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 };
  15 use serde::Serialize;
  16
  17 #[derive(Debug, Serialize, Clone)]
  18 pub struct PersonViewSafe {
  19   pub person: PersonSafe,
  20   pub counts: PersonAggregates,
  21 }
  22
  23 type PersonViewSafeTuple = (PersonSafe, PersonAggregates);
  24
  25 impl PersonViewSafe {
  26   pub fn read(conn: &PgConnection, id: i32) -> Result<Self, Error> {
  27     let (person, counts) = person::table
  28       .find(id)
  29       .inner_join(person_aggregates::table)
  30       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
  31       .first::<PersonViewSafeTuple>(conn)?;
  32     Ok(Self { person, counts })
  33   }
  34
  35   pub fn admins(conn: &PgConnection) -> Result<Vec<Self>, Error> {
  36     let admins = person::table
  37       .inner_join(person_aggregates::table)
  38       .inner_join(local_user::table)
  39       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
  40       .filter(local_user::admin.eq(true))
  41       .order_by(person::published)
  42       .load::<PersonViewSafeTuple>(conn)?;
  43
  44     Ok(Self::from_tuple_to_vec(admins))
  45   }
  46
  47   pub fn banned(conn: &PgConnection) -> Result<Vec<Self>, Error> {
  48     let banned = person::table
  49       .inner_join(person_aggregates::table)
  50       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
  51       .filter(person::banned.eq(true))
  52       .load::<PersonViewSafeTuple>(conn)?;
  53
  54     Ok(Self::from_tuple_to_vec(banned))
  55   }
  56 }
  57
  58 pub struct PersonQueryBuilder<'a> {
  59   conn: &'a PgConnection,
  60   sort: &'a SortType,
  61   search_term: Option<String>,
  62   page: Option<i64>,
  63   limit: Option<i64>,
  64 }
  65
  66 impl<'a> PersonQueryBuilder<'a> {
  67   pub fn create(conn: &'a PgConnection) -> Self {
  68     PersonQueryBuilder {
  69       conn,
  70       search_term: None,
  71       sort: &SortType::Hot,
  72       page: None,
  73       limit: None,
  74     }
  75   }
  76
  77   pub fn sort(mut self, sort: &'a SortType) -> Self {
  78     self.sort = sort;
  79     self
  80   }
  81
  82   pub fn search_term<T: MaybeOptional<String>>(mut self, search_term: T) -> Self {
  83     self.search_term = search_term.get_optional();
  84     self
  85   }
  86
  87   pub fn page<T: MaybeOptional<i64>>(mut self, page: T) -> Self {
  88     self.page = page.get_optional();
  89     self
  90   }
  91
  92   pub fn limit<T: MaybeOptional<i64>>(mut self, limit: T) -> Self {
  93     self.limit = limit.get_optional();
  94     self
  95   }
  96
  97   pub fn list(self) -> Result<Vec<PersonViewSafe>, Error> {
  98     let mut query = person::table
  99       .inner_join(person_aggregates::table)
 100       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
 101       .into_boxed();
 102
 103     if let Some(search_term) = self.search_term {
 104       query = query.filter(person::name.ilike(fuzzy_search(&search_term)));
 105     }
 106
 107     query = match self.sort {
 108       SortType::Hot => query
 109         .order_by(person_aggregates::comment_score.desc())
 110         .then_order_by(person::published.desc()),
 111       SortType::Active => query
 112         .order_by(person_aggregates::comment_score.desc())
 113         .then_order_by(person::published.desc()),
 114       SortType::New | SortType::MostComments | SortType::NewComments => {
 115         query.order_by(person::published.desc())
 116       }
 117       SortType::TopAll => query.order_by(person_aggregates::comment_score.desc()),
 118       SortType::TopYear => query
 119         .filter(person::published.gt(now - 1.years()))
 120         .order_by(person_aggregates::comment_score.desc()),
 121       SortType::TopMonth => query
 122         .filter(person::published.gt(now - 1.months()))
 123         .order_by(person_aggregates::comment_score.desc()),
 124       SortType::TopWeek => query
 125         .filter(person::published.gt(now - 1.weeks()))
 126         .order_by(person_aggregates::comment_score.desc()),
 127       SortType::TopDay => query
 128         .filter(person::published.gt(now - 1.days()))
 129         .order_by(person_aggregates::comment_score.desc()),
 130     };
 131
 132     let (limit, offset) = limit_and_offset(self.page, self.limit);
 133     query = query.limit(limit).offset(offset);
 134
 135     let res = query.load::<PersonViewSafeTuple>(self.conn)?;
 136
 137     Ok(PersonViewSafe::from_tuple_to_vec(res))
 138   }
 139 }
 140
 141 impl ViewToVec for PersonViewSafe {
 142   type DbTuple = PersonViewSafeTuple;
 143   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
 144     items
 145       .iter()
 146       .map(|a| Self {
 147         person: a.0.to_owned(),
 148         counts: a.1.to_owned(),
 149       })
 150       .collect::<Vec<Self>>()
 151   }
 152 }