crates/db_views_actor/src/person_mention_view.rs

   1 use crate::structs::PersonMentionView;
   2 use diesel::{dsl::*, result::Error, *};
   3 use lemmy_db_schema::{
   4   aggregates::structs::CommentAggregates,
   5   newtypes::{PersonId, PersonMentionId},
   6   schema::{
   7     comment,
   8     comment_aggregates,
   9     comment_like,
  10     comment_saved,
  11     community,
  12     community_follower,
  13     community_person_ban,
  14     person,
  15     person_alias_1,
  16     person_block,
  17     person_mention,
  18     post,
  19   },
  20   source::{
  21     comment::{Comment, CommentSaved},
  22     community::{Community, CommunityFollower, CommunityPersonBan, CommunitySafe},
  23     person::{Person, PersonAlias1, PersonSafe, PersonSafeAlias1},
  24     person_block::PersonBlock,
  25     person_mention::PersonMention,
  26     post::Post,
  27   },
  28   traits::{MaybeOptional, ToSafe, ViewToVec},
  29   utils::{functions::hot_rank, limit_and_offset},
  30   SortType,
  31 };
  32
  33 type PersonMentionViewTuple = (
  34   PersonMention,
  35   Comment,
  36   PersonSafe,
  37   Post,
  38   CommunitySafe,
  39   PersonSafeAlias1,
  40   CommentAggregates,
  41   Option<CommunityPersonBan>,
  42   Option<CommunityFollower>,
  43   Option<CommentSaved>,
  44   Option<PersonBlock>,
  45   Option<i16>,
  46 );
  47
  48 impl PersonMentionView {
  49   pub fn read(
  50     conn: &PgConnection,
  51     person_mention_id: PersonMentionId,
  52     my_person_id: Option<PersonId>,
  53   ) -> Result<Self, Error> {
  54     // The left join below will return None in this case
  55     let person_id_join = my_person_id.unwrap_or(PersonId(-1));
  56
  57     let (
  58       person_mention,
  59       comment,
  60       creator,
  61       post,
  62       community,
  63       recipient,
  64       counts,
  65       creator_banned_from_community,
  66       subscribed,
  67       saved,
  68       creator_blocked,
  69       my_vote,
  70     ) = person_mention::table
  71       .find(person_mention_id)
  72       .inner_join(comment::table)
  73       .inner_join(person::table.on(comment::creator_id.eq(person::id)))
  74       .inner_join(post::table.on(comment::post_id.eq(post::id)))
  75       .inner_join(community::table.on(post::community_id.eq(community::id)))
  76       .inner_join(person_alias_1::table)
  77       .inner_join(comment_aggregates::table.on(comment::id.eq(comment_aggregates::comment_id)))
  78       .left_join(
  79         community_person_ban::table.on(
  80           community::id
  81             .eq(community_person_ban::community_id)
  82             .and(community_person_ban::person_id.eq(comment::creator_id))
  83             .and(
  84               community_person_ban::expires
  85                 .is_null()
  86                 .or(community_person_ban::expires.gt(now)),
  87             ),
  88         ),
  89       )
  90       .left_join(
  91         community_follower::table.on(
  92           post::community_id
  93             .eq(community_follower::community_id)
  94             .and(community_follower::person_id.eq(person_id_join)),
  95         ),
  96       )
  97       .left_join(
  98         comment_saved::table.on(
  99           comment::id
 100             .eq(comment_saved::comment_id)
 101             .and(comment_saved::person_id.eq(person_id_join)),
 102         ),
 103       )
 104       .left_join(
 105         person_block::table.on(
 106           comment::creator_id
 107             .eq(person_block::target_id)
 108             .and(person_block::person_id.eq(person_id_join)),
 109         ),
 110       )
 111       .left_join(
 112         comment_like::table.on(
 113           comment::id
 114             .eq(comment_like::comment_id)
 115             .and(comment_like::person_id.eq(person_id_join)),
 116         ),
 117       )
 118       .select((
 119         person_mention::all_columns,
 120         comment::all_columns,
 121         Person::safe_columns_tuple(),
 122         post::all_columns,
 123         Community::safe_columns_tuple(),
 124         PersonAlias1::safe_columns_tuple(),
 125         comment_aggregates::all_columns,
 126         community_person_ban::all_columns.nullable(),
 127         community_follower::all_columns.nullable(),
 128         comment_saved::all_columns.nullable(),
 129         person_block::all_columns.nullable(),
 130         comment_like::score.nullable(),
 131       ))
 132       .first::<PersonMentionViewTuple>(conn)?;
 133
 134     Ok(PersonMentionView {
 135       person_mention,
 136       comment,
 137       creator,
 138       post,
 139       community,
 140       recipient,
 141       counts,
 142       creator_banned_from_community: creator_banned_from_community.is_some(),
 143       subscribed: subscribed.is_some(),
 144       saved: saved.is_some(),
 145       creator_blocked: creator_blocked.is_some(),
 146       my_vote,
 147     })
 148   }
 149
 150   /// Gets the number of unread mentions
 151   pub fn get_unread_mentions(conn: &PgConnection, my_person_id: PersonId) -> Result<i64, Error> {
 152     use diesel::dsl::*;
 153
 154     person_mention::table
 155       .filter(person_mention::recipient_id.eq(my_person_id))
 156       .filter(person_mention::read.eq(false))
 157       .select(count(person_mention::id))
 158       .first::<i64>(conn)
 159   }
 160 }
 161
 162 pub struct PersonMentionQueryBuilder<'a> {
 163   conn: &'a PgConnection,
 164   my_person_id: Option<PersonId>,
 165   recipient_id: Option<PersonId>,
 166   sort: Option<SortType>,
 167   unread_only: Option<bool>,
 168   page: Option<i64>,
 169   limit: Option<i64>,
 170 }
 171
 172 impl<'a> PersonMentionQueryBuilder<'a> {
 173   pub fn create(conn: &'a PgConnection) -> Self {
 174     PersonMentionQueryBuilder {
 175       conn,
 176       my_person_id: None,
 177       recipient_id: None,
 178       sort: None,
 179       unread_only: None,
 180       page: None,
 181       limit: None,
 182     }
 183   }
 184
 185   pub fn sort<T: MaybeOptional<SortType>>(mut self, sort: T) -> Self {
 186     self.sort = sort.get_optional();
 187     self
 188   }
 189
 190   pub fn unread_only<T: MaybeOptional<bool>>(mut self, unread_only: T) -> Self {
 191     self.unread_only = unread_only.get_optional();
 192     self
 193   }
 194
 195   pub fn recipient_id<T: MaybeOptional<PersonId>>(mut self, recipient_id: T) -> Self {
 196     self.recipient_id = recipient_id.get_optional();
 197     self
 198   }
 199
 200   pub fn my_person_id<T: MaybeOptional<PersonId>>(mut self, my_person_id: T) -> Self {
 201     self.my_person_id = my_person_id.get_optional();
 202     self
 203   }
 204
 205   pub fn page<T: MaybeOptional<i64>>(mut self, page: T) -> Self {
 206     self.page = page.get_optional();
 207     self
 208   }
 209
 210   pub fn limit<T: MaybeOptional<i64>>(mut self, limit: T) -> Self {
 211     self.limit = limit.get_optional();
 212     self
 213   }
 214
 215   pub fn list(self) -> Result<Vec<PersonMentionView>, Error> {
 216     use diesel::dsl::*;
 217
 218     // The left join below will return None in this case
 219     let person_id_join = self.my_person_id.unwrap_or(PersonId(-1));
 220
 221     let mut query = person_mention::table
 222       .inner_join(comment::table)
 223       .inner_join(person::table.on(comment::creator_id.eq(person::id)))
 224       .inner_join(post::table.on(comment::post_id.eq(post::id)))
 225       .inner_join(community::table.on(post::community_id.eq(community::id)))
 226       .inner_join(person_alias_1::table)
 227       .inner_join(comment_aggregates::table.on(comment::id.eq(comment_aggregates::comment_id)))
 228       .left_join(
 229         community_person_ban::table.on(
 230           community::id
 231             .eq(community_person_ban::community_id)
 232             .and(community_person_ban::person_id.eq(comment::creator_id))
 233             .and(
 234               community_person_ban::expires
 235                 .is_null()
 236                 .or(community_person_ban::expires.gt(now)),
 237             ),
 238         ),
 239       )
 240       .left_join(
 241         community_follower::table.on(
 242           post::community_id
 243             .eq(community_follower::community_id)
 244             .and(community_follower::person_id.eq(person_id_join)),
 245         ),
 246       )
 247       .left_join(
 248         comment_saved::table.on(
 249           comment::id
 250             .eq(comment_saved::comment_id)
 251             .and(comment_saved::person_id.eq(person_id_join)),
 252         ),
 253       )
 254       .left_join(
 255         person_block::table.on(
 256           comment::creator_id
 257             .eq(person_block::target_id)
 258             .and(person_block::person_id.eq(person_id_join)),
 259         ),
 260       )
 261       .left_join(
 262         comment_like::table.on(
 263           comment::id
 264             .eq(comment_like::comment_id)
 265             .and(comment_like::person_id.eq(person_id_join)),
 266         ),
 267       )
 268       .select((
 269         person_mention::all_columns,
 270         comment::all_columns,
 271         Person::safe_columns_tuple(),
 272         post::all_columns,
 273         Community::safe_columns_tuple(),
 274         PersonAlias1::safe_columns_tuple(),
 275         comment_aggregates::all_columns,
 276         community_person_ban::all_columns.nullable(),
 277         community_follower::all_columns.nullable(),
 278         comment_saved::all_columns.nullable(),
 279         person_block::all_columns.nullable(),
 280         comment_like::score.nullable(),
 281       ))
 282       .into_boxed();
 283
 284     if let Some(recipient_id) = self.recipient_id {
 285       query = query.filter(person_mention::recipient_id.eq(recipient_id));
 286     }
 287
 288     if self.unread_only.unwrap_or(false) {
 289       query = query.filter(person_mention::read.eq(false));
 290     }
 291
 292     query = match self.sort.unwrap_or(SortType::Hot) {
 293       SortType::Hot | SortType::Active => query
 294         .order_by(hot_rank(comment_aggregates::score, comment_aggregates::published).desc())
 295         .then_order_by(comment_aggregates::published.desc()),
 296       SortType::New | SortType::MostComments | SortType::NewComments => {
 297         query.order_by(comment::published.desc())
 298       }
 299       SortType::TopAll => query.order_by(comment_aggregates::score.desc()),
 300       SortType::TopYear => query
 301         .filter(comment::published.gt(now - 1.years()))
 302         .order_by(comment_aggregates::score.desc()),
 303       SortType::TopMonth => query
 304         .filter(comment::published.gt(now - 1.months()))
 305         .order_by(comment_aggregates::score.desc()),
 306       SortType::TopWeek => query
 307         .filter(comment::published.gt(now - 1.weeks()))
 308         .order_by(comment_aggregates::score.desc()),
 309       SortType::TopDay => query
 310         .filter(comment::published.gt(now - 1.days()))
 311         .order_by(comment_aggregates::score.desc()),
 312     };
 313
 314     let (limit, offset) = limit_and_offset(self.page, self.limit);
 315
 316     let res = query
 317       .limit(limit)
 318       .offset(offset)
 319       .load::<PersonMentionViewTuple>(self.conn)?;
 320
 321     Ok(PersonMentionView::from_tuple_to_vec(res))
 322   }
 323 }
 324
 325 impl ViewToVec for PersonMentionView {
 326   type DbTuple = PersonMentionViewTuple;
 327   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
 328     items
 329       .iter()
 330       .map(|a| Self {
 331         person_mention: a.0.to_owned(),
 332         comment: a.1.to_owned(),
 333         creator: a.2.to_owned(),
 334         post: a.3.to_owned(),
 335         community: a.4.to_owned(),
 336         recipient: a.5.to_owned(),
 337         counts: a.6.to_owned(),
 338         creator_banned_from_community: a.7.is_some(),
 339         subscribed: a.8.is_some(),
 340         saved: a.9.is_some(),
 341         creator_blocked: a.10.is_some(),
 342         my_vote: a.11,
 343       })
 344       .collect::<Vec<Self>>()
 345   }
 346 }