@extends('student.layouts.app')

@section('title', $course->subject?->name ?: $course->name)

@section('content')
@php
    $isArabic = app()->getLocale() === 'ar';
@endphp

<div class="space-y-6">
    @include('student.courses.inc.overview', ['course' => $course])
    @include('student.courses.inc.tabs', ['course' => $course])

    <section class="grid gap-6 xl:grid-cols-[minmax(0,1.3fr)_minmax(21rem,0.85fr)]">
        <div class="student-card overflow-hidden">
            <div class="flex flex-col gap-4 border-b border-zinc-200 bg-zinc-50 px-6 py-5 dark:border-zinc-800 dark:bg-zinc-950 lg:flex-row lg:items-center lg:justify-between">
                <div>
                    <h2 class="text-xl font-black text-zinc-900 dark:text-white">{{ $isArabic ? 'الخط الزمني للمادة' : 'Course timeline' }}</h2>
                    <p class="mt-1 text-sm text-zinc-500 dark:text-zinc-400">{{ $isArabic ? 'كل ما يخص المادة في مسار واحد: مواد، مهام، اختبارات، وفصول افتراضية.' : 'Everything related to this course in one timeline: materials, assignments, quizzes, and live classes.' }}</p>
                </div>
                <div class="flex flex-wrap items-center gap-2">
                    @php
                        $filterLabels = [
                            'all'        => $isArabic ? 'الكل' : 'All',
                            'material'   => $isArabic ? 'مواد' : 'Materials',
                            'assignment' => $isArabic ? 'واجبات' : 'Assignments',
                            'quiz'       => $isArabic ? 'اختبارات' : 'Quizzes',
                            'live'       => $isArabic ? 'مباشر' : 'Live',
                        ];
                    @endphp
                    @foreach($filterLabels as $key => $label)
                    <button onclick="filterTimeline('{{ $key }}')" data-filter="{{ $key }}"
                        class="timeline-filter rounded-full border px-3 py-1 text-xs font-bold transition
                            {{ $key === 'all' ? 'border-brand-500 bg-brand-50 text-brand-700 dark:bg-brand-500/10 dark:text-brand-300' : 'border-zinc-200 text-zinc-500 hover:border-zinc-300 dark:border-zinc-700 dark:text-zinc-400' }}">
                        {{ $label }}
                    </button>
                    @endforeach
                    <div class="rounded-2xl border border-zinc-200 bg-white px-4 py-3 text-center dark:border-zinc-800 dark:bg-zinc-900">
                        <div class="text-[11px] font-black text-zinc-400">{{ $isArabic ? 'إجمالي العناصر' : 'Total items' }}</div>
                        <div class="mt-1 text-2xl font-black text-zinc-900 dark:text-white font-numbers" id="timeline-count">{{ $timeline->count() }}</div>
                    </div>
                </div>
            </div>

            <div class="p-6">
                @if ($timeline->isNotEmpty())
                    <div class="space-y-5" id="timeline-container">
                        @foreach ($timeline as $item)
                            <article data-type="{{ $item->type }}" class="timeline-item relative rounded-[1.75rem] border border-zinc-200 bg-white p-5 dark:border-zinc-800 dark:bg-zinc-900">
                                <div class="absolute bottom-0 top-0 start-10 hidden w-px bg-zinc-200 dark:bg-zinc-800 md:block"></div>
                                <div class="relative flex items-start gap-4">
                                    <div class="relative z-10 flex h-14 w-14 shrink-0 items-center justify-center rounded-2xl {{ $item->accent }}">
                                        <i class="fa-solid {{ $item->icon }} text-lg"></i>
                                    </div>
                                    <div class="min-w-0 flex-1">
                                        <div class="flex flex-col gap-3 md:flex-row md:items-start md:justify-between">
                                            <div class="min-w-0">
                                                <div class="flex flex-wrap items-center gap-2">
                                                    <span class="inline-flex items-center gap-2 rounded-full bg-zinc-100 px-3 py-1 text-[11px] font-black text-zinc-600 dark:bg-zinc-800 dark:text-zinc-300">
                                                        <i class="fa-solid {{ $item->icon }} text-[10px]"></i>
                                                        <span>{{ $item->label }}</span>
                                                    </span>
                                                    @if ($item->meta)
                                                        <span class="rounded-full bg-primary-light px-3 py-1 text-[11px] font-black text-primary dark:bg-primary/10 dark:text-primary-container">{{ $item->meta }}</span>
                                                    @endif
                                                </div>
                                                <h3 class="mt-3 text-lg font-black text-zinc-900 dark:text-white">{{ $item->title }}</h3>
                                                @if ($item->description)
                                                    <p class="mt-2 text-sm leading-7 text-zinc-600 dark:text-zinc-300">{{ $item->description }}</p>
                                                @endif
                                            </div>
                                            <div class="text-start md:text-end">
                                                <div class="text-sm font-black text-zinc-900 dark:text-white">{{ optional($item->date)->format('Y-m-d h:i A') }}</div>
                                                <div class="mt-1 text-xs font-semibold text-zinc-500 dark:text-zinc-400">{{ optional($item->date)->diffForHumans() }}</div>
                                            </div>
                                        </div>

                                        <div class="mt-4 flex flex-wrap items-center justify-between gap-3">
                                            <a href="{{ $item->url }}" class="inline-flex items-center gap-2 rounded-2xl bg-primary px-4 py-2 text-sm font-black text-white text-decoration-none">
                                                <i class="fa-solid fa-arrow-up-right-from-square text-xs"></i>
                                                {{ $isArabic ? 'فتح العنصر' : 'Open item' }}
                                            </a>
                                            <div class="inline-flex items-center gap-2 text-xs font-bold text-zinc-400 dark:text-zinc-500">
                                                <i class="fa-solid {{ $item->icon }}"></i>
                                                <span>{{ $course->name }}</span>
                                            </div>
                                        </div>
                                    </div>
                                </div>
                            </article>
                        @endforeach
                    </div>
                @else
                    <div class="rounded-[1.75rem] border border-dashed border-zinc-300 p-10 text-center dark:border-zinc-700">
                        <div class="mx-auto flex h-16 w-16 items-center justify-center rounded-3xl bg-zinc-100 text-zinc-500 dark:bg-zinc-800 dark:text-zinc-300">
                            <i class="fa-solid fa-timeline text-2xl"></i>
                        </div>
                        <h3 class="mt-4 text-lg font-black text-zinc-900 dark:text-white">{{ $isArabic ? 'لا يوجد محتوى داخل هذه المادة بعد' : 'No content in this course yet' }}</h3>
                        <p class="mt-2 text-sm text-zinc-500 dark:text-zinc-400">{{ $isArabic ? 'ستظهر هنا كل العناصر بمجرد إضافتها إلى المادة.' : 'All course items will appear here once they are added.' }}</p>
                    </div>
                @endif
            </div>
        </div>

        <div class="space-y-6">
            @if($lessons->isNotEmpty())
            @php
                $totalLessons = $lessons->count();
                $completedCount = count($completedLessonIds);
                $progressPercent = $totalLessons > 0 ? (int)(($completedCount / $totalLessons) * 100) : 0;
            @endphp
            <div class="student-card p-6">
                <div class="flex items-center justify-between mb-3">
                    <h3 class="text-xl font-black text-zinc-900 dark:text-white">{{ $isArabic ? 'الدروس' : 'Lessons' }}</h3>
                    <span class="text-sm font-bold text-zinc-500 dark:text-zinc-400">{{ $completedCount }}/{{ $totalLessons }}</span>
                </div>
                {{-- Progress Bar --}}
                <div class="mb-4 h-2.5 w-full rounded-full bg-zinc-200 dark:bg-zinc-700">
                    <div class="h-2.5 rounded-full bg-primary transition-all duration-500" style="width: {{ $progressPercent }}%"></div>
                </div>
                <p class="mb-4 text-xs text-zinc-500 dark:text-zinc-400">{{ $progressPercent }}% {{ $isArabic ? 'مكتمل' : 'completed' }}</p>

                {{-- Lessons List --}}
                <div class="space-y-2">
                    @foreach($lessons as $lesson)
                    @php $isDone = in_array($lesson->id, $completedLessonIds); @endphp
                    <div x-data="{ done: {{ $isDone ? 'true' : 'false' }}, loading: false }"
                         class="flex items-center justify-between rounded-2xl border px-4 py-3 transition"
                         :class="done ? 'border-green-200 bg-green-50 dark:border-green-800 dark:bg-green-950/30' : 'border-zinc-200 bg-zinc-50 dark:border-zinc-800 dark:bg-zinc-950'">
                        <div class="flex items-center gap-3 min-w-0">
                            <div class="flex h-8 w-8 shrink-0 items-center justify-center rounded-xl transition"
                                 :class="done ? 'bg-green-500 text-white' : 'bg-zinc-200 text-zinc-500 dark:bg-zinc-700 dark:text-zinc-400'">
                                <i class="fa-solid text-xs" :class="done ? 'fa-check' : 'fa-book-open'"></i>
                            </div>
                            <span class="text-sm font-bold text-zinc-900 dark:text-white truncate">{{ $lesson->title }}</span>
                        </div>
                        <button @click="
                            loading = true;
                            fetch('{{ route('student.lessons.complete', $lesson->id) }}', {
                                method: 'POST',
                                headers: { 'X-CSRF-TOKEN': '{{ csrf_token() }}', 'Accept': 'application/json' }
                            })
                            .then(r => r.json())
                            .then(data => { done = data.completed; loading = false; })
                            .catch(() => { loading = false; });
                        "
                        :disabled="loading"
                        class="ms-3 shrink-0 rounded-xl px-3 py-1.5 text-xs font-black transition"
                        :class="done ? 'bg-green-100 text-green-700 hover:bg-green-200 dark:bg-green-900/40 dark:text-green-300' : 'bg-primary text-white hover:bg-primary/90'">
                            <span x-show="!loading">
                                <span x-show="done">{{ $isArabic ? 'مكتمل ✓' : 'Done ✓' }}</span>
                                <span x-show="!done">{{ $isArabic ? 'تم الإنهاء' : 'Mark done' }}</span>
                            </span>
                            <span x-show="loading"><i class="fa-solid fa-spinner fa-spin"></i></span>
                        </button>
                    </div>
                    @endforeach
                </div>
            </div>
            @endif

            <div class="student-card p-6">
                <h3 class="text-xl font-black text-zinc-900 dark:text-white">{{ $isArabic ? 'ملخص سريع' : 'Quick summary' }}</h3>
                <div class="mt-5 grid gap-3">
                    <div class="rounded-2xl bg-zinc-50 px-4 py-4 dark:bg-zinc-950">
                        <div class="text-[11px] font-black text-zinc-400">{{ $isArabic ? 'المواد التعليمية' : 'Materials' }}</div>
                        <div class="mt-1 text-2xl font-black text-zinc-900 dark:text-white font-numbers">{{ $materials->count() }}</div>
                    </div>
                    <div class="rounded-2xl bg-zinc-50 px-4 py-4 dark:bg-zinc-950">
                        <div class="text-[11px] font-black text-zinc-400">{{ $isArabic ? 'المهام' : 'Assignments' }}</div>
                        <div class="mt-1 text-2xl font-black text-zinc-900 dark:text-white font-numbers">{{ $assignments->count() }}</div>
                    </div>
                    <div class="rounded-2xl bg-zinc-50 px-4 py-4 dark:bg-zinc-950">
                        <div class="text-[11px] font-black text-zinc-400">{{ $isArabic ? 'الاختبارات' : 'Quizzes' }}</div>
                        <div class="mt-1 text-2xl font-black text-zinc-900 dark:text-white font-numbers">{{ $quizzes->count() }}</div>
                    </div>
                    <div class="rounded-2xl bg-zinc-50 px-4 py-4 dark:bg-zinc-950">
                        <div class="text-[11px] font-black text-zinc-400">{{ $isArabic ? 'الفصول الافتراضية' : 'Live classes' }}</div>
                        <div class="mt-1 text-2xl font-black text-zinc-900 dark:text-white font-numbers">{{ $virtualClassRooms->count() }}</div>
                    </div>
                </div>
            </div>

            <div class="student-card p-6">
                <h3 class="text-xl font-black text-zinc-900 dark:text-white">{{ $isArabic ? 'اختصارات' : 'Shortcuts' }}</h3>
                <div class="mt-4 space-y-3">
                    <a href="{{ route('student.courses.materials.index', $course->id) }}" class="flex items-center justify-between rounded-2xl bg-zinc-50 px-4 py-4 text-decoration-none dark:bg-zinc-950">
                        <div>
                            <div class="text-sm font-black text-zinc-900 dark:text-white">{{ $isArabic ? 'المواد الدراسية' : 'Materials' }}</div>
                            <div class="mt-1 text-xs text-zinc-500 dark:text-zinc-400">{{ $isArabic ? 'فتح كل المواد التعليمية للمادة.' : 'Open all learning materials for this course.' }}</div>
                        </div>
                        <i class="fa-solid fa-folder-open text-primary"></i>
                    </a>
                    <a href="{{ route('student.courses.assignments.index', $course->id) }}" class="flex items-center justify-between rounded-2xl bg-zinc-50 px-4 py-4 text-decoration-none dark:bg-zinc-950">
                        <div>
                            <div class="text-sm font-black text-zinc-900 dark:text-white">{{ $isArabic ? 'المهام' : 'Assignments' }}</div>
                            <div class="mt-1 text-xs text-zinc-500 dark:text-zinc-400">{{ $isArabic ? 'مراجعة كل الواجبات والتسليمات.' : 'Review all assignments and submissions.' }}</div>
                        </div>
                        <i class="fa-solid fa-list-check text-primary"></i>
                    </a>
                    <a href="{{ route('student.courses.virtual-class-rooms.index', $course->id) }}" class="flex items-center justify-between rounded-2xl bg-zinc-50 px-4 py-4 text-decoration-none dark:bg-zinc-950">
                        <div>
                            <div class="text-sm font-black text-zinc-900 dark:text-white">{{ $isArabic ? 'الفصول الافتراضية' : 'Live classes' }}</div>
                            <div class="mt-1 text-xs text-zinc-500 dark:text-zinc-400">{{ $isArabic ? 'عرض الجلسات المباشرة القادمة والجارية.' : 'View ongoing and upcoming live sessions.' }}</div>
                        </div>
                        <i class="fa-solid fa-video text-primary"></i>
                    </a>
                </div>
            </div>
        </div>
    </section>
</div>

@push('scripts')
<script>
function filterTimeline(type) {
    const items = document.querySelectorAll('.timeline-item');
    const buttons = document.querySelectorAll('.timeline-filter');
    let visible = 0;

    items.forEach(item => {
        const show = type === 'all' || item.dataset.type === type;
        item.style.display = show ? '' : 'none';
        if (show) visible++;
    });

    buttons.forEach(btn => {
        const active = btn.dataset.filter === type;
        btn.classList.toggle('border-brand-500', active);
        btn.classList.toggle('bg-brand-50', active);
        btn.classList.toggle('text-brand-700', active);
        btn.classList.toggle('dark:bg-brand-500/10', active);
        btn.classList.toggle('dark:text-brand-300', active);
        btn.classList.toggle('border-zinc-200', !active);
        btn.classList.toggle('text-zinc-500', !active);
    });

    const counter = document.getElementById('timeline-count');
    if (counter) counter.textContent = visible;
}
</script>
@endpush
@endsection