@extends('layouts.side_bar')

@section('content')
<div class="container-fluid py-4">
    <div class="row justify-content-center">
        <div class="col-12 col-xl-10">
            <div class="card border-0 shadow-sm mb-4">
                <div class="card-body d-flex flex-wrap justify-content-between align-items-center gap-2 p-4">
                    <div>
                        <h2 class="h4 mb-1">{{ $assignment->title }}</h2>
                        <p class="text-secondary mb-0">
                            <span class="badge bg-info">{{ $assignment->course->title }}</span>
                            <span class="badge bg-secondary">{{ $assignment->subject->name }}</span>
                        </p>
                    </div>
                    <div class="d-flex gap-2">
                        <a href="{{ route('assignments.edit', $assignment) }}" class="btn btn-outline-primary">Edit</a>
                        <a href="{{ route('assignments.index') }}" class="btn btn-outline-secondary">Back</a>
                    </div>
                </div>
            </div>

            <div class="row mb-4">
                <div class="col-md-6">
                    <div class="card border-0 shadow-sm">
                        <div class="card-body">
                            <h5 class="card-title">Assignment Details</h5>
                            <p class="mb-2">
                                <strong>Due Date:</strong><br>
                                {{ $assignment->due_date->format('M d, Y \a\t h:i A') }}
                            </p>
                            <p class="mb-2">
                                <strong>Maximum Score:</strong><br>
                                {{ $assignment->max_score }} points
                            </p>
                            <p class="mb-0">
                                <strong>Status:</strong><br>
                                <span class="badge bg-{{ $assignment->status === 'open' ? 'success' : 'secondary' }}">
                                    {{ ucfirst($assignment->status) }}
                                </span>
                            </p>
                        </div>
                    </div>
                </div>

                <div class="col-md-6">
                    <div class="card border-0 shadow-sm">
                        <div class="card-body">
                            <h5 class="card-title">Submission Statistics</h5>
                            <p class="mb-2">
                                <strong>Total Submissions:</strong><br>
                                {{ $submissions->count() }} student(s)
                            </p>
                            <p class="mb-2">
                                <strong>Graded:</strong><br>
                                {{ $submissions->where('status', 'graded')->count() }} submissions
                            </p>
                            <p class="mb-0">
                                <strong>Pending:</strong><br>
                                {{ $submissions->where('status', 'submitted')->count() }} submissions
                            </p>
                        </div>
                    </div>
                </div>
            </div>

            @if ($assignment->description)
                <div class="card border-0 shadow-sm mb-4">
                    <div class="card-body">
                        <h5 class="card-title">Description</h5>
                        <p class="text-muted">{{ $assignment->description }}</p>
                    </div>
                </div>
            @endif

            <div class="card border-0 shadow-sm">
                <div class="card-header bg-transparent border-bottom-0 pt-4 px-4">
                    <h5 class="mb-0">Student Submissions</h5>
                </div>
                <div class="card-body p-0">
                    @if ($submissions->count() > 0)
                        <div class="table-responsive">
                            <table class="table table-hover mb-0">
                                <thead class="table-light">
                                    <tr>
                                        <th class="ps-4">Student</th>
                                        <th>Submission Date</th>
                                        <th>File</th>
                                        <th>Score</th>
                                        <th>Status</th>
                                        <th class="text-end pe-4">Actions</th>
                                    </tr>
                                </thead>
                                <tbody>
                                    @foreach ($submissions as $submission)
                                        <tr>
                                            <td class="ps-4">{{ $submission->student->name }}</td>
                                            <td>{{ $submission->created_at->format('M d, Y h:i A') }}</td>
                                            <td>
                                                @if ($submission->file_path)
                                                    <a href="{{ Storage::url($submission->file_path) }}" target="_blank" class="btn btn-sm btn-outline-secondary">View</a>
                                                @else
                                                    <span class="text-secondary">-</span>
                                                @endif
                                            </td>
                                            <td>
                                                @if ($submission->score !== null)
                                                    <strong>{{ $submission->score }}/{{ $assignment->max_score }}</strong>
                                                @else
                                                    <span class="text-secondary">Not graded</span>
                                                @endif
                                            </td>
                                            <td>
                                                <span class="badge bg-{{ $submission->status === 'graded' ? 'success' : 'warning' }}">
                                                    {{ ucfirst($submission->status) }}
                                                </span>
                                            </td>
                                            <td class="text-end pe-4">
                                                <button class="btn btn-sm btn-outline-primary" data-bs-toggle="modal" data-bs-target="#submissionModal{{ $submission->id }}">
                                                    Grade
                                                </button>
                                            </td>
                                        </tr>

                                        <!-- Grade Modal -->
                                        <div class="modal fade" id="submissionModal{{ $submission->id }}" tabindex="-1">
                                            <div class="modal-dialog">
                                                <div class="modal-content">
                                                    <div class="modal-header">
                                                        <h5 class="modal-title">Grade Submission - {{ $submission->student->name }}</h5>
                                                        <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
                                                    </div>
                                                    <form method="POST" action="#">
                                                        @csrf
                                                        @method('PATCH')
                                                        <div class="modal-body">
                                                            @if ($submission->submission_text)
                                                                <div class="mb-3">
                                                                    <label class="form-label">Submission Text</label>
                                                                    <div class="p-3 bg-light rounded">{{ $submission->submission_text }}</div>
                                                                </div>
                                                            @endif

                                                            @if ($submission->file_path)
                                                                <div class="mb-3">
                                                                    <label class="form-label">Submitted File</label>
                                                                    <div>
                                                                        @php $ext = strtolower(pathinfo($submission->file_path, PATHINFO_EXTENSION)); @endphp
                                                                        @if (in_array($ext, ['png','jpg','jpeg','gif']))
                                                                            <img src="{{ Storage::url($submission->file_path) }}" class="img-fluid rounded" alt="Submission file">
                                                                        @elseif ($ext === 'pdf')
                                                                            <div style="height:400px">
                                                                                <iframe src="{{ Storage::url($submission->file_path) }}" class="w-100 h-100" frameborder="0"></iframe>
                                                                            </div>
                                                                        @else
                                                                            <a href="{{ Storage::url($submission->file_path) }}" target="_blank">Download file</a>
                                                                        @endif
                                                                    </div>
                                                                </div>
                                                            @endif

                                                            <div class="mb-3">
                                                                <label for="score" class="form-label">Score (out of {{ $assignment->max_score }})</label>
                                                                <input type="number" class="form-control" name="score" min="0" max="{{ $assignment->max_score }}" value="{{ $submission->score }}">
                                                            </div>

                                                            <div class="mb-3">
                                                                <label for="feedback" class="form-label">Feedback</label>
                                                                <textarea class="form-control" name="feedback" rows="3">{{ $submission->feedback }}</textarea>
                                                            </div>
                                                        </div>
                                                        <div class="modal-footer">
                                                            <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
                                                            <button type="submit" class="btn btn-primary">Save Grade</button>
                                                        </div>
                                                    </form>
                                                </div>
                                            </div>
                                        </div>
                                    @endforeach
                                </tbody>
                            </table>
                        </div>
                    @else
                        <div class="text-center py-5">
                            <p class="text-secondary">No submissions yet</p>
                        </div>
                    @endif
                </div>
            </div>
        </div>
    </div>
</div>
@endsection