@extends('layouts.school')
@section('title', 'Subscription & Billing')
@section('header', 'Subscription & Billing')

@section('content')
    @if(session('success'))
        <div class="mb-6 rounded-lg border border-emerald-200 bg-emerald-50 px-4 py-3 text-sm text-emerald-800">
            {{ session('success') }}
        </div>
    @endif
    @if(session('error'))
        <div class="mb-6 rounded-lg border border-red-200 bg-red-50 px-4 py-3 text-sm text-red-800">
            {{ session('error') }}
        </div>
    @endif

    <div class="grid gap-6 lg:grid-cols-3">
        <div class="lg:col-span-2 space-y-6">
            {{-- Current subscription --}}
            <div class="rounded-xl bg-white shadow-sm ring-1 ring-gray-900/5 p-6">
                <h2 class="text-base font-semibold text-gray-900">Current subscription</h2>
                @if($currentSubscription)
                    <div class="mt-4 grid gap-4 sm:grid-cols-2">
                        <div>
                            <p class="text-xs text-gray-500">Plan</p>
                            <p class="text-sm font-semibold text-gray-900">{{ $currentSubscription->plan?->name ?? '—' }}</p>
                        </div>
                        <div>
                            <p class="text-xs text-gray-500">Status</p>
                            <span class="mt-1 inline-flex rounded-full px-2.5 py-0.5 text-xs font-medium
                                {{ $currentSubscription->isActive() ? 'bg-emerald-100 text-emerald-700' : 'bg-amber-100 text-amber-700' }}">
                                {{ ucfirst($currentSubscription->status->value) }}
                            </span>
                        </div>
                        <div>
                            <p class="text-xs text-gray-500">Starts</p>
                            <p class="text-sm text-gray-900">{{ optional($currentSubscription->starts_at)->toDateString() }}</p>
                        </div>
                        <div>
                            <p class="text-xs text-gray-500">Ends / renews</p>
                            <p class="text-sm text-gray-900">{{ optional($currentSubscription->ends_at)->toDateString() }}</p>
                        </div>
                        @if($currentSubscription->payment_amount)
                            <div>
                                <p class="text-xs text-gray-500">Last paid</p>
                                <p class="text-sm text-gray-900">&#8358;{{ number_format((float) $currentSubscription->payment_amount, 2) }}</p>
                            </div>
                        @endif
                        @if($currentSubscription->ends_at)
                            @php
                                $days = (int) now()->diffInDays($currentSubscription->ends_at, false);
                            @endphp
                            <div>
                                <p class="text-xs text-gray-500">Days remaining</p>
                                <p class="text-sm {{ $days <= 7 ? 'font-semibold text-amber-600' : 'text-gray-900' }}">
                                    @if($days < 0) Expired {{ abs($days) }}d ago
                                    @elseif($days === 0) Due today
                                    @else {{ $days }} days
                                    @endif
                                </p>
                            </div>
                        @endif
                    </div>
                    @if($currentSubscription->plan?->features)
                        <div class="mt-4 flex flex-wrap gap-1.5">
                            @foreach($currentSubscription->plan->features as $feature)
                                <span class="rounded-full bg-slate-100 px-2.5 py-0.5 text-[11px] font-medium text-slate-600">
                                    {{ ucwords(str_replace('_', ' ', $feature)) }}
                                </span>
                            @endforeach
                        </div>
                    @endif
                @else
                    <p class="mt-3 text-sm text-gray-500">No active subscription yet — choose a plan below to get started.</p>
                @endif
            </div>

            {{-- Unpaid quotes --}}
            @if($issuedInvoices->isNotEmpty())
                <div class="rounded-xl bg-white shadow-sm ring-1 ring-gray-900/5 p-6">
                    <h2 class="text-base font-semibold text-gray-900">Outstanding invoices</h2>
                    <div class="mt-4 space-y-3">
                        @foreach($issuedInvoices as $invoice)
                            <div class="flex flex-wrap items-center justify-between gap-3 rounded-lg border border-gray-100 px-4 py-3">
                                <div>
                                    <p class="text-sm font-medium text-gray-900">{{ $invoice->invoice_ref }}</p>
                                    <p class="text-xs text-gray-500">
                                        {{ $invoice->subscription?->plan?->name ?? 'Subscription' }}
                                        · {{ number_format($invoice->total, 2) }} {{ $invoice->currency }}
                                    </p>
                                </div>
                                <form method="POST" action="{{ route('school.billing.subscribe', $school->id) }}" class="flex items-center gap-3">
                                    @csrf
                                    <input type="hidden" name="invoice_id" value="{{ $invoice->id }}">
                                    <span class="text-sm font-semibold text-gray-900">&#8358;{{ number_format($invoice->total, 2) }}</span>
                                    <button type="submit"
                                            class="rounded-lg bg-primary-600 px-3 py-1.5 text-xs font-semibold text-white shadow-sm hover:bg-primary-700 transition-colors">
                                        Pay now
                                    </button>
                                </form>
                            </div>
                        @endforeach
                    </div>
                </div>
            @endif

            {{-- Billing history --}}
            @if($billingHistory->isNotEmpty())
                <div class="rounded-xl bg-white shadow-sm ring-1 ring-gray-900/5 p-6">
                    <h2 class="text-base font-semibold text-gray-900">Billing history</h2>
                    <div class="mt-4 divide-y divide-gray-100">
                        @foreach($billingHistory as $invoice)
                            <div class="flex items-center justify-between gap-3 py-3">
                                <div class="min-w-0">
                                    <p class="text-sm font-medium text-gray-900">{{ $invoice->invoice_ref }}</p>
                                    <p class="text-xs text-gray-500">
                                        {{ $invoice->subscription?->plan?->name ?? 'Subscription' }}
                                        · {{ optional($invoice->period_start)->format('d M Y') }} → {{ optional($invoice->period_end)->format('d M Y') }}
                                    </p>
                                </div>
                                <div class="text-right shrink-0">
                                    <p class="text-sm font-semibold tabular-nums text-gray-900">&#8358;{{ number_format((float) $invoice->total, 2) }}</p>
                                    <span class="inline-flex rounded-full px-2.5 py-0.5 text-[11px] font-medium
                                        {{ $invoice->status === 'paid' ? 'bg-emerald-100 text-emerald-700' : '' }}
                                        {{ $invoice->status === 'failed' ? 'bg-red-100 text-red-700' : '' }}
                                        {{ $invoice->status === 'cancelled' ? 'bg-gray-100 text-gray-600' : '' }}">
                                        {{ ucfirst($invoice->status) }}
                                    </span>
                                </div>
                            </div>
                        @endforeach
                    </div>
                </div>
            @endif

            {{-- Plan catalogue with live quotes --}}
            <div class="rounded-xl bg-white shadow-sm ring-1 ring-gray-900/5 p-6">
                <h2 class="text-base font-semibold text-gray-900">Available plans</h2>
                <div class="mt-4 grid gap-4 sm:grid-cols-3">
                    @foreach($plans as $plan)
                        @php $quote = $quotes[$plan->id] ?? null; @endphp
                        <div class="flex flex-col rounded-xl border border-gray-200 p-5">
                            <h3 class="text-sm font-semibold text-gray-900">{{ $plan->name }}</h3>
                            <p class="mt-1 text-xs text-gray-500">{{ $plan->description }}</p>
                            <p class="mt-4 text-xl font-display font-bold text-gray-900">
                                @if($plan->billingType() === 'trial')
                                    Free
                                @elseif($plan->billingType() === 'per_student')
                                    &#8358;{{ number_format((float) ($plan->per_student_price ?? 0), 0) }}<span class="text-xs font-normal text-gray-400">/student</span>
                                @else
                                    &#8358;{{ number_format($plan->price, 0) }}<span class="text-xs font-normal text-gray-400">/month</span>
                                @endif
                            </p>
                            @if($quote)
                                <p class="mt-2 text-xs text-gray-500">
                                    Quote today: &#8358;{{ number_format($quote['total'], 2) }}
                                </p>
                                <p class="mt-0.5 text-[11px] text-gray-400">{{ $quote['period_start'] }} – {{ $quote['period_end'] }}</p>
                            @endif
                            <div class="mt-4 flex-1"></div>
                            <form method="POST" action="{{ route('school.billing.subscribe', $school->id) }}">
                                @csrf
                                <input type="hidden" name="plan_id" value="{{ $plan->id }}">
                                <button type="submit"
                                        class="w-full rounded-lg bg-primary-600 px-4 py-2 text-sm font-semibold text-white shadow-sm hover:bg-primary-700 transition-colors">
                                    Pay for this plan
                                </button>
                            </form>
                        </div>
                    @endforeach
                </div>
                <p class="mt-4 text-xs text-gray-400">
                    Prices are snapshot when you pay. Per-student plans bill the number of active students at that time.
                </p>
            </div>
        </div>

        <div class="space-y-6">
            {{-- Usage --}}
            <div class="rounded-xl bg-white shadow-sm ring-1 ring-gray-900/5 p-6">
                <h2 class="text-base font-semibold text-gray-900">Plan limits</h2>
                @if($school->plan)
                    @php
                        $limits = [
                            'Students' => ['used' => $usage['students'], 'max' => $school->plan->max_students],
                            'Teachers' => ['used' => $usage['teachers'], 'max' => $school->plan->max_teachers],
                            'Classes' => ['used' => $usage['classes'], 'max' => $school->plan->max_classes],
                        ];
                    @endphp
                    <ul class="mt-3 space-y-3 text-sm text-gray-600">
                        @foreach($limits as $label => $row)
                            <li>
                                <div class="flex items-center justify-between">
                                    <span>{{ $label }}</span>
                                    <span class="tabular-nums {{ $row['max'] && $row['used'] >= $row['max'] ? 'font-semibold text-amber-600' : 'text-gray-500' }}">
                                        {{ $row['used'] }} / {{ $row['max'] ?? '∞' }}
                                    </span>
                                </div>
                                <div class="mt-1.5 h-1.5 w-full overflow-hidden rounded-full bg-gray-100">
                                    <div class="h-full rounded-full bg-primary-500"
                                         style="width: {{ $row['max'] ? min(100, round(($row['used'] / $row['max']) * 100)) : 0 }}%"></div>
                                </div>
                            </li>
                        @endforeach
                    </ul>
                    <p class="mt-3 text-[11px] text-gray-400">Usage counts your active student, teacher and class records.</p>
                @else
                    <p class="mt-3 text-sm text-gray-500">No plan assigned.</p>
                @endif
            </div>
        </div>
    </div>
@endsection