@extends('layouts.app')
@section('title', 'Permissions Matrix')
@section('page-title', 'Permissions Matrix')

@section('content')
<div class="space-y-6">

    <div class="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-4">
        <p class="text-sm text-gray-500">Control what each role can do across the system. Changes apply immediately.</p>
        <button type="button" onclick="document.getElementById('addPermModal').classList.remove('hidden')"
                class="inline-flex items-center gap-2 bg-gray-100 text-gray-700 px-4 py-2 rounded-lg text-sm font-medium hover:bg-gray-200 transition">
            <i class="fas fa-plus"></i> Add Permission
        </button>
    </div>

    {{-- Success/Error --}}
    @if(session('success'))
    <div class="bg-green-50 border border-green-200 text-green-700 px-4 py-3 rounded-xl text-sm">
        <i class="fas fa-check-circle mr-1"></i> {{ session('success') }}
    </div>
    @endif
    @if(session('error'))
    <div class="bg-red-50 border border-red-200 text-red-700 px-4 py-3 rounded-xl text-sm">
        <i class="fas fa-exclamation-circle mr-1"></i> {{ session('error') }}
    </div>
    @endif

    {{-- Permission Matrix --}}
    <form method="POST" action="{{ route('admin.permissions.update') }}" id="permForm">
        @csrf @method('PUT')

        <div class="bg-white rounded-xl shadow-sm ring-1 ring-gray-200/60 overflow-hidden">
            <div class="overflow-x-auto">
                <table class="w-full">
                    <thead>
                        <tr class="bg-gray-50 border-b border-gray-200">
                            <th class="px-5 py-4 text-left text-xs font-semibold text-gray-600 uppercase sticky left-0 bg-gray-50 z-10 min-w-[220px]">
                                Permission
                            </th>
                            @foreach($roles as $role)
                            <th class="px-5 py-4 text-center text-xs font-semibold uppercase min-w-[120px]">
                                @php
                                    $roleColors = [
                                        'admin'   => 'text-red-700 bg-red-50',
                                        'teacher' => 'text-blue-700 bg-blue-50',
                                        'student' => 'text-green-700 bg-green-50',
                                        'parent'  => 'text-purple-700 bg-purple-50',
                                    ];
                                    $color = $roleColors[$role->name] ?? 'text-gray-700 bg-gray-50';
                                @endphp
                                <span class="inline-flex items-center px-3 py-1 rounded-full text-xs font-semibold {{ $color }}">
                                    {{ ucfirst($role->name) }}
                                </span>
                                <div class="mt-1.5">
                                    <button type="button" onclick="toggleColumn('{{ $role->name }}', true)" class="text-[10px] text-primary-600 hover:text-primary-800 mr-1">All</button>
                                    <span class="text-gray-300">|</span>
                                    <button type="button" onclick="toggleColumn('{{ $role->name }}', false)" class="text-[10px] text-primary-600 hover:text-primary-800 ml-1">None</button>
                                </div>
                            </th>
                            @endforeach
                        </tr>
                    </thead>
                    <tbody>
                        @foreach($modules as $module => $perms)
                        {{-- Module Header --}}
                        <tr class="bg-stone-50/70">
                            <td colspan="{{ $roles->count() + 1 }}" class="px-5 py-2.5 sticky left-0 bg-stone-50/70 z-10">
                                <span class="text-xs font-bold text-stone-600 uppercase tracking-wider">
                                    @php
                                        $moduleIcons = [
                                            'Users' => 'fa-users',
                                            'Exams' => 'fa-graduation-cap',
                                            'Marks' => 'fa-chart-line',
                                            'Reports' => 'fa-file-pdf',
                                            'Assignments' => 'fa-tasks',
                                            'Attendance' => 'fa-clipboard-check',
                                            'Leave' => 'fa-calendar-minus',
                                            'Communication' => 'fa-comments',
                                            'Fees' => 'fa-money-bill-wave',
                                            'Timetable' => 'fa-calendar-alt',
                                            'Audit' => 'fa-clipboard-list',
                                            'Settings' => 'fa-cog',
                                            'AI Insights' => 'fa-brain',
                                        ];
                                    @endphp
                                    <i class="fas {{ $moduleIcons[$module] ?? 'fa-circle' }} mr-1.5 text-stone-400"></i>
                                    {{ $module }}
                                </span>
                            </td>
                        </tr>
                        @foreach($perms as $perm)
                        <tr class="border-b border-gray-50 hover:bg-gray-50/50 transition">
                            <td class="px-5 py-3 sticky left-0 bg-white z-10">
                                <div>
                                    <span class="text-sm font-medium text-gray-800">{{ $perm->name }}</span>
                                    <p class="text-xs text-gray-400">
                                        @php
                                            $descriptions = [
                                                'manage-users' => 'Create, edit, deactivate user accounts',
                                                'view-users' => 'View user profiles and lists',
                                                'manage-exams' => 'Create and edit exams',
                                                'enter-marks' => 'Enter and update student marks',
                                                'view-marks' => 'View marks and results',
                                                'generate-report-cards' => 'Generate PDF report cards',
                                                'manage-assignments' => 'Create and manage assignments',
                                                'submit-assignments' => 'Submit assignment responses',
                                                'grade-assignments' => 'Grade submitted assignments',
                                                'manage-attendance' => 'Mark and edit attendance',
                                                'view-attendance' => 'View attendance records',
                                                'request-leave' => 'Submit leave requests',
                                                'approve-leave' => 'Approve or reject leave',
                                                'manage-announcements' => 'Create and edit announcements',
                                                'send-messages' => 'Send and receive messages',
                                                'moderate-chat' => 'Moderate chat conversations',
                                                'manage-fees' => 'Create invoices, manage fee structure',
                                                'view-fees' => 'View fee records and invoices',
                                                'make-payments' => 'Process fee payments',
                                                'manage-timetable' => 'Create and edit timetable',
                                                'view-timetable' => 'View class timetable',
                                                'view-audit-logs' => 'View system audit trails',
                                                'manage-settings' => 'Manage school settings',
                                                'view-ai-insights' => 'View AI-generated insights',
                                            ];
                                        @endphp
                                        {{ $descriptions[$perm->name] ?? '' }}
                                    </p>
                                </div>
                            </td>
                            @foreach($roles as $role)
                            <td class="px-5 py-3 text-center">
                                <label class="inline-flex items-center justify-center cursor-pointer">
                                    <input type="checkbox"
                                           name="permissions[{{ $role->name }}][]"
                                           value="{{ $perm->name }}"
                                           data-role="{{ $role->name }}"
                                           {{ $role->hasPermissionTo($perm->name) ? 'checked' : '' }}
                                           @if($role->name === 'admin' && in_array($perm->name, ['manage-settings', 'manage-users']))
                                               disabled checked
                                           @endif
                                           class="w-4.5 h-4.5 rounded border-gray-300 text-primary-600 focus:ring-primary-500 transition cursor-pointer">
                                    @if($role->name === 'admin' && in_array($perm->name, ['manage-settings', 'manage-users']))
                                        <input type="hidden" name="permissions[{{ $role->name }}][]" value="{{ $perm->name }}">
                                    @endif
                                </label>
                            </td>
                            @endforeach
                        </tr>
                        @endforeach
                        @endforeach
                    </tbody>
                </table>
            </div>

            {{-- Save Button --}}
            <div class="px-6 py-4 bg-gray-50 border-t border-gray-200 flex items-center justify-between">
                <p class="text-xs text-gray-400">
                    <i class="fas fa-lock mr-1"></i> Admin always retains <code class="bg-gray-200 px-1 rounded">manage-settings</code> and <code class="bg-gray-200 px-1 rounded">manage-users</code>.
                </p>
                <button type="submit" class="px-6 py-2.5 bg-primary-700 text-white font-semibold rounded-lg hover:bg-primary-800 transition shadow-sm">
                    <i class="fas fa-save mr-1.5"></i> Save Permissions
                </button>
            </div>
        </div>
    </form>

    {{-- Role Summary Cards --}}
    <div class="grid grid-cols-1 md:grid-cols-4 gap-4">
        @foreach($roles as $role)
        @php $color = $roleColors[$role->name] ?? 'text-gray-700 bg-gray-50'; @endphp
        <div class="bg-white rounded-xl shadow-sm ring-1 ring-gray-200/60 p-4">
            <div class="flex items-center justify-between mb-2">
                <span class="inline-flex items-center px-2.5 py-0.5 rounded-full text-xs font-semibold {{ $color }}">{{ ucfirst($role->name) }}</span>
                <span class="text-lg font-bold text-gray-800">{{ $role->permissions->count() }}</span>
            </div>
            <p class="text-xs text-gray-400">permissions assigned</p>
            <div class="mt-2 h-1.5 bg-gray-100 rounded-full overflow-hidden">
                <div class="h-full rounded-full {{ str_replace('text-', 'bg-', explode(' ', $color)[0]) }}"
                     style="width: {{ ($role->permissions->count() / max($permissions->count(), 1)) * 100 }}%"></div>
            </div>
        </div>
        @endforeach
    </div>
</div>

{{-- Add Permission Modal --}}
<div id="addPermModal" class="hidden fixed inset-0 bg-black/50 z-50 flex items-center justify-center p-4">
    <div class="bg-white rounded-xl shadow-2xl w-full max-w-md">
        <div class="px-6 py-4 border-b border-gray-100">
            <div class="flex items-center justify-between">
                <h3 class="font-semibold text-gray-800">Add New Permission</h3>
                <button type="button" onclick="document.getElementById('addPermModal').classList.add('hidden')" class="text-gray-400 hover:text-gray-600">
                    <i class="fas fa-times"></i>
                </button>
            </div>
        </div>
        <form method="POST" action="{{ route('admin.permissions.add') }}" class="p-6 space-y-4">
            @csrf
            <div>
                <label class="block text-sm font-medium text-gray-700 mb-1">Permission Name</label>
                <input type="text" name="name" required placeholder="e.g. manage-reports"
                       pattern="[a-z\-]+" title="Lowercase letters and hyphens only"
                       class="w-full border border-gray-300 rounded-lg px-4 py-2.5 text-sm focus:ring-primary-500 focus:border-primary-500">
                <p class="text-xs text-gray-400 mt-1">Use lowercase with hyphens (e.g. view-analytics, manage-library)</p>
            </div>
            <div class="flex justify-end gap-3">
                <button type="button" onclick="document.getElementById('addPermModal').classList.add('hidden')"
                        class="px-4 py-2 text-sm text-gray-600 hover:text-gray-800">Cancel</button>
                <button type="submit" class="px-5 py-2 bg-primary-700 text-white text-sm font-medium rounded-lg hover:bg-primary-800 transition">
                    <i class="fas fa-plus mr-1"></i> Add
                </button>
            </div>
        </form>
    </div>
</div>

@push('scripts')
<script>
function toggleColumn(roleName, checked) {
    document.querySelectorAll(`input[data-role="${roleName}"]`).forEach(cb => {
        if (!cb.disabled) cb.checked = checked;
    });
}
</script>
@endpush
@endsection