126 lines
3.6 KiB
Python
126 lines
3.6 KiB
Python
from functools import partial
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from django.db import models
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from core.uploads import upload_namer
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from core.uris import AutoAbsoluteUrl, RelativeAbsoluteUrl
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from stator.models import State, StateField, StateGraph, StatorModel
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class PostAttachmentStates(StateGraph):
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new = State(try_interval=30000)
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fetched = State()
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new.transitions_to(fetched)
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@classmethod
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async def handle_new(cls, instance):
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# TODO: Fetch images to our own media storage
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pass
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class PostAttachment(StatorModel):
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"""
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An attachment to a Post. Could be an image, a video, etc.
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"""
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post = models.ForeignKey(
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"activities.post",
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on_delete=models.CASCADE,
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related_name="attachments",
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blank=True,
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null=True,
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)
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state = StateField(graph=PostAttachmentStates)
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mimetype = models.CharField(max_length=200)
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# Files may not be populated if it's remote and not cached on our side yet
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file = models.FileField(
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upload_to=partial(upload_namer, "attachments"),
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null=True,
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blank=True,
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)
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thumbnail = models.ImageField(
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upload_to=partial(upload_namer, "attachment_thumbnails"),
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null=True,
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blank=True,
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)
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remote_url = models.CharField(max_length=500, null=True, blank=True)
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# This is the description for images, at least
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name = models.TextField(null=True, blank=True)
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width = models.IntegerField(null=True, blank=True)
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height = models.IntegerField(null=True, blank=True)
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focal_x = models.IntegerField(null=True, blank=True)
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focal_y = models.IntegerField(null=True, blank=True)
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blurhash = models.TextField(null=True, blank=True)
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created = models.DateTimeField(auto_now_add=True)
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updated = models.DateTimeField(auto_now=True)
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def is_image(self):
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return self.mimetype in [
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"image/apng",
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"image/avif",
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"image/gif",
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"image/jpeg",
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"image/png",
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"image/webp",
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]
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def thumbnail_url(self) -> RelativeAbsoluteUrl:
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if self.thumbnail:
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return RelativeAbsoluteUrl(self.thumbnail.url)
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elif self.file:
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return RelativeAbsoluteUrl(self.file.url)
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else:
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return AutoAbsoluteUrl(f"/proxy/post_attachment/{self.pk}/")
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def full_url(self):
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if self.file:
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return RelativeAbsoluteUrl(self.file.url)
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else:
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return AutoAbsoluteUrl(f"/proxy/post_attachment/{self.pk}/")
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### ActivityPub ###
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def to_ap(self):
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return {
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"url": self.file.url,
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"name": self.name,
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"type": "Document",
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"width": self.width,
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"height": self.height,
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"mediaType": self.mimetype,
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"toot:focalPoint": [0, 0],
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}
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### Mastodon Client API ###
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def to_mastodon_json(self):
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return {
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"id": self.pk,
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"type": "image" if self.is_image() else "unknown",
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"url": self.full_url().absolute,
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"preview_url": self.thumbnail_url().absolute,
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"remote_url": None,
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"meta": {
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"original": {
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"width": self.width,
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"height": self.height,
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"size": f"{self.width}x{self.height}",
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"aspect": self.width / self.height,
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},
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"focus": {
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"x": self.focal_x or 0,
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"y": self.focal_y or 0,
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},
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},
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"description": self.name,
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"blurhash": self.blurhash,
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}
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