crates/db_views_moderator/src/mod_transfer_community_view.rs

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