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::{
  16     community::{Community, CommunitySafe},
  17     moderator::ModTransferCommunity,
  18     person::{Person, PersonSafe},
  19   },
  20   traits::{ToSafe, ViewToVec},
  21   utils::{get_conn, limit_and_offset, DbPool},
  22 };
  23
  24 type ModTransferCommunityViewTuple = (
  25   ModTransferCommunity,
  26   Option<PersonSafe>,
  27   CommunitySafe,
  28   PersonSafe,
  29 );
  30
  31 impl ModTransferCommunityView {
  32   pub async fn list(pool: &DbPool, params: ModlogListParams) -> Result<Vec<Self>, Error> {
  33     let conn = &mut get_conn(pool).await?;
  34
  35     let person_alias_1 = diesel::alias!(person as person1);
  36     let admin_person_id_join = params.mod_person_id.unwrap_or(PersonId(-1));
  37     let show_mod_names = !params.hide_modlog_names;
  38     let show_mod_names_expr = show_mod_names.as_sql::<diesel::sql_types::Bool>();
  39
  40     let admin_names_join = mod_transfer_community::mod_person_id
  41       .eq(person::id)
  42       .and(show_mod_names_expr.or(person::id.eq(admin_person_id_join)));
  43     let mut query = mod_transfer_community::table
  44       .left_join(person::table.on(admin_names_join))
  45       .inner_join(community::table)
  46       .inner_join(
  47         person_alias_1
  48           .on(mod_transfer_community::other_person_id.eq(person_alias_1.field(person::id))),
  49       )
  50       .select((
  51         mod_transfer_community::all_columns,
  52         Person::safe_columns_tuple().nullable(),
  53         Community::safe_columns_tuple(),
  54         person_alias_1.fields(Person::safe_columns_tuple()),
  55       ))
  56       .into_boxed();
  57
  58     if let Some(mod_person_id) = params.mod_person_id {
  59       query = query.filter(mod_transfer_community::mod_person_id.eq(mod_person_id));
  60     };
  61
  62     if let Some(community_id) = params.community_id {
  63       query = query.filter(mod_transfer_community::community_id.eq(community_id));
  64     };
  65
  66     if let Some(other_person_id) = params.other_person_id {
  67       query = query.filter(person_alias_1.field(person::id).eq(other_person_id));
  68     };
  69
  70     let (limit, offset) = limit_and_offset(params.page, params.limit)?;
  71
  72     let res = query
  73       .limit(limit)
  74       .offset(offset)
  75       .order_by(mod_transfer_community::when_.desc())
  76       .load::<ModTransferCommunityViewTuple>(conn)
  77       .await?;
  78
  79     let results = Self::from_tuple_to_vec(res);
  80     Ok(results)
  81   }
  82 }
  83
  84 impl ViewToVec for ModTransferCommunityView {
  85   type DbTuple = ModTransferCommunityViewTuple;
  86   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
  87     items
  88       .into_iter()
  89       .map(|a| Self {
  90         mod_transfer_community: a.0,
  91         moderator: a.1,
  92         community: a.2,
  93         modded_person: a.3,
  94       })
  95       .collect::<Vec<Self>>()
  96   }
  97 }