@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">
            <div>
                <h4 class="mb-0">{{ __('admin.edit_semester') }}#{{ $semester->id }}</h4>
                <small class="text-muted">{{ __('admin.update_semester_information') }}</small>
            </div>
            <a href="{{ route('semesters.index', ['program_id' => $semester->program_id]) }}"
                class="btn btn-outline-secondary">{{ __('admin.back') }}</a>
        </div>

        @if ($errors->any())
            <div class="alert alert-danger">
                <ul class="mb-0">
                    @foreach ($errors->all() as $e)
                        <li>{{ $e }}</li>
                    @endforeach
                </ul>
            </div>
        @endif

        <form action="{{ route('semesters.update', $semester->id) }}" method="POST">
            @csrf
            @method('PUT')

            <div class="row g-3">
                <div class="col-md-6">
                    <label class="form-label">{{ __('admin.program_2') }}</label>
                    <select name="program_id" class="form-select" required>
                        @foreach ($programs as $p)
                            <option value="{{ $p->id }}" @selected(old('program_id', $semester->program_id) == $p->id)>
                                {{ $p->name }}
                                @if ($p->department)
                                    — {{ $p->department->name }}
                                @endif
                                @if (optional($p->department)->faculty)
                                    — {{ $p->department->faculty->name }}
                                @endif
                                @if (optional(optional($p->department)->faculty)->university)
                                    — {{ $p->department->faculty->university->name }}
                                @endif
                            </option>
                        @endforeach
                    </select>
                </div>

                <div class="col-md-6">
                    <label class="form-label">{{ __('admin.semester_name') }}</label>
                    <input name="name" class="form-control" required value="{{ old('name', $semester->name) }}">
                </div>

                <div class="col-md-3">
                    <label class="form-label">{{ __('admin.number') }}</label>
                    <input type="number" min="1" max="50" name="number" class="form-control"
                        value="{{ old('number', $semester->number) }}">
                </div>

                <div class="col-md-4">
                    <label class="form-label">{{ __('admin.start_date') }}</label>
                    <input type="date" name="start_date" class="form-control"
                        value="{{ old('start_date', optional($semester->start_date)->format('Y-m-d')) }}">
                </div>

                <div class="col-md-5">
                    <label class="form-label">{{ __('admin.end_date') }}</label>
                    <input type="date" name="end_date" class="form-control"
                        value="{{ old('end_date', optional($semester->end_date)->format('Y-m-d')) }}">
                </div>

                {{-- Next Semester dropdown – only same-program semesters --}}
                <div class="col-md-12">
                    <label class="form-label">{{ __('admin.next_semester_after_completion') }}</label>
                    <select name="next_semester_id" class="form-select">
                        <option value="">{{ __('admin.none_end_of_program') }}</option>
                        @foreach ($allSemesters as $s)
                            <option value="{{ $s->id }}"
                                {{ old('next_semester_id', $semester->next_semester_id) == $s->id ? 'selected' : '' }}>
                                {{ $s->name }}
                                @if ($s->program)
                                    ({{ $s->program->name }}
                                    @if ($s->program->department)
                                        – {{ $s->program->department->name }}
                                        @if ($s->program->department->faculty)
                                            – {{ $s->program->department->faculty->name }}
                                            @if ($s->program->department->faculty->university)
                                                – {{ $s->program->department->faculty->university->name }}
                                            @endif
                                        @endif
                                    @endif)
                                @endif
                                @if ($s->start_date && $s->end_date)
                                    [{{ optional($s->start_date)->format('Y-m-d') }} →
                                    {{ optional($s->end_date)->format('Y-m-d') }}]
                                @endif
                            </option>
                        @endforeach
                    </select>
                    <small class="text-muted">{{ __('admin.only_semesters_from_the_same_program_are_shown') }}</small>
                </div>
                <div class="col-12">
                    <button class="btn btn-primary">
                        <i class="fas fa-save me-2"></i> {{ __('admin.update') }}
                    </button>
                </div>
            </div>
        </form>
    </div>
@endsection