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|
use std::mem;
use crate::database::error::DatabaseError;
use chrono::{DateTime, NaiveDate, TimeZone, Utc};
use proto::touchpad::common::v1::{Gender, SwimMeet, Swimmer, Team};
use sqlx::postgres::{PgPool, PgPoolOptions};
use proto::ProtoTimestamp;
pub struct PostgresClient {
pool: PgPool,
}
impl PostgresClient {
pub async fn new<S: AsRef<str>>(url: S) -> Result<PostgresClient, sqlx::Error> {
Ok(PostgresClient {
pool: PgPoolOptions::new().connect(url.as_ref()).await?,
})
}
}
#[async_trait::async_trait]
impl super::DatabaseClient for PostgresClient {
async fn get_swimmer(&self, id: u32) -> Result<Swimmer, DatabaseError> {
let swimmer: SwimmersTableSchema = sqlx::query_as!(
SwimmersTableSchema,
"SELECT * FROM swimmers WHERE id = $1;",
id as i32
)
.fetch_one(&self.pool)
.await?;
Ok(Swimmer {
id,
name: swimmer.name,
gender: Gender::from_iso_5218(swimmer.gender as u8) as i32,
})
}
async fn add_swimmer(&self, swimmer: &Swimmer) -> Result<(), DatabaseError> {
let gender = Gender::from_i32(swimmer.gender)
.ok_or(DatabaseError::BadInput("Invalid gender".into()))?
.to_iso_5218();
sqlx::query!(
"INSERT INTO swimmers VALUES ($1, $2, $3);",
swimmer.id as i32,
swimmer.name,
gender as i16
)
.execute(&self.pool)
.await?;
Ok(())
}
async fn get_team(&self, id: u32) -> crate::database::Result<Team> {
let team: TeamsTableSchema = sqlx::query_as!(
TeamsTableSchema,
"SELECT * FROM teams WHERE id = $1;",
id as i32
)
.fetch_one(&self.pool)
.await?;
Ok(Team {
id,
name: team.name,
})
}
async fn add_team(&self, team: &Team) -> crate::database::Result<()> {
sqlx::query!(
"INSERT INTO teams VALUES ($1, $2);",
team.id as i32,
team.name
)
.execute(&self.pool)
.await?;
Ok(())
}
async fn get_meet(&self, id: u32) -> crate::database::Result<SwimMeet> {
let mut meet: Vec<GetMeetSchema> = sqlx::query_as!(
GetMeetSchema,
"
SELECT meets.name as meet_name, start_date, end_date, team_id, t.name as team_name
FROM meets
INNER JOIN meets_teams mt on meets.id = mt.meet_id
INNER JOIN teams t on mt.team_id = t.id
WHERE meets.id = $1;
",
id as i32
)
.fetch_all(&self.pool)
.await?;
let meet_name = mem::take(&mut meet.get_mut(0).ok_or(DatabaseError::NotFound)?.meet_name);
let start = meet.get(0).ok_or(DatabaseError::NotFound)?.start_date.and_hms(0, 0, 0);
let end = meet.get(0).ok_or(DatabaseError::NotFound)?.end_date.and_hms(0, 0, 0);
let teams = meet.into_iter()
.map(|m| Team {
id: m.team_id as u32,
name: m.team_name,
})
.collect();
Ok(SwimMeet {
id,
meet_name,
start: Some(Utc.from_utc_datetime(&start).into()),
end: Some(Utc.from_utc_datetime(&end).into()),
teams,
points: Default::default(),
})
}
async fn add_meet(&self, meet: &SwimMeet) -> crate::database::Result<()> {
let mut tx = self.pool.begin().await?;
// Convert protobuf timestamp into chrono Datetime
let start_date: DateTime<Utc> = {
let proto_timestamp: ProtoTimestamp = meet.start.clone()
.ok_or(DatabaseError::BadInput("empty start date".into()))?
.into();
proto_timestamp.into()
};
let end_date: DateTime<Utc> = {
let proto_timestamp: ProtoTimestamp = meet.end.clone()
.ok_or(DatabaseError::BadInput("empty end date".into()))?
.into();
proto_timestamp.into()
};
// Insert into meets table
sqlx::query!(
"INSERT INTO meets VALUES ($1, $2, $3, $4)",
meet.id as i32,
meet.meet_name,
start_date.date_naive(),
end_date.date_naive(),
)
.execute(&mut tx)
.await?;
for team in &meet.teams {
sqlx::query!(
"INSERT INTO teams VALUES ($1, $2) ON CONFLICT DO NOTHING",
team.id as i32,
team.name,
)
.execute(&mut tx)
.await?;
sqlx::query!(
"INSERT INTO meets_teams VALUES ($1, $2)",
meet.id as i32,
team.id as i32,
)
.execute(&mut tx)
.await?;
}
tx.commit().await?;
Ok(())
}
}
struct SwimmersTableSchema {
id: i32,
name: String,
gender: i16,
}
struct TeamsTableSchema {
id: i32,
name: String,
}
struct GetMeetSchema {
meet_name: String,
start_date: NaiveDate,
end_date: NaiveDate,
team_id: i32,
team_name: String,
}
|
