lemmy/lemmy_apub/src/objects/mod.rs

131 lines
3.6 KiB
Rust

use crate::check_is_apub_id_valid;
use activitystreams::{
base::{AsBase, BaseExt, ExtendsExt},
markers::Base,
mime::{FromStrError, Mime},
object::{ApObjectExt, Object, ObjectExt, Tombstone, TombstoneExt},
};
use anyhow::{anyhow, Context};
use chrono::NaiveDateTime;
use lemmy_utils::{location_info, utils::convert_datetime, LemmyError};
use url::Url;
pub(crate) mod comment;
pub(crate) mod community;
pub(crate) mod post;
pub(crate) mod private_message;
pub(crate) mod user;
/// Updated is actually the deletion time
fn create_tombstone<T>(
deleted: bool,
object_id: &str,
updated: Option<NaiveDateTime>,
former_type: T,
) -> Result<Tombstone, LemmyError>
where
T: ToString,
{
if deleted {
if let Some(updated) = updated {
let mut tombstone = Tombstone::new();
tombstone.set_id(object_id.parse()?);
tombstone.set_former_type(former_type.to_string());
tombstone.set_deleted(convert_datetime(updated));
Ok(tombstone)
} else {
Err(anyhow!("Cant convert to tombstone because updated time was None.").into())
}
} else {
Err(anyhow!("Cant convert object to tombstone if it wasnt deleted").into())
}
}
pub(in crate::objects) fn check_object_domain<T, Kind>(
apub: &T,
expected_domain: Option<Url>,
) -> Result<String, LemmyError>
where
T: Base + AsBase<Kind>,
{
let actor_id = if let Some(url) = expected_domain {
check_is_apub_id_valid(&url)?;
let domain = url.domain().context(location_info!())?;
apub.id(domain)?.context(location_info!())?
} else {
let actor_id = apub.id_unchecked().context(location_info!())?;
check_is_apub_id_valid(&actor_id)?;
actor_id
};
Ok(actor_id.to_string())
}
pub(in crate::objects) fn set_content_and_source<T, Kind1, Kind2>(
object: &mut T,
markdown_text: &str,
) -> Result<(), LemmyError>
where
T: ApObjectExt<Kind1> + ObjectExt<Kind2> + AsBase<Kind2>,
{
let mut source = Object::<()>::new_none_type();
source
.set_content(markdown_text)
.set_media_type(mime_markdown()?);
object.set_source(source.into_any_base()?);
// set `content` to markdown for compatibility with older Lemmy versions
// TODO: change this to HTML in a while
object.set_content(markdown_text);
object.set_media_type(mime_markdown()?);
//object.set_content(markdown_to_html(markdown_text));
Ok(())
}
pub(in crate::objects) fn get_source_markdown_value<T, Kind1, Kind2>(
object: &T,
) -> Result<Option<String>, LemmyError>
where
T: ApObjectExt<Kind1> + ObjectExt<Kind2> + AsBase<Kind2>,
{
let content = object
.content()
.map(|s| s.as_single_xsd_string())
.flatten()
.map(|s| s.to_string());
if content.is_some() {
let source = object.source();
// updated lemmy version, read markdown from `source.content`
if let Some(source) = source {
let source = Object::<()>::from_any_base(source.to_owned())?.context(location_info!())?;
check_is_markdown(source.media_type())?;
let source_content = source
.content()
.map(|s| s.as_single_xsd_string())
.flatten()
.context(location_info!())?
.to_string();
return Ok(Some(source_content));
}
// older lemmy version, read markdown from `content`
// TODO: remove this after a while
else {
return Ok(content);
}
}
Ok(None)
}
pub(in crate::objects) fn mime_markdown() -> Result<Mime, FromStrError> {
"text/markdown".parse()
}
pub(in crate::objects) fn check_is_markdown(mime: Option<&Mime>) -> Result<(), LemmyError> {
let mime = mime.context(location_info!())?;
if !mime.eq(&mime_markdown()?) {
Err(LemmyError::from(anyhow!(
"Lemmy only supports markdown content"
)))
} else {
Ok(())
}
}