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