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from django.core.exceptions import PermissionDenied
from django.db import models
from django.http import JsonResponse
from django.shortcuts import get_object_or_404, redirect, render
from django.utils.decorators import method_decorator
from django.views.generic import TemplateView, View
from activities.models import Post, PostInteraction, PostInteractionStates, PostStates
from core.decorators import per_identity_cache_page
from core.ld import canonicalise
from users.decorators import identity_required
from users.shortcuts import by_handle_or_404
@method_decorator(per_identity_cache_page("cache_timeout_page_post"), name="dispatch")
class Individual(TemplateView):
template_name = "activities/post.html"
def get(self, request, handle, post_id):
self.identity = by_handle_or_404(self.request, handle, local=False)
self.post_obj = get_object_or_404(self.identity.posts, pk=post_id)
# If they're coming in looking for JSON, they want the actor
accept = request.headers.get("accept", "text/html").lower()
if (
"application/json" in accept
or "application/ld" in accept
or "application/activity" in accept
):
# Return post JSON
return self.serve_object()
else:
# Show normal page
return super().get(request)
def get_context_data(self):
parent = None
if self.post_obj.in_reply_to:
try:
parent = Post.by_object_uri(self.post_obj.in_reply_to, fetch=True)
except Post.DoesNotExist:
pass
return {
"identity": self.identity,
"post": self.post_obj,
"interactions": PostInteraction.get_post_interactions(
[self.post_obj],
self.request.identity,
),
"link_original": True,
"parent": parent,
"replies": Post.objects.filter(
models.Q(
visibility__in=[
Post.Visibilities.public,
Post.Visibilities.local_only,
Post.Visibilities.unlisted,
]
)
| models.Q(
visibility=Post.Visibilities.followers,
author__inbound_follows__source=self.identity,
)
| models.Q(
visibility=Post.Visibilities.mentioned,
mentions=self.identity,
),
in_reply_to=self.post_obj.object_uri,
)
.distinct()
.order_by("published", "created"),
}
def serve_object(self):
# If this not a local post, redirect to its canonical URI
if not self.post_obj.local:
return redirect(self.post_obj.object_uri)
return JsonResponse(
canonicalise(self.post_obj.to_ap(), include_security=True),
content_type="application/activity+json",
)
@method_decorator(identity_required, name="dispatch")
class Like(View):
"""
Adds/removes a like from the current identity to the post
"""
undo = False
def post(self, request, handle, post_id):
identity = by_handle_or_404(self.request, handle, local=False)
post = get_object_or_404(
identity.posts.prefetch_related("attachments"), pk=post_id
)
if self.undo:
# Undo any likes on the post
for interaction in PostInteraction.objects.filter(
type=PostInteraction.Types.like,
identity=request.identity,
post=post,
):
interaction.transition_perform(PostInteractionStates.undone)
else:
# Make a like on this post if we didn't already
PostInteraction.objects.get_or_create(
type=PostInteraction.Types.like,
identity=request.identity,
post=post,
)
# Return either a redirect or a HTMX snippet
if request.htmx:
return render(
request,
"activities/_like.html",
{
"post": post,
"interactions": {"like": set() if self.undo else {post.pk}},
},
)
return redirect(post.urls.view)
@method_decorator(identity_required, name="dispatch")
class Boost(View):
"""
Adds/removes a boost from the current identity to the post
"""
undo = False
def post(self, request, handle, post_id):
identity = by_handle_or_404(self.request, handle, local=False)
post = get_object_or_404(identity.posts, pk=post_id)
if self.undo:
# Undo any boosts on the post
for interaction in PostInteraction.objects.filter(
type=PostInteraction.Types.boost,
identity=request.identity,
post=post,
):
interaction.transition_perform(PostInteractionStates.undone)
else:
# Make a boost on this post if we didn't already
PostInteraction.objects.get_or_create(
type=PostInteraction.Types.boost,
identity=request.identity,
post=post,
)
# Return either a redirect or a HTMX snippet
if request.htmx:
return render(
request,
"activities/_boost.html",
{
"post": post,
"interactions": {"boost": set() if self.undo else {post.pk}},
},
)
return redirect(post.urls.view)
@method_decorator(identity_required, name="dispatch")
class Delete(TemplateView):
"""
Deletes a post
"""
template_name = "activities/post_delete.html"
def dispatch(self, request, handle, post_id):
# Make sure the request identity owns the post!
if handle != request.identity.handle:
raise PermissionDenied("Post author is not requestor")
self.identity = by_handle_or_404(self.request, handle, local=False)
self.post_obj = get_object_or_404(self.identity.posts, pk=post_id)
return super().dispatch(request)
def get_context_data(self):
return {"post": self.post_obj}
def post(self, request):
self.post_obj.transition_perform(PostStates.deleted)
return redirect("/")
|
