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use sqlx::{SqliteConnection, Transaction, sqlite::Sqlite};
use crate::{
clock::DateTime,
db::NotFound,
event::{Instant, Sequence},
name::{self, Name},
password::StoredHash,
user::{self, History, User},
};
pub trait Provider {
fn auth(&mut self) -> Auth<'_>;
}
impl Provider for Transaction<'_, Sqlite> {
fn auth(&mut self) -> Auth<'_> {
Auth(self)
}
}
pub struct Auth<'t>(&'t mut SqliteConnection);
impl Auth<'_> {
pub async fn for_name(&mut self, name: &Name) -> Result<(History, StoredHash), LoadError> {
let name = name.canonical();
let row = sqlx::query!(
r#"
select
id as "id: user::Id",
login.display_name as "display_name: String",
login.canonical_name as "canonical_name: String",
user.created_sequence as "created_sequence: Sequence",
user.created_at as "created_at: DateTime",
login.password as "password: StoredHash"
from user
join login using (id)
where login.canonical_name = $1
"#,
name,
)
.fetch_one(&mut *self.0)
.await?;
let login = History {
user: User {
id: row.id,
name: Name::new(row.display_name, row.canonical_name)?,
},
created: Instant::new(row.created_at, row.created_sequence),
};
Ok((login, row.password))
}
pub async fn for_user(&mut self, user: &User) -> Result<(History, StoredHash), LoadError> {
let row = sqlx::query!(
r#"
select
id as "id: user::Id",
login.display_name as "display_name: String",
login.canonical_name as "canonical_name: String",
user.created_sequence as "created_sequence: Sequence",
user.created_at as "created_at: DateTime",
login.password as "password: StoredHash"
from user
join login using (id)
where id = $1
"#,
user.id,
)
.fetch_one(&mut *self.0)
.await?;
let user = History {
user: User {
id: row.id,
name: Name::new(row.display_name, row.canonical_name)?,
},
created: Instant::new(row.created_at, row.created_sequence),
};
Ok((user, row.password))
}
}
#[derive(Debug, thiserror::Error)]
#[error(transparent)]
pub enum LoadError {
Database(#[from] sqlx::Error),
Name(#[from] name::Error),
}
impl<T> NotFound for Result<T, LoadError> {
type Ok = T;
type Error = LoadError;
fn optional(self) -> Result<Option<T>, LoadError> {
match self {
Ok(value) => Ok(Some(value)),
Err(LoadError::Database(sqlx::Error::RowNotFound)) => Ok(None),
Err(other) => Err(other),
}
}
}
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