from django.contrib import messages from django.contrib.auth.decorators import login_required from django.db.models import Q from django.http import HttpResponse, JsonResponse from django.shortcuts import get_object_or_404, redirect, render from django.urls import reverse from django.utils import timezone from courses.models import Category, Course, Lesson, Evaluation, Module from .models import Enrollment, LessonProgress from certificates.models import Certificate @login_required(login_url="users:login") def portal_catalog_view(request): """ Catálogo interno para alumnos en el Campus Virtual. """ categories = Category.objects.all() courses = Course.objects.filter(is_published=True).select_related("category") category_slug = request.GET.get("category") query = request.GET.get("q") if category_slug: courses = courses.filter(category__slug=category_slug) if query: courses = courses.filter( Q(title__icontains=query) | Q(short_description__icontains=query) | Q(iso_standard__icontains=query) | Q(description__icontains=query) ) enrolled_course_ids = set(Enrollment.objects.filter(user=request.user).values_list("course_id", flat=True)) context = { "categories": categories, "courses": courses, "selected_category": category_slug, "search_query": query or "", "enrolled_course_ids": enrolled_course_ids, } return render(request, "pages/portal_catalog.html", context) @login_required def enroll_course_view(request, slug): """ Procesar inscripción / matrícula del técnico al curso. """ if request.method != "POST": return redirect("courses:course_detail", slug=slug) course = get_object_or_404(Course, slug=slug, is_published=True) enrollment, created = Enrollment.objects.get_or_create(user=request.user, course=course) if created: for module in course.modules.all(): for lesson in module.lessons.all(): LessonProgress.objects.get_or_create(enrollment=enrollment, lesson=lesson) messages.success(request, f"¡Te has matriculado exitosamente en {course.title}!") else: messages.info(request, "Ya te encontrabas inscrito en este programa.") first_module = course.modules.first() if first_module and first_module.lessons.exists(): first_lesson = first_module.lessons.first() return redirect("campus:lesson_player", slug=course.slug, lesson_slug=first_lesson.slug) return redirect("courses:course_detail", slug=course.slug) @login_required def course_resume_view(request, slug): """ Enrutador inteligente: Lleva al alumno a su lección pendiente o a la primera lección del curso. """ course = get_object_or_404(Course.objects.prefetch_related("modules__lessons"), slug=slug, is_published=True) enrollment, _ = Enrollment.objects.get_or_create(user=request.user, course=course) all_lessons = list(Lesson.objects.filter(module__course=course).order_by("module__order", "order", "id")) if not all_lessons: return redirect("courses:course_detail", slug=course.slug) for l in all_lessons: LessonProgress.objects.get_or_create(enrollment=enrollment, lesson=l) completed_lesson_ids = set(LessonProgress.objects.filter(enrollment=enrollment, is_completed=True).values_list("lesson_id", flat=True)) target_lesson = None for l in all_lessons: if l.id not in completed_lesson_ids: target_lesson = l break if not target_lesson: target_lesson = all_lessons[0] return redirect("campus:lesson_player", slug=course.slug, lesson_slug=target_lesson.slug) @login_required def lesson_player_view(request, slug, lesson_slug): """ Aula Virtual / Reproductor de video y material de estudio de una lección. """ course = get_object_or_404(Course.objects.prefetch_related("modules__lessons"), slug=slug, is_published=True) lesson = get_object_or_404(Lesson.objects.select_related("module"), module__course=course, slug=lesson_slug) enrollment, _ = Enrollment.objects.get_or_create(user=request.user, course=course) progress, _ = LessonProgress.objects.get_or_create(enrollment=enrollment, lesson=lesson) all_lessons = list(Lesson.objects.filter(module__course=course).order_by("module__order", "order", "id")) current_index = all_lessons.index(lesson) if lesson in all_lessons else 0 prev_lesson = all_lessons[current_index - 1] if current_index > 0 else None next_lesson = all_lessons[current_index + 1] if current_index < len(all_lessons) - 1 else None progress_map = { lp.lesson_id: lp.is_completed for lp in LessonProgress.objects.filter(enrollment=enrollment) } first_evaluation = course.evaluations.first() context = { "course": course, "lesson": lesson, "enrollment": enrollment, "progress": progress, "prev_lesson": prev_lesson, "next_lesson": next_lesson, "progress_map": progress_map, "progress_percent": enrollment.get_progress_percentage(), "first_evaluation": first_evaluation, } return render(request, "pages/lesson_player.html", context) @login_required def lesson_toggle_progress_view(request, lesson_id): """ AJAX / HTMX o POST para marcar una lección como completada. """ if request.method != "POST": return redirect("campus:my_learning") lesson = get_object_or_404(Lesson.objects.select_related("module__course"), id=lesson_id) course = lesson.module.course enrollment = get_object_or_404(Enrollment, user=request.user, course=course) progress, _ = LessonProgress.objects.get_or_create(enrollment=enrollment, lesson=lesson) progress.is_completed = not progress.is_completed if progress.is_completed: progress.completed_at = timezone.now() else: progress.completed_at = None progress.save() if request.headers.get("HX-Request"): all_lessons = list(Lesson.objects.filter(module__course=course).order_by("module__order", "order", "id")) current_index = all_lessons.index(lesson) if lesson in all_lessons else 0 next_lesson = all_lessons[current_index + 1] if current_index < len(all_lessons) - 1 else None if progress.is_completed and next_lesson: return HttpResponse(status=204, headers={"HX-Redirect": reverse("campus:lesson_player", kwargs={"slug": course.slug, "lesson_slug": next_lesson.slug})}) return redirect("campus:lesson_player", slug=course.slug, lesson_slug=lesson.slug) @login_required def my_learning_view(request): """ Portal / Dashboard del Alumno (/mi-aprendizaje/). """ enrollments = Enrollment.objects.filter(user=request.user).select_related("course", "certificate").order_by("-enrolled_at") in_progress = [] completed = [] for enroll in enrollments: percent = enroll.get_progress_percentage() if hasattr(enroll, "certificate") and enroll.certificate: completed.append({"enrollment": enroll, "percent": 100}) elif percent >= 100: completed.append({"enrollment": enroll, "percent": 100}) else: in_progress.append({"enrollment": enroll, "percent": percent}) context = { "in_progress": in_progress, "completed": completed, } return render(request, "pages/my_learning.html", context) @login_required def quiz_detail_view(request, slug, evaluation_id): course = get_object_or_404(Course, slug=slug) evaluation = get_object_or_404(Evaluation, id=evaluation_id, course=course) enrollment, _ = Enrollment.objects.get_or_create(user=request.user, course=course) context = { "course": course, "evaluation": evaluation, "enrollment": enrollment, "questions_count": len(evaluation.questions) if isinstance(evaluation.questions, list) else 0, } return render(request, "pages/quiz.html", context) @login_required def quiz_submit_view(request, slug, evaluation_id): if request.method != "POST": return redirect("campus:quiz_detail", slug=slug, evaluation_id=evaluation_id) course = get_object_or_404(Course, slug=slug) evaluation = get_object_or_404(Evaluation, id=evaluation_id, course=course) enrollment, _ = Enrollment.objects.get_or_create(user=request.user, course=course) questions = evaluation.questions if isinstance(evaluation.questions, list) else [] total_questions = len(questions) if total_questions == 0: messages.error(request, "Este examen no tiene preguntas configuradas.") return redirect("courses:course_detail", slug=slug) correct_count = 0 results_detail = [] for idx, q in enumerate(questions): q_id = str(q.get("id", idx + 1)) user_answer_idx = request.POST.get(f"question_{q_id}") correct_idx = q.get("correct") is_correct = False if user_answer_idx is not None and str(user_answer_idx) == str(correct_idx): is_correct = True correct_count += 1 results_detail.append({ "id": q_id, "text": q.get("text", ""), "user_answer": user_answer_idx, "correct_answer": correct_idx, "is_correct": is_correct, }) score_percentage = int((correct_count / total_questions) * 100) if total_questions > 0 else 0 passed = score_percentage >= evaluation.passing_score certificate = None if passed: certificate, created = Certificate.objects.get_or_create(enrollment=enrollment) for lesson in Lesson.objects.filter(module__course=course): LessonProgress.objects.update_or_create( enrollment=enrollment, lesson=lesson, defaults={"is_completed": True} ) if request.headers.get("HX-Request") == "true": return JsonResponse({ "score": score_percentage, "passed": passed, "correct_count": correct_count, "total_questions": total_questions, "certificate_code": certificate.certificate_code if certificate else None, "certificate_url": reverse("certificates:download", args=[certificate.certificate_code]) if certificate else None, }) context = { "course": course, "evaluation": evaluation, "score": score_percentage, "passed": passed, "correct_count": correct_count, "total_questions": total_questions, "certificate": certificate, "results_detail": results_detail, } return render(request, "pages/quiz_result.html", context)