crates/db_views_actor/src/person_view.rs

   1 use diesel::{dsl::*, result::Error, *};
   2 use lemmy_db_queries::{
   3   aggregates::person_aggregates::PersonAggregates,
   4   fuzzy_search,
   5   limit_and_offset,
   6   MaybeOptional,
   7   SortType,
   8   ToSafe,
   9   ViewToVec,
  10 };
  11 use lemmy_db_schema::{
  12   schema::{local_user, person, person_aggregates},
  13   source::person::{Person, PersonSafe},
  14   PersonId,
  15 };
  16 use serde::Serialize;
  17
  18 #[derive(Debug, Serialize, Clone)]
  19 pub struct PersonViewSafe {
  20   pub person: PersonSafe,
  21   pub counts: PersonAggregates,
  22 }
  23
  24 type PersonViewSafeTuple = (PersonSafe, PersonAggregates);
  25
  26 impl PersonViewSafe {
  27   pub fn read(conn: &PgConnection, person_id: PersonId) -> Result<Self, Error> {
  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     Ok(Self { person, counts })
  34   }
  35
  36   pub fn admins(conn: &PgConnection) -> Result<Vec<Self>, Error> {
  37     let admins = person::table
  38       .inner_join(person_aggregates::table)
  39       .inner_join(local_user::table)
  40       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
  41       .filter(local_user::admin.eq(true))
  42       .order_by(person::published)
  43       .load::<PersonViewSafeTuple>(conn)?;
  44
  45     Ok(Self::from_tuple_to_vec(admins))
  46   }
  47
  48   pub fn banned(conn: &PgConnection) -> Result<Vec<Self>, Error> {
  49     let banned = person::table
  50       .inner_join(person_aggregates::table)
  51       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
  52       .filter(person::banned.eq(true))
  53       .load::<PersonViewSafeTuple>(conn)?;
  54
  55     Ok(Self::from_tuple_to_vec(banned))
  56   }
  57 }
  58
  59 pub struct PersonQueryBuilder<'a> {
  60   conn: &'a PgConnection,
  61   sort: &'a SortType,
  62   search_term: Option<String>,
  63   page: Option<i64>,
  64   limit: Option<i64>,
  65 }
  66
  67 impl<'a> PersonQueryBuilder<'a> {
  68   pub fn create(conn: &'a PgConnection) -> Self {
  69     PersonQueryBuilder {
  70       conn,
  71       search_term: None,
  72       sort: &SortType::Hot,
  73       page: None,
  74       limit: None,
  75     }
  76   }
  77
  78   pub fn sort(mut self, sort: &'a SortType) -> Self {
  79     self.sort = sort;
  80     self
  81   }
  82
  83   pub fn search_term<T: MaybeOptional<String>>(mut self, search_term: T) -> Self {
  84     self.search_term = search_term.get_optional();
  85     self
  86   }
  87
  88   pub fn page<T: MaybeOptional<i64>>(mut self, page: T) -> Self {
  89     self.page = page.get_optional();
  90     self
  91   }
  92
  93   pub fn limit<T: MaybeOptional<i64>>(mut self, limit: T) -> Self {
  94     self.limit = limit.get_optional();
  95     self
  96   }
  97
  98   pub fn list(self) -> Result<Vec<PersonViewSafe>, Error> {
  99     let mut query = person::table
 100       .inner_join(person_aggregates::table)
 101       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
 102       .into_boxed();
 103
 104     if let Some(search_term) = self.search_term {
 105       query = query.filter(person::name.ilike(fuzzy_search(&search_term)));
 106     }
 107
 108     query = match self.sort {
 109       SortType::Hot => query
 110         .order_by(person_aggregates::comment_score.desc())
 111         .then_order_by(person::published.desc()),
 112       SortType::Active => query
 113         .order_by(person_aggregates::comment_score.desc())
 114         .then_order_by(person::published.desc()),
 115       SortType::New | SortType::MostComments | SortType::NewComments => {
 116         query.order_by(person::published.desc())
 117       }
 118       SortType::TopAll => query.order_by(person_aggregates::comment_score.desc()),
 119       SortType::TopYear => query
 120         .filter(person::published.gt(now - 1.years()))
 121         .order_by(person_aggregates::comment_score.desc()),
 122       SortType::TopMonth => query
 123         .filter(person::published.gt(now - 1.months()))
 124         .order_by(person_aggregates::comment_score.desc()),
 125       SortType::TopWeek => query
 126         .filter(person::published.gt(now - 1.weeks()))
 127         .order_by(person_aggregates::comment_score.desc()),
 128       SortType::TopDay => query
 129         .filter(person::published.gt(now - 1.days()))
 130         .order_by(person_aggregates::comment_score.desc()),
 131     };
 132
 133     let (limit, offset) = limit_and_offset(self.page, self.limit);
 134     query = query.limit(limit).offset(offset);
 135
 136     let res = query.load::<PersonViewSafeTuple>(self.conn)?;
 137
 138     Ok(PersonViewSafe::from_tuple_to_vec(res))
 139   }
 140 }
 141
 142 impl ViewToVec for PersonViewSafe {
 143   type DbTuple = PersonViewSafeTuple;
 144   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
 145     items
 146       .iter()
 147       .map(|a| Self {
 148         person: a.0.to_owned(),
 149         counts: a.1.to_owned(),
 150       })
 151       .collect::<Vec<Self>>()
 152   }
 153 }