Plume/plume-models/src/notifications.rs

109 lines
4.0 KiB
Rust

use chrono::NaiveDateTime;
use diesel::{self, PgConnection, RunQueryDsl, QueryDsl, ExpressionMethods};
use serde_json;
use comments::Comment;
use follows::Follow;
use likes::Like;
use mentions::Mention;
use posts::Post;
use reshares::Reshare;
use users::User;
use schema::notifications;
pub mod notification_kind {
pub const COMMENT: &'static str = "COMMENT";
pub const FOLLOW: &'static str = "FOLLOW";
pub const LIKE: &'static str = "LIKE";
pub const MENTION: &'static str = "MENTION";
pub const RESHARE: &'static str = "RESHARE";
}
#[derive(Queryable, Identifiable, Serialize)]
pub struct Notification {
pub id: i32,
pub user_id: i32,
pub creation_date: NaiveDateTime,
pub kind: String,
pub object_id: i32
}
#[derive(Insertable)]
#[table_name = "notifications"]
pub struct NewNotification {
pub user_id: i32,
pub kind: String,
pub object_id: i32
}
impl Notification {
insert!(notifications, NewNotification);
get!(notifications);
pub fn find_for_user(conn: &PgConnection, user: &User) -> Vec<Notification> {
notifications::table.filter(notifications::user_id.eq(user.id))
.order_by(notifications::creation_date.desc())
.load::<Notification>(conn)
.expect("Couldn't load user notifications")
}
pub fn page_for_user(conn: &PgConnection, user: &User, (min, max): (i32, i32)) -> Vec<Notification> {
notifications::table.filter(notifications::user_id.eq(user.id))
.order_by(notifications::creation_date.desc())
.offset(min.into())
.limit((max - min).into())
.load::<Notification>(conn)
.expect("Couldn't load user notifications page")
}
pub fn find<S: Into<String>>(conn: &PgConnection, kind: S, obj: i32) -> Option<Notification> {
notifications::table.filter(notifications::kind.eq(kind.into()))
.filter(notifications::object_id.eq(obj))
.get_result::<Notification>(conn)
.ok()
}
pub fn to_json(&self, conn: &PgConnection) -> serde_json::Value {
let mut json = json!(self);
json["object"] = json!(match self.kind.as_ref() {
notification_kind::COMMENT => Comment::get(conn, self.object_id).map(|comment|
json!({
"post": comment.get_post(conn).to_json(conn),
"user": comment.get_author(conn).to_json(conn),
"id": comment.id
})
),
notification_kind::FOLLOW => Follow::get(conn, self.object_id).map(|follow|
json!({
"follower": User::get(conn, follow.follower_id).map(|u| u.to_json(conn))
})
),
notification_kind::LIKE => Like::get(conn, self.object_id).map(|like|
json!({
"post": Post::get(conn, like.post_id).map(|p| p.to_json(conn)),
"user": User::get(conn, like.user_id).map(|u| u.to_json(conn))
})
),
notification_kind::MENTION => Mention::get(conn, self.object_id).map(|mention|
json!({
"user": mention.get_user(conn).map(|u| u.to_json(conn)),
"url": mention.get_post(conn).map(|p| p.to_json(conn)["url"].clone())
.unwrap_or_else(|| {
let comment = mention.get_comment(conn).expect("No comment nor post for mention");
let post = comment.get_post(conn).to_json(conn);
json!(format!("{}#comment-{}", post["url"].as_str().unwrap(), comment.id))
})
})
),
notification_kind::RESHARE => Reshare::get(conn, self.object_id).map(|reshare|
json!({
"post": reshare.get_post(conn).map(|p| p.to_json(conn)),
"user": reshare.get_user(conn).map(|u| u.to_json(conn))
})
),
_ => Some(json!({}))
});
json
}
}