crates/db_views_moderator/src/mod_hide_community_view.rs

   1 use crate::structs::{ModHideCommunityView, 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::{community, mod_hide_community, person},
  15   source::{
  16     community::{Community, CommunitySafe},
  17     moderator::ModHideCommunity,
  18     person::{Person, PersonSafe},
  19   },
  20   traits::{ToSafe, ViewToVec},
  21   utils::{get_conn, limit_and_offset, DbPool},
  22 };
  23
  24 type ModHideCommunityViewTuple = (ModHideCommunity, Option<PersonSafe>, CommunitySafe);
  25
  26 impl ModHideCommunityView {
  27   // Pass in mod_id as admin_id because only admins can do this action
  28   pub async fn list(pool: &DbPool, params: ModlogListParams) -> Result<Vec<Self>, Error> {
  29     let conn = &mut get_conn(pool).await?;
  30
  31     let admin_person_id_join = params.mod_person_id.unwrap_or(PersonId(-1));
  32     let show_mod_names = !params.hide_modlog_names;
  33     let show_mod_names_expr = show_mod_names.as_sql::<diesel::sql_types::Bool>();
  34
  35     let admin_names_join = mod_hide_community::mod_person_id
  36       .eq(person::id)
  37       .and(show_mod_names_expr.or(person::id.eq(admin_person_id_join)));
  38     let mut query = mod_hide_community::table
  39       .left_join(person::table.on(admin_names_join))
  40       .inner_join(community::table.on(mod_hide_community::community_id.eq(community::id)))
  41       .select((
  42         mod_hide_community::all_columns,
  43         Person::safe_columns_tuple().nullable(),
  44         Community::safe_columns_tuple(),
  45       ))
  46       .into_boxed();
  47
  48     if let Some(community_id) = params.community_id {
  49       query = query.filter(mod_hide_community::community_id.eq(community_id));
  50     };
  51
  52     if let Some(admin_id) = params.mod_person_id {
  53       query = query.filter(mod_hide_community::mod_person_id.eq(admin_id));
  54     };
  55
  56     let (limit, offset) = limit_and_offset(params.page, params.limit)?;
  57
  58     let res = query
  59       .limit(limit)
  60       .offset(offset)
  61       .order_by(mod_hide_community::when_.desc())
  62       .load::<ModHideCommunityViewTuple>(conn)
  63       .await?;
  64
  65     let results = Self::from_tuple_to_vec(res);
  66     Ok(results)
  67   }
  68 }
  69
  70 impl ViewToVec for ModHideCommunityView {
  71   type DbTuple = ModHideCommunityViewTuple;
  72   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
  73     items
  74       .into_iter()
  75       .map(|a| Self {
  76         mod_hide_community: a.0,
  77         admin: a.1,
  78         community: a.2,
  79       })
  80       .collect::<Vec<Self>>()
  81   }
  82 }