Plume/plume-models/src/reshares.rs

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Rust
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use activitypub::activity::{Announce, Undo};
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use chrono::NaiveDateTime;
use diesel::{self, ExpressionMethods, QueryDsl, RunQueryDsl};
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use notifications::*;
use plume_common::activity_pub::{
inbox::{Deletable, FromActivity, Notify},
Id, IntoId, PUBLIC_VISIBILTY,
};
use posts::Post;
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use schema::reshares;
use users::User;
use {Connection, Error, Result};
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#[derive(Clone, Serialize, Deserialize, Queryable, Identifiable)]
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pub struct Reshare {
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pub id: i32,
pub user_id: i32,
pub post_id: i32,
pub ap_url: String,
pub creation_date: NaiveDateTime,
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}
#[derive(Insertable)]
#[table_name = "reshares"]
pub struct NewReshare {
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pub user_id: i32,
pub post_id: i32,
pub ap_url: String,
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}
impl Reshare {
insert!(reshares, NewReshare);
get!(reshares);
find_by!(reshares, find_by_ap_url, ap_url as &str);
find_by!(
reshares,
find_by_user_on_post,
user_id as i32,
post_id as i32
);
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pub fn get_recents_for_author(conn: &Connection, user: &User, limit: i64) -> Result<Vec<Reshare>> {
reshares::table
.filter(reshares::user_id.eq(user.id))
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.order(reshares::creation_date.desc())
.limit(limit)
.load::<Reshare>(conn)
.map_err(Error::from)
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}
pub fn get_post(&self, conn: &Connection) -> Result<Post> {
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Post::get(conn, self.post_id)
}
pub fn get_user(&self, conn: &Connection) -> Result<User> {
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User::get(conn, self.user_id)
}
pub fn to_activity(&self, conn: &Connection) -> Result<Announce> {
let mut act = Announce::default();
act.announce_props
.set_actor_link(User::get(conn, self.user_id)?.into_id())?;
act.announce_props
.set_object_link(Post::get(conn, self.post_id)?.into_id())?;
act.object_props
.set_id_string(self.ap_url.clone())?;
act.object_props
.set_to_link(Id::new(PUBLIC_VISIBILTY.to_string()))?;
act.object_props
.set_cc_link_vec::<Id>(vec![])?;
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Ok(act)
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}
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}
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impl FromActivity<Announce, Connection> for Reshare {
type Error = Error;
fn from_activity(conn: &Connection, announce: Announce, _actor: Id) -> Result<Reshare> {
let user = User::from_url(
conn,
announce
.announce_props
.actor_link::<Id>()?
.as_ref(),
)?;
let post = Post::find_by_ap_url(
conn,
announce
.announce_props
.object_link::<Id>()?
.as_ref(),
)?;
let reshare = Reshare::insert(
conn,
NewReshare {
post_id: post.id,
user_id: user.id,
ap_url: announce
.object_props
.id_string()
.unwrap_or_default(),
},
)?;
reshare.notify(conn)?;
Ok(reshare)
}
}
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impl Notify<Connection> for Reshare {
type Error = Error;
fn notify(&self, conn: &Connection) -> Result<()> {
let post = self.get_post(conn)?;
for author in post.get_authors(conn)? {
Notification::insert(
conn,
NewNotification {
kind: notification_kind::RESHARE.to_string(),
object_id: self.id,
user_id: author.id,
},
)?;
}
Ok(())
}
}
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impl Deletable<Connection, Undo> for Reshare {
type Error = Error;
fn delete(&self, conn: &Connection) -> Result<Undo> {
diesel::delete(self)
.execute(conn)?;
// delete associated notification if any
if let Ok(notif) = Notification::find(conn, notification_kind::RESHARE, self.id) {
diesel::delete(&notif)
.execute(conn)?;
}
let mut act = Undo::default();
act.undo_props
.set_actor_link(User::get(conn, self.user_id)?.into_id())?;
act.undo_props
.set_object_object(self.to_activity(conn)?)?;
act.object_props
.set_id_string(format!("{}#delete", self.ap_url))?;
act.object_props
.set_to_link(Id::new(PUBLIC_VISIBILTY.to_string()))?;
act.object_props
.set_cc_link_vec::<Id>(vec![])?;
Ok(act)
}
fn delete_id(id: &str, actor_id: &str, conn: &Connection) -> Result<Undo> {
let reshare = Reshare::find_by_ap_url(conn, id)?;
let actor = User::find_by_ap_url(conn, actor_id)?;
if actor.id == reshare.user_id {
reshare.delete(conn)
} else {
Err(Error::Unauthorized)
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}
}
}
impl NewReshare {
pub fn new(p: &Post, u: &User) -> Self {
let ap_url = format!("{}/reshare/{}", u.ap_url, p.ap_url);
NewReshare {
post_id: p.id,
user_id: u.id,
ap_url
}
}
}