lemmy/crates/db_views/src/private_message_view.rs

149 lines
4.3 KiB
Rust
Raw Normal View History

2021-01-06 21:02:08 +00:00
use diesel::{pg::Pg, result::Error, *};
use lemmy_db_schema::{
2021-10-16 13:33:38 +00:00
limit_and_offset,
newtypes::{PersonId, PrivateMessageId},
2021-03-11 04:43:11 +00:00
schema::{person, person_alias_1, private_message},
source::{
2021-03-11 04:43:11 +00:00
person::{Person, PersonAlias1, PersonSafe, PersonSafeAlias1},
private_message::PrivateMessage,
},
2021-10-16 13:33:38 +00:00
traits::{MaybeOptional, ToSafe, ViewToVec},
};
use serde::{Deserialize, Serialize};
2021-11-23 12:16:47 +00:00
use tracing::debug;
2020-12-16 22:16:48 +00:00
#[derive(Debug, PartialEq, Serialize, Deserialize, Clone)]
2020-12-16 22:16:48 +00:00
pub struct PrivateMessageView {
pub private_message: PrivateMessage,
2021-03-10 22:33:55 +00:00
pub creator: PersonSafe,
pub recipient: PersonSafeAlias1,
2020-12-16 22:16:48 +00:00
}
2021-03-10 22:33:55 +00:00
type PrivateMessageViewTuple = (PrivateMessage, PersonSafe, PersonSafeAlias1);
2020-12-16 22:16:48 +00:00
impl PrivateMessageView {
pub fn read(conn: &PgConnection, private_message_id: PrivateMessageId) -> Result<Self, Error> {
2020-12-16 22:16:48 +00:00
let (private_message, creator, recipient) = private_message::table
.find(private_message_id)
2021-03-10 22:33:55 +00:00
.inner_join(person::table.on(private_message::creator_id.eq(person::id)))
.inner_join(person_alias_1::table.on(private_message::recipient_id.eq(person_alias_1::id)))
2020-12-16 22:16:48 +00:00
.order_by(private_message::published.desc())
.select((
private_message::all_columns,
2021-03-10 22:33:55 +00:00
Person::safe_columns_tuple(),
PersonAlias1::safe_columns_tuple(),
2020-12-16 22:16:48 +00:00
))
.first::<PrivateMessageViewTuple>(conn)?;
Ok(PrivateMessageView {
private_message,
creator,
recipient,
})
}
/// Gets the number of unread messages
pub fn get_unread_messages(conn: &PgConnection, my_person_id: PersonId) -> Result<i64, Error> {
use diesel::dsl::*;
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)
}
2020-12-16 22:16:48 +00:00
}
pub struct PrivateMessageQueryBuilder<'a> {
conn: &'a PgConnection,
recipient_id: PersonId,
unread_only: Option<bool>,
2020-12-16 22:16:48 +00:00
page: Option<i64>,
limit: Option<i64>,
}
impl<'a> PrivateMessageQueryBuilder<'a> {
pub fn create(conn: &'a PgConnection, recipient_id: PersonId) -> Self {
2020-12-16 22:16:48 +00:00
PrivateMessageQueryBuilder {
conn,
recipient_id,
unread_only: None,
2020-12-16 22:16:48 +00:00
page: None,
limit: None,
}
}
pub fn unread_only<T: MaybeOptional<bool>>(mut self, unread_only: T) -> Self {
self.unread_only = unread_only.get_optional();
2020-12-16 22:16:48 +00:00
self
}
pub fn page<T: MaybeOptional<i64>>(mut self, page: T) -> Self {
self.page = page.get_optional();
self
}
pub fn limit<T: MaybeOptional<i64>>(mut self, limit: T) -> Self {
self.limit = limit.get_optional();
self
}
pub fn list(self) -> Result<Vec<PrivateMessageView>, Error> {
let mut query = private_message::table
2021-03-10 22:33:55 +00:00
.inner_join(person::table.on(private_message::creator_id.eq(person::id)))
.inner_join(person_alias_1::table.on(private_message::recipient_id.eq(person_alias_1::id)))
2020-12-16 22:16:48 +00:00
.select((
private_message::all_columns,
2021-03-10 22:33:55 +00:00
Person::safe_columns_tuple(),
PersonAlias1::safe_columns_tuple(),
2020-12-16 22:16:48 +00:00
))
.into_boxed();
// If its unread, I only want the ones to me
if self.unread_only.unwrap_or(false) {
2020-12-16 22:16:48 +00:00
query = query
.filter(private_message::read.eq(false))
.filter(private_message::recipient_id.eq(self.recipient_id));
}
// Otherwise, I want the ALL view to show both sent and received
else {
query = query.filter(
private_message::recipient_id
.eq(self.recipient_id)
.or(private_message::creator_id.eq(self.recipient_id)),
)
}
let (limit, offset) = limit_and_offset(self.page, self.limit);
2021-01-06 21:02:08 +00:00
query = query
2020-12-16 22:16:48 +00:00
.filter(private_message::deleted.eq(false))
.limit(limit)
.offset(offset)
2021-01-06 21:02:08 +00:00
.order_by(private_message::published.desc());
debug!(
"Private Message View Query: {:?}",
debug_query::<Pg, _>(&query)
);
let res = query.load::<PrivateMessageViewTuple>(self.conn)?;
2020-12-16 22:16:48 +00:00
Ok(PrivateMessageView::from_tuple_to_vec(res))
2020-12-16 22:16:48 +00:00
}
}
impl ViewToVec for PrivateMessageView {
type DbTuple = PrivateMessageViewTuple;
fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
items
.iter()
2020-12-16 22:16:48 +00:00
.map(|a| Self {
private_message: a.0.to_owned(),
creator: a.1.to_owned(),
recipient: a.2.to_owned(),
})
.collect::<Vec<Self>>()
}
}