@extends('layouts.teacher')

@section('title', 'Tugas')
@section('header_title', 'Manajemen Tugas')

@section('content')

{{-- HEADER --}}
<div class="mb-8">
    <div class="flex flex-col md:flex-row md:items-center justify-between gap-4">
        <div>
            <h1 class="text-2xl font-bold text-gray-900">Daftar Modul Tugas</h1>
            <p class="text-sm text-gray-500 mt-1">Kelola dan filter tugas berdasarkan mata pelajaran</p>
        </div> 
    </div>
</div>

{{-- FILTER SECTION --}}
<div class="bg-white rounded-xl border border-gray-200 p-5 mb-6 shadow-sm">
    <div class="flex items-center gap-3 mb-4">
        <svg class="w-5 h-5 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 4a1 1 0 011-1h16a1 1 0 011 1v2.586a1 1 0 01-.293.707l-6.414 6.414a1 1 0 00-.293.707V17l-4 4v-6.586a1 1 0 00-.293-.707L3.293 7.293A1 1 0 013 6.586V4z"/>
        </svg>
        <span class="font-medium text-gray-700">Filter Tugas</span>
    </div>
    
    <form id="filterForm" class="grid grid-cols-1 md:grid-cols-4 gap-4">
        <div>
            <label class="block text-sm font-medium text-gray-700 mb-1">Cari Modul</label>
            <div class="relative">
                <input type="text" name="search" placeholder="Ketik nama modul..."
                       class="w-full pl-10 pr-4 py-2.5 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 transition">
                <svg class="absolute left-3 top-3 w-5 h-5 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z"/>
                </svg>
            </div>
        </div>
        
        <div>
            <label class="block text-sm font-medium text-gray-700 mb-1">Jurusan</label>
            <select name="department_id" 
                    class="w-full px-4 py-2.5 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 transition">
                <option value="">Semua Jurusan</option>
                @foreach($departments as $dept)
                    <option value="{{ $dept->id }}">{{ $dept->name }}</option>
                @endforeach
            </select>
        </div>
        
        <div>
            <label class="block text-sm font-medium text-gray-700 mb-1">Kelas</label>
            <select name="tingkat_id" 
                    class="w-full px-4 py-2.5 border border-gray-300 rounded-lg focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 transition">
                <option value="">Semua Kelas</option>
                @foreach($levels as $id => $label)
                    <option value="{{ $id }}">{{ $label }}</option>
                @endforeach
            </select>
        </div>
        
        <div class="flex items-end">
            <button type="button" onclick="resetFilters()" 
                    class="w-full px-4 py-2.5 border border-gray-300 text-gray-700 rounded-lg hover:bg-gray-50 transition font-medium">
                Reset Filter
            </button>
        </div>
    </form>
</div>

{{-- STATS & LOADING --}}
<div class="flex items-center justify-between mb-6">
    <div class="flex items-center gap-4">
        <div id="resultsCount" class="text-sm text-gray-600 bg-gray-50 px-3 py-1.5 rounded-lg">
            <span class="font-medium">{{ $modules->count() }}</span> modul ditemukan
        </div>
        
        @if($modules->count() > 0)
        <div class="hidden md:flex items-center gap-2 text-sm text-gray-500">
            <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z"/>
            </svg>
            Klik kartu untuk melihat detail
        </div>
        @endif
    </div>
    
    <div id="loadingSpinner" class="hidden flex items-center gap-2 text-sm text-indigo-600">
        <div class="w-4 h-4 border-2 border-indigo-600 border-t-transparent rounded-full animate-spin"></div>
        Memuat data...
    </div>
</div>

{{-- MODULES GRID --}}
<div id="moduleGrid">
    @if($modules->count() > 0)
    <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4 gap-6">
        @foreach($modules as $module)
        <div class="group">
            <a href="{{ route('guru.tugas.module', $module->id) }}"
               class="block bg-white rounded-xl border border-gray-200 hover:border-indigo-300 hover:shadow-lg transition-all duration-300 overflow-hidden h-full">
                
                {{-- Thumbnail with overlay --}}
                <div class="relative h-40 bg-gradient-to-r from-gray-50 to-gray-100 overflow-hidden">
                    <img src="{{ $module->thumbnail }}"
                         class="w-full h-full object-cover group-hover:scale-105 transition-transform duration-300"
                         alt="{{ $module->name }}">
                    <div class="absolute top-3 left-3">
                        <span class="px-3 py-1 text-xs font-bold text-white bg-indigo-600 rounded-full">
                            {{ $module->class }}
                        </span>
                    </div>
                    <div class="absolute top-3 right-3">
                        <span class="px-3 py-1 text-xs font-bold text-gray-700 bg-white/90 backdrop-blur-sm rounded-full">
                            {{ $module->total_tasks }} Tugas
                        </span>
                    </div>
                </div>

                {{-- Content --}}
                <div class="p-5">
                    <h3 class="font-bold text-gray-900 text-lg mb-2 line-clamp-1">
                        {{ $module->name }}
                    </h3>
                    
                    <div class="flex items-center justify-between text-sm text-gray-500 mb-3">
                        <div class="flex items-center gap-1">
                            <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z"/>
                            </svg>
                            {{ $module->last_update }}
                        </div>
                    </div>
                    
                   
                </div>
            </a>
        </div>
        @endforeach
    </div>
    @else
    {{-- Empty State --}}
    <div class="text-center py-16 bg-white rounded-xl border-2 border-dashed border-gray-300">
        <div class="w-20 h-20 mx-auto mb-4 text-gray-300">
            <svg fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="1.5" d="M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z"/>
            </svg>
        </div>
        <h3 class="text-lg font-medium text-gray-900 mb-2">Anda tidak terdaftar pada modul tersebut!!!</h3>
    </div>
    @endif
</div>

{{-- PAGINATION --}}
@if($modules->count() > 0)
<div id="pagination" class="mt-8">
    {{-- {{ $modules->links() }} --}}
    <div class="flex items-center justify-between">
        <div class="text-sm text-gray-500">
            Halaman 1 dari 5
        </div>
        <div class="flex gap-2">
            <button class="px-4 py-2 border border-gray-300 rounded-lg text-gray-700 hover:bg-gray-50 transition disabled:opacity-50 disabled:cursor-not-allowed">
                Sebelumnya
            </button>
            <button class="px-4 py-2 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 transition">
                Selanjutnya
            </button>
        </div>
    </div>
</div>
@endif


<script>
const form = document.getElementById('filterForm')
const grid = document.getElementById('moduleGrid')
const pagination = document.getElementById('pagination')
const resultsCount = document.getElementById('resultsCount')
const spinner = document.getElementById('loadingSpinner')

let debounceTimer = null

// Attach events to all filter inputs
form.querySelectorAll('input, select').forEach(el => {
    el.addEventListener('change', triggerFetch)
    if (el.tagName === 'INPUT') {
        el.addEventListener('input', triggerFetch)
    }
})

function triggerFetch() {
    clearTimeout(debounceTimer)
    spinner.classList.remove('hidden')
    debounceTimer = setTimeout(fetchTugas, 400)
}

function fetchTugas(page = 1) {
    const params = new URLSearchParams(new FormData(form))
    params.set('page', page)

    fetch(`{{ route('guru.tugas.index') }}?${params.toString()}`, {
        headers: { 
            'X-Requested-With': 'XMLHttpRequest',
            'Accept': 'text/html'
        }
    })
    .then(res => {
        if (!res.ok) throw new Error('Network response was not ok')
        return res.text()
    })
    .then(html => {
        const temp = document.createElement('div')
        temp.innerHTML = html

        grid.innerHTML = temp.querySelector('#moduleGrid').innerHTML
        
        const paginationHtml = temp.querySelector('#pagination')
        pagination.innerHTML = paginationHtml ? paginationHtml.innerHTML : ''
        
        const newCount = temp.querySelector('#resultsCount')
        if (newCount) resultsCount.innerHTML = newCount.innerHTML

        bindPagination()
    })
    .catch(error => {
        console.error('Error:', error)
        grid.innerHTML = `
            <div class="text-center py-12 text-red-600">
                <svg class="w-12 h-12 mx-auto mb-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/>
                </svg>
                <p>Terjadi kesalahan saat memuat data</p>
            </div>
        `
    })
    .finally(() => {
        spinner.classList.add('hidden')
    })
}

function bindPagination() {
    pagination.querySelectorAll('a').forEach(link => {
        link.addEventListener('click', e => {
            e.preventDefault()
            const url = new URL(link.href)
            fetchTugas(url.searchParams.get('page') || 1)
        })
    })
}

function resetFilters() {
    form.reset()
    triggerFetch()
}


// Close modal on ESC
document.addEventListener('keydown', (e) => {
    if (e.key === 'Escape') closeCreateModal()
})

// Initialize
document.addEventListener('DOMContentLoaded', () => {
    // Add animation to cards on load
    document.querySelectorAll('#moduleGrid > div > div').forEach((card, index) => {
        card.style.animationDelay = `${index * 0.1}s`
        card.classList.add('animate-fadeIn')
    })
})
</script>

<style>
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fadeIn {
    animation: fadeIn 0.3s ease-out forwards;
}

.line-clamp-1 {
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
</style>

@endsection