@extends('admin.layout.app')

@section('body')
<div class="card card-page p-3 shadow-sm">
    <div class="d-flex justify-content-between align-items-center mb-3">
        <h4>{{ __('admin.enter_marks_for_course') }}: {{ $course->title }} ({{ $course->code ?? '' }})</h4>
        <a href="{{ route('courses.index') }}" class="btn btn-secondary btn-sm">{{ __('admin.back_to_courses') }}</a>
    </div>

    @if(session('success'))
        <div class="alert alert-success">{{ session('success') }}</div>
    @endif
    @if(session('error'))
        <div class="alert alert-danger">{{ session('error') }}</div>
    @endif
    @if($errors->any())
        <div class="alert alert-danger">{{ $errors->first() }}</div>
    @endif

    <form method="GET" action="{{ route('exam.courses.marks.index', $course->id) }}" class="row g-3 align-items-end mb-4">
        <div class="col-md-5">
            <label class="form-label">Exam Type</label>
            <select name="exam_type_id" class="form-select" required>
                <option value="">Select exam type</option>
                @foreach($examTypes as $type)
                    <option value="{{ $type->id }}" @selected($selectedExamType && (int) $selectedExamType->id === (int) $type->id)>
                        {{ $type->name }} ({{ rtrim(rtrim(number_format((float) $type->weight, 2), '0'), '.') }}%)
                    </option>
                @endforeach
            </select>
        </div>
        <div class="col-md-2">
            <button type="submit" class="btn btn-primary w-100">Open Mark Sheet</button>
        </div>
    </form>

    @if($selectedExamType)
    <form method="POST" action="{{ route('exam.courses.marks.store', $course->id) }}">
        @csrf
        <input type="hidden" name="exam_type_id" value="{{ $selectedExamType->id }}">
        <div class="d-flex flex-wrap gap-3 align-items-end mb-3">
            <div>
                <span class="badge bg-primary">{{ $selectedExamType->name }}</span>
                <span class="badge bg-light text-dark border">Weight: {{ rtrim(rtrim(number_format((float) $selectedExamType->weight, 2), '0'), '.') }}%</span>
            </div>
            <div>
                <label class="form-label mb-1">Max Marks</label>
                <input type="number" name="max_marks" value="{{ old('max_marks', $existingMarks->first()?->max_marks ?? 100) }}" min="0.01" step="0.01" class="form-control form-control-sm" style="width:120px" required>
            </div>
        </div>
        <div class="table-responsive">
            <table class="table table-bordered align-middle">
                <thead class="table-light">
                     <tr>
                        <th style="min-width:180px">{{ __('admin.student_2') }}</th>
                        <th class="text-center" style="width:180px">{{ $selectedExamType->name }} Marks</th>
                     </tr>
                </thead>
                <tbody>
                    @foreach($students as $enrollment)
                     <tr>
                        <td>{{ $enrollment->student->name }}<br><small class="text-muted">{{ $enrollment->student->email }}</small></td>
                        @php $existing = $existingMarks->get($enrollment->student_user_id); @endphp
                        <td>
                            <input type="number" step="0.01" min="0" name="marks[{{ $enrollment->student_user_id }}]"
                                   value="{{ old('marks.'.$enrollment->student_user_id, $existing?->marks_obtained) }}" class="form-control form-control-sm">
                        </td>
                     </tr>
                    @endforeach
                </tbody>
            </table>
        </div>
        <button type="submit" class="btn btn-primary">{{ __('admin.save_marks') }}</button>
    </form>
    @else
        <div class="alert alert-info mb-0">Select an exam type first to record marks under that exam type.</div>
    @endif
</div>
@endsection