@extends('simaju.layouts.main')
@section('title', 'Input Absensi')

@push('css')
<style>
    .attendance-container {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        position: relative;
        overflow: hidden;
        min-height: 100vh;
    }
    
    .attendance-container::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -50%;
        width: 200%;
        height: 200%;
        background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
        animation: pulse 15s ease-in-out infinite;
    }
    
    @keyframes pulse {
        0%, 100% { transform: scale(1) rotate(0deg); }
        50% { transform: scale(1.1) rotate(180deg); }
    }
    
    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(30px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    @keyframes slideIn {
        from {
            opacity: 0;
            transform: translateX(-20px);
        }
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }
    
    .animate-fade-in-up {
        animation: fadeInUp 0.6s ease-out;
    }
    
    .animate-slide-in {
        animation: slideIn 0.4s ease-out;
    }
    
    .student-row {
        transition: all 0.3s ease;
    }
    
    .student-row:hover {
        transform: translateX(8px);
        background: linear-gradient(90deg, #f0f9ff 0%, #e0f2fe 100%);
    }
    
    .radio-custom {
        appearance: none;
        width: 24px;
        height: 24px;
        border: 3px solid #d1d5db;
        border-radius: 50%;
        cursor: pointer;
        transition: all 0.3s ease;
        position: relative;
    }
    
    .radio-custom:checked {
        border-color: currentColor;
        transform: scale(1.1);
    }
    
    .radio-custom:checked::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 12px;
        height: 12px;
        border-radius: 50%;
        background: currentColor;
    }
    
    .radio-hadir { color: #10b981; }
    .radio-sakit { color: #f59e0b; }
    .radio-izin { color: #3b82f6; }
    .radio-alfa { color: #ef4444; }
    
    .loading-spinner {
        border: 3px solid #f3f4f6;
        border-top: 3px solid #3b82f6;
        border-radius: 50%;
        width: 40px;
        height: 40px;
        animation: spin 1s linear infinite;
    }
    
    @keyframes spin {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }
    
    .stat-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 8px 16px;
        border-radius: 999px;
        font-weight: 600;
        font-size: 14px;
        transition: all 0.3s ease;
    }
    
    .stat-badge:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    }
</style>
@endpush

@section('content')
<div class="attendance-container py-12 px-4">
    <div class="max-w-6xl mx-auto">
        <!-- Header -->
        <div class="text-center mb-8 animate-fade-in-up">
            <div class="inline-flex items-center justify-center w-20 h-20 bg-white rounded-full shadow-xl mb-4">
                <i class="fas fa-clipboard-check text-4xl text-purple-600"></i>
            </div>
            <h1 class="text-4xl font-bold text-black mb-2">Input Absensi Siswa</h1>
            <p class="text-black-100 text-lg">Catat kehadiran siswa hari ini</p>
        </div>

        <!-- Main Form Card -->
        <div class="bg-white bg-opacity-95 backdrop-blur-lg rounded-2xl shadow-2xl p-8 animate-fade-in-up" style="animation-delay: 0.2s;">
            <form action="{{ route('simaju.absensi.store') }}" method="POST" id="absensiForm">
                @csrf
                <input type="hidden" name="kelas_id" id="kelasIdInput" value="">
                
                <!-- Filter Section -->
                <div class="grid grid-cols-1 md:grid-cols-2 gap-6 mb-8">
                    <!-- Kelas -->
                    <div>
                        <label class="block text-sm font-bold text-gray-700 mb-2 flex items-center gap-2">
                            <i class="fas fa-school text-blue-600"></i>
                            Pilih Kelas <span class="text-red-500">*</span>
                        </label>
                        <select id="kelasSelect" required 
                                class="w-full px-4 py-3 border-2 border-gray-200 rounded-xl focus:ring-2 focus:ring-blue-500 focus:border-blue-500 transition-all">
                            <option value="">-- Pilih Kelas --</option>
                            @foreach($kelasList as $k)
                            <option value="{{ $k->id }}">{{ $k->nama_kelas }} {{ $k->jurusan ? '- ' . $k->jurusan->nama_jurusan : '' }}</option>
                            @endforeach
                        </select>
                    </div>

                    <!-- Tanggal -->
                    <div>
                        <label class="block text-sm font-bold text-gray-700 mb-2 flex items-center gap-2">
                            <i class="fas fa-calendar-alt text-green-600"></i>
                            Tanggal <span class="text-red-500">*</span>
                        </label>
                        <input type="date" name="tanggal" value="{{ $tanggal }}" required 
                               class="w-full px-4 py-3 border-2 border-gray-200 rounded-xl focus:ring-2 focus:ring-green-500 focus:border-green-500 transition-all">
                    </div>
                </div>

                <!-- Loading State -->
                <div id="loadingState" class="hidden text-center py-12">
                    <div class="loading-spinner mx-auto mb-4"></div>
                    <p class="text-gray-600 font-medium">Memuat data siswa...</p>
                </div>

                <!-- Empty State -->
                <div id="emptyState" class="text-center py-16">
                    <div class="inline-flex items-center justify-center w-24 h-24 bg-gray-100 rounded-full mb-6">
                        <i class="fas fa-users text-5xl text-gray-400"></i>
                    </div>
                    <h3 class="text-xl font-bold text-gray-700 mb-2">Belum Ada Data Siswa</h3>
                    <p class="text-gray-500">Pilih kelas terlebih dahulu untuk menampilkan daftar siswa</p>
                </div>

                <!-- Students Table -->
                <div id="studentsContainer" class="hidden">
                    <!-- Statistics Summary -->
                    <div class="bg-gradient-to-r from-blue-50 to-purple-50 rounded-xl p-6 mb-6">
                        <div class="flex flex-wrap items-center justify-between gap-4">
                            <div>
                                <h3 class="text-lg font-bold text-gray-800 mb-1">Total Siswa</h3>
                                <p class="text-3xl font-bold text-blue-600" id="totalSiswa">0</p>
                            </div>
                            <div class="flex flex-wrap gap-2">
                                <span class="stat-badge bg-green-100 text-green-700">
                                    <i class="fas fa-check-circle"></i>
                                    <span>Hadir</span>
                                </span>
                                <span class="stat-badge bg-yellow-100 text-yellow-700">
                                    <i class="fas fa-medkit"></i>
                                    <span>Sakit</span>
                                </span>
                                <span class="stat-badge bg-blue-100 text-blue-700">
                                    <i class="fas fa-file-alt"></i>
                                    <span>Izin</span>
                                </span>
                                <span class="stat-badge bg-red-100 text-red-700">
                                    <i class="fas fa-times-circle"></i>
                                    <span>Alpha</span>
                                </span>
                            </div>
                        </div>
                    </div>

                    <!-- Table -->
                    <div class="overflow-x-auto rounded-xl border-2 border-gray-200">
                        <table class="w-full">
                            <thead>
                                <tr class="bg-gradient-to-r from-gray-50 to-gray-100">
                                    <th class="px-6 py-4 text-left text-xs font-bold text-gray-700 uppercase tracking-wider">
                                        No
                                    </th>
                                    <th class="px-6 py-4 text-left text-xs font-bold text-gray-700 uppercase tracking-wider">
                                        <i class="fas fa-user mr-2 text-blue-500"></i>Nama Siswa
                                    </th>
                                    <th class="px-6 py-4 text-center text-xs font-bold text-green-700 uppercase tracking-wider">
                                        <i class="fas fa-check-circle mr-2"></i>Hadir
                                    </th>
                                    <th class="px-6 py-4 text-center text-xs font-bold text-yellow-700 uppercase tracking-wider">
                                        <i class="fas fa-medkit mr-2"></i>Sakit
                                    </th>
                                    <th class="px-6 py-4 text-center text-xs font-bold text-blue-700 uppercase tracking-wider">
                                        <i class="fas fa-file-alt mr-2"></i>Izin
                                    </th>
                                    <th class="px-6 py-4 text-center text-xs font-bold text-red-700 uppercase tracking-wider">
                                        <i class="fas fa-times-circle mr-2"></i>Alpha
                                    </th>
                                </tr>
                            </thead>
                            <tbody id="studentsTableBody" class="bg-white divide-y divide-gray-200">
                                <!-- Students will be loaded here via AJAX -->
                            </tbody>
                        </table>
                    </div>

                    <!-- Action Buttons -->
                    <div class="mt-8 flex flex-col sm:flex-row items-center justify-between gap-4 pt-6 border-t-2 border-gray-200">
                        <a href="{{ route('simaju.absensi.index') }}" 
                           class="w-full sm:w-auto inline-flex items-center justify-center px-8 py-3 border-2 border-gray-300 rounded-xl text-gray-700 font-semibold hover:bg-gray-50 transition-all duration-200 shadow-md hover:shadow-lg">
                            <i class="fas fa-arrow-left mr-2"></i>
                            Kembali
                        </a>
                        <button type="submit" 
                                class="w-full sm:w-auto inline-flex items-center justify-center px-8 py-3 bg-gradient-to-r from-blue-600 to-purple-600 text-white font-semibold rounded-xl hover:from-blue-700 hover:to-purple-700 shadow-lg hover:shadow-xl transform hover:-translate-y-1 transition-all duration-200">
                            <i class="fas fa-save mr-2"></i>
                            Simpan Absensi
                        </button>
                    </div>
                </div>
            </form>
        </div>
    </div>
</div>
@endsection

@push('scripts')
<script>
document.addEventListener('DOMContentLoaded', function() {
    const kelasSelect = document.getElementById('kelasSelect');
    const kelasIdInput = document.getElementById('kelasIdInput');
    const loadingState = document.getElementById('loadingState');
    const emptyState = document.getElementById('emptyState');
    const studentsContainer = document.getElementById('studentsContainer');
    const studentsTableBody = document.getElementById('studentsTableBody');
    const totalSiswaEl = document.getElementById('totalSiswa');
    const absensiForm = document.getElementById('absensiForm');

    kelasSelect.addEventListener('change', function() {
        const kelasId = this.value;
        
        if (!kelasId) {
            studentsContainer.classList.add('hidden');
            emptyState.classList.remove('hidden');
            loadingState.classList.add('hidden');
            return;
        }

        // Update hidden input
        kelasIdInput.value = kelasId;

        // Show loading
        emptyState.classList.add('hidden');
        studentsContainer.classList.add('hidden');
        loadingState.classList.remove('hidden');

        // Fetch students
        fetch(`{{ route('simaju.absensi.create') }}?kelas_id=${kelasId}`, {
            method: 'GET',
            headers: {
                'X-Requested-With': 'XMLHttpRequest',
                'Accept': 'application/json'
            }
        })
        .then(response => response.json())
        .then(data => {
            studentsTableBody.innerHTML = '';
            
            if (data.siswas && data.siswas.length > 0) {
                totalSiswaEl.textContent = data.siswas.length;
                
                data.siswas.forEach((siswa, index) => {
                    const row = document.createElement('tr');
                    row.className = 'student-row hover:bg-blue-50';
                    row.style.animationDelay = `${index * 0.05}s`;
                    row.classList.add('animate-slide-in');
                    
                    row.innerHTML = `
                        <td class="px-6 py-4 text-sm font-medium text-gray-900">
                            ${index + 1}
                        </td>
                        <td class="px-6 py-4">
                            <div class="flex items-center gap-3">
                                <div class="flex-shrink-0 h-10 w-10 bg-gradient-to-br from-blue-400 to-blue-600 rounded-full flex items-center justify-center text-white font-bold shadow-md">
                                    ${siswa.nama.charAt(0)}
                                </div>
                                <div>
                                    <div class="font-semibold text-gray-900">${siswa.nama}</div>
                                    <div class="text-xs text-gray-500 flex items-center">
                                        <i class="fas fa-id-card mr-1"></i>${siswa.nis}
                                    </div>
                                </div>
                            </div>
                        </td>
                        <td class="px-6 py-4 text-center">
                            <input type="radio" name="absensi[${siswa.id}]" value="hadir" checked 
                                   class="radio-custom radio-hadir">
                        </td>
                        <td class="px-6 py-4 text-center">
                            <input type="radio" name="absensi[${siswa.id}]" value="sakit" 
                                   class="radio-custom radio-sakit">
                        </td>
                        <td class="px-6 py-4 text-center">
                            <input type="radio" name="absensi[${siswa.id}]" value="izin" 
                                   class="radio-custom radio-izin">
                        </td>
                        <td class="px-6 py-4 text-center">
                            <input type="radio" name="absensi[${siswa.id}]" value="alfa" 
                                   class="radio-custom radio-alfa">
                        </td>
                    `;
                    
                    studentsTableBody.appendChild(row);
                });
                
                loadingState.classList.add('hidden');
                studentsContainer.classList.remove('hidden');
            } else {
                loadingState.classList.add('hidden');
                emptyState.classList.remove('hidden');
                emptyState.querySelector('p').textContent = 'Tidak ada siswa aktif di kelas ini';
            }
        })
        .catch(error => {
            console.error('Error:', error);
            loadingState.classList.add('hidden');
            emptyState.classList.remove('hidden');
            emptyState.querySelector('p').textContent = 'Gagal memuat data siswa';
        });
    });

    // Form submission with loading state
    absensiForm.addEventListener('submit', function(e) {
        const submitBtn = this.querySelector('button[type="submit"]');
        submitBtn.disabled = true;
        submitBtn.innerHTML = '<i class="fas fa-spinner fa-spin mr-2"></i>Menyimpan...';
    });
});
</script>
@endpush