@extends('layouts.master')

@section('content')
<link href="https://fonts.googleapis.com/css2?family=Cairo:wght@400;600;700;800&display=swap" rel="stylesheet">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">

<style>
    .font-cairo { font-family: 'Cairo', sans-serif !important; }
</style>

<div class="p-4 sm:p-6 space-y-6 font-cairo" dir="rtl">
    <!-- Header -->
    <div class="bg-white dark:bg-gray-800 p-6 rounded-2xl shadow-sm border border-gray-100 dark:border-gray-700 flex flex-col md:flex-row md:items-center md:justify-between gap-4">
        <div>
            <h1 class="text-2xl font-bold text-gray-900 dark:text-white flex items-center gap-2">
                <i class="fas fa-book-reader text-emerald-500"></i>
                إدارة مواد الخطة الدراسية: {{ $academicPlan->plan_name }}
            </h1>
            <p class="text-sm text-gray-500 dark:text-gray-400 mt-1">الرمز: <span class="font-mono text-emerald-600 font-bold">{{ $academicPlan->plan_code }}</span> | الكلية: {{ $academicPlan->college->name ?? '-' }} | البرنامج: {{ $academicPlan->section->name ?? '-' }}</p>
        </div>
        <div class="flex items-center gap-2">
            <a href="{{ route('academic-plans.show', $academicPlan->id) }}" class="px-4 py-2 bg-blue-600 hover:bg-blue-700 text-white font-bold rounded-xl text-sm transition shadow-md flex items-center gap-2">
                <i class="fas fa-eye"></i> معاينة الخطة
            </a>
            <a href="{{ route('academic-plans.index') }}" class="px-4 py-2 bg-gray-100 hover:bg-gray-200 text-gray-700 font-bold rounded-xl text-sm transition">
                <i class="fas fa-arrow-right"></i> القائمة
            </a>
        </div>
    </div>

    @if(session('success_message'))
        <div class="p-4 bg-emerald-50 border border-emerald-200 text-emerald-800 rounded-xl flex items-center gap-3">
            <i class="fas fa-check-circle text-emerald-600"></i>
            <div>{{ session('success_message') }}</div>
        </div>
    @endif

    @if(session('error_message'))
        <div class="p-4 bg-rose-50 border border-rose-200 text-rose-800 rounded-xl flex items-center gap-3">
            <i class="fas fa-exclamation-circle text-rose-600"></i>
            <div>{{ session('error_message') }}</div>
        </div>
    @endif

    <!-- Two Column Grid -->
    <div class="grid grid-cols-1 lg:grid-cols-12 gap-6">
        <!-- Right Column: Add Subject Form (4 cols) -->
        <div class="lg:col-span-4 bg-white dark:bg-gray-800 p-6 rounded-2xl shadow-sm border border-gray-100 dark:border-gray-700 h-fit space-y-4">
            <h2 class="text-base font-bold text-gray-800 dark:text-gray-200 border-b border-gray-100 dark:border-gray-700 pb-3 flex items-center gap-2">
                <i class="fas fa-plus-circle text-emerald-500"></i> إضافة مقرر إلى الخطة
            </h2>

            <form method="POST" action="{{ route('academic-plans.subjects.store', $academicPlan->id) }}" class="space-y-4">
                @csrf

                <div>
                    <label class="block text-xs font-bold text-gray-700 dark:text-gray-300 mb-1">الفصل الدراسي <span class="text-rose-500">*</span></label>
                    <select name="semester" required class="w-full bg-gray-50 dark:bg-gray-700 border border-gray-300 dark:border-gray-600 rounded-xl px-3 py-2 text-sm text-gray-800 dark:text-gray-200">
                        @for($i = 1; $i <= $academicPlan->total_semesters; $i++)
                            <option value="{{ $i }}">الفصل {{ $i }}</option>
                        @endfor
                    </select>
                </div>

                <div>
                    <label class="block text-xs font-bold text-gray-700 dark:text-gray-300 mb-1">اختر المقرر الدراسي <span class="text-rose-500">*</span></label>
                    <select name="subject_id" required class="w-full bg-gray-50 dark:bg-gray-700 border border-gray-300 dark:border-gray-600 rounded-xl px-3 py-2 text-sm text-gray-800 dark:text-gray-200">
                        <option value="">-- اختر مقرر --</option>
                        @foreach($availableSubjects as $sub)
                            <option value="{{ $sub->id }}" {{ isset($assignedSubjectIds[$sub->id]) ? 'disabled class="text-gray-400"' : '' }}>
                                {{ $sub->subjectcode }} - {{ $sub->subjectnamea }} ({{ $sub->credit_hours }} معتمدة)
                                {{ isset($assignedSubjectIds[$sub->id]) ? ' [مضاف مسبقاً]' : '' }}
                            </option>
                        @endforeach
                    </select>
                </div>

                <div class="flex items-center gap-2">
                    <input type="checkbox" name="is_core" value="1" checked id="is_core_cb" class="rounded border-gray-300 text-emerald-600 focus:ring-emerald-500">
                    <label for="is_core_cb" class="text-xs font-bold text-gray-700 dark:text-gray-300 cursor-pointer">مقرر إجباري (Core Subject)</label>
                </div>

                <button type="submit" class="w-full py-2.5 bg-emerald-600 hover:bg-emerald-700 text-white font-bold rounded-xl text-sm transition shadow-md flex items-center justify-center gap-2">
                    <i class="fas fa-plus"></i> إضافة للمخطط
                </button>
            </form>
        </div>

        <!-- Left Column: Semesters & Assigned Subjects (8 cols) -->
        <div class="lg:col-span-8 space-y-6">
            @for($semNum = 1; $semNum <= $academicPlan->total_semesters; $semNum++)
                @php
                    $semSubjects = $subjectsBySemester[$semNum] ?? [];
                @endphp
                <div class="bg-white dark:bg-gray-800 rounded-2xl shadow-sm border border-gray-100 dark:border-gray-700 overflow-hidden">
                    <div class="p-4 bg-gray-50 dark:bg-gray-700/50 border-b border-gray-100 dark:border-gray-700 flex items-center justify-between">
                        <h3 class="font-bold text-gray-900 dark:text-white flex items-center gap-2">
                            <i class="fas fa-calendar-alt text-emerald-500"></i>
                            الفصل {{ $semNum }}
                        </h3>
                        <span class="text-xs text-gray-500 font-semibold">
                            {{ count($semSubjects) }} مقررات | {{ collect($semSubjects)->sum('credit_hours') }} ساعة معتمدة
                        </span>
                    </div>

                    <div class="overflow-x-auto">
                        <table class="w-full text-sm text-right text-gray-600 dark:text-gray-300">
                            <thead class="bg-gray-100/50 dark:bg-gray-700/30 text-gray-700 dark:text-gray-300 text-xs uppercase">
                                <tr>
                                    <th class="p-3">رمز المقرر</th>
                                    <th class="p-3">اسم المقرر</th>
                                    <th class="p-3 text-center">النوع</th>
                                    <th class="p-3 text-center">الساعات</th>
                                    <th class="p-3 text-center">الإجراءات</th>
                                </tr>
                            </thead>
                            <tbody class="divide-y divide-gray-100 dark:divide-gray-700">
                                @forelse($semSubjects as $ps)
                                    <tr class="hover:bg-gray-50 dark:hover:bg-gray-700/30">
                                        <td class="p-3 font-mono font-bold text-emerald-600 dark:text-emerald-400">{{ $ps->subject_code ?? $ps->subject->subjectcode }}</td>
                                        <td class="p-3 font-bold text-gray-900 dark:text-white">{{ $ps->subject->subjectnamea ?? '-' }}</td>
                                        <td class="p-3 text-center">
                                            <span class="px-2.5 py-0.5 rounded-full text-xs font-bold {{ $ps->is_core ? 'bg-emerald-100 text-emerald-800' : 'bg-amber-100 text-amber-800' }}">
                                                {{ $ps->is_core ? 'إجباري' : 'اختياري' }}
                                            </span>
                                        </td>
                                        <td class="p-3 text-center font-bold text-gray-800 dark:text-gray-200">{{ $ps->credit_hours }}</td>
                                        <td class="p-3 text-center">
                                            <form method="POST" action="{{ route('academic-plans.subjects.destroy', [$academicPlan->id, $ps->id]) }}" onsubmit="return confirm('هل أنت تأكد من إزالة هذا المقرر من الخطة؟')">
                                                @csrf
                                                @method('DELETE')
                                                <button type="submit" class="px-3 py-1 bg-rose-50 text-rose-600 hover:bg-rose-100 rounded-lg text-xs font-bold transition">
                                                    <i class="fas fa-trash-alt"></i> إزالة
                                                </button>
                                            </form>
                                        </td>
                                    </tr>
                                @empty
                                    <tr>
                                        <td colspan="5" class="p-4 text-center text-gray-400 text-xs">لا توجد مواد مسندة للفصل {{ $semNum }}.</td>
                                    </tr>
                                @endforelse
                            </tbody>
                        </table>
                    </div>
                </div>
            @endfor
        </div>
    </div>
</div>
@endsection