crates/db_views_moderator/src/admin_purge_person_view.rs

   1 use crate::structs::{AdminPurgePersonView, ModlogListParams};
   2 use diesel::{
   3   result::Error,
   4   BoolExpressionMethods,
   5   ExpressionMethods,
   6   IntoSql,
   7   JoinOnDsl,
   8   NullableExpressionMethods,
   9   QueryDsl,
  10 };
  11 use diesel_async::RunQueryDsl;
  12 use lemmy_db_schema::{
  13   newtypes::PersonId,
  14   schema::{admin_purge_person, person},
  15   source::{
  16     moderator::AdminPurgePerson,
  17     person::{Person, PersonSafe},
  18   },
  19   traits::{ToSafe, ViewToVec},
  20   utils::{get_conn, limit_and_offset, DbPool},
  21 };
  22
  23 type AdminPurgePersonViewTuple = (AdminPurgePerson, Option<PersonSafe>);
  24
  25 impl AdminPurgePersonView {
  26   pub async fn list(pool: &DbPool, params: ModlogListParams) -> Result<Vec<Self>, Error> {
  27     let conn = &mut get_conn(pool).await?;
  28
  29     let admin_person_id_join = params.mod_person_id.unwrap_or(PersonId(-1));
  30     let show_mod_names = !params.hide_modlog_names;
  31     let show_mod_names_expr = show_mod_names.as_sql::<diesel::sql_types::Bool>();
  32
  33     let admin_names_join = admin_purge_person::admin_person_id
  34       .eq(person::id)
  35       .and(show_mod_names_expr.or(person::id.eq(admin_person_id_join)));
  36     let mut query = admin_purge_person::table
  37       .left_join(person::table.on(admin_names_join))
  38       .select((
  39         admin_purge_person::all_columns,
  40         Person::safe_columns_tuple().nullable(),
  41       ))
  42       .into_boxed();
  43
  44     if let Some(admin_person_id) = params.mod_person_id {
  45       query = query.filter(admin_purge_person::admin_person_id.eq(admin_person_id));
  46     };
  47
  48     let (limit, offset) = limit_and_offset(params.page, params.limit)?;
  49
  50     let res = query
  51       .limit(limit)
  52       .offset(offset)
  53       .order_by(admin_purge_person::when_.desc())
  54       .load::<AdminPurgePersonViewTuple>(conn)
  55       .await?;
  56
  57     let results = Self::from_tuple_to_vec(res);
  58     Ok(results)
  59   }
  60 }
  61
  62 impl ViewToVec for AdminPurgePersonView {
  63   type DbTuple = AdminPurgePersonViewTuple;
  64   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
  65     items
  66       .into_iter()
  67       .map(|a| Self {
  68         admin_purge_person: a.0,
  69         admin: a.1,
  70       })
  71       .collect::<Vec<Self>>()
  72   }
  73 }