@extends('layouts.dashboard')

@section('title', 'Student Management')

@section('page-content')
<div class="mb-6 flex items-center justify-between">
    <div>
        <h1 class="text-2xl font-bold text-gray-900">Student Management</h1>
        <p class="mt-1 text-sm text-gray-600">Manage student records and academic information</p>
    </div>
    <div class="flex items-center space-x-3">
        @can('create-students')
        <!-- Export Button -->
        <a href="{{ route('students.export', request()->all()) }}" 
           class="px-4 py-2 bg-green-600 text-white rounded-lg hover:bg-green-700 flex items-center space-x-2">
            <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 10v6m0 0l-3-3m3 3l3-3m2 8H7a2 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>
            <span>Export</span>
        </a>
        
        <!-- Import Button -->
        <button onclick="document.getElementById('importModal').classList.remove('hidden')" 
                class="px-4 py-2 bg-purple-600 text-white rounded-lg hover:bg-purple-700 flex items-center space-x-2">
            <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12"/>
            </svg>
            <span>Import</span>
        </button>
        
        <a href="{{ route('students.create') }}" class="px-4 py-2 bg-blue-600 text-white rounded-lg hover:bg-blue-700 flex items-center space-x-2">
            <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 4v16m8-8H4"/>
            </svg>
            <span>Add Student</span>
        </a>
        @endcan
    </div>
</div>

<!-- Filters -->
<div class="bg-white rounded-lg shadow-sm p-6 mb-6">
    <form method="GET" action="{{ route('students.index') }}" class="grid grid-cols-1 md:grid-cols-4 gap-4">
        <div>
            <label class="block text-sm font-medium text-gray-700 mb-2">Search</label>
            <input type="text" name="search" value="{{ request('search') }}" 
                   placeholder="ID, name, email..."
                   class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent">
        </div>
        <div>
            <label class="block text-sm font-medium text-gray-700 mb-2">Program</label>
            <select name="program_id" class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent">
                <option value="">All Programs</option>
                @foreach($programs as $program)
                    <option value="{{ $program->id }}" {{ request('program_id') == $program->id ? 'selected' : '' }}>
                        {{ $program->name }}
                    </option>
                @endforeach
            </select>
        </div>
        <div>
            <label class="block text-sm font-medium text-gray-700 mb-2">Level</label>
            <select name="level" class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent">
                <option value="">All Levels</option>
                <option value="100" {{ request('level') == '100' ? 'selected' : '' }}>Level 100</option>
                <option value="200" {{ request('level') == '200' ? 'selected' : '' }}>Level 200</option>
                <option value="300" {{ request('level') == '300' ? 'selected' : '' }}>Level 300</option>
                <option value="400" {{ request('level') == '400' ? 'selected' : '' }}>Level 400</option>
            </select>
        </div>
        <div class="flex items-end space-x-2">
            <button type="submit" class="px-4 py-2 bg-gray-900 text-white rounded-lg hover:bg-gray-800">
                Filter
            </button>
            <a href="{{ route('students.index') }}" class="px-4 py-2 border border-gray-300 text-gray-700 rounded-lg hover:bg-gray-50">
                Reset
            </a>
        </div>
    </form>
</div>

<!-- Students Grid -->
<div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
    @forelse($students as $student)
    <div class="bg-white rounded-lg shadow-sm overflow-hidden hover:shadow-md transition">
        <div class="h-2 bg-gradient-to-r from-blue-500 to-purple-600"></div>
        <div class="p-6">
            <div class="flex items-start justify-between mb-4">
                <div class="flex items-center space-x-3">
                    <div class="w-12 h-12 rounded-full bg-gradient-to-br from-blue-500 to-purple-600 flex items-center justify-center text-white font-semibold">
                        {{ strtoupper(substr($student->user->name ?? 'ST', 0, 2)) }}
                    </div>
                    <div>
                        <h3 class="font-semibold text-gray-900">{{ $student->user->name ?? 'N/A' }}</h3>
                        <p class="text-sm text-gray-500">{{ $student->student_id }}</p>
                    </div>
                </div>
                @if($student->status === 'active')
                    <span class="px-2 py-1 text-xs font-semibold rounded-full bg-green-100 text-green-800">Active</span>
                @elseif($student->status === 'graduated')
                    <span class="px-2 py-1 text-xs font-semibold rounded-full bg-blue-100 text-blue-800">Graduated</span>
                @else
                    <span class="px-2 py-1 text-xs font-semibold rounded-full bg-gray-100 text-gray-800">{{ ucfirst($student->status) }}</span>
                @endif
            </div>

            <div class="space-y-2 mb-4">
                <div class="flex items-center text-sm text-gray-600">
                    <svg class="w-4 h-4 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 21V5a2 2 0 00-2-2H7a2 2 0 00-2 2v16m14 0h2m-2 0h-5m-9 0H3m2 0h5M9 7h1m-1 4h1m4-4h1m-1 4h1m-5 10v-5a1 1 0 011-1h2a1 1 0 011 1v5m-4 0h4"/>
                    </svg>
                    {{ $student->program->name ?? 'N/A' }}
                </div>
                <div class="flex items-center text-sm text-gray-600">
                    <svg class="w-4 h-4 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 01-2 2h-2a2 2 0 01-2-2z"/>
                    </svg>
                    Level {{ $student->current_level }}
                </div>
                @if($student->cgpa)
                <div class="flex items-center text-sm text-gray-600">
                    <svg class="w-4 h-4 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M11.049 2.927c.3-.921 1.603-.921 1.902 0l1.519 4.674a1 1 0 00.95.69h4.915c.969 0 1.371 1.24.588 1.81l-3.976 2.888a1 1 0 00-.363 1.118l1.518 4.674c.3.922-.755 1.688-1.538 1.118l-3.976-2.888a1 1 0 00-1.176 0l-3.976 2.888c-.783.57-1.838-.197-1.538-1.118l1.518-4.674a1 1 0 00-.363-1.118l-3.976-2.888c-.784-.57-.38-1.81.588-1.81h4.914a1 1 0 00.951-.69l1.519-4.674z"/>
                    </svg>
                    CGPA: {{ number_format($student->cgpa, 2) }}
                </div>
                @endif
            </div>

            <div class="flex items-center justify-end space-x-2 pt-4 border-t border-gray-200">
                <a href="{{ route('students.show', $student) }}" class="px-3 py-1 text-sm text-blue-600 hover:bg-blue-50 rounded-lg">
                    View
                </a>
                @can('update-students')
                <a href="{{ route('students.edit', $student) }}" class="px-3 py-1 text-sm text-indigo-600 hover:bg-indigo-50 rounded-lg">
                    Edit
                </a>
                @endcan
            </div>
        </div>
    </div>
    @empty
    <div class="col-span-full bg-white rounded-lg shadow-sm p-12 text-center">
        <svg class="mx-auto h-16 w-16 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path d="M12 14l9-5-9-5-9 5 9 5z"/>
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 14l6.16-3.422a12.083 12.083 0 01.665 6.479A11.952 11.952 0 0012 20.055a11.952 11.952 0 00-6.824-2.998 12.078 12.078 0 01.665-6.479L12 14zm-4 6v-7.5l4-2.222"/>
        </svg>
        <p class="mt-4 text-lg text-gray-500">No students found</p>
    </div>
    @endforelse
</div>

@if($students->hasPages())
<div class="mt-6">
    {{ $students->links() }}
</div>
@endif

<!-- Import Modal -->
<div id="importModal" class="hidden fixed inset-0 bg-gray-600 bg-opacity-50 overflow-y-auto h-full w-full z-50">
    <div class="relative top-20 mx-auto p-5 border w-96 shadow-lg rounded-lg bg-white">
        <div class="flex items-center justify-between mb-4">
            <h3 class="text-lg font-semibold text-gray-900">Import Students</h3>
            <button onclick="document.getElementById('importModal').classList.add('hidden')" 
                    class="text-gray-400 hover:text-gray-600">
                <svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"/>
                </svg>
            </button>
        </div>
        
        <form method="POST" action="{{ route('students.import') }}" enctype="multipart/form-data">
            @csrf
            
            <div class="mb-4">
                <label class="block text-sm font-medium text-gray-700 mb-2">
                    Upload Excel File
                </label>
                <input type="file" name="file" accept=".xlsx,.xls,.csv" required
                       class="w-full px-3 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-transparent">
                <p class="mt-1 text-xs text-gray-500">Supported: .xlsx, .xls, .csv (Max: 5MB)</p>
            </div>
            
            <div class="mb-4 p-3 bg-blue-50 rounded-lg">
                <p class="text-sm text-blue-800">
                    <a href="{{ route('students.template') }}" class="font-semibold underline hover:text-blue-600">
                        Download template
                    </a> to see the required format
                </p>
            </div>
            
            @if($errors->any())
            <div class="mb-4 p-3 bg-red-50 rounded-lg">
                <p class="text-sm text-red-800 font-semibold">Import Errors:</p>
                <ul class="mt-1 text-xs text-red-700 list-disc list-inside">
                    @foreach($errors->all() as $error)
                    <li>{{ $error }}</li>
                    @endforeach
                </ul>
            </div>
            @endif
            
            <div class="flex items-center justify-end space-x-3">
                <button type="button" 
                        onclick="document.getElementById('importModal').classList.add('hidden')"
                        class="px-4 py-2 border border-gray-300 text-gray-700 rounded-lg hover:bg-gray-50">
                    Cancel
                </button>
                <button type="submit" 
                        class="px-4 py-2 bg-blue-600 text-white rounded-lg hover:bg-blue-700">
                    Import
                </button>
            </div>
        </form>
    </div>
</div>

@if(session('import_errors'))
<script>
    document.addEventListener('DOMContentLoaded', function() {
        document.getElementById('importModal').classList.remove('hidden');
    });
</script>
@endif
@endsection