from django.contrib.auth.mixins import LoginRequiredMixin
from django.core.exceptions import PermissionDenied
from django.http import JsonResponse
from django.views.generic import DetailView
from django.views.generic import FormView

from .forms import FileForm
from .forms import ImageFileForm
from .models import File
from .models import ImageFile


class FileUpload(LoginRequiredMixin, FormView):
    model = File
    form_class = FileForm

    def form_valid(self, form):
        self.object = form.save(commit=False)
        self.object.user = self.request.user
        self.object.save()

        return JsonResponse(
            {
                "is_valid": True,
                "url": self.object.file.url,
                "name": self.object.file.name,
                "id": self.object.pk,
            }
        )

    def form_invalid(self, form):
        return JsonResponse({"is_valid": False, "errors": form.errors})


class ImageFileUpload(FileUpload):
    model = ImageFile
    form_class = ImageFileForm


class FileDelete(LoginRequiredMixin, DetailView):
    model = File

    def get(self, request, *args, **kwargs):
        return self.post(request, *args, **kwargs)

    def post(self, request, *args, **kwargs):
        self.object = self.get_object()

        if request.user != self.object.user:
            raise PermissionDenied

        self.object.delete()

        return JsonResponse({"success": True})


class ImageFileDelete(FileDelete):
    model = ImageFile