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use futures::stream::{StreamExt as _, TryStreamExt as _};
use sqlx::{sqlite::Sqlite, SqliteConnection, Transaction};
use crate::{
clock::DateTime,
event::{Instant, ResumePoint, Sequence},
login::{password::StoredHash, History, Id, Login},
name::{self, Name},
};
pub trait Provider {
fn logins(&mut self) -> Logins;
}
impl<'c> Provider for Transaction<'c, Sqlite> {
fn logins(&mut self) -> Logins {
Logins(self)
}
}
pub struct Logins<'t>(&'t mut SqliteConnection);
impl<'c> Logins<'c> {
pub async fn create(
&mut self,
name: &Name,
password_hash: &StoredHash,
created: &Instant,
) -> Result<History, sqlx::Error> {
let id = Id::generate();
let display_name = name.display();
let canonical_name = name.canonical();
sqlx::query!(
r#"
insert
into login (id, display_name, canonical_name, password_hash, created_sequence, created_at)
values ($1, $2, $3, $4, $5, $6)
"#,
id,
display_name,
canonical_name,
password_hash,
created.sequence,
created.at,
)
.execute(&mut *self.0)
.await?;
let login = History {
created: *created,
login: Login {
id,
name: name.clone(),
},
};
Ok(login)
}
pub async fn all(&mut self, resume_at: ResumePoint) -> Result<Vec<History>, LoadError> {
let logins = sqlx::query!(
r#"
select
id as "id: Id",
display_name as "display_name: String",
canonical_name as "canonical_name: String",
created_sequence as "created_sequence: Sequence",
created_at as "created_at: DateTime"
from login
where coalesce(created_sequence <= $1, true)
order by created_sequence
"#,
resume_at,
)
.map(|row| {
Ok::<_, LoadError>(History {
login: Login {
id: row.id,
name: Name::new(row.display_name, row.canonical_name)?,
},
created: Instant::new(row.created_at, row.created_sequence),
})
})
.fetch(&mut *self.0)
.map(|res| res?)
.try_collect()
.await?;
Ok(logins)
}
pub async fn replay(&mut self, resume_at: ResumePoint) -> Result<Vec<History>, LoadError> {
let logins = sqlx::query!(
r#"
select
id as "id: Id",
display_name as "display_name: String",
canonical_name as "canonical_name: String",
created_sequence as "created_sequence: Sequence",
created_at as "created_at: DateTime"
from login
where coalesce(login.created_sequence > $1, true)
"#,
resume_at,
)
.map(|row| {
Ok::<_, name::Error>(History {
login: Login {
id: row.id,
name: Name::new(row.display_name, row.canonical_name)?,
},
created: Instant::new(row.created_at, row.created_sequence),
})
})
.fetch(&mut *self.0)
.map(|res| Ok::<_, LoadError>(res??))
.try_collect()
.await?;
Ok(logins)
}
}
#[derive(Debug, thiserror::Error)]
#[error(transparent)]
pub enum LoadError {
Database(#[from] sqlx::Error),
Name(#[from] name::Error),
}
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