@extends('layouts.admin')

@section('title', 'Dashboard')

@section('content')
<div class="row">
    <!-- Top Stats -->
    <div class="col-md-3 mb-3">
        <div class="card bg-success text-white mb-0 h-100 shadow-none" style="border-radius: 4px;">
            <div class="card-body position-relative">
                <div class="mb-2" style="font-size: 0.9rem;">Total Products</div>
                <h2 class="font-weight-bold mb-0">{{ $stats['products'] ?? 0 }}</h2>
                <i class="fas fa-box position-absolute" style="right: 20px; top: 50%; transform: translateY(-50%); font-size: 3rem; opacity: 0.2;"></i>
            </div>
        </div>
    </div>
    <div class="col-md-3 mb-3">
        <div class="card bg-info text-white mb-0 h-100 shadow-none" style="border-radius: 4px;">
            <div class="card-body position-relative">
                <div class="mb-2" style="font-size: 0.9rem;">Total Categories</div>
                <h2 class="font-weight-bold mb-0">{{ $stats['categories'] ?? 0 }}</h2>
                <i class="fas fa-tags position-absolute" style="right: 20px; top: 50%; transform: translateY(-50%); font-size: 3rem; opacity: 0.2;"></i>
            </div>
        </div>
    </div>
    <div class="col-md-3 mb-3">
        <div class="card bg-primary text-white mb-0 h-100 shadow-none" style="border-radius: 4px;">
            <div class="card-body position-relative">
                <div class="mb-2" style="font-size: 0.9rem;">Total Users</div>
                <h2 class="font-weight-bold mb-0">{{ $stats['users'] ?? 0 }}</h2>
                <i class="fas fa-users position-absolute" style="right: 20px; top: 50%; transform: translateY(-50%); font-size: 3rem; opacity: 0.2;"></i>
            </div>
        </div>
    </div>
    <div class="col-md-3 mb-3">
        <div class="card bg-danger text-white mb-0 h-100 shadow-none" style="border-radius: 4px; background-color: #e91e63 !important;">
            <div class="card-body position-relative">
                <div class="mb-2" style="font-size: 0.9rem;">Banner Applications</div>
                <h2 class="font-weight-bold mb-0">{{ $stats['banner_applications'] ?? 0 }}</h2>
                <i class="fas fa-file-invoice position-absolute" style="right: 20px; top: 50%; transform: translateY(-50%); font-size: 3rem; opacity: 0.2;"></i>
            </div>
        </div>
    </div>
</div>

<!-- Filter Bar -->
<div class="card mb-4 shadow-none">
    <div class="card-body py-2">
        <div class="row align-items-end g-2">
            <div class="col-md-3">
                <label class="small text-muted mb-1">Start Date</label>
                <input type="date" id="filter-start" class="form-control form-control-sm"
                    value="{{ now()->subDays(30)->format('Y-m-d') }}">
            </div>
            <div class="col-auto text-muted small pb-1">— TO —</div>
            <div class="col-md-3">
                <label class="small text-muted mb-1">End Date</label>
                <input type="date" id="filter-end" class="form-control form-control-sm"
                    value="{{ now()->format('Y-m-d') }}">
            </div>
            <div class="col-md-2">
                <label class="small text-muted mb-1">Interval</label>
                <select id="filter-interval" class="form-control form-control-sm select2" style="width:100%;">
                    <option value="weekly">WEEKLY</option>
                    <option value="monthly">MONTHLY</option>
                    <option value="yearly">YEARLY</option>
                </select>
            </div>
            <div class="col-md-2">
                <label class="small text-muted mb-1">Chart Type</label>
                <select id="filter-type" class="form-control form-control-sm select2" style="width:100%;">
                    <option value="line">LINE</option>
                    <option value="bar">BAR</option>
                </select>
            </div>
            <div class="col-md-1">
                <button id="btn-apply" class="btn btn-primary btn-sm w-100">
                    <i class="fas fa-filter"></i> Apply
                </button>
            </div>
        </div>
    </div>
</div>

<div class="row">
    <!-- Main Chart -->
    <div class="col-md-8">
        <div class="card shadow-none">
            <div class="card-header bg-white border-bottom-0 d-flex align-items-center justify-content-between">
                <h5 class="card-title text-muted mb-0">User Growth Trends</h5>
                <small id="chart-range" class="text-muted"></small>
            </div>
            <div class="card-body position-relative" style="min-height: 420px;">
                <div id="chart-loading" style="display:none; position:absolute; inset:0; background:rgba(255,255,255,0.7); z-index:10; align-items:center; justify-content:center;">
                    <i class="fas fa-spinner fa-spin fa-2x text-primary"></i>
                </div>
                <canvas id="growthChart" style="min-height: 400px; height: 400px; max-height: 400px; max-width: 100%;"></canvas>
            </div>
        </div>
    </div>
    <!-- Recent Products -->
    <div class="col-md-4">
        <div class="card shadow-none">
            <div class="card-header bg-white">
                <h5 class="card-title text-muted mb-0">Latest Products</h5>
            </div>
            <div class="card-body p-0">
                <ul class="list-group list-group-flush">
                    @foreach($latestProducts as $product)
                    <li class="list-group-item px-3 py-2 border-0">
                        <div class="d-flex align-items-center">
                            <div class="bg-light rounded p-2 mr-3 text-primary">
                                <i class="fas fa-box"></i>
                            </div>
                            <div>
                                <div class="font-weight-bold" style="font-size: 0.9rem;">{{ $product->name }}</div>
                                <div class="text-muted small">{{ $product->category->name ?? 'Uncategorized' }}</div>
                            </div>
                            <div class="ml-auto font-weight-bold text-success small">
                                RM {{ number_format($product->price, 0, ',', '.') }}
                            </div>
                        </div>
                    </li>
                    @endforeach
                </ul>
            </div>
            <div class="card-footer bg-white text-center">
                <a href="{{ route('admin.products.index') }}" class="small font-weight-bold text-primary">View All Products</a>
            </div>
        </div>
    </div>
</div>
@endsection

@push('scripts')
<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
<script>
$(document).ready(function () {
    $('.select2').select2({ theme: 'bootstrap4' });

    const ctx = document.getElementById('growthChart').getContext('2d');
    let growthChart;

    function buildChart(labels, data, type) {
        if (growthChart) growthChart.destroy();

        const isLine = type === 'line';

        growthChart = new Chart(ctx, {
            type: type,
            data: {
                labels: labels,
                datasets: [{
                    label: 'Registrations',
                    data: data,
                    borderColor: '#FF9D00',
                    backgroundColor: isLine ? 'rgba(255, 157, 0, 0.1)' : 'rgba(255, 157, 0, 0.7)',
                    pointBackgroundColor: '#FF9D00',
                    pointBorderColor: '#fff',
                    pointBorderWidth: 2,
                    pointRadius: isLine ? 4 : 0,
                    borderWidth: 2,
                    fill: isLine,
                    tension: 0.4,
                    borderRadius: isLine ? 0 : 4,
                }]
            },
            options: {
                maintainAspectRatio: false,
                scales: {
                    x: { grid: { display: false } },
                    y: {
                        beginAtZero: true,
                        grid: { color: '#f5f5f5' },
                        ticks: { stepSize: 1, precision: 0 }
                    }
                },
                plugins: { legend: { display: false } },
                animation: { duration: 400 }
            }
        });
    }

    function fetchChartData() {
        const start    = $('#filter-start').val();
        const end      = $('#filter-end').val();
        const interval = $('#filter-interval').val();
        const type     = $('#filter-type').val();

        if (!start || !end || start > end) {
            alert('Please select a valid date range.');
            return;
        }

        $('#chart-loading').css('display', 'flex');
        $('#chart-range').text(start + ' → ' + end);

        $.ajax({
            url: '{{ route("admin.dashboard.chart-data") }}',
            method: 'GET',
            data: { start_date: start, end_date: end, interval: interval },
            success: function (response) {
                const labels = response.map(d => d.label);
                const data   = response.map(d => d.count);
                buildChart(labels, data, type);
            },
            error: function () {
                alert('Failed to load chart data. Please try again.');
            },
            complete: function () {
                $('#chart-loading').hide();
            }
        });
    }

    // Initial load
    fetchChartData();

    // Apply filter on button click
    $('#btn-apply').on('click', fetchChartData);

    // Also re-render chart type without re-fetching
    $('#filter-type').on('change', function () {
        if (growthChart) {
            const type   = $(this).val();
            const labels = growthChart.data.labels;
            const data   = growthChart.data.datasets[0].data;
            buildChart(labels, data, type);
        }
    });
});
</script>
@endpush