@extends('layouts.app')

@section('title', 'Dashboard')
@section('page-title', 'Dashboard')

@push('styles')
<style>
    .quick-action-btn {
        border: 1.5px solid #e2e8f0; border-radius: 10px;
        background: white; padding: 0.75rem 1rem;
        text-decoration: none; color: #374151;
        display: flex; align-items: center; gap: 10px;
        font-size: 0.875rem; font-weight: 500;
        transition: all 0.15s; white-space: nowrap;
    }
    .quick-action-btn:hover { border-color: #00a651; color: #00a651; background: #f0fdf4; }
    .quick-action-btn .btn-icon {
        width: 32px; height: 32px; border-radius: 8px;
        display: flex; align-items: center; justify-content: center;
        font-size: 0.9rem; flex-shrink: 0;
    }
    .chart-card { border: none; border-radius: 12px; box-shadow: 0 1px 3px rgba(0,0,0,0.07); }
    .invoice-number { font-family: monospace; font-weight: 600; color: #1e293b; font-size: 0.85rem; }
    .client-name { color: #374151; font-size: 0.875rem; }
    .invoice-amount { font-weight: 600; color: #1e293b; }
    .progress-bar-thin { height: 4px; border-radius: 2px; }
</style>
@endpush

@section('content')

{{-- ── OVERDUE ALERT BANNER ── --}}
@if($overdueCount > 0)
<div class="overdue-alert d-flex align-items-center gap-3 mb-4">
    <div style="width:40px;height:40px;background:#fee2e2;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;">
        <i class="bi bi-exclamation-triangle-fill text-danger"></i>
    </div>
    <div class="flex-grow-1">
        <strong class="text-danger">
            {{ $overdueCount }} overdue invoice{{ $overdueCount > 1 ? 's' : '' }}
        </strong>
        <span class="text-muted small ms-1">— totalling ₦{{ number_format($totalOverdue, 2) }}</span>
        <div class="text-muted" style="font-size:0.8rem;">Follow up with your clients to collect outstanding payments.</div>
    </div>
    <a href="{{ route('invoices.index', ['status' => 'overdue']) }}" class="btn btn-sm btn-danger" style="white-space:nowrap;">
        View Overdue
    </a>
</div>
@endif

{{-- ── FREE PLAN LIMIT WARNING ── --}}
@if(auth()->user()->isFreePlan())
    @php $limit = config('invotrack.free_invoice_limit', 5); @endphp
    <div class="alert d-flex align-items-center gap-3 mb-4" style="background:#fefce8;border:1px solid #fde68a;border-radius:10px;">
        <i class="bi bi-lightning-charge-fill" style="color:#d97706;font-size:1.2rem;"></i>
        <div class="flex-grow-1">
            <strong style="color:#92400e;">Free Plan:</strong>
            <span style="color:#78350f;"> {{ $monthlyInvoiceCount }}/{{ $limit }} invoices used this month.</span>
            @if($monthlyInvoiceCount >= $limit)
                <span class="fw-600 text-danger"> Limit reached!</span>
            @else
                <span style="color:#92400e;"> {{ $limit - $monthlyInvoiceCount }} remaining.</span>
            @endif
        </div>
        <a href="{{ route('subscription.index') }}" class="btn btn-sm fw-600" style="background:#f59e0b;color:white;border:none;">
            Upgrade
        </a>
    </div>
@endif

{{-- ── SUMMARY CARDS ── --}}
<div class="row g-3 mb-4">
    <div class="col-6 col-lg-3">
        <div class="card stat-card p-3 h-100">
            <div class="d-flex align-items-start justify-content-between mb-2">
                <div class="icon-wrap" style="background:#ede9fe;">
                    <i class="bi bi-receipt" style="color:#7c3aed;"></i>
                </div>
                <span class="badge rounded-pill" style="background:#f1f5f9;color:#64748b;font-size:0.7rem;">This month</span>
            </div>
            <div class="stat-value">₦{{ number_format($totalInvoicedThisMonth / 1000, 1) }}k</div>
            <div class="stat-label">Total Invoiced</div>
        </div>
    </div>
    <div class="col-6 col-lg-3">
        <div class="card stat-card p-3 h-100">
            <div class="d-flex align-items-start justify-content-between mb-2">
                <div class="icon-wrap" style="background:#dcfce7;">
                    <i class="bi bi-check-circle-fill" style="color:#16a34a;"></i>
                </div>
                <span class="badge rounded-pill" style="background:#f1f5f9;color:#64748b;font-size:0.7rem;">This month</span>
            </div>
            <div class="stat-value" style="color:#16a34a;">₦{{ number_format($totalPaidThisMonth / 1000, 1) }}k</div>
            <div class="stat-label">Total Paid</div>
        </div>
    </div>
    <div class="col-6 col-lg-3">
        <div class="card stat-card p-3 h-100">
            <div class="d-flex align-items-start justify-content-between mb-2">
                <div class="icon-wrap" style="background:#dbeafe;">
                    <i class="bi bi-hourglass-split" style="color:#2563eb;"></i>
                </div>
                <span class="badge rounded-pill" style="background:#f1f5f9;color:#64748b;font-size:0.7rem;">All time</span>
            </div>
            <div class="stat-value" style="color:#2563eb;">₦{{ number_format($totalOutstanding / 1000, 1) }}k</div>
            <div class="stat-label">Outstanding</div>
        </div>
    </div>
    <div class="col-6 col-lg-3">
        <div class="card stat-card p-3 h-100">
            <div class="d-flex align-items-start justify-content-between mb-2">
                <div class="icon-wrap" style="background:#fee2e2;">
                    <i class="bi bi-exclamation-circle-fill" style="color:#dc2626;"></i>
                </div>
                <span class="badge rounded-pill" style="background:#f1f5f9;color:#64748b;font-size:0.7rem;">Action needed</span>
            </div>
            <div class="stat-value" style="color:#dc2626;">₦{{ number_format($totalOverdue / 1000, 1) }}k</div>
            <div class="stat-label">Overdue</div>
        </div>
    </div>
</div>

{{-- ── QUICK ACTIONS ── --}}
<div class="d-flex flex-wrap gap-2 mb-4">
    <a href="{{ route('invoices.create') }}" class="quick-action-btn">
        <div class="btn-icon" style="background:#dcfce7;"><i class="bi bi-plus-lg" style="color:#16a34a;"></i></div>
        New Invoice
    </a>
    <a href="{{ route('clients.create') }}" class="quick-action-btn">
        <div class="btn-icon" style="background:#dbeafe;"><i class="bi bi-person-plus" style="color:#2563eb;"></i></div>
        Add Client
    </a>
    @if(!auth()->user()->isFreePlan())
    <a href="{{ route('expenses.create') }}" class="quick-action-btn">
        <div class="btn-icon" style="background:#fef9c3;"><i class="bi bi-wallet2" style="color:#ca8a04;"></i></div>
        Add Expense
    </a>
    @endif
    <a href="{{ route('invoices.index') }}" class="quick-action-btn">
        <div class="btn-icon" style="background:#f3e8ff;"><i class="bi bi-list-ul" style="color:#9333ea;"></i></div>
        All Invoices
    </a>
</div>

{{-- ── CHART + STATS ROW ── --}}
<div class="row g-3 mb-4">
    {{-- Revenue Chart --}}
    <div class="col-lg-8">
        <div class="card chart-card p-3 h-100">
            <div class="d-flex align-items-center justify-content-between mb-3">
                <div>
                    <h6 class="fw-600 mb-0" style="color:#1e293b;">Revenue — Last 6 Months</h6>
                    <small class="text-muted">Paid invoices only</small>
                </div>
                <span style="font-size:0.75rem;color:#94a3b8;">₦ NGN</span>
            </div>
            <canvas id="revenueChart" height="100"></canvas>
        </div>
    </div>

    {{-- Mini stats --}}
    <div class="col-lg-4">
        <div class="card chart-card p-3 h-100">
            <h6 class="fw-600 mb-3" style="color:#1e293b;">Quick Overview</h6>

            <div class="mb-3">
                <div class="d-flex justify-content-between mb-1">
                    <span class="small text-muted">Total Clients</span>
                    <span class="small fw-600">{{ $totalClients }}</span>
                </div>
                <div class="progress progress-bar-thin">
                    <div class="progress-bar" style="width:{{ min(100, $totalClients * 10) }}%;background:#00a651;"></div>
                </div>
            </div>

            <div class="mb-3">
                <div class="d-flex justify-content-between mb-1">
                    <span class="small text-muted">Draft Invoices</span>
                    <span class="small fw-600">{{ $draftCount }}</span>
                </div>
                <div class="progress progress-bar-thin">
                    <div class="progress-bar" style="width:{{ min(100, $draftCount * 20) }}%;background:#94a3b8;"></div>
                </div>
            </div>

            <div class="mb-3">
                <div class="d-flex justify-content-between mb-1">
                    <span class="small text-muted">Overdue Invoices</span>
                    <span class="small fw-600 text-danger">{{ $overdueCount }}</span>
                </div>
                <div class="progress progress-bar-thin">
                    <div class="progress-bar bg-danger" style="width:{{ min(100, $overdueCount * 25) }}%;"></div>
                </div>
            </div>

            <hr class="my-3">
            <div class="text-center">
                <div style="font-size:1.75rem;font-weight:700;color:#00a651;">
                    @php
                        $collectionRate = $totalInvoicedThisMonth > 0
                            ? round(($totalPaidThisMonth / $totalInvoicedThisMonth) * 100)
                            : 0;
                    @endphp
                    {{ $collectionRate }}%
                </div>
                <div class="text-muted small">Collection Rate (this month)</div>
            </div>
        </div>
    </div>
</div>

{{-- ── RECENT INVOICES ── --}}
<div class="card table-card">
    <div class="d-flex align-items-center justify-content-between p-3 border-bottom">
        <h6 class="fw-600 mb-0" style="color:#1e293b;">Recent Invoices</h6>
        <a href="{{ route('invoices.index') }}" class="btn btn-sm btn-outline-secondary" style="font-size:0.8rem;">
            View All <i class="bi bi-arrow-right ms-1"></i>
        </a>
    </div>

    @if($recentInvoices->isEmpty())
        <div class="empty-state">
            <div class="empty-icon"><i class="bi bi-receipt"></i></div>
            <h5>No invoices yet</h5>
            <p>Create your first invoice and start getting paid.</p>
            <a href="{{ route('invoices.create') }}" class="btn" style="background:#00a651;color:white;">
                <i class="bi bi-plus-lg me-2"></i>Create Invoice
            </a>
        </div>
    @else
        <div class="table-responsive">
            <table class="table table-hover mb-0">
                <thead>
                    <tr>
                        <th>Invoice #</th>
                        <th>Client</th>
                        <th class="d-none d-md-table-cell">Date</th>
                        <th class="d-none d-md-table-cell">Due</th>
                        <th>Amount</th>
                        <th>Status</th>
                        <th></th>
                    </tr>
                </thead>
                <tbody>
                    @foreach($recentInvoices as $invoice)
                    <tr>
                        <td><span class="invoice-number">{{ $invoice->invoice_number }}</span></td>
                        <td>
                            <div class="client-name">{{ $invoice->client->display_name }}</div>
                            <small class="text-muted d-md-none">{{ $invoice->issue_date->format('d/m/Y') }}</small>
                        </td>
                        <td class="d-none d-md-table-cell text-muted small">{{ $invoice->issue_date->format('d/m/Y') }}</td>
                        <td class="d-none d-md-table-cell text-muted small">
                            {{ $invoice->due_date->format('d/m/Y') }}
                            @if($invoice->isOverdue())
                                <span class="text-danger d-block" style="font-size:0.72rem;">
                                    {{ $invoice->due_date->diffForHumans() }}
                                </span>
                            @endif
                        </td>
                        <td><span class="invoice-amount">₦{{ number_format($invoice->total, 2) }}</span></td>
                        <td>
                            <span class="status-badge badge-{{ $invoice->status }}">
                                {{ $invoice->status_badge['label'] }}
                            </span>
                        </td>
                        <td>
                            <a href="{{ route('invoices.show', $invoice) }}" class="btn btn-sm btn-light" style="font-size:0.75rem;">
                                View
                            </a>
                        </td>
                    </tr>
                    @endforeach
                </tbody>
            </table>
        </div>
    @endif
</div>

@endsection

@push('scripts')
<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
<script>
const ctx = document.getElementById('revenueChart').getContext('2d');

const labels = @json($chartLabels);
const data   = @json($chartData);

new Chart(ctx, {
    type: 'bar',
    data: {
        labels: labels,
        datasets: [{
            label: 'Revenue (₦)',
            data: data,
            backgroundColor: data.map((v, i) =>
                i === data.length - 1 ? '#00a651' : 'rgba(0,166,81,0.25)'
            ),
            borderColor: '#00a651',
            borderWidth: 1.5,
            borderRadius: 6,
            borderSkipped: false,
        }]
    },
    options: {
        responsive: true,
        maintainAspectRatio: true,
        plugins: {
            legend: { display: false },
            tooltip: {
                callbacks: {
                    label: ctx => '₦' + ctx.parsed.y.toLocaleString('en-NG', {minimumFractionDigits: 2})
                }
            }
        },
        scales: {
            y: {
                beginAtZero: true,
                grid: { color: '#f1f5f9' },
                ticks: {
                    font: { size: 11 },
                    color: '#94a3b8',
                    callback: v => '₦' + (v / 1000).toFixed(0) + 'k'
                }
            },
            x: {
                grid: { display: false },
                ticks: { font: { size: 11 }, color: '#94a3b8' }
            }
        }
    }
});
</script>
@endpush