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