Implement glue code between queries and sqlite

This commit is contained in:
Kiana Sheibani 2023-09-23 02:39:29 -04:00
parent d30dfb5372
commit 2c6587aca1
Signed by: toki
GPG key ID: 6CB106C25E86A9F7

View file

@ -1,3 +1,4 @@
use crate::queries::*;
use sqlite::*;
use std::fs::{self, File};
use std::path::{Path, PathBuf};
@ -66,3 +67,67 @@ fn adjust_ratings(ratings: Teams<&mut f64>, winner: usize) {
})
}
// Database Updating
pub fn add_players(connection: &Connection, teams: &Teams<PlayerData>) -> sqlite::Result<()> {
let query = "INSERT OR IGNORE INTO players VALUES (?, ?, ?, 1500)";
teams.iter().try_for_each(|team| {
team.iter().try_for_each(|PlayerData { id, name, prefix }| {
let mut statement = connection.prepare(query)?;
statement.bind((1, id.0 as i64))?;
statement.bind((2, name.as_ref().map(|x| &x[..])))?;
statement.bind((3, prefix.as_ref().map(|x| &x[..])))?;
statement.into_iter().try_for_each(|x| x.map(|_| ()))?;
Ok(())
})
})
}
pub fn get_ratings(
connection: &Connection,
teams: &Teams<PlayerData>,
) -> sqlite::Result<Teams<(PlayerId, f64)>> {
let query = "SELECT id, elo FROM players WHERE id = ?";
teams
.iter()
.map(|team| {
team.iter()
.map(|data| {
let mut statement = connection.prepare(query)?;
statement.bind((1, data.id.0 as i64))?;
statement.next()?;
Ok((data.id, statement.read::<f64, _>("elo")?))
})
.try_collect()
})
.try_collect()
}
pub fn update_ratings(connection: &Connection, elos: Teams<(PlayerId, f64)>) -> sqlite::Result<()> {
let query = "UPDATE players SET elo = :elo WHERE id = :id";
elos.into_iter().try_for_each(|team| {
team.into_iter().try_for_each(|(id, elo)| {
let mut statement = connection.prepare(query)?;
statement.bind((":elo", elo))?;
statement.bind((":id", id.0 as i64))?;
statement.into_iter().try_for_each(|x| x.map(|_| ()))?;
Ok(())
})
})
}
pub fn update_from_set(connection: &Connection, results: SetData) -> sqlite::Result<()> {
let players_data = results.teams;
add_players(connection, &players_data)?;
let mut elos = get_ratings(connection, &players_data)?;
adjust_ratings(
elos.iter_mut()
.map(|v| v.iter_mut().map(|x| &mut x.1).collect())
.collect(),
results.winner,
);
update_ratings(connection, elos)
}