@extends('layouts.app')

@section('content')
<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">Chat with Students 1</h5>
                    <small class="text-muted">Select a course to see enrolled students</small>
                </div>
            </div>
            <hr class="mb-0"/>
        </div>

        <div class="card-body">

            {{-- ✅ Course dropdown --}}
            <form method="GET" action="{{ route('teacher.chats.students') }}" class="row g-2 mb-3">
                <div class="col-md-6">
                    <label class="form-label">Course</label>
                    <select name="course_id" class="form-control" onchange="this.form.submit()">
                        <option value="">-- Select Course --</option>
                        @foreach($courses as $c)
                            <option value="{{ $c->id }}" @selected((string)$selectedCourseId === (string)$c->id)>
                                {{ $c->title }}
                            </option>
                        @endforeach
                    </select>
                </div>
            </form>

            @if(!$selectedCourseId)
                <div class="alert alert-info mb-0">
                    Please select a course to view students.
                </div>
            @else

                <div class="d-flex align-items-center justify-content-between mb-2">
                    <div>
                        <strong>Course:</strong> {{ $selectedCourse?->title }}
                    </div>
                    <div class="text-muted">
                        Total Students: {{ $students->count() }}
                    </div>
                </div>

                <div class="table-responsive">
                    <table @if($students->count() > 0) id="bookings-table" @endif
                           class="table table-bordered align-middle text-center">
                        <thead>
                            <tr>
                                <th style="width:80px;">#</th>
                                <th>Student Name</th>
                                <th style="width:220px;">Action</th>
                            </tr>
                        </thead>
                        <tbody>
                            @forelse($students as $idx => $stu)
                                <tr>
                                    <td>{{ $idx + 1 }}</td>
                                    <td>{{ $stu->name }}</td>
                                    <td>
                                        {{-- ✅ Start chat with course_id --}}
                                        <a class="btn btn-primary btn-sm"
                                           href="{{ route('chats.conversation', $stu->id) }}?course_id={{ $selectedCourseId }}">
                                            Start Chat
                                        </a>
                                    </td>
                                </tr>
                            @empty
                                <tr>
                                    <td colspan="3">No students enrolled in this course.</td>
                                </tr>
                            @endforelse
                        </tbody>
                    </table>
                </div>

            @endif

        </div>
    </div>
</div>
@endsection

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