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use diesel::{dsl::*, result::Error, *};
use lemmy_db_queries::{
aggregates::user_aggregates::UserAggregates,
fuzzy_search,
limit_and_offset,
MaybeOptional,
SortType,
ToSafe,
ViewToVec,
};
use lemmy_db_schema::{
schema::{user_, user_aggregates},
source::user::{UserSafe, User_},
};
use serde::Serialize;
#[derive(Debug, Serialize, Clone)]
pub struct UserViewSafe {
pub user: UserSafe,
pub counts: UserAggregates,
}
type UserViewSafeTuple = (UserSafe, UserAggregates);
impl UserViewSafe {
pub fn read(conn: &PgConnection, id: i32) -> Result<Self, Error> {
let (user, counts) = user_::table
.find(id)
.inner_join(user_aggregates::table)
.select((User_::safe_columns_tuple(), user_aggregates::all_columns))
.first::<UserViewSafeTuple>(conn)?;
Ok(Self { user, counts })
}
pub fn admins(conn: &PgConnection) -> Result<Vec<Self>, Error> {
let admins = user_::table
.inner_join(user_aggregates::table)
.select((User_::safe_columns_tuple(), user_aggregates::all_columns))
.filter(user_::admin.eq(true))
.order_by(user_::published)
.load::<UserViewSafeTuple>(conn)?;
Ok(Self::from_tuple_to_vec(admins))
}
pub fn banned(conn: &PgConnection) -> Result<Vec<Self>, Error> {
let banned = user_::table
.inner_join(user_aggregates::table)
.select((User_::safe_columns_tuple(), user_aggregates::all_columns))
.filter(user_::banned.eq(true))
.load::<UserViewSafeTuple>(conn)?;
Ok(Self::from_tuple_to_vec(banned))
}
}
pub struct UserQueryBuilder<'a> {
conn: &'a PgConnection,
sort: &'a SortType,
search_term: Option<String>,
page: Option<i64>,
limit: Option<i64>,
}
impl<'a> UserQueryBuilder<'a> {
pub fn create(conn: &'a PgConnection) -> Self {
UserQueryBuilder {
conn,
search_term: None,
sort: &SortType::Hot,
page: None,
limit: None,
}
}
pub fn sort(mut self, sort: &'a SortType) -> Self {
self.sort = sort;
self
}
pub fn search_term<T: MaybeOptional<String>>(mut self, search_term: T) -> Self {
self.search_term = search_term.get_optional();
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<UserViewSafe>, Error> {
let mut query = user_::table
.inner_join(user_aggregates::table)
.select((User_::safe_columns_tuple(), user_aggregates::all_columns))
.into_boxed();
if let Some(search_term) = self.search_term {
query = query.filter(user_::name.ilike(fuzzy_search(&search_term)));
}
query = match self.sort {
SortType::Hot => query
.order_by(user_aggregates::comment_score.desc())
.then_order_by(user_::published.desc()),
SortType::Active => query
.order_by(user_aggregates::comment_score.desc())
.then_order_by(user_::published.desc()),
SortType::New | SortType::MostComments | SortType::NewComments => {
query.order_by(user_::published.desc())
}
SortType::TopAll => query.order_by(user_aggregates::comment_score.desc()),
SortType::TopYear => query
.filter(user_::published.gt(now - 1.years()))
.order_by(user_aggregates::comment_score.desc()),
SortType::TopMonth => query
.filter(user_::published.gt(now - 1.months()))
.order_by(user_aggregates::comment_score.desc()),
SortType::TopWeek => query
.filter(user_::published.gt(now - 1.weeks()))
.order_by(user_aggregates::comment_score.desc()),
SortType::TopDay => query
.filter(user_::published.gt(now - 1.days()))
.order_by(user_aggregates::comment_score.desc()),
};
let (limit, offset) = limit_and_offset(self.page, self.limit);
query = query.limit(limit).offset(offset);
let res = query.load::<UserViewSafeTuple>(self.conn)?;
Ok(UserViewSafe::from_tuple_to_vec(res))
}
}
impl ViewToVec for UserViewSafe {
type DbTuple = UserViewSafeTuple;
fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
items
.iter()
.map(|a| Self {
user: a.0.to_owned(),
counts: a.1.to_owned(),
})
.collect::<Vec<Self>>()
}
}