import structlog
from django.views.decorators.cache import cache_page
from rest_framework.decorators import api_view
from rest_framework.response import Response
from wagtail.models import Page

from vbv_lernwelt.course.models import CourseCompletion, CoursePage
from vbv_lernwelt.course.serializers import CourseCompletionSerializer
from vbv_lernwelt.learnpath.utils import get_wagtail_type

logger = structlog.get_logger(__name__)


@api_view(["GET"])
@cache_page(60 * 60 * 8, cache="api_page_cache")
def page_api_view(request, slug):
    try:
        page = Page.objects.get(slug=slug, locale__language_code="de-CH")
        serializer = page.specific.get_serializer_class()(page.specific)
        return Response(serializer.data)
    except Exception as e:
        logger.error(e)
        return Response({"error": str(e)}, status=404)


@api_view(["GET"])
def request_course_completion(request, course_id):
    response_data = CourseCompletionSerializer(
        CourseCompletion.objects.filter(user=request.user, course_id=course_id),
        many=True,
    ).data

    return Response(status=200, data=response_data)


@api_view(["POST"])
def mark_course_completion(request):
    page_key = request.data.get("page_key")
    completion_status = request.data.get("completion_status", "success")

    page = Page.objects.get(translation_key=page_key, locale__language_code="de-CH")
    page_type = get_wagtail_type(page.specific)
    course = CoursePage.objects.ancestor_of(page).first().specific.course

    cc, created = CourseCompletion.objects.get_or_create(
        user=request.user,
        page_key=page_key,
        course_id=course.id,
    )
    cc.page_slug = page.slug
    cc.page_type = page_type
    cc.completion_status = completion_status
    cc.save()

    response_data = CourseCompletionSerializer(
        CourseCompletion.objects.filter(user=request.user, course_id=course.id),
        many=True,
    ).data

    logger.debug(
        "mark_course_completion successful",
        label="completion_api",
        page_key=page_key,
        page_type=page_type,
        page_slug=page.slug,
        page_title=page.title,
        user_id=request.user.id,
        course_id=course.id,
        completion_status=completion_status,
    )

    return Response(status=200, data=response_data)