crates/db_views_moderator/src/admin_purge_comment_view.rs

   1 use crate::structs::{AdminPurgeCommentView, 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_comment, person, post},
  15   source::{
  16     moderator::AdminPurgeComment,
  17     person::{Person, PersonSafe},
  18     post::Post,
  19   },
  20   traits::{ToSafe, ViewToVec},
  21   utils::{get_conn, limit_and_offset, DbPool},
  22 };
  23
  24 type AdminPurgeCommentViewTuple = (AdminPurgeComment, Option<PersonSafe>, Post);
  25
  26 impl AdminPurgeCommentView {
  27   pub async fn list(pool: &DbPool, params: ModlogListParams) -> Result<Vec<Self>, Error> {
  28     let conn = &mut get_conn(pool).await?;
  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_comment::admin_person_id
  34       .eq(person::id)
  35       .and(show_mod_names_expr.or(person::id.eq(admin_person_id_join)));
  36
  37     let mut query = admin_purge_comment::table
  38       .left_join(person::table.on(admin_names_join))
  39       .inner_join(post::table)
  40       .select((
  41         admin_purge_comment::all_columns,
  42         Person::safe_columns_tuple().nullable(),
  43         post::all_columns,
  44       ))
  45       .into_boxed();
  46
  47     if let Some(admin_person_id) = params.mod_person_id {
  48       query = query.filter(admin_purge_comment::admin_person_id.eq(admin_person_id));
  49     };
  50
  51     let (limit, offset) = limit_and_offset(params.page, params.limit)?;
  52
  53     let res = query
  54       .limit(limit)
  55       .offset(offset)
  56       .order_by(admin_purge_comment::when_.desc())
  57       .load::<AdminPurgeCommentViewTuple>(conn)
  58       .await?;
  59
  60     let results = Self::from_tuple_to_vec(res);
  61     Ok(results)
  62   }
  63 }
  64
  65 impl ViewToVec for AdminPurgeCommentView {
  66   type DbTuple = AdminPurgeCommentViewTuple;
  67   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
  68     items
  69       .into_iter()
  70       .map(|a| Self {
  71         admin_purge_comment: a.0,
  72         admin: a.1,
  73         post: a.2,
  74       })
  75       .collect::<Vec<Self>>()
  76   }
  77 }