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(
  48         person::banned.eq(true).and(
  49           person::ban_expires
  50             .is_null()
  51             .or(person::ban_expires.gt(now)),
  52         ),
  53       )
  54       .load::<PersonViewSafeTuple>(conn)?;
  55
  56     Ok(Self::from_tuple_to_vec(banned))
  57   }
  58 }
  59
  60 pub struct PersonQueryBuilder<'a> {
  61   conn: &'a PgConnection,
  62   sort: Option<SortType>,
  63   search_term: Option<String>,
  64   page: Option<i64>,
  65   limit: Option<i64>,
  66 }
  67
  68 impl<'a> PersonQueryBuilder<'a> {
  69   pub fn create(conn: &'a PgConnection) -> Self {
  70     PersonQueryBuilder {
  71       conn,
  72       search_term: None,
  73       sort: None,
  74       page: None,
  75       limit: None,
  76     }
  77   }
  78
  79   pub fn sort<T: MaybeOptional<SortType>>(mut self, sort: T) -> Self {
  80     self.sort = sort.get_optional();
  81     self
  82   }
  83
  84   pub fn search_term<T: MaybeOptional<String>>(mut self, search_term: T) -> Self {
  85     self.search_term = search_term.get_optional();
  86     self
  87   }
  88
  89   pub fn page<T: MaybeOptional<i64>>(mut self, page: T) -> Self {
  90     self.page = page.get_optional();
  91     self
  92   }
  93
  94   pub fn limit<T: MaybeOptional<i64>>(mut self, limit: T) -> Self {
  95     self.limit = limit.get_optional();
  96     self
  97   }
  98
  99   pub fn list(self) -> Result<Vec<PersonViewSafe>, Error> {
 100     let mut query = person::table
 101       .inner_join(person_aggregates::table)
 102       .select((Person::safe_columns_tuple(), person_aggregates::all_columns))
 103       .into_boxed();
 104
 105     if let Some(search_term) = self.search_term {
 106       query = query.filter(person::name.ilike(fuzzy_search(&search_term)));
 107     }
 108
 109     query = match self.sort.unwrap_or(SortType::Hot) {
 110       SortType::Hot => query
 111         .order_by(person_aggregates::comment_score.desc())
 112         .then_order_by(person::published.desc()),
 113       SortType::Active => query
 114         .order_by(person_aggregates::comment_score.desc())
 115         .then_order_by(person::published.desc()),
 116       SortType::New | SortType::MostComments | SortType::NewComments => {
 117         query.order_by(person::published.desc())
 118       }
 119       SortType::TopAll => query.order_by(person_aggregates::comment_score.desc()),
 120       SortType::TopYear => query
 121         .filter(person::published.gt(now - 1.years()))
 122         .order_by(person_aggregates::comment_score.desc()),
 123       SortType::TopMonth => query
 124         .filter(person::published.gt(now - 1.months()))
 125         .order_by(person_aggregates::comment_score.desc()),
 126       SortType::TopWeek => query
 127         .filter(person::published.gt(now - 1.weeks()))
 128         .order_by(person_aggregates::comment_score.desc()),
 129       SortType::TopDay => query
 130         .filter(person::published.gt(now - 1.days()))
 131         .order_by(person_aggregates::comment_score.desc()),
 132     };
 133
 134     let (limit, offset) = limit_and_offset(self.page, self.limit);
 135     query = query.limit(limit).offset(offset);
 136
 137     let res = query.load::<PersonViewSafeTuple>(self.conn)?;
 138
 139     Ok(PersonViewSafe::from_tuple_to_vec(res))
 140   }
 141 }
 142
 143 impl ViewToVec for PersonViewSafe {
 144   type DbTuple = PersonViewSafeTuple;
 145   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
 146     items
 147       .iter()
 148       .map(|a| Self {
 149         person: a.0.to_owned(),
 150         counts: a.1.to_owned(),
 151       })
 152       .collect::<Vec<Self>>()
 153   }
 154 }