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use diesel::{prelude::*, PgConnection, QueryResult};
use serde::{Deserialize, Serialize};
use crate::db::bots::Bot;
use crate::schema::{bots, ratings, users};
#[derive(Queryable, Debug, Insertable, PartialEq, Serialize, Deserialize)]
pub struct Rating {
pub bot_id: i32,
pub rating: f64,
}
pub fn get_rating(bot_id: i32, db_conn: &mut PgConnection) -> QueryResult<Option<f64>> {
ratings::table
.filter(ratings::bot_id.eq(bot_id))
.select(ratings::rating)
.first(db_conn)
.optional()
}
pub fn set_rating(bot_id: i32, rating: f64, db_conn: &mut PgConnection) -> QueryResult<usize> {
diesel::insert_into(ratings::table)
.values(Rating { bot_id, rating })
.on_conflict(ratings::bot_id)
.do_update()
.set(ratings::rating.eq(rating))
.execute(db_conn)
}
#[derive(Queryable, Serialize, Deserialize)]
pub struct Author {
id: i32,
username: String,
}
#[derive(Queryable, Serialize, Deserialize)]
pub struct RankedBot {
pub bot: Bot,
pub author: Option<Author>,
pub rating: f64,
}
pub fn get_bot_ranking(db_conn: &mut PgConnection) -> QueryResult<Vec<RankedBot>> {
bots::table
.left_join(users::table)
.inner_join(ratings::table)
.select((
bots::all_columns,
(users::id, users::username).nullable(),
ratings::rating,
))
.order_by(ratings::rating.desc())
.get_results(db_conn)
}
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