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public function index() { $title = 'Trang chủ'; $courses = Course::all(); $enrollments = Auth::check() ? Enrollment::where('user_id', Auth::id())->get() : null; $userId = Auth::check() ? Auth::id() : null; $courseProgress = []; $enrollmentStatus = []; $links = []; $posts = Post::with('course')->latest()->get(); if ($userId) { foreach ($courses as $course) { $isEnrolled = Enrollment::where('user_id', $userId)->where('course_id', $course->id)->exists(); $enrollmentStatus[$course->id] = $isEnrolled; if ($isEnrolled) { $firstSection = Section::where('course_id', $course->id)->first(); if ($firstSection) { $firstLesson = Lesson::where('section_id', $firstSection->id)->first(); $lessonId = $firstLesson ? $firstLesson->id : null; $links[$course->id] = $lessonId ? route('lesson', $lessonId) : route('detail', $course->id); } else { $links[$course->id] = route('detail', $course->id); } } else { $links[$course->id] = route('detail', $course->id); } } } if ($userId) { foreach ($courses as $course) { $progress = UserCourseProgress::where('course_id', $course->id)->where('user_id', $userId)->first(); $courseProgress[$course->id] = $progress ? $progress->progress : 0; } } return view('index', compact('title', 'courses', 'enrollmentStatus', 'enrollments', 'links', 'courseProgress', 'posts')); }
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