@extends('layouts.app')

@section('title', 'Mata Kuliah - SIAKAD')
@section('page-title', 'Mata Kuliah')

@section('content')
<div class="row">
    <div class="col-12">
        <div class="card">
            <div class="card-header">
                <div>
                    <h5 class="mb-0">Manajemen Mata Kuliah</h5>
                    <small class="text-muted">Kelola data mata kuliah</small>
                </div>
                <a href="{{ route('admin.matakuliah.create') }}" class="btn btn-primary">
                    <i class="bi bi-plus-lg me-2"></i>Tambah Mata Kuliah
                </a>
            </div>
            <div class="card-body">
                <!-- Search & Filter Form -->
                <form method="GET" action="{{ route('admin.matakuliah.index') }}" class="row g-2 mb-3" id="filterForm">
                    <div class="col-md-3">
                        <div class="search-input-wrapper">
                            <input type="text"
                                   name="search"
                                   class="form-control"
                                   id="searchInput"
                                   placeholder="Cari Kode atau Nama MK..."
                                   value="{{ request('search') }}"
                                   autocomplete="off">
                            <div class="search-spinner d-none position-absolute top-50 end-0 translate-middle-y me-3">
                                <span class="spinner-border spinner-border-sm text-primary" role="status"></span>
                            </div>
                            <div id="searchDropdown" class="search-dropdown d-none"></div>
                        </div>
                    </div>
                    <div class="col-md-2">
                        <select name="prodi_id" class="form-select" id="prodiFilter">
                            <option value="">Semua Prodi</option>
                            @foreach($prodis as $prodi)
                                <option value="{{ $prodi->id }}" {{ request('prodi_id') == $prodi->id ? 'selected' : '' }}>
                                    {{ $prodi->nama }}
                                </option>
                            @endforeach
                        </select>
                    </div>
                    <div class="col-md-2">
                        <select name="semester" class="form-select" id="semesterFilter">
                            <option value="">Semua Semester</option>
                            @for($i = 1; $i <= 14; $i++)
                                <option value="{{ $i }}" {{ request('semester') == $i ? 'selected' : '' }}>Semester {{ $i }}</option>
                            @endfor
                        </select>
                    </div>
                    <div class="col-md-2">
                        <select name="is_active" class="form-select" id="statusFilter">
                            <option value="">Semua Status</option>
                            <option value="1" {{ request('is_active') === '1' ? 'selected' : '' }}>Aktif</option>
                            <option value="0" {{ request('is_active') === '0' ? 'selected' : '' }}>Nonaktif</option>
                        </select>
                    </div>
                    <div class="col-md-3">
                        <button type="submit" class="btn btn-primary">
                            <i class="bi bi-search me-2"></i>Filter
                        </button>
                        <a href="{{ route('admin.matakuliah.index') }}" class="btn btn-outline-secondary">
                            <i class="bi bi-x-lg"></i>
                        </a>
                    </div>
                </form>
            </div>
            <div class="table-responsive">
                <table class="table table-hover mb-0">
                    <thead>
                        <tr>
                            <th style="width: 100px;">Kode</th>
                            <th>Nama Mata Kuliah</th>
                            <th style="width: 80px;">SKS</th>
                            <th style="width: 100px;">Semester</th>
                            <th style="width: 100px;">Status</th>
                            <th style="width: 150px;">Program Studi</th>
                            <th style="width: 150px;">Dosen Pengampu</th>
                            <th style="width: 130px;">Aksi</th>
                        </tr>
                    </thead>
                    <tbody id="tableBody">
                        @forelse($matakuliahs as $matakuliah)
                        <tr>
                            <td><span class="badge bg-primary">{{ $matakuliah->kode }}</span></td>
                            <td><strong>{{ $matakuliah->nama }}</strong></td>
                            <td><span class="badge bg-warning text-dark">{{ $matakuliah->sks }} SKS</span></td>
                            <td>Semester {{ $matakuliah->semester }}</td>
                            <td>
                                @if($matakuliah->is_active)
                                    <span class="badge bg-success">Aktif</span>
                                @else
                                    <span class="badge bg-secondary">Nonaktif</span>
                                @endif
                            </td>
                            <td>{{ $matakuliah->prodi->nama ?? '-' }}</td>
                            <td class="text-muted">{{ $matakuliah->dosen->nama ?? '-' }}</td>
                            <td class="text-nowrap">
                                <a href="{{ route('admin.matakuliah.edit', $matakuliah) }}" class="action-btn edit" title="Edit">
                                    <i class="bi bi-pencil"></i>
                                </a>
                                <a href="{{ route('admin.matakuliah.toggleStatus', $matakuliah) }}" class="action-btn {{ $matakuliah->is_active ? 'warning' : 'success' }}" title="{{ $matakuliah->is_active ? 'Nonaktifkan' : 'Aktifkan' }}">
                                    <i class="bi bi-{{ $matakuliah->is_active ? 'x-circle' : 'check-circle' }}"></i>
                                </a>
                                <form action="{{ route('admin.matakuliah.destroy', $matakuliah) }}" method="POST" class="d-inline">
                                    @csrf @method('DELETE')
                                    <button type="submit" class="action-btn delete" title="Hapus" onclick="return confirm('Yakin hapus data ini?')">
                                        <i class="bi bi-trash"></i>
                                    </button>
                                </form>
                            </td>
                        </tr>
                        @empty
                        <tr>
                            <td colspan="8" class="text-center py-5">
                                <div class="text-muted">
                                    <i class="bi bi-inbox fs-1 d-block mb-2"></i>
                                    <span>Tidak ada data mata kuliah</span>
                                </div>
                            </td>
                        </tr>
                        @endforelse
                    </tbody>
                </table>
            </div>
            @if($matakuliahs->hasPages())
            <div class="card-footer bg-white">
                <div class="d-flex justify-content-between align-items-center">
                    <div class="text-muted small">
                        Menampilkan {{ $matakuliahs->firstItem() ?? 0 }} - {{ $matakuliahs->lastItem() ?? 0 }} dari {{ $matakuliahs->total() }} data
                    </div>
                    <nav aria-label="Page navigation">
                        {{ $matakuliahs->withQueryString()->links('pagination::bootstrap-4') }}
                    </nav>
                </div>
            </div>
            @endif
        </div>
    </div>
</div>

<style>
    .search-input-wrapper {
        position: relative;
    }

    .search-dropdown {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        border: 1px solid var(--gray-300);
        border-radius: 0.358rem;
        box-shadow: 0 4px 16px rgba(0,0,0,0.1);
        max-height: 300px;
        overflow-y: auto;
        z-index: 1050;
        margin-top: 4px;
    }
    .search-item {
        padding: 10px 15px;
        cursor: pointer;
        border-bottom: 1px solid var(--gray-100);
        transition: background 0.15s;
        color: inherit;
    }
    .search-item:hover {
        background: rgba(105, 108, 255, 0.08);
    }
    .search-item:last-child { border-bottom: none; }
    .search-item-title { color: var(--gray-800); }
    .search-item-meta { font-size: 0.75rem; color: var(--gray-500); margin-top: 2px; }
    .search-empty { padding: 15px; text-align: center; color: var(--gray-500); }
</style>

@push('scripts')
<script>
document.addEventListener('DOMContentLoaded', function() {
    const searchInput = document.getElementById('searchInput');
    const searchDropdown = document.getElementById('searchDropdown');
    const filterForm = document.getElementById('filterForm');
    const spinner = document.querySelector('.search-spinner');
    let debounceTimer;

    searchInput.addEventListener('input', function() {
        const query = this.value.trim();
        clearTimeout(debounceTimer);
        spinner.classList.add('d-none');

        if (query.length < 2) {
            searchDropdown.classList.add('d-none');
            return;
        }

        debounceTimer = setTimeout(() => {
            spinner.classList.remove('d-none');
            fetchSearchResults(query);
        }, 300);
    });

    function fetchSearchResults(query) {
        fetch(`/api/search/matakuliah?q=${encodeURIComponent(query)}`)
            .then(response => response.json())
            .then(data => {
                if (data.length > 0) {
                    let html = '';
                    data.forEach(item => {
                        html += `
                            <a href="/admin/matakuliah/${item.id}/edit" class="search-item text-decoration-none d-block">
                                <div class="search-item-title">
                                    <span class="badge bg-primary me-2">${item.kode}</span>
                                    <strong>${item.nama}</strong>
                                </div>
                                <div class="search-item-meta">${item.sks} SKS • ${item.prodi}</div>
                            </a>
                        `;
                    });
                    searchDropdown.innerHTML = html;
                    searchDropdown.classList.remove('d-none');
                } else {
                    searchDropdown.innerHTML = '<div class="search-empty">Tidak ditemukan</div>';
                    searchDropdown.classList.remove('d-none');
                }
            })
            .catch(() => { searchDropdown.classList.add('d-none'); })
            .finally(() => { spinner.classList.add('d-none'); });
    }

    document.addEventListener('click', function(e) {
        if (!e.target.closest('.search-input-wrapper')) {
            searchDropdown.classList.add('d-none');
        }
    });

    ['prodiFilter', 'semesterFilter', 'statusFilter'].forEach(id => {
        const el = document.getElementById(id);
        if (el) {
            el.addEventListener('change', () => filterForm.submit());
        }
    });
});
</script>
@endpush
@endsection