crates/db_views_actor/src/person_view.rs

   1 use diesel::{dsl::*, result::Error, *};
   2 use lemmy_db_schema::{
   3   aggregates::person_aggregates::PersonAggregates,
   4   fuzzy_search,
   5   limit_and_offset,
   6   newtypes::PersonId,
   7   schema::{person, person_aggregates},
   8   source::person::{Person, PersonSafe},
   9   traits::{MaybeOptional, ToSafe, ViewToVec},
  10   SortType,
  11 };
  12 use serde::{Deserialize, Serialize};
  13
  14 #[derive(Debug, Serialize, Deserialize, Clone)]
  15 pub struct PersonViewSafe {
  16   pub person: PersonSafe,
  17   pub counts: PersonAggregates,
  18 }
  19
  20 type PersonViewSafeTuple = (PersonSafe, PersonAggregates);
  21
  22 impl PersonViewSafe {
  23   pub fn read(conn: &PgConnection, person_id: PersonId) -> Result<Self, Error> {
  24     let (person, counts) = person::table
  25       .find(person_id)
  26       .inner_join(person_aggregates::table)
  27       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
  28       .first::<PersonViewSafeTuple>(conn)?;
  29     Ok(Self { person, counts })
  30   }
  31
  32   pub fn admins(conn: &PgConnection) -> Result<Vec<Self>, Error> {
  33     let admins = person::table
  34       .inner_join(person_aggregates::table)
  35       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
  36       .filter(person::admin.eq(true))
  37       .order_by(person::published)
  38       .load::<PersonViewSafeTuple>(conn)?;
  39
  40     Ok(Self::from_tuple_to_vec(admins))
  41   }
  42
  43   pub fn banned(conn: &PgConnection) -> Result<Vec<Self>, Error> {
  44     let banned = person::table
  45       .inner_join(person_aggregates::table)
  46       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
  47       .filter(person::banned.eq(true))
  48       .load::<PersonViewSafeTuple>(conn)?;
  49
  50     Ok(Self::from_tuple_to_vec(banned))
  51   }
  52 }
  53
  54 pub struct PersonQueryBuilder<'a> {
  55   conn: &'a PgConnection,
  56   sort: Option<SortType>,
  57   search_term: Option<String>,
  58   page: Option<i64>,
  59   limit: Option<i64>,
  60 }
  61
  62 impl<'a> PersonQueryBuilder<'a> {
  63   pub fn create(conn: &'a PgConnection) -> Self {
  64     PersonQueryBuilder {
  65       conn,
  66       search_term: None,
  67       sort: None,
  68       page: None,
  69       limit: None,
  70     }
  71   }
  72
  73   pub fn sort<T: MaybeOptional<SortType>>(mut self, sort: T) -> Self {
  74     self.sort = sort.get_optional();
  75     self
  76   }
  77
  78   pub fn search_term<T: MaybeOptional<String>>(mut self, search_term: T) -> Self {
  79     self.search_term = search_term.get_optional();
  80     self
  81   }
  82
  83   pub fn page<T: MaybeOptional<i64>>(mut self, page: T) -> Self {
  84     self.page = page.get_optional();
  85     self
  86   }
  87
  88   pub fn limit<T: MaybeOptional<i64>>(mut self, limit: T) -> Self {
  89     self.limit = limit.get_optional();
  90     self
  91   }
  92
  93   pub fn list(self) -> Result<Vec<PersonViewSafe>, Error> {
  94     let mut query = person::table
  95       .inner_join(person_aggregates::table)
  96       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
  97       .into_boxed();
  98
  99     if let Some(search_term) = self.search_term {
 100       query = query.filter(person::name.ilike(fuzzy_search(&search_term)));
 101     }
 102
 103     query = match self.sort.unwrap_or(SortType::Hot) {
 104       SortType::Hot => query
 105         .order_by(person_aggregates::comment_score.desc())
 106         .then_order_by(person::published.desc()),
 107       SortType::Active => query
 108         .order_by(person_aggregates::comment_score.desc())
 109         .then_order_by(person::published.desc()),
 110       SortType::New | SortType::MostComments | SortType::NewComments => {
 111         query.order_by(person::published.desc())
 112       }
 113       SortType::TopAll => query.order_by(person_aggregates::comment_score.desc()),
 114       SortType::TopYear => query
 115         .filter(person::published.gt(now - 1.years()))
 116         .order_by(person_aggregates::comment_score.desc()),
 117       SortType::TopMonth => query
 118         .filter(person::published.gt(now - 1.months()))
 119         .order_by(person_aggregates::comment_score.desc()),
 120       SortType::TopWeek => query
 121         .filter(person::published.gt(now - 1.weeks()))
 122         .order_by(person_aggregates::comment_score.desc()),
 123       SortType::TopDay => query
 124         .filter(person::published.gt(now - 1.days()))
 125         .order_by(person_aggregates::comment_score.desc()),
 126     };
 127
 128     let (limit, offset) = limit_and_offset(self.page, self.limit);
 129     query = query.limit(limit).offset(offset);
 130
 131     let res = query.load::<PersonViewSafeTuple>(self.conn)?;
 132
 133     Ok(PersonViewSafe::from_tuple_to_vec(res))
 134   }
 135 }
 136
 137 impl ViewToVec for PersonViewSafe {
 138   type DbTuple = PersonViewSafeTuple;
 139   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
 140     items
 141       .iter()
 142       .map(|a| Self {
 143         person: a.0.to_owned(),
 144         counts: a.1.to_owned(),
 145       })
 146       .collect::<Vec<Self>>()
 147   }
 148 }