Plume/plume-models/src/likes.rs

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Rust
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use activitypub::activity;
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,
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};
use posts::Post;
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use schema::likes;
use users::User;
use {Connection, Error, Result};
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#[derive(Clone, Queryable, Identifiable)]
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pub struct Like {
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pub id: i32,
pub user_id: i32,
pub post_id: i32,
pub creation_date: NaiveDateTime,
pub ap_url: String,
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}
#[derive(Default, Insertable)]
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#[table_name = "likes"]
pub struct NewLike {
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pub user_id: i32,
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pub post_id: i32,
pub ap_url: String,
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}
impl Like {
insert!(likes, NewLike);
get!(likes);
find_by!(likes, find_by_ap_url, ap_url as &str);
find_by!(likes, find_by_user_on_post, user_id as i32, post_id as i32);
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pub fn to_activity(&self, conn: &Connection) -> Result<activity::Like> {
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let mut act = activity::Like::default();
act.like_props
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.set_actor_link(User::get(conn, self.user_id)?.into_id())?;
act.like_props
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.set_object_link(Post::get(conn, self.post_id)?.into_id())?;
act.object_props
.set_to_link(Id::new(PUBLIC_VISIBILTY.to_string()))?;
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act.object_props.set_cc_link_vec::<Id>(vec![])?;
act.object_props.set_id_string(self.ap_url.clone())?;
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Ok(act)
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}
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}
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impl FromActivity<activity::Like, Connection> for Like {
type Error = Error;
fn from_activity(conn: &Connection, like: activity::Like, _actor: Id) -> Result<Like> {
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let liker = User::from_url(conn, like.like_props.actor.as_str()?)?;
let post = Post::find_by_ap_url(conn, like.like_props.object.as_str()?)?;
let res = Like::insert(
conn,
NewLike {
post_id: post.id,
user_id: liker.id,
ap_url: like.object_props.id_string()?,
},
)?;
res.notify(conn)?;
Ok(res)
}
}
impl Notify<Connection> for Like {
type Error = Error;
fn notify(&self, conn: &Connection) -> Result<()> {
let post = Post::get(conn, self.post_id)?;
for author in post.get_authors(conn)? {
Notification::insert(
conn,
NewNotification {
kind: notification_kind::LIKE.to_string(),
object_id: self.id,
user_id: author.id,
},
)?;
}
Ok(())
}
}
impl Deletable<Connection, activity::Undo> for Like {
type Error = Error;
fn delete(&self, conn: &Connection) -> Result<activity::Undo> {
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diesel::delete(self).execute(conn)?;
// delete associated notification if any
if let Ok(notif) = Notification::find(conn, notification_kind::LIKE, self.id) {
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diesel::delete(&notif).execute(conn)?;
}
let mut act = activity::Undo::default();
act.undo_props
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.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()))?;
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act.object_props.set_cc_link_vec::<Id>(vec![])?;
Ok(act)
}
fn delete_id(id: &str, actor_id: &str, conn: &Connection) -> Result<activity::Undo> {
let like = Like::find_by_ap_url(conn, id)?;
let user = User::find_by_ap_url(conn, actor_id)?;
if user.id == like.user_id {
like.delete(conn)
} else {
Err(Error::Unauthorized)
}
}
}
impl NewLike {
pub fn new(p: &Post, u: &User) -> Self {
let ap_url = format!("{}/like/{}", u.ap_url, p.ap_url);
NewLike {
post_id: p.id,
user_id: u.id,
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ap_url,
}
}
}