crates/db_views_actor/src/person_view.rs

   1 use crate::structs::PersonViewSafe;
   2 use diesel::{
   3   dsl::{now, IntervalDsl},
   4   result::Error,
   5   BoolExpressionMethods,
   6   ExpressionMethods,
   7   PgTextExpressionMethods,
   8   QueryDsl,
   9 };
  10 use diesel_async::RunQueryDsl;
  11 use lemmy_db_schema::{
  12   aggregates::structs::PersonAggregates,
  13   newtypes::PersonId,
  14   schema::{person, person_aggregates},
  15   source::person::{Person, PersonSafe},
  16   traits::{ToSafe, ViewToVec},
  17   utils::{fuzzy_search, get_conn, limit_and_offset, DbPool},
  18   SortType,
  19 };
  20 use std::iter::Iterator;
  21 use typed_builder::TypedBuilder;
  22
  23 type PersonViewSafeTuple = (PersonSafe, PersonAggregates);
  24
  25 impl PersonViewSafe {
  26   pub async fn read(pool: &DbPool, person_id: PersonId) -> Result<Self, Error> {
  27     let conn = &mut get_conn(pool).await?;
  28     let (person, counts) = person::table
  29       .find(person_id)
  30       .inner_join(person_aggregates::table)
  31       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
  32       .first::<PersonViewSafeTuple>(conn)
  33       .await?;
  34     Ok(Self { person, counts })
  35   }
  36
  37   pub async fn admins(pool: &DbPool) -> Result<Vec<Self>, Error> {
  38     let conn = &mut get_conn(pool).await?;
  39     let admins = person::table
  40       .inner_join(person_aggregates::table)
  41       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
  42       .filter(person::admin.eq(true))
  43       .filter(person::deleted.eq(false))
  44       .order_by(person::published)
  45       .load::<PersonViewSafeTuple>(conn)
  46       .await?;
  47
  48     Ok(Self::from_tuple_to_vec(admins))
  49   }
  50
  51   pub async fn banned(pool: &DbPool) -> Result<Vec<Self>, Error> {
  52     let conn = &mut get_conn(pool).await?;
  53     let banned = person::table
  54       .inner_join(person_aggregates::table)
  55       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
  56       .filter(
  57         person::banned.eq(true).and(
  58           person::ban_expires
  59             .is_null()
  60             .or(person::ban_expires.gt(now)),
  61         ),
  62       )
  63       .filter(person::deleted.eq(false))
  64       .load::<PersonViewSafeTuple>(conn)
  65       .await?;
  66
  67     Ok(Self::from_tuple_to_vec(banned))
  68   }
  69 }
  70
  71 #[derive(TypedBuilder)]
  72 #[builder(field_defaults(default))]
  73 pub struct PersonQuery<'a> {
  74   #[builder(!default)]
  75   pool: &'a DbPool,
  76   sort: Option<SortType>,
  77   search_term: Option<String>,
  78   page: Option<i64>,
  79   limit: Option<i64>,
  80 }
  81
  82 impl<'a> PersonQuery<'a> {
  83   pub async fn list(self) -> Result<Vec<PersonViewSafe>, Error> {
  84     let conn = &mut get_conn(self.pool).await?;
  85     let mut query = person::table
  86       .inner_join(person_aggregates::table)
  87       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
  88       .into_boxed();
  89
  90     if let Some(search_term) = self.search_term {
  91       let searcher = fuzzy_search(&search_term);
  92       query = query
  93         .filter(person::name.ilike(searcher.clone()))
  94         .or_filter(person::display_name.ilike(searcher));
  95     }
  96
  97     query = match self.sort.unwrap_or(SortType::Hot) {
  98       SortType::New | SortType::NewComments => query.order_by(person::published.desc()),
  99       SortType::Old => query.order_by(person::published.asc()),
 100       SortType::Hot | SortType::Active | SortType::TopAll => {
 101         query.order_by(person_aggregates::comment_score.desc())
 102       }
 103       SortType::MostComments => query.order_by(person_aggregates::comment_count.desc()),
 104       SortType::TopYear => query
 105         .filter(person::published.gt(now - 1.years()))
 106         .order_by(person_aggregates::comment_score.desc()),
 107       SortType::TopMonth => query
 108         .filter(person::published.gt(now - 1.months()))
 109         .order_by(person_aggregates::comment_score.desc()),
 110       SortType::TopWeek => query
 111         .filter(person::published.gt(now - 1.weeks()))
 112         .order_by(person_aggregates::comment_score.desc()),
 113       SortType::TopDay => query
 114         .filter(person::published.gt(now - 1.days()))
 115         .order_by(person_aggregates::comment_score.desc()),
 116     };
 117
 118     let (limit, offset) = limit_and_offset(self.page, self.limit)?;
 119     query = query.limit(limit).offset(offset);
 120
 121     let res = query.load::<PersonViewSafeTuple>(conn).await?;
 122
 123     Ok(PersonViewSafe::from_tuple_to_vec(res))
 124   }
 125 }
 126
 127 impl ViewToVec for PersonViewSafe {
 128   type DbTuple = PersonViewSafeTuple;
 129   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
 130     items
 131       .into_iter()
 132       .map(|a| Self {
 133         person: a.0,
 134         counts: a.1,
 135       })
 136       .collect::<Vec<Self>>()
 137   }
 138 }