crates/db_views_moderator/src/mod_add_community_view.rs

   1 use crate::structs::{ModAddCommunityView, 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_add_community, person},
  15   source::{
  16     community::{Community, CommunitySafe},
  17     moderator::ModAddCommunity,
  18     person::{Person, PersonSafe},
  19   },
  20   traits::{ToSafe, ViewToVec},
  21   utils::{get_conn, limit_and_offset, DbPool},
  22 };
  23
  24 type ModAddCommunityViewTuple = (
  25   ModAddCommunity,
  26   Option<PersonSafe>,
  27   CommunitySafe,
  28   PersonSafe,
  29 );
  30
  31 impl ModAddCommunityView {
  32   pub async fn list(pool: &DbPool, params: ModlogListParams) -> Result<Vec<Self>, Error> {
  33     let conn = &mut get_conn(pool).await?;
  34     let person_alias_1 = diesel::alias!(person as person1);
  35     let admin_person_id_join = params.mod_person_id.unwrap_or(PersonId(-1));
  36     let show_mod_names = !params.hide_modlog_names;
  37     let show_mod_names_expr = show_mod_names.as_sql::<diesel::sql_types::Bool>();
  38
  39     let admin_names_join = mod_add_community::mod_person_id
  40       .eq(person::id)
  41       .and(show_mod_names_expr.or(person::id.eq(admin_person_id_join)));
  42     let mut query = mod_add_community::table
  43       .left_join(person::table.on(admin_names_join))
  44       .inner_join(community::table)
  45       .inner_join(
  46         person_alias_1.on(mod_add_community::other_person_id.eq(person_alias_1.field(person::id))),
  47       )
  48       .select((
  49         mod_add_community::all_columns,
  50         Person::safe_columns_tuple().nullable(),
  51         Community::safe_columns_tuple(),
  52         person_alias_1.fields(Person::safe_columns_tuple()),
  53       ))
  54       .into_boxed();
  55
  56     if let Some(mod_person_id) = params.mod_person_id {
  57       query = query.filter(mod_add_community::mod_person_id.eq(mod_person_id));
  58     };
  59
  60     if let Some(community_id) = params.community_id {
  61       query = query.filter(mod_add_community::community_id.eq(community_id));
  62     };
  63
  64     if let Some(other_person_id) = params.other_person_id {
  65       query = query.filter(person_alias_1.field(person::id).eq(other_person_id));
  66     };
  67
  68     let (limit, offset) = limit_and_offset(params.page, params.limit)?;
  69
  70     let res = query
  71       .limit(limit)
  72       .offset(offset)
  73       .order_by(mod_add_community::when_.desc())
  74       .load::<ModAddCommunityViewTuple>(conn)
  75       .await?;
  76
  77     let results = Self::from_tuple_to_vec(res);
  78     Ok(results)
  79   }
  80 }
  81
  82 impl ViewToVec for ModAddCommunityView {
  83   type DbTuple = ModAddCommunityViewTuple;
  84   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
  85     items
  86       .into_iter()
  87       .map(|a| Self {
  88         mod_add_community: a.0,
  89         moderator: a.1,
  90         community: a.2,
  91         modded_person: a.3,
  92       })
  93       .collect::<Vec<Self>>()
  94   }
  95 }