@extends('layouts.candidate')
@section('title', '考題商品')
@section('content')

<div class="bg-white dark:bg-slate-900 rounded-xl shadow-lg border border-gray-100 dark:border-slate-800 p-6 mb-8">
    <h2 class="text-lg font-bold text-gray-900 dark:text-white mb-3">輸入序號兌換</h2>
    <form action="{{ route('candidate.redeem') }}" method="POST" class="flex flex-wrap gap-3">
        @csrf
        <input type="text" name="code" placeholder="例：VPQ6-9QHA-JAQW-W65M" required
               class="flex-1 min-w-[200px] px-4 py-2.5 rounded-lg border-2 border-gray-200 dark:border-slate-700 bg-gray-50 dark:bg-slate-800 text-gray-900 dark:text-white font-mono focus:outline-none focus:border-blue-500">
        <button type="submit" class="px-6 py-2.5 bg-blue-600 text-white rounded-lg font-medium hover:bg-blue-700">兌換</button>
    </form>
    <p class="text-xs text-gray-400 mt-2">序號可能是「整包」或「單一科目」，兌換後會自動顯示在下方「我的購買」</p>
</div>

<div class="mb-8">
    <h2 class="text-lg font-bold text-gray-900 dark:text-white mb-3">我的購買</h2>
    <div class="bg-white dark:bg-slate-900 rounded-xl shadow-lg border border-gray-100 dark:border-slate-800 overflow-hidden">
        @forelse($purchases as $purchase)
        @php $product = $purchase->examProduct; @endphp
        <div class="p-4 border-b last:border-b-0 border-gray-100 dark:border-slate-800">
            <div class="flex items-center gap-2">
                <span class="font-semibold text-gray-900 dark:text-white">{{ $product->title }}</span>
                <span class="px-2 py-0.5 rounded-full text-xs font-medium bg-blue-50 dark:bg-blue-900/30 text-blue-700 dark:text-blue-300">
                    {{ $purchase->subject?->name ?? '整包' }}
                </span>
            </div>
            <div class="mt-2 flex flex-wrap gap-2">
                @foreach($product->files as $file)
                    @if($purchase->subject === null || $file->exam_product_subject_id === $purchase->subject->id)
                    <a href="{{ route('candidate.products.download', [$product, $file]) }}"
                       class="inline-flex items-center gap-1.5 px-3 py-1.5 text-xs rounded-lg bg-blue-50 dark:bg-blue-900/30 text-blue-700 dark:text-blue-300 hover:bg-blue-100 dark:hover:bg-blue-900/50 transition-colors">
                        {{ $file->subject ? $file->subject->name . '：' : '' }}{{ $file->original_name }}
                    </a>
                    @endif
                @endforeach
            </div>
        </div>
        @empty
        <div class="p-8 text-center text-gray-400 text-sm">尚未購買任何考題商品</div>
        @endforelse
    </div>
</div>

<div>
    <h2 class="text-lg font-bold text-gray-900 dark:text-white mb-3">商品列表</h2>
    <div class="grid grid-cols-1 sm:grid-cols-2 gap-4">
        @forelse($products as $product)
        @php $wholeProductOwned = $candidate->hasAccessTo($product); @endphp
        <div class="bg-white dark:bg-slate-900 rounded-xl shadow-lg border border-gray-100 dark:border-slate-800 p-5">
            <div class="font-semibold text-gray-900 dark:text-white">{{ $product->title }}</div>
            @if($product->description)
            <p class="text-sm text-gray-600 dark:text-gray-300 mt-2">{{ $product->description }}</p>
            @endif

            <div class="mt-3 flex items-center justify-between">
                <div class="text-xs text-gray-400">整包</div>
                <div class="flex items-center gap-2">
                    @if($product->isDiscountActive())
                        <span class="line-through text-gray-400 text-xs">{{ number_format($product->price, 0) }}</span>
                        <span class="text-red-600 dark:text-red-400 font-bold">{{ number_format($product->discount_price, 0) }}</span>
                    @else
                        <span class="text-gray-900 dark:text-white font-bold">{{ number_format($product->price, 0) }}</span>
                    @endif
                    @if($wholeProductOwned)
                        <span class="px-2 py-0.5 rounded-full text-xs font-medium bg-green-100 text-green-700 dark:bg-green-900/30 dark:text-green-300">已購買</span>
                    @elseif(!$product->isPurchasable())
                        <span class="px-2 py-0.5 rounded-full text-xs font-medium bg-gray-100 text-gray-500 dark:bg-slate-800 dark:text-gray-400">暫不供應</span>
                    @endif
                </div>
            </div>

            @if($product->subjects->isNotEmpty())
            <div class="mt-3 pt-3 border-t border-gray-100 dark:border-slate-800 space-y-1.5">
                @foreach($product->subjects as $subject)
                @php $subjectOwned = $wholeProductOwned || $candidate->hasAccessTo($product, $subject); @endphp
                <div class="flex items-center justify-between text-sm">
                    <span class="text-gray-600 dark:text-gray-300">{{ $subject->name }}</span>
                    <div class="flex items-center gap-2">
                        @if($subject->isDiscountActive())
                            <span class="line-through text-gray-400 text-xs">{{ number_format($subject->price, 0) }}</span>
                            <span class="text-red-600 dark:text-red-400 font-semibold text-xs">{{ number_format($subject->discount_price, 0) }}</span>
                        @else
                            <span class="text-gray-700 dark:text-gray-200 text-xs">{{ number_format($subject->price, 0) }}</span>
                        @endif
                        @if($subjectOwned)
                            <span class="px-2 py-0.5 rounded-full text-[11px] font-medium bg-green-100 text-green-700 dark:bg-green-900/30 dark:text-green-300">已購買</span>
                        @elseif(!$subject->isPurchasable())
                            <span class="px-2 py-0.5 rounded-full text-[11px] font-medium bg-gray-100 text-gray-500 dark:bg-slate-800 dark:text-gray-400">暫不供應</span>
                        @endif
                    </div>
                </div>
                @endforeach
            </div>
            @endif

            <p class="text-xs text-gray-400 mt-3">目前僅支援序號兌換或客服開通，可整包購買，也可只買其中一科</p>
        </div>
        @empty
        <div class="col-span-2 p-8 text-center text-gray-400 text-sm bg-white dark:bg-slate-900 rounded-xl border border-gray-100 dark:border-slate-800">目前沒有上架中的商品</div>
        @endforelse
    </div>
</div>
@endsection