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from django import forms
from django.conf import settings
from django.core.exceptions import PermissionDenied
from django.shortcuts import get_object_or_404, redirect, render
from django.utils.decorators import method_decorator
from django.views.generic import FormView
from activities.models import (
Post,
PostAttachment,
PostAttachmentStates,
PostStates,
TimelineEvent,
)
from core.files import blurhash_image, resize_image
from core.html import html_to_plaintext
from core.models import Config
from users.decorators import identity_required
@method_decorator(identity_required, name="dispatch")
class Compose(FormView):
template_name = "activities/compose.html"
class form_class(forms.Form):
text = forms.CharField(
widget=forms.Textarea(
attrs={
"autofocus": "autofocus",
"maxlength": Config.lazy_system_value("post_length"),
"placeholder": "What's on your mind?",
},
)
)
visibility = forms.ChoiceField(
choices=[
(Post.Visibilities.public, "Public"),
(Post.Visibilities.local_only, "Local Only"),
(Post.Visibilities.unlisted, "Unlisted"),
(Post.Visibilities.followers, "Followers & Mentioned Only"),
(Post.Visibilities.mentioned, "Mentioned Only"),
],
)
content_warning = forms.CharField(
required=False,
label=Config.lazy_system_value("content_warning_text"),
widget=forms.TextInput(
attrs={
"placeholder": Config.lazy_system_value("content_warning_text"),
},
),
help_text="Optional - Post will be hidden behind this text until clicked",
)
reply_to = forms.CharField(widget=forms.HiddenInput(), required=False)
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.fields["text"].widget.attrs[
"_"
] = f"""
on load or input
set characters to my.value.trim().length
put {Config.system.post_length} - characters into #character-counter
if characters > {Config.system.post_length} then
set #character-counter's style.color to 'var(--color-text-error)'
add [@disabled=] to #post-button
else
set #character-counter's style.color to ''
remove @disabled from #post-button
end
"""
def clean_text(self):
text = self.cleaned_data.get("text")
if not text:
return text
length = len(text)
if length > Config.system.post_length:
raise forms.ValidationError(
f"Maximum post length is {Config.system.post_length} characters (you have {length})"
)
return text
def get_initial(self):
initial = super().get_initial()
if self.post_obj:
initial.update(
{
"reply_to": self.reply_to.pk if self.reply_to else "",
"visibility": self.post_obj.visibility,
"text": html_to_plaintext(self.post_obj.content),
"content_warning": self.post_obj.summary,
}
)
else:
initial[
"visibility"
] = self.request.identity.config_identity.default_post_visibility
if self.reply_to:
initial["reply_to"] = self.reply_to.pk
if self.reply_to.visibility == Post.Visibilities.public:
initial["visibility"] = Post.Visibilities.unlisted
else:
initial["visibility"] = self.reply_to.visibility
# Build a set of mentions for the content to start as
mentioned = {self.reply_to.author}
mentioned.update(self.reply_to.mentions.all())
mentioned.discard(self.request.identity)
initial["text"] = "".join(
f"@{identity.handle} " for identity in mentioned
)
return initial
def form_valid(self, form):
# Gather any attachment objects now, they're not in the form proper
attachments = []
if "attachment" in self.request.POST:
attachments = PostAttachment.objects.filter(
pk__in=self.request.POST.getlist("attachment", [])
)
# Dispatch based on edit or not
if self.post_obj:
self.post_obj.edit_local(
content=form.cleaned_data["text"],
summary=form.cleaned_data.get("content_warning"),
visibility=form.cleaned_data["visibility"],
attachments=attachments,
)
self.post_obj.transition_perform(PostStates.edited)
else:
post = Post.create_local(
author=self.request.identity,
content=form.cleaned_data["text"],
summary=form.cleaned_data.get("content_warning"),
visibility=form.cleaned_data["visibility"],
reply_to=self.reply_to,
attachments=attachments,
)
# Add their own timeline event for immediate visibility
TimelineEvent.add_post(self.request.identity, post)
return redirect("/")
def dispatch(self, request, handle=None, post_id=None, *args, **kwargs):
self.post_obj = None
if handle and post_id:
# Make sure the request identity owns the post!
if handle != request.identity.handle:
raise PermissionDenied("Post author is not requestor")
self.post_obj = get_object_or_404(request.identity.posts, pk=post_id)
# Grab the reply-to post info now
self.reply_to = None
reply_to_id = request.POST.get("reply_to") or request.GET.get("reply_to")
if reply_to_id:
try:
self.reply_to = Post.objects.get(pk=reply_to_id)
except Post.DoesNotExist:
pass
# Keep going with normal rendering
return super().dispatch(request, *args, **kwargs)
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context["reply_to"] = self.reply_to
if self.post_obj:
context["post"] = self.post_obj
return context
@method_decorator(identity_required, name="dispatch")
class ImageUpload(FormView):
"""
Handles image upload - returns a new input type hidden to embed in
the main form that references an orphaned PostAttachment
"""
template_name = "activities/_image_upload.html"
class form_class(forms.Form):
image = forms.ImageField()
description = forms.CharField(required=False)
def clean_image(self):
value = self.cleaned_data["image"]
max_mb = settings.SETUP.MEDIA_MAX_IMAGE_FILESIZE_MB
max_bytes = max_mb * 1024 * 1024
if value.size > max_bytes:
# Erase the file from our data to stop trying to show it again
self.files = {}
raise forms.ValidationError(f"File must be {max_mb}MB or less")
return value
def form_invalid(self, form):
return super().form_invalid(form)
def form_valid(self, form):
# Make a PostAttachment
main_file = resize_image(
form.cleaned_data["image"],
size=(2000, 2000),
cover=False,
)
thumbnail_file = resize_image(
form.cleaned_data["image"],
size=(400, 225),
cover=True,
)
attachment = PostAttachment.objects.create(
blurhash=blurhash_image(thumbnail_file),
mimetype="image/webp",
width=main_file.image.width,
height=main_file.image.height,
name=form.cleaned_data.get("description"),
state=PostAttachmentStates.fetched,
)
attachment.file.save(
main_file.name,
main_file,
)
attachment.thumbnail.save(
thumbnail_file.name,
thumbnail_file,
)
attachment.save()
# Return the response, with a hidden input plus a note
return render(
self.request, "activities/_image_uploaded.html", {"attachment": attachment}
)
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