lemmy/crates/db_views/src/private_message_view.rs
dullbananas 88215bfbc9
Remove TypedBuilder from db_views and db_views_actor (#3637)
* change pool fields to parameters for list

* remove my_person_id and admin fields

* Change recipient id to list param

* Remove TypedBuilder from db_views and db_views_actor
2023-07-17 12:20:25 +02:00

146 lines
3.9 KiB
Rust

use crate::structs::PrivateMessageView;
use diesel::{
debug_query,
pg::Pg,
result::Error,
BoolExpressionMethods,
ExpressionMethods,
JoinOnDsl,
QueryDsl,
};
use diesel_async::RunQueryDsl;
use lemmy_db_schema::{
newtypes::{PersonId, PrivateMessageId},
schema::{person, private_message},
source::{person::Person, private_message::PrivateMessage},
traits::JoinView,
utils::{get_conn, limit_and_offset, DbPool},
};
use tracing::debug;
type PrivateMessageViewTuple = (PrivateMessage, Person, Person);
impl PrivateMessageView {
pub async fn read(
pool: &mut DbPool<'_>,
private_message_id: PrivateMessageId,
) -> Result<Self, Error> {
let conn = &mut get_conn(pool).await?;
let person_alias_1 = diesel::alias!(person as person1);
let (private_message, creator, recipient) = private_message::table
.find(private_message_id)
.inner_join(person::table.on(private_message::creator_id.eq(person::id)))
.inner_join(
person_alias_1.on(private_message::recipient_id.eq(person_alias_1.field(person::id))),
)
.order_by(private_message::published.desc())
.select((
private_message::all_columns,
person::all_columns,
person_alias_1.fields(person::all_columns),
))
.first::<PrivateMessageViewTuple>(conn)
.await?;
Ok(PrivateMessageView {
private_message,
creator,
recipient,
})
}
/// Gets the number of unread messages
pub async fn get_unread_messages(
pool: &mut DbPool<'_>,
my_person_id: PersonId,
) -> Result<i64, Error> {
use diesel::dsl::count;
let conn = &mut get_conn(pool).await?;
private_message::table
.filter(private_message::read.eq(false))
.filter(private_message::recipient_id.eq(my_person_id))
.filter(private_message::deleted.eq(false))
.select(count(private_message::id))
.first::<i64>(conn)
.await
}
}
#[derive(Default)]
pub struct PrivateMessageQuery {
pub unread_only: Option<bool>,
pub page: Option<i64>,
pub limit: Option<i64>,
}
impl PrivateMessageQuery {
pub async fn list(
self,
pool: &mut DbPool<'_>,
recipient_id: PersonId,
) -> Result<Vec<PrivateMessageView>, Error> {
let conn = &mut get_conn(pool).await?;
let person_alias_1 = diesel::alias!(person as person1);
let mut query = private_message::table
.inner_join(person::table.on(private_message::creator_id.eq(person::id)))
.inner_join(
person_alias_1.on(private_message::recipient_id.eq(person_alias_1.field(person::id))),
)
.select((
private_message::all_columns,
person::all_columns,
person_alias_1.fields(person::all_columns),
))
.into_boxed();
// If its unread, I only want the ones to me
if self.unread_only.unwrap_or(false) {
query = query
.filter(private_message::read.eq(false))
.filter(private_message::recipient_id.eq(recipient_id));
}
// Otherwise, I want the ALL view to show both sent and received
else {
query = query.filter(
private_message::recipient_id
.eq(recipient_id)
.or(private_message::creator_id.eq(recipient_id)),
)
}
let (limit, offset) = limit_and_offset(self.page, self.limit)?;
query = query
.filter(private_message::deleted.eq(false))
.limit(limit)
.offset(offset)
.order_by(private_message::published.desc());
debug!(
"Private Message View Query: {:?}",
debug_query::<Pg, _>(&query)
);
let res = query.load::<PrivateMessageViewTuple>(conn).await?;
Ok(
res
.into_iter()
.map(PrivateMessageView::from_tuple)
.collect(),
)
}
}
impl JoinView for PrivateMessageView {
type JoinTuple = PrivateMessageViewTuple;
fn from_tuple(a: Self::JoinTuple) -> Self {
Self {
private_message: a.0,
creator: a.1,
recipient: a.2,
}
}
}