@extends('layouts.app')

@section('content')
@php
    $authUser = auth()->user();
@endphp
<div class="container-xxl flex-grow-1 container-p-y">
    <div class="card">
        <div class="card-header">
            <div class="row align-items-center">
                <div class="col">
                    <h5 class="mb-0">Course Lectures</h5>
                </div>
                <div class="col text-end">
                    @can('lectures create')
                        <a href="{{ route('lectures.create') }}" class="btn btn-primary">Add Lecture</a>
                    @endcan
                </div>
            </div>
            <hr/>
        </div>

        <div class="card-body">
            @if(session('success'))
                <div class="alert alert-success">{{ session('success') }}</div>
            @endif

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

            <div class="table-responsive">
                <table class="table" id="lectures-table">
                    <thead>
                        <tr>
                            <th>ID</th>
                            <th>Lecture</th>
                            <th>Course</th>
                            <th>Teacher</th>
                            <th>Uploaded By</th>
                            <th>Video Size</th>
                            <th>Uploaded</th>
                            <th style="width: 220px;">Action</th>
                        </tr>
                    </thead>
                    <tbody>
                        @foreach($lectures as $lecture)
                            @php
                                $ownsLecture = $authUser?->hasRole('master-admin')
                                    || (int) ($lecture->created_by ?? 0) === (int) ($authUser->id ?? 0)
                                    || (int) ($lecture->course?->teacher_id ?? 0) === (int) ($authUser->id ?? 0);

                                $canEdit = $ownsLecture && $authUser?->can('lectures update');
                                $canDelete = $ownsLecture && $authUser?->can('lectures delete');
                            @endphp
                            <tr>
                                <td>{{ $lecture->id }}</td>
                                <td>
                                    <div class="fw-semibold">{{ $lecture->title }}</div>
                                    <small class="text-muted">{{ \Illuminate\Support\Str::limit($lecture->description, 80) ?: 'No description' }}</small>
                                </td>
                                <td>{{ $lecture->course?->title ?? 'N/A' }}</td>
                                <td>{{ $lecture->course?->teacher?->name ?? 'N/A' }}</td>
                                <td>{{ $lecture->creator?->name ?? 'N/A' }}</td>
                                <td>{{ $lecture->video_size ? number_format($lecture->video_size / 1048576, 2) . ' MB' : 'N/A' }}</td>
                                <td>{{ $lecture->created_at?->format('Y-m-d') }}</td>
                                <td>
                                    <a href="{{ route('lectures.show', $lecture) }}" class="btn btn-sm btn-info">Watch</a>

                                    @if($canEdit)
                                        <a href="{{ route('lectures.edit', $lecture) }}" class="btn btn-sm btn-warning">Edit</a>
                                    @endif

                                    @if($canDelete)
                                        <form method="POST" action="{{ route('lectures.destroy', $lecture) }}" class="d-inline"
                                            onsubmit="return confirm('Delete this lecture?');">
                                            @csrf
                                            @method('DELETE')
                                            <button type="submit" class="btn btn-sm btn-danger">Delete</button>
                                        </form>
                                    @endif
                                </td>
                            </tr>
                        @endforeach
                    </tbody>
                </table>
            </div>
        </div>
    </div>
</div>
@endsection

@push('script')
<script>
$(document).ready(function () {
    $('#lectures-table').DataTable({
        responsive: false,
        scrollX: true,
        pageLength: 10,
        lengthMenu: [5, 10, 25, 50, 100],
        order: [[0, 'desc']],
        columnDefs: [{ orderable: false, targets: -1 }]
    });
});
</script>
@endpush