@extends('layouts.admin')
@section('content')
<div class="space-y-6">
    <div class="flex items-center justify-between">
        <div>
            <a href="{{ route('admin.subjects.index') }}" class="text-graphite-400 hover:text-ink-900 text-sm">&larr; Back to Subjects</a>
            <h1 class="text-2xl font-bold font-display text-ink-900 mt-1">{{ $subject->name }}</h1>
        </div>
        <div class="flex items-center gap-3">
            <a href="{{ route('admin.subjects.edit', $subject) }}" class="px-4 py-2 bg-seal-blue-700 text-white rounded hover:bg-seal-blue-700/90 transition">Edit</a>
            <form action="{{ route('admin.subjects.destroy', $subject) }}" method="POST" onsubmit="return confirm('Are you sure you want to delete this subject?')">
                @csrf
                @method('DELETE')
                <button type="submit" class="px-4 py-2 bg-redpen-600 text-white rounded hover:bg-redpen-600/90 transition">Delete</button>
            </form>
        </div>
    </div>

    <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-5 gap-6">
        <div class="bg-white rounded border border-graphite-400/30 p-4">
            <p class="text-sm text-graphite-400">Code</p>
            <p class="text-lg font-semibold text-ink-900">{{ $subject->code }}</p>
        </div>
        <div class="bg-white rounded border border-graphite-400/30 p-4">
            <p class="text-sm text-graphite-400">Exam</p>
            <p class="text-lg font-semibold text-ink-900">{{ $subject->exam->name ?? 'N/A' }}</p>
        </div>
        <div class="bg-white rounded border border-graphite-400/30 p-4">
            <p class="text-sm text-graphite-400">Duration (min)</p>
            <p class="text-lg font-semibold text-ink-900">{{ $subject->duration_minutes }}</p>
        </div>
        <div class="bg-white rounded border border-graphite-400/30 p-4">
            <p class="text-sm text-graphite-400">Total Marks</p>
            <p class="text-lg font-semibold text-ink-900">{{ $subject->total_marks }}</p>
        </div>
        <div class="bg-white rounded border border-graphite-400/30 p-4">
            <p class="text-sm text-graphite-400">Answer Sheets</p>
            <p class="text-lg font-semibold text-ink-900">{{ $subject->answer_sheets_count ?? $subject->answer_sheets?->count() ?? 0 }}</p>
        </div>
    </div>

    <div class="grid grid-cols-1 lg:grid-cols-2 gap-6">
        <div class="bg-white rounded border border-graphite-400/30 overflow-hidden">
            <div class="px-6 py-4 border-b border-graphite-400/30">
                <h2 class="text-lg font-semibold text-ink-900">Schedules</h2>
            </div>
            <table class="min-w-full divide-y divide-graphite-400/30">
                <thead class="bg-paper-50">
                    <tr>
                        <th class="px-6 py-3 text-left text-xs font-medium text-graphite-400 uppercase tracking-wider">Date</th>
                        <th class="px-6 py-3 text-left text-xs font-medium text-graphite-400 uppercase tracking-wider">Time</th>
                        <th class="px-6 py-3 text-left text-xs font-medium text-graphite-400 uppercase tracking-wider">Center</th>
                    </tr>
                </thead>
                <tbody class="bg-white divide-y divide-graphite-400/30">
                    @forelse($subject->schedules as $schedule)
                    <tr class="hover:bg-paper-50">
                        <td class="px-6 py-4 whitespace-nowrap text-sm text-ink-900">{{ $schedule->date?->format('d M Y') ?? 'N/A' }}</td>
                        <td class="px-6 py-4 whitespace-nowrap text-sm text-ink-600">{{ $schedule->start_time ?? '' }} - {{ $schedule->end_time ?? '' }}</td>
                        <td class="px-6 py-4 whitespace-nowrap text-sm text-ink-600">{{ $schedule->center->name ?? 'N/A' }}</td>
                    </tr>
                    @empty
                    <tr>
                        <td colspan="3" class="px-6 py-8 text-center text-sm text-graphite-400">No schedules found.</td>
                    </tr>
                    @endforelse
                </tbody>
            </table>
        </div>

        <div class="bg-white rounded border border-graphite-400/30 overflow-hidden">
            <div class="px-6 py-4 border-b border-graphite-400/30">
                <h2 class="text-lg font-semibold text-ink-900">Question Papers</h2>
            </div>
            <table class="min-w-full divide-y divide-graphite-400/30">
                <thead class="bg-paper-50">
                    <tr>
                        <th class="px-6 py-3 text-left text-xs font-medium text-graphite-400 uppercase tracking-wider">Title</th>
                        <th class="px-6 py-3 text-left text-xs font-medium text-graphite-400 uppercase tracking-wider">Type</th>
                        <th class="px-6 py-3 text-left text-xs font-medium text-graphite-400 uppercase tracking-wider">Questions</th>
                    </tr>
                </thead>
                <tbody class="bg-white divide-y divide-graphite-400/30">
                    @forelse($subject->question_papers ?? [] as $paper)
                    <tr class="hover:bg-paper-50">
                        <td class="px-6 py-4 whitespace-nowrap text-sm font-medium text-ink-900">{{ $paper->title ?? 'Untitled' }}</td>
                        <td class="px-6 py-4 whitespace-nowrap text-sm text-ink-600">{{ ucfirst($paper->type ?? 'N/A') }}</td>
                        <td class="px-6 py-4 whitespace-nowrap text-sm text-ink-600">{{ $paper->questions?->count() ?? 0 }}</td>
                    </tr>
                    @empty
                    <tr>
                        <td colspan="3" class="px-6 py-8 text-center text-sm text-graphite-400">No question papers found.</td>
                    </tr>
                    @endforelse
                </tbody>
            </table>
        </div>
    </div>

    <div class="bg-white rounded border border-graphite-400/30 overflow-hidden">
        <div class="px-6 py-4 border-b border-graphite-400/30">
            <h2 class="text-lg font-semibold text-ink-900">Results ({{ $subject->results_count ?? $subject->results?->count() ?? 0 }})</h2>
        </div>
        <table class="min-w-full divide-y divide-graphite-400/30">
            <thead class="bg-paper-50">
                <tr>
                    <th class="px-6 py-3 text-left text-xs font-medium text-graphite-400 uppercase tracking-wider">Student</th>
                    <th class="px-6 py-3 text-left text-xs font-medium text-graphite-400 uppercase tracking-wider">Score</th>
                    <th class="px-6 py-3 text-left text-xs font-medium text-graphite-400 uppercase tracking-wider">Status</th>
                </tr>
            </thead>
            <tbody class="bg-white divide-y divide-graphite-400/30">
                @forelse($subject->results as $result)
                <tr class="hover:bg-paper-50">
                    <td class="px-6 py-4 whitespace-nowrap text-sm text-ink-900">{{ $result->student->name ?? 'N/A' }}</td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm text-ink-600">{{ $result->score ?? 'N/A' }}</td>
                    <td class="px-6 py-4 whitespace-nowrap text-sm text-ink-600">{{ ucfirst($result->status ?? 'pending') }}</td>
                </tr>
                @empty
                <tr>
                    <td colspan="3" class="px-6 py-8 text-center text-sm text-graphite-400">No results found.</td>
                </tr>
                @endforelse
            </tbody>
        </table>
    </div>
</div>
@endsection