@extends('layouts.app')

@section('title', 'Procurement Dashboard')

@section('content')
@php
    $fmt = fn($v) => $v >= 1000000 ? number_format($v/1000000, 2).'M' : ($v >= 1000 ? number_format($v/1000, 1).'K' : number_format($v, 0));
    $kpi = fn($key) => $kpis[$key] ?? ['value' => 0, 'change_pct' => 0];
@endphp

<x-page-header title="Procurement Dashboard" subtitle="Real-time overview of procurement performance and spend insights.">
    <x-slot name="actions">
        <form method="GET" class="d-flex align-items-center gap-2 flex-wrap">
            <input type="date" name="date_from" value="{{ $dateFrom }}" class="form-control form-control-sm" style="width:140px;border-radius:8px;">
            <span class="text-muted">–</span>
            <input type="date" name="date_to" value="{{ $dateTo }}" class="form-control form-control-sm" style="width:140px;border-radius:8px;">
            <button type="submit" class="procure-btn"><i class="fas fa-filter"></i> Apply</button>
        </form>
    </x-slot>
</x-page-header>

<div class="row mb-4">
    <div class="col-xl col-lg-4 col-md-6 mb-3">
        <x-kpi-card label="Total Spend" :value="'SAR '.$fmt($kpi('total_spend')['value'])"
            :change="abs($kpi('total_spend')['change_pct']).'%'" :change-direction="$kpi('total_spend')['change_pct'] >= 0 ? 'up' : 'down'"
            change-period="vs previous period" icon="fas fa-dollar-sign" color="blue" />
    </div>
    <div class="col-xl col-lg-4 col-md-6 mb-3">
        <x-kpi-card label="Purchase Orders" :value="$kpi('purchase_orders_count')['value']"
            :change="abs($kpi('purchase_orders_count')['change_pct']).'%'" :change-direction="$kpi('purchase_orders_count')['change_pct'] >= 0 ? 'up' : 'down'"
            change-period="vs previous period" icon="fas fa-shopping-bag" color="green" link="{{ route('purchase-orders.index') }}" />
    </div>
    <div class="col-xl col-lg-4 col-md-6 mb-3">
        <x-kpi-card label="Suppliers" :value="$kpi('active_suppliers')['value']"
            :change="abs($kpi('active_suppliers')['change_pct']).'%'" :change-direction="$kpi('active_suppliers')['change_pct'] >= 0 ? 'up' : 'down'"
            change-period="vs previous period" icon="fas fa-truck" color="purple" link="{{ route('suppliers.index') }}" />
    </div>
    <div class="col-xl col-lg-4 col-md-6 mb-3">
        <x-kpi-card label="Contract Compliance" :value="$kpi('contract_compliance_pct')['value'].'%'"
            :change="abs($kpi('contract_compliance_pct')['change_pct']).'%'" :change-direction="$kpi('contract_compliance_pct')['change_pct'] >= 0 ? 'up' : 'down'"
            change-period="vs previous period" icon="fas fa-check-circle" color="teal" />
    </div>
    <div class="col-xl col-lg-4 col-md-6 mb-3">
        <x-kpi-card label="Savings" :value="'SAR '.$fmt($kpi('estimated_savings')['value'])"
            :change="abs($kpi('estimated_savings')['change_pct']).'%'" :change-direction="$kpi('estimated_savings')['change_pct'] >= 0 ? 'up' : 'down'"
            change-period="vs previous period" icon="fas fa-piggy-bank" color="cyan" link="{{ route('savings.index') }}" />
    </div>
</div>

<div class="row mb-4">
    <div class="col-lg-5 mb-3">
        <x-chart-card title="Spend Trend" :info-icon="true">
            <div class="chart-container"><canvas id="spendTrendChart"></canvas></div>
        </x-chart-card>
    </div>
    <div class="col-lg-4 mb-3">
        <x-chart-card title="Spend by Category">
            <div class="chart-container-sm"><canvas id="spendCategoryChart"></canvas></div>
        </x-chart-card>
    </div>
    <div class="col-lg-3 mb-3">
        <x-chart-card title="Supplier Performance">
            <div class="chart-container"><canvas id="supplierPerformanceChart"></canvas></div>
        </x-chart-card>
    </div>
</div>

<div class="row">
    <div class="col-lg-3 mb-3">
        <x-chart-card title="Purchase Orders by Status">
            <div class="po-status-layout">
                <div class="po-status-chart"><canvas id="poStatusChart"></canvas></div>
            </div>
        </x-chart-card>
    </div>
    <div class="col-lg-5 mb-3">
        <x-chart-card title="Recent Purchase Orders" :view-all-url="route('purchase-orders.index')">
            @if($recentPOs->isEmpty())
                <x-empty-state icon="fas fa-shopping-bag" title="No purchase orders" message="Create your first purchase order to get started." :action-url="route('purchase-orders.create')" />
            @else
            <table class="procure-table">
                <thead><tr><th>PO Number</th><th>Supplier</th><th>Amount</th><th>Status</th></tr></thead>
                <tbody>
                    @foreach($recentPOs as $po)
                    <tr>
                        <td><a href="{{ route('purchase-orders.show', $po) }}"><strong>{{ $po->po_number }}</strong></a></td>
                        <td>{{ $po->supplier->name ?? '—' }}</td>
                        <td>SAR {{ number_format($po->total_amount, 0) }}</td>
                        <td><x-status-badge :status="$po->status" /></td>
                    </tr>
                    @endforeach
                </tbody>
            </table>
            @endif
        </x-chart-card>
    </div>
    <div class="col-lg-4 mb-3">
        <x-chart-card title="Contracts Renewing Soon" view-all-url="{{ route('contracts.index') }}">
            @forelse($contractsRenewing as $contract)
            <div class="contract-item">
                <div>
                    <p class="contract-name">{{ $contract->name }}</p>
                    <p class="contract-supplier">{{ $contract->supplier->name ?? '—' }}</p>
                    <span class="contract-date"><i class="far fa-calendar-alt"></i> {{ ($contract->renewal_date ?? $contract->end_date)?->format('M d, Y') }}</span>
                </div>
                @php $days = now()->diffInDays($contract->renewal_date ?? $contract->end_date, false); @endphp
                <span class="days-badge {{ $days <= 30 ? 'urgent' : '' }}">{{ max(0, $days) }} days</span>
            </div>
            @empty
            <p class="text-muted text-center py-3" style="font-size:13px;">No contracts renewing soon.</p>
            @endforelse
        </x-chart-card>
        <div class="savings-insight mt-3">
            <div class="savings-icon"><i class="fas fa-piggy-bank"></i></div>
            <div class="savings-text">
                <h5>Estimated savings: SAR {{ number_format($savingsInsight['estimated_savings'] ?? 0, 0) }}</h5>
                <p>{{ $savingsInsight['open_recommendations'] ?? 0 }} open recommendations</p>
                <a href="{{ route('recommendations.index') }}" class="savings-link">View Recommendations <i class="fas fa-arrow-right"></i></a>
            </div>
        </div>
    </div>
</div>
@endsection

@push('scripts')
<script>
window.dashboardData = {
    spendTrend: @json($spendTrend),
    spendByCategory: @json($spendByCategory),
    supplierPerformance: @json($supplierPerformance->map(fn($s) => ['name' => $s->name, 'spend' => (float)($s->spend_total ?? 0)])),
    poByStatus: @json($poByStatus),
};
</script>
<script src="{{ asset('js/dashboard.js') }}"></script>
@endpush