@extends('layouts.teacher.app')

@section('content')
<!-- Flatpickr CSS -->
<link rel="stylesheet" href="{{ asset('css/flatpickr.min.css') }}">

<style>
    .upload-card {
        border: none;
        border-radius: 12px;
        box-shadow: 0 2px 12px rgba(0,0,0,0.08);
        transition: transform 0.2s;
    }
    
    .upload-card:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 20px rgba(0,0,0,0.12);
    }
    
    .form-label-custom {
        font-weight: 600;
        color: #495057;
        margin-bottom: 0.5rem;
        font-size: 0.9rem;
    }
    
    .time-select {
        padding: 0.5rem;
        border: 1px solid #ced4da;
        border-radius: 6px;
        font-size: 0.95rem;
    }
    
    .time-select:focus {
        border-color: #0d6efd;
        outline: 0;
        box-shadow: 0 0 0 0.2rem rgba(13,110,253,.25);
    }
</style>

<div class="pagetitle">
    <h1>Muatnaik Senarai Keluar Asrama</h1>
    <nav>
        <ol class="breadcrumb">
            <li class="breadcrumb-item"><a href="{{ route('teacher.dashboard') }}">Utama</a></li>
            <li class="breadcrumb-item active">Muatnaik Senarai</li>
        </ol>
    </nav>
</div>

<section class="section">
    <div class="row justify-content-center">
        <div class="col-lg-8">
            <div class="card upload-card">
                <div class="card-body p-4">
                    <h5 class="card-title mb-4">
                        <i class="bi bi-upload me-2"></i>Muatnaik Senarai Pelajar
                    </h5>

                    @if(session('success'))
                        <div class="alert alert-success alert-dismissible fade show" role="alert">
                            <i class="bi bi-check-circle me-2"></i>{{ session('success') }}
                            <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
                        </div>
                    @endif
                    @if(session('error'))
                        <div class="alert alert-danger alert-dismissible fade show" role="alert">
                            <i class="bi bi-exclamation-triangle me-2"></i>{{ session('error') }}
                            <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
                        </div>
                    @endif
                    @if($errors->any())
                        <div class="alert alert-danger alert-dismissible fade show" role="alert">
                            <ul class="mb-0">
                                @foreach($errors->all() as $error)
                                    <li>{{ $error }}</li>
                                @endforeach
                            </ul>
                            <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
                        </div>
                    @endif

                    <form action="{{ route('outing.uploadliststudent') }}" method="POST" enctype="multipart/form-data" id="uploadForm">
                        @csrf
                        
                        <!-- Kebenaran -->
                        <div class="mb-4">
                            <label class="form-label-custom">Kebenaran <span class="text-danger">*</span></label>
                            <select name="kebenaran_id" id="kebenaran_id" class="form-select" required>
                                <option value="">Pilih Kebenaran</option>
                                @foreach($kebenaran as $item)
                                    <option value="{{ $item->code_kebenaran }}">{{ $item->desc ?? $item->description ?? 'Item ' . $item->code_kebenaran }}</option>
                                @endforeach
                            </select>
                        </div>

                        <!-- Sub Kebenaran -->
                        @if(isset($subkebenaran) && count($subkebenaran) > 0)
                        <div class="mb-4">
                            <label class="form-label-custom">Sub Kebenaran (Pilihan)</label>
                            <select name="subkebenaran_id" id="subkebenaran_id" class="form-select">
                                <option value="">Pilih Sub Kebenaran</option>
                                @foreach($subkebenaran as $item)
                                    <option value="{{ $item->code_sub }}" data-kebenaran="{{ $item->code_kebenaran }}">{{ $item->desc ?? $item->description ?? 'Item ' . $item->code_sub }}</option>
                                @endforeach
                            </select>
                        </div>
                        @endif

                        <!-- Date Out -->
                        <div class="mb-4">
                            <label class="form-label-custom">Tarikh & Masa Keluar <span class="text-danger">*</span></label>
                            <input type="text" class="form-control" id="datetime_out" placeholder="Pilih tarikh & masa keluar" required readonly>
                            <input type="hidden" name="date_out" id="date_out">
                        </div>

                        <!-- Date In -->
                        <div class="mb-4">
                            <label class="form-label-custom">Tarikh & Masa Masuk <span class="text-danger">*</span></label>
                            <input type="text" class="form-control" id="datetime_in" placeholder="Pilih tarikh & masa masuk" required readonly>
                            <input type="hidden" name="date_in" id="date_in">
                        </div>

                        <!-- File Upload -->
                        <div class="mb-4">
                            <label class="form-label-custom">Fail Excel (.xlsx, .xls) <span class="text-danger">*</span></label>
                            <input type="file" name="file" id="file" class="form-control" accept=".xlsx, .xls" required>
                            <small class="form-text text-muted">Fail mesti mengandungi lajur 'student_id'.</small>
                        </div>

                        <div class="d-grid">
                            <button type="submit" class="btn btn-primary btn-lg">
                                <i class="bi bi-upload me-2"></i>Muatnaik Senarai
                            </button>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div>
</section>

<!-- Flatpickr JS -->
<script src="{{ asset('js/flatpickr.min.js') }}"></script>

<script>
document.addEventListener('DOMContentLoaded', function() {
    // Initialize Flatpickr for Date Out
    const dateOutPicker = flatpickr("#datetime_out", {
        enableTime: true,
        dateFormat: "d-m-Y h:i K",
        time_24hr: false,
        minuteIncrement: 15,
        onChange: function(selectedDates, dateStr, instance) {
            if (selectedDates.length > 0) {
                // Format to Y-m-d H:i:s for backend
                const date = selectedDates[0];
                const year = date.getFullYear();
                const month = String(date.getMonth() + 1).padStart(2, '0');
                const day = String(date.getDate()).padStart(2, '0');
                const hours = String(date.getHours()).padStart(2, '0');
                const minutes = String(date.getMinutes()).padStart(2, '0');
                
                document.getElementById('date_out').value = `${year}-${month}-${day} ${hours}:${minutes}:00`;
                
                // Update Date In picker's minDate to be after Date Out
                dateInPicker.set('minDate', date);
            }
        }
    });

    // Initialize Flatpickr for Date In
    const dateInPicker = flatpickr("#datetime_in", {
        enableTime: true,
        dateFormat: "d-m-Y h:i K",
        time_24hr: false,
        minuteIncrement: 15,
        onChange: function(selectedDates, dateStr, instance) {
            if (selectedDates.length > 0) {
                // Format to Y-m-d H:i:s for backend
                const date = selectedDates[0];
                const year = date.getFullYear();
                const month = String(date.getMonth() + 1).padStart(2, '0');
                const day = String(date.getDate()).padStart(2, '0');
                const hours = String(date.getHours()).padStart(2, '0');
                const minutes = String(date.getMinutes()).padStart(2, '0');
                
                document.getElementById('date_in').value = `${year}-${month}-${day} ${hours}:${minutes}:00`;
            }
        }
    });

    // --- Kebenaran / Sub Kebenaran Filter Logic ---
    const kebenaranSelect = document.getElementById('kebenaran_id');
    const subKebenaranSelect = document.getElementById('subkebenaran_id');

    if (subKebenaranSelect) {
        const allSubOptions = Array.from(subKebenaranSelect.querySelectorAll('option')).slice(1); 
        
        function filterSubKebenaran() {
            const selectedKebenaran = kebenaranSelect.value;
            subKebenaranSelect.innerHTML = '<option value="">Pilih Sub Kebenaran</option>';
            
            if (!selectedKebenaran) {
                return;
            }

            allSubOptions.forEach(option => {
                if (option.dataset.kebenaran == selectedKebenaran) {
                    subKebenaranSelect.appendChild(option.cloneNode(true));
                }
            });
        }

        filterSubKebenaran();
        kebenaranSelect.addEventListener('change', filterSubKebenaran);
    }
});
</script>
@endsection