@extends('admin.layout.app')

@section('body')
<div class="card card-page p-3 shadow-sm">

    {{-- Header --}}
    <div class="d-flex justify-content-between align-items-start flex-wrap gap-2 mb-3">
        <div>
            <h4 class="mb-1">{{ __('admin.courses') }}</h4>
            <small class="text-muted">{{ __('admin.courses_under_semesters_code_title_credit_hours') }}</small>

            @if($semester_id)
                @php
                    $s = $semesters->firstWhere('id', (int)$semester_id);
                    $p = $s?->program;
                    $d = $p?->department;
                    $f = $d?->faculty;
                    $u = $f?->university;
                @endphp
                <div class="mt-2 d-flex flex-wrap gap-2">
                    <span class="badge bg-info">
                        <i class="fas fa-calendar-alt me-1"></i> {{ __('admin.semester') }}: {{ $s->name ?? 'Selected' }}
                    </span>
                    @if($p) <span class="badge bg-light text-dark border"><i class="fas fa-graduation-cap me-1"></i> {{ $p->name }}</span> @endif
                    @if($d) <span class="badge bg-light text-dark border"><i class="fas fa-sitemap me-1"></i> {{ $d->name }}</span> @endif
                    @if($f) <span class="badge bg-light text-dark border"><i class="fas fa-layer-group me-1"></i> {{ $f->name }}</span> @endif
                    @if($u) <span class="badge bg-light text-dark border"><i class="fas fa-university me-1"></i> {{ $u->name }}</span> @endif
                </div>
            @endif
        </div>

        <div class="d-flex gap-2">
            <a href="{{ route('courses.create', ['semester_id'=>$semester_id]) }}" class="btn btn-primary">
                <i class="fas fa-plus me-2"></i> {{ __('admin.new_course') }}
            </a>
        </div>
    </div>

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

    {{-- Filters --}}
    <form method="GET" class="row g-2 align-items-end mb-3">
        <div class="col-md-4">
            <label class="form-label mb-0 small">{{ __('admin.search') }}</label>
            <input name="q" value="{{ $q }}" class="form-control" placeholder="{{ __('admin.search_by_title_or_code') }}">
        </div>

        <div class="col-md-6">
            <label class="form-label mb-0 small">{{ __('admin.semester') }}</label>
            <select name="semester_id" class="form-select">
                <option value="">{{ __('admin.all_semesters') }}</option>
                @foreach($semesters as $s)
                    <option value="{{ $s->id }}" @selected((string)$semester_id === (string)$s->id)>
                        {{ $s->name }}
                        @if($s->program) — {{ $s->program->name }} @endif
                        @if(optional($s->program)->department) — {{ $s->program->department->name }} @endif
                        @if(optional(optional($s->program)->department)->faculty) — {{ $s->program->department->faculty->name }} @endif
                        @if(optional(optional(optional($s->program)->department)->faculty)->university) — {{ $s->program->department->faculty->university->name }} @endif
                    </option>
                @endforeach
            </select>
        </div>

        <div class="col-md-2 d-flex gap-2">
            <button class="btn btn-outline-primary w-100">
                <i class="fas fa-filter me-1"></i> {{ __('admin.filter') }}
            </button>
            <a href="{{ route('courses.index') }}" class="btn btn-outline-secondary w-100">{{ __('admin.reset') }}</a>
        </div>
    </form>

    {{-- Table --}}
    <div class="table-responsive">
        <table class="table table-hover align-middle">
            <thead class="table-light">
                <tr>
                    <th style="width:80px;">#</th>
                    <th>{{ __('admin.course') }}</th>
                    <th style="width:160px;">{{ __('admin.code') }}</th>
                    <th style="width:140px;">{{ __('admin.credit_hours') }}</th>
                    <th style="width:260px;">{{ __('admin.semester') }}</th>
                    <th style="width:170px;">{{ __('admin.actions') }}</th>
                </tr>
            </thead>
            <tbody>
                @forelse($courses as $c)
                    <tr>
                        <td>{{ $c->id }}</td>
                        <td class="fw-semibold">
                            {{ $c->title }}
                            <div class="small text-muted">{{ __('admin.course_id') }}: {{ $c->id }}</div>
                        </td>
                        <td><span class="badge bg-light text-dark border">{{ $c->code ?? '—' }}</span></td>
                        <td>
                            <span class="badge {{ $c->credit_hours ? 'bg-success' : 'bg-secondary' }}">
                                {{ $c->credit_hours ?? '—' }}
                            </span>
                        </td>
                        <td>
                            <span class="badge bg-info">
                                <i class="fas fa-calendar-alt me-1"></i> {{ $c->semester->name ?? '—' }}
                            </span>
                        </td>
                        <td class="d-flex gap-1">
                            <a class="btn btn-sm btn-outline-info" href="{{ route('courses.show',$c->id) }}">
                                <i class="far fa-eye"></i>
                            </a>
                            <a class="btn btn-sm btn-outline-primary" href="{{ route('courses.edit',$c->id) }}">
                                <i class="far fa-edit"></i>
                            </a>
                            <form action="{{ route('courses.destroy',$c->id) }}" method="POST"
                                  onsubmit="return confirm('{{ __('admin.delete_this_course') }}');">
                                @csrf
                                @method('DELETE')
                                <button class="btn btn-sm btn-outline-danger">
                                    <i class="far fa-trash-alt"></i>
                                </button>
                            </form>
                        </td>
                    </tr>
                @empty
                    <tr>
                        <td colspan="6" class="text-center p-4">
                            <div class="text-muted">
                                <i class="fas fa-info-circle me-1"></i> {{ __('admin.no_courses_found') }}
                            </div>
                            <div class="mt-2">
                                <a href="{{ route('courses.create') }}" class="btn btn-sm btn-primary">
                                    <i class="fas fa-plus me-1"></i> {{ __('admin.add_first_course') }}
                                </a>
                            </div>
                        </td>
                    </tr>
                @endforelse
            </tbody>
        </table>
    </div>

    <div class="mt-3">{{ $courses->withQueryString()->links('pagination::bootstrap-4') }}</div>
</div>
@endsection