloat(b.revenue.replace(/[^0-9.]/g, '')) - parseFloat(a.revenue.replace(/[^0-9.]/g, ''));
        } else if (sortBy === 'openRate') {
            return parseFloat(b.openRate) - parseFloat(a.openRate);
        } else if (sortBy === 'clickRate') {
            return parseFloat(b.clickRate) - parseFloat(a.clickRate);
        } else if (sortBy === 'orders') {
            return b.orders - a.orders;
        }
        return 0;
    });
    
    // Add rows
    performers.forEach(item => {
        const row = document.createElement('tr');
        row.className = 'border-b hover:bg-gray-50';
        row.innerHTML = `
            <td class="py-2">${item.name}</td>
            <td class="text-right">${item.revenue}</td>
            <td class="text-right">${item.openRate}</td>
            <td class="text-right">${item.clickRate}</td>
            <td class="text-right">${item.orders}</td>
        `;
        tableBody.appendChild(row);
    });
}

function createRevenueByTypeChart() {
    const ctx = document.getElementById('revenueByTypeChart').getContext('2d');
    
    // Sample data based on document categories
    new Chart(ctx, {
        type: 'bar',
        data: {
            labels: ['Home & Living', 'Seasonal', 'Food & Cooking', 'Garden', 'Personal Care', 'Other'],
            datasets: [{
                label: 'Revenue (SEK)',
                data: [4850000, 3200000, 2100000, 1800000, 950000, 450000],
                backgroundColor: [
                    'rgba(59, 130, 246, 0.7)',
                    'rgba(16, 185, 129, 0.7)',
                    'rgba(245, 158, 11, 0.7)',
                    'rgba(139, 92, 246, 0.7)',
                    'rgba(236, 72, 153, 0.7)',
                    'rgba(75, 85, 99, 0.7)'
                ],
                borderColor: [
                    'rgba(59, 130, 246, 1)',
                    'rgba(16, 185, 129, 1)',
                    'rgba(245, 158, 11, 1)',
                    'rgba(139, 92, 246, 1)',
                    'rgba(236, 72, 153, 1)',
                    'rgba(75, 85, 99, 1)'
                ],
                borderWidth: 1
            }]
        },
        options: {
            responsive: true,
            plugins: {
                legend: {
                    display: false
                },
                tooltip: {
                    callbacks: {
                        label: function(context) {
                            return `SEK ${context.raw.toLocaleString()}`;
                        }
                    }
                }
            },
            scales: {
                y: {
                    beginAtZero: true,
                    ticks: {
                        callback: function(value) {
                            return `SEK ${(value / 1000).toFixed(0)}k`;
                        }
                    }
                }
            }
        }
    });
}

function createEngagementRatesChart() {
    const ctx = document.getElementById('engagementRatesChart').getContext('2d');
    
    new Chart(ctx, {
        type: 'line',
        data: {
            labels: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
            datasets: [
                {
                    label: 'Open Rate',
                    data: [32.5, 34.1, 35.7, 36.2, 37.8, 38.2, 37.5, 38.1, 39.4, 39.8, 40.2, 42.3],
                    borderColor: 'rgba(59, 130, 246, 1)',
                    backgroundColor: 'rgba(59, 130, 246, 0.1)',
                    tension: 0.4,
                    fill: true
                },
                {
                    label: 'Click Rate',
                    data: [2.1, 2.3, 2.5, 2.6, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.6, 3.9],
                    borderColor: 'rgba(16, 185, 129, 1)',
                    backgroundColor: 'rgba(16, 185, 129, 0.1)',
                    tension: 0.4,
                    fill: true
                }
            ]
        },
        options: {
            responsive: true,
            plugins: {
                tooltip: {
                    callbacks: {
                        label: function(context) {
                            return `${context.dataset.label}: ${context.raw}%`;
                        }
                    }
                }
            },
            scales: {
                y: {
                    beginAtZero: false,
                    min: 0,
                    ticks: {
                        callback: function(value) {
                            return `${value}%`;
                        }
                    }
                }
            }
        }
    });
}

function createNewsletterTable() {
    // Initial load with all data
    updateNewsletterTable();
}

function updateNewsletterTable() {
    const filterValue = document.getElementById('dataFilter').value;
    const sortBy = document.getElementById('sortTable').value;
    const tableBody = document.querySelector('#newsletterTable tbody');
    
    // Clear existing rows
    tableBody.innerHTML = '';
    
    // Sample data - in a real app this would be processed from the documents
    const newsletters = [
        { name: "Batteridrivna ljus + julbelysning [SV]", sent: "179,638", delivered: "179,426", opens: "24,753", clicks: "2,643", revenue: "SEK 53,666", orders: 119, openRate: "13.8%", clickRate: "1.5%", country: "SE" },
        { name: "Vakuumpåsar och förvaring [SV]", sent: "171,597", delivered: "171,292", opens: "60,651", clicks: "2,853", revenue: "SEK 36,106", orders: 92, openRate: "35.4%", clickRate: "1.7%", country: "SE" },
        { name: "Nya Förvara-sortimentet [SV]", sent: "172,602", delivered: "172,400", opens: "61,560", clicks: "6,103", revenue: "SEK 35,347", orders: 83, openRate: "35.7%", clickRate: "3.5%", country: "SE" },
        { name: "Gör fint hemma [SV]", sent: "172,075", delivered: "171,737", opens: "61,503", clicks: "4,338", revenue: "SEK 31,975", orders: 112, openRate: "35.8%", clickRate: "2.5%", country: "SE" },
        { name: "Bästsäljare  [SV]", sent: "172,845", delivered: "172,650", opens: "61,455", clicks: "4,339", revenue: "SEK 31,175", orders: 156, openRate: "35.6%", clickRate: "2.5%", country: "SE" },
        { name: "Utomhusljus - Gravljus [NO]", sent: "30,441", delivered: "30,402", opens: "7,656", clicks: "508", revenue: "SEK 6,493", orders: 11, openRate: "25.2%", clickRate: "1.7%", country: "NO" },
        { name: "Batteridrivna ljus + julbelysning [NO]", sent: "30,423", delivered: "30,387", opens: "7,687", clicks: "459", revenue: "SEK 5,939", orders: 11, openRate: "25.3%", clickRate: "1.5%", country: "NO" },
        { name: "Bakning [DK]", sent: "6,243", delivered: "6,205", opens: "1,973", clicks: "101", revenue: "SEK 1,923", orders: 5, openRate: "31.8%", clickRate: "1.6%", country: "DK" }
    ];
    
    // Filter data
    let filteredData = newsletters;
    if (filterValue !== 'all') {
        filteredData = newsletters.filter(item => item.country === filterValue);
    }
    
    // Sort data
    filteredData.sort((a, b) => {
        if (sortBy === 'name') {
            return a.name.localeCompare(b.name);
        } else if (sortBy === 'revenue') {
            return parseFloat(b.revenue.replace(/[^0-9.]/g, '')) - parseFloat(a.revenue.replace(/[^0-9.]/g, ''));
        } else if (sortBy === 'openRate') {
            return parseFloat(b.openRate) - parseFloat(a.openRate);
        } else if (sortBy === 'clickRate') {
            return parseFloat(b.clickRate) - parseFloat(a.clickRate);
        } else if (sortBy === 'orders') {
            return b.orders - a.orders;
        }
        return 0;
    });
    
    // Add rows
    filteredData.forEach(item => {
        const row = document.createElement('tr');
        row.className = 'border-b hover:bg-gray-50';
        row.innerHTML = `
            <td class="py-2">${item.name}</td>
            <td class="text-right">${item.sent}</td>
            <td class="text-right">${item.delivered}</td>
            <td class="text-right">${item.opens}</td>
            <td class="text-right">${item.clicks}</td>
            <td class="text-right">${item.revenue}</td>
            <td class="text-right">${item.orders}</td>
            <td class="text-right">${item.openRate}</td>
            <td class="text-right">${item.clickRate}</td>
        `;
        tableBody.appendChild(row);
    });
}