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use super::*;
#[derive(Deserialize)]
pub struct PostQuery {
post_id: String,
}
/// Return the post json over HTTP.
pub async fn get_apub_post(
info: Path<PostQuery>,
db: DbPoolParam,
) -> Result<HttpResponse<Body>, Error> {
let id = info.post_id.parse::<i32>()?;
let post = Post::read(&&db.get()?, id)?;
if !post.deleted {
Ok(create_apub_response(&post.to_apub(&db.get().unwrap())?))
} else {
Ok(create_apub_tombstone_response(&post.to_tombstone()?))
}
}
impl ToApub for Post {
type Response = Page;
// Turn a Lemmy post into an ActivityPub page that can be sent out over the network.
fn to_apub(&self, conn: &PgConnection) -> Result<Page, Error> {
let mut page = Page::default();
let oprops: &mut ObjectProperties = page.as_mut();
let creator = User_::read(conn, self.creator_id)?;
let community = Community::read(conn, self.community_id)?;
oprops
// Not needed when the Post is embedded in a collection (like for community outbox)
.set_context_xsd_any_uri(context())?
.set_id(self.ap_id.to_owned())?
// Use summary field to be consistent with mastodon content warning.
// https://mastodon.xyz/@Louisa/103987265222901387.json
.set_summary_xsd_string(self.name.to_owned())?
.set_published(convert_datetime(self.published))?
.set_to_xsd_any_uri(community.actor_id)?
.set_attributed_to_xsd_any_uri(creator.actor_id)?;
if let Some(body) = &self.body {
oprops.set_content_xsd_string(body.to_owned())?;
}
// TODO: hacky code because we get self.url == Some("")
// https://github.com/dessalines/lemmy/issues/602
let url = self.url.as_ref().filter(|u| !u.is_empty());
if let Some(u) = url {
oprops.set_url_xsd_any_uri(u.to_owned())?;
}
if let Some(u) = self.updated {
oprops.set_updated(convert_datetime(u))?;
}
Ok(page)
}
fn to_tombstone(&self) -> Result<Tombstone, Error> {
create_tombstone(
self.deleted,
&self.ap_id,
self.updated,
PageType.to_string(),
)
}
}
impl FromApub for PostForm {
type ApubType = Page;
/// Parse an ActivityPub page received from another instance into a Lemmy post.
fn from_apub(page: &Page, conn: &PgConnection) -> Result<PostForm, Error> {
let oprops = &page.object_props;
let creator_actor_id = &oprops.get_attributed_to_xsd_any_uri().unwrap().to_string();
let creator = get_or_fetch_and_upsert_remote_user(&creator_actor_id, &conn)?;
let community_actor_id = &oprops.get_to_xsd_any_uri().unwrap().to_string();
let community = get_or_fetch_and_upsert_remote_community(&community_actor_id, &conn)?;
Ok(PostForm {
name: oprops.get_summary_xsd_string().unwrap().to_string(),
url: oprops.get_url_xsd_any_uri().map(|u| u.to_string()),
body: oprops.get_content_xsd_string().map(|c| c.to_string()),
creator_id: creator.id,
community_id: community.id,
removed: None, // -> Delete activity / tombstone
locked: None, // -> commentsEnabled
published: oprops
.get_published()
.map(|u| u.as_ref().to_owned().naive_local()),
updated: oprops
.get_updated()
.map(|u| u.as_ref().to_owned().naive_local()),
deleted: None, // -> Delete activity / tombstone
nsfw: false, // -> sensitive
stickied: None, // -> put it in "featured" collection of the community
embed_title: None, // -> attachment?
embed_description: None,
embed_html: None,
thumbnail_url: None,
ap_id: oprops.get_id().unwrap().to_string(),
local: false,
})
}
}
impl ApubObjectType for Post {
/// Send out information about a newly created post, to the followers of the community.
fn send_create(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
let page = self.to_apub(conn)?;
let community = Community::read(conn, self.community_id)?;
let id = format!("{}/create/{}", self.ap_id, uuid::Uuid::new_v4());
let mut create = Create::new();
populate_object_props(
&mut create.object_props,
&community.get_followers_url(),
&id,
)?;
create
.create_props
.set_actor_xsd_any_uri(creator.actor_id.to_owned())?
.set_object_base_box(page)?;
// Insert the sent activity into the activity table
let activity_form = activity::ActivityForm {
user_id: creator.id,
data: serde_json::to_value(&create)?,
local: true,
updated: None,
};
activity::Activity::create(&conn, &activity_form)?;
send_activity(
&create,
&creator.private_key.as_ref().unwrap(),
&creator.actor_id,
community.get_follower_inboxes(&conn)?,
)?;
Ok(())
}
/// Send out information about an edited post, to the followers of the community.
fn send_update(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
let page = self.to_apub(conn)?;
let community = Community::read(conn, self.community_id)?;
let id = format!("{}/update/{}", self.ap_id, uuid::Uuid::new_v4());
let mut update = Update::new();
populate_object_props(
&mut update.object_props,
&community.get_followers_url(),
&id,
)?;
update
.update_props
.set_actor_xsd_any_uri(creator.actor_id.to_owned())?
.set_object_base_box(page)?;
// Insert the sent activity into the activity table
let activity_form = activity::ActivityForm {
user_id: creator.id,
data: serde_json::to_value(&update)?,
local: true,
updated: None,
};
activity::Activity::create(&conn, &activity_form)?;
send_activity(
&update,
&creator.private_key.as_ref().unwrap(),
&creator.actor_id,
community.get_follower_inboxes(&conn)?,
)?;
Ok(())
}
fn send_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
let page = self.to_apub(conn)?;
let community = Community::read(conn, self.community_id)?;
let id = format!("{}/delete/{}", self.ap_id, uuid::Uuid::new_v4());
let mut delete = Delete::default();
populate_object_props(
&mut delete.object_props,
&community.get_followers_url(),
&id,
)?;
delete
.delete_props
.set_actor_xsd_any_uri(creator.actor_id.to_owned())?
.set_object_base_box(page)?;
// Insert the sent activity into the activity table
let activity_form = activity::ActivityForm {
user_id: self.creator_id,
data: serde_json::to_value(&delete)?,
local: true,
updated: None,
};
activity::Activity::create(&conn, &activity_form)?;
let community = Community::read(conn, self.community_id)?;
send_activity(
&delete,
&creator.private_key.as_ref().unwrap(),
&creator.actor_id,
community.get_follower_inboxes(&conn)?,
)?;
Ok(())
}
fn send_undo_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
let page = self.to_apub(conn)?;
let community = Community::read(conn, self.community_id)?;
let id = format!("{}/delete/{}", self.ap_id, uuid::Uuid::new_v4());
let mut delete = Delete::default();
populate_object_props(
&mut delete.object_props,
&community.get_followers_url(),
&id,
)?;
delete
.delete_props
.set_actor_xsd_any_uri(creator.actor_id.to_owned())?
.set_object_base_box(page)?;
// TODO
// Undo that fake activity
let undo_id = format!("{}/undo/delete/{}", self.ap_id, uuid::Uuid::new_v4());
let mut undo = Undo::default();
populate_object_props(
&mut undo.object_props,
&community.get_followers_url(),
&undo_id,
)?;
undo
.undo_props
.set_actor_xsd_any_uri(creator.actor_id.to_owned())?
.set_object_base_box(delete)?;
// Insert the sent activity into the activity table
let activity_form = activity::ActivityForm {
user_id: self.creator_id,
data: serde_json::to_value(&undo)?,
local: true,
updated: None,
};
activity::Activity::create(&conn, &activity_form)?;
let community = Community::read(conn, self.community_id)?;
send_activity(
&undo,
&creator.private_key.as_ref().unwrap(),
&creator.actor_id,
community.get_follower_inboxes(&conn)?,
)?;
Ok(())
}
fn send_remove(&self, mod_: &User_, conn: &PgConnection) -> Result<(), Error> {
let page = self.to_apub(conn)?;
let community = Community::read(conn, self.community_id)?;
let id = format!("{}/remove/{}", self.ap_id, uuid::Uuid::new_v4());
let mut remove = Remove::default();
populate_object_props(
&mut remove.object_props,
&community.get_followers_url(),
&id,
)?;
remove
.remove_props
.set_actor_xsd_any_uri(mod_.actor_id.to_owned())?
.set_object_base_box(page)?;
// Insert the sent activity into the activity table
let activity_form = activity::ActivityForm {
user_id: mod_.id,
data: serde_json::to_value(&remove)?,
local: true,
updated: None,
};
activity::Activity::create(&conn, &activity_form)?;
let community = Community::read(conn, self.community_id)?;
send_activity(
&remove,
&mod_.private_key.as_ref().unwrap(),
&mod_.actor_id,
community.get_follower_inboxes(&conn)?,
)?;
Ok(())
}
fn send_undo_remove(&self, mod_: &User_, conn: &PgConnection) -> Result<(), Error> {
let page = self.to_apub(conn)?;
let community = Community::read(conn, self.community_id)?;
let id = format!("{}/remove/{}", self.ap_id, uuid::Uuid::new_v4());
let mut remove = Remove::default();
populate_object_props(
&mut remove.object_props,
&community.get_followers_url(),
&id,
)?;
remove
.remove_props
.set_actor_xsd_any_uri(mod_.actor_id.to_owned())?
.set_object_base_box(page)?;
// Undo that fake activity
let undo_id = format!("{}/undo/remove/{}", self.ap_id, uuid::Uuid::new_v4());
let mut undo = Undo::default();
populate_object_props(
&mut undo.object_props,
&community.get_followers_url(),
&undo_id,
)?;
undo
.undo_props
.set_actor_xsd_any_uri(mod_.actor_id.to_owned())?
.set_object_base_box(remove)?;
// Insert the sent activity into the activity table
let activity_form = activity::ActivityForm {
user_id: mod_.id,
data: serde_json::to_value(&undo)?,
local: true,
updated: None,
};
activity::Activity::create(&conn, &activity_form)?;
let community = Community::read(conn, self.community_id)?;
send_activity(
&undo,
&mod_.private_key.as_ref().unwrap(),
&mod_.actor_id,
community.get_follower_inboxes(&conn)?,
)?;
Ok(())
}
}
impl ApubLikeableType for Post {
fn send_like(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
let page = self.to_apub(conn)?;
let community = Community::read(conn, self.community_id)?;
let id = format!("{}/like/{}", self.ap_id, uuid::Uuid::new_v4());
let mut like = Like::new();
populate_object_props(&mut like.object_props, &community.get_followers_url(), &id)?;
like
.like_props
.set_actor_xsd_any_uri(creator.actor_id.to_owned())?
.set_object_base_box(page)?;
// Insert the sent activity into the activity table
let activity_form = activity::ActivityForm {
user_id: creator.id,
data: serde_json::to_value(&like)?,
local: true,
updated: None,
};
activity::Activity::create(&conn, &activity_form)?;
send_activity(
&like,
&creator.private_key.as_ref().unwrap(),
&creator.actor_id,
community.get_follower_inboxes(&conn)?,
)?;
Ok(())
}
fn send_dislike(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
let page = self.to_apub(conn)?;
let community = Community::read(conn, self.community_id)?;
let id = format!("{}/dislike/{}", self.ap_id, uuid::Uuid::new_v4());
let mut dislike = Dislike::new();
populate_object_props(
&mut dislike.object_props,
&community.get_followers_url(),
&id,
)?;
dislike
.dislike_props
.set_actor_xsd_any_uri(creator.actor_id.to_owned())?
.set_object_base_box(page)?;
// Insert the sent activity into the activity table
let activity_form = activity::ActivityForm {
user_id: creator.id,
data: serde_json::to_value(&dislike)?,
local: true,
updated: None,
};
activity::Activity::create(&conn, &activity_form)?;
send_activity(
&dislike,
&creator.private_key.as_ref().unwrap(),
&creator.actor_id,
community.get_follower_inboxes(&conn)?,
)?;
Ok(())
}
fn send_undo_like(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
let page = self.to_apub(conn)?;
let community = Community::read(conn, self.community_id)?;
let id = format!("{}/like/{}", self.ap_id, uuid::Uuid::new_v4());
let mut like = Like::new();
populate_object_props(&mut like.object_props, &community.get_followers_url(), &id)?;
like
.like_props
.set_actor_xsd_any_uri(creator.actor_id.to_owned())?
.set_object_base_box(page)?;
// TODO
// Undo that fake activity
let undo_id = format!("{}/undo/like/{}", self.ap_id, uuid::Uuid::new_v4());
let mut undo = Undo::default();
populate_object_props(
&mut undo.object_props,
&community.get_followers_url(),
&undo_id,
)?;
undo
.undo_props
.set_actor_xsd_any_uri(creator.actor_id.to_owned())?
.set_object_base_box(like)?;
// Insert the sent activity into the activity table
let activity_form = activity::ActivityForm {
user_id: creator.id,
data: serde_json::to_value(&undo)?,
local: true,
updated: None,
};
activity::Activity::create(&conn, &activity_form)?;
send_activity(
&undo,
&creator.private_key.as_ref().unwrap(),
&creator.actor_id,
community.get_follower_inboxes(&conn)?,
)?;
Ok(())
}
}