@extends('layouts.main_dashboard.app')

@section('title', __('dashboard.Course Assignments'))
@section('page_heading', __('dashboard.Course Assignments'))
@section('page_subtitle', app()->getLocale() === 'ar' ? 'إسناد المعلمين للمقررات من واجهة أكثر وضوحًا مع مراجعة سريعة لحالة كل مساق.' : 'Assign teachers to courses from a clearer interface with a quick review of each course status.')
@section('skip_page_hero', true)

@php
    $routePrefix = auth()->user()?->usesStaffPortal() ? 'teacher' : 'admin';
    $isArabic = app()->getLocale() === 'ar';
    $assignedCount = $courses->whereNotNull('teacher_id')->count();
    $unassignedCount = $courses->count() - $assignedCount;
    $subjects = $courses->pluck('subject')->unique('id')->filter();
    $schoolClasses = $courses->pluck('schoolClass')->unique('id')->filter();
    $filters = [
        'subject_id' => request('subject_id'),
        'school_class_id' => request('school_class_id'),
        'teacher_id' => request('teacher_id'),
    ];
@endphp

@section('content')
<div class="space-y-6">
    <section class="rounded-xl border border-surface-200 bg-white p-6 shadow-sm dark:border-surface-800 dark:bg-surface-900">
        <div class="flex flex-col gap-5 lg:flex-row lg:items-center lg:justify-between">
            <div class="space-y-2">
                <h2 class="text-2xl font-black tracking-tight text-surface-900 dark:text-white">{{ __('dashboard.Course Assignments') }}</h2>
                <p class="max-w-2xl text-sm leading-7 text-surface-500 dark:text-surface-400">
                    {{ $isArabic ? 'وزّع المقررات على المعلمين من شاشة مباشرة تبرز المساقات غير المسندة وتسهّل تحديث الإسناد بسرعة.' : 'Assign courses to teachers from a direct screen that highlights unassigned courses and speeds up updates.' }}
                </p>
            </div>
        </div>
    </section>

    <section class="overflow-hidden rounded-xl border border-surface-200 bg-white shadow-sm dark:border-surface-800 dark:bg-surface-900">
        <div class="border-b border-surface-200 bg-surface-50/80 px-6 py-5 dark:border-surface-800 dark:bg-surface-800/30">
            <div class="flex flex-col gap-4 lg:flex-row lg:items-end lg:justify-between">
                <div class="space-y-1">
                    <p class="text-[11px] font-black uppercase tracking-[0.24em] text-surface-400">{{ $isArabic ? 'متابعة الإسناد' : 'Assignment overview' }}</p>
                    <h2 class="text-xl font-black text-surface-900 dark:text-white">{{ $isArabic ? 'حالة المقررات' : 'Course status' }}</h2>
                    <p class="text-sm text-surface-500 dark:text-surface-400">{{ $isArabic ? 'راجع عدد المقررات المسندة وغير المسندة قبل تنفيذ التحديثات.' : 'Review assigned and unassigned courses before updating any record.' }}</p>
                </div>

                <div class="grid grid-cols-1 gap-3 sm:grid-cols-3 lg:min-w-[34rem]">
                    <div class="rounded-2xl border border-surface-200 bg-white px-4 py-3 dark:border-surface-700 dark:bg-surface-900">
                        <p class="text-[11px] font-bold text-surface-500 dark:text-surface-400">{{ __('dashboard.Total courses') }}</p>
                        <p class="mt-1 text-2xl font-black leading-none text-surface-900 dark:text-white">{{ $courses->count() }}</p>
                    </div>
                    <div class="rounded-2xl border border-surface-200 bg-white px-4 py-3 dark:border-surface-700 dark:bg-surface-900">
                        <p class="text-[11px] font-bold text-surface-500 dark:text-surface-400">{{ __('dashboard.Assigned courses') }}</p>
                        <p class="mt-1 text-2xl font-black leading-none text-surface-900 dark:text-white">{{ $assignedCount }}</p>
                    </div>
                    <div class="rounded-2xl border border-surface-200 bg-white px-4 py-3 dark:border-surface-700 dark:bg-surface-900">
                        <p class="text-[11px] font-bold text-surface-500 dark:text-surface-400">{{ __('dashboard.Unassigned courses') }}</p>
                        <p class="mt-1 text-2xl font-black leading-none text-surface-900 dark:text-white">{{ $unassignedCount }}</p>
                    </div>
                </div>
            </div>
        </div>

        <div class="border-b border-surface-200 px-6 py-6 dark:border-surface-800">
            <div class="flex flex-col gap-4 lg:flex-row lg:items-end lg:justify-between">
                <div class="space-y-1">
                    <p class="text-sm font-black text-surface-900 dark:text-white">{{ $isArabic ? 'تصفية قائمة الإسناد' : 'Filter assignments' }}</p>
                    <p class="text-sm text-surface-500 dark:text-surface-400">{{ $isArabic ? 'اعرض المقررات حسب المادة أو الصف أو المعلم الحالي.' : 'Filter assignments by subject, class, or current teacher.' }}</p>
                </div>

                <form method="GET" action="{{ route($routePrefix . '.course-assignments.index') }}" class="grid gap-3 md:grid-cols-2 xl:grid-cols-5">
                    <select name="subject_id" class="rounded-xl border border-surface-200 bg-white px-4 py-3 text-sm text-surface-700 outline-none transition focus:border-brand-400 dark:border-surface-700 dark:bg-surface-950 dark:text-surface-100">
                        <option value="">{{ __('dashboard.Subject') }}</option>
                        @foreach($subjects as $subject)
                            <option value="{{ $subject->id }}" @selected($filters['subject_id'] == $subject->id)>{{ $subject->name }}</option>
                        @endforeach
                    </select>
                    <select name="school_class_id" class="rounded-xl border border-surface-200 bg-white px-4 py-3 text-sm text-surface-700 outline-none transition focus:border-brand-400 dark:border-surface-700 dark:bg-surface-950 dark:text-surface-100">
                        <option value="">{{ __('dashboard.School Class') }}</option>
                        @foreach($schoolClasses as $class)
                            <option value="{{ $class->id }}" @selected($filters['school_class_id'] == $class->id)>{{ $class->name }}</option>
                        @endforeach
                    </select>
                    <select name="teacher_id" class="rounded-xl border border-surface-200 bg-white px-4 py-3 text-sm text-surface-700 outline-none transition focus:border-brand-400 dark:border-surface-700 dark:bg-surface-950 dark:text-surface-100">
                        <option value="">{{ __('dashboard.Select Teacher') }}</option>
                        @foreach($teachers as $teacher)
                            <option value="{{ $teacher->id }}" @selected($filters['teacher_id'] == $teacher->id)>{{ $teacher->first_name }} {{ $teacher->last_name }}</option>
                        @endforeach
                    </select>
                    <button type="submit" class="inline-flex items-center justify-center gap-2 rounded-xl bg-brand-600 px-4 py-3 text-sm font-bold text-white transition hover:bg-brand-700">
                        <i class="fa-solid fa-magnifying-glass text-xs"></i>
                        <span>{{ __('dashboard.Apply filters') }}</span>
                    </button>
                    <a href="{{ route($routePrefix . '.course-assignments.index') }}" class="inline-flex items-center justify-center rounded-xl border border-surface-200 px-4 py-3 text-sm font-bold text-surface-600 transition hover:bg-surface-50 dark:border-surface-700 dark:text-surface-300 dark:hover:bg-surface-800">{{ __('dashboard.Reset filters') }}</a>
                </form>
            </div>
        </div>

        @if($courses->isEmpty())
            <div class="px-6 py-16 text-center text-sm text-surface-500 dark:text-surface-400">
                {{ __('dashboard.No courses found for your department.') }}
            </div>
        @else
            <div class="overflow-x-auto">
                <table class="min-w-full divide-y divide-surface-200 dark:divide-surface-800">
                    <thead class="bg-surface-50/80 dark:bg-surface-800/40">
                        <tr class="text-right text-xs font-black uppercase tracking-[0.2em] text-surface-500 dark:text-surface-400">
                            <th class="px-6 py-4">{{ __('dashboard.Course') }}</th>
                            <th class="px-6 py-4">{{ __('dashboard.Subject') }}</th>
                            <th class="px-6 py-4">{{ __('dashboard.School Class') }}</th>
                            <th class="px-6 py-4">{{ __('dashboard.Current Teacher') }}</th>
                            <th class="px-6 py-4">{{ $isArabic ? 'تحديث الإسناد' : 'Update assignment' }}</th>
                        </tr>
                    </thead>
                    <tbody class="divide-y divide-surface-200 dark:divide-surface-800">
                        @foreach($courses as $course)
                            <tr class="transition hover:bg-surface-50/80 dark:hover:bg-surface-800/20">
                                <td class="px-6 py-5">
                                    <p class="text-sm font-black text-surface-900 dark:text-white">{{ $course->name }}</p>
                                    <p class="mt-1 text-xs text-surface-500 dark:text-surface-400">#{{ $course->id }}</p>
                                </td>
                                <td class="px-6 py-5 text-sm text-surface-600 dark:text-surface-300">{{ $course->subject->name ?? '-' }}</td>
                                <td class="px-6 py-5 text-sm text-surface-600 dark:text-surface-300">{{ $course->schoolClass->name ?? '-' }}</td>
                                <td class="px-6 py-5">
                                    @if($course->teacher)
                                        <span class="inline-flex rounded-full bg-brand-50 px-3 py-1 text-xs font-bold text-brand-700 dark:bg-brand-500/10 dark:text-brand-300">{{ $course->teacher->first_name }} {{ $course->teacher->last_name }}</span>
                                    @else
                                        <span class="inline-flex rounded-full bg-surface-100 px-3 py-1 text-xs font-bold text-surface-600 dark:bg-surface-800 dark:text-surface-300">{{ __('dashboard.Not Assigned') }}</span>
                                    @endif
                                </td>
                                <td class="px-6 py-5">
                                    <form action="{{ route($routePrefix . '.course-assignments.update', $course->id) }}" method="POST" class="flex flex-col gap-3 xl:flex-row xl:items-center">
                                        @csrf
                                        @method('PUT')
                                        <select name="teacher_id" class="min-w-[15rem] rounded-xl border border-surface-200 bg-white px-4 py-2.5 text-sm text-surface-700 outline-none transition focus:border-brand-400 dark:border-surface-700 dark:bg-surface-950 dark:text-surface-100 xl:flex-1">
                                            <option value="">{{ __('dashboard.Select Teacher') }}</option>
                                            @foreach($teachers as $teacher)
                                                <option value="{{ $teacher->id }}" {{ $course->teacher_id == $teacher->id ? 'selected' : '' }}>
                                                    {{ $teacher->first_name }} {{ $teacher->last_name }}
                                                </option>
                                            @endforeach
                                        </select>
                                        <button type="submit" class="inline-flex items-center justify-center gap-2 rounded-xl bg-brand-600 px-4 py-2.5 text-sm font-bold text-white transition hover:bg-brand-700">
                                            <i class="fa-solid fa-user-check text-xs"></i>
                                            <span>{{ __('dashboard.Assign Teacher') }}</span>
                                        </button>
                                    </form>
                                </td>
                            </tr>
                        @endforeach
                    </tbody>
                </table>
            </div>

            @if ($courses->hasPages())
                <div class="border-t border-surface-200 px-6 py-5 dark:border-surface-800">
                    {{ $courses->appends(request()->query())->links('pagination::simple-tailwind') }}
                </div>
            @endif
        @endif
    </section>
</div>
@endsection