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