crates/db_views_actor/src/person_mention_view.rs

   1 use diesel::{result::Error, *};
   2 use lemmy_db_schema::{
   3   aggregates::comment_aggregates::CommentAggregates,
   4   functions::hot_rank,
   5   limit_and_offset,
   6   newtypes::{PersonId, PersonMentionId},
   7   schema::{
   8     comment,
   9     comment_aggregates,
  10     comment_like,
  11     comment_saved,
  12     community,
  13     community_follower,
  14     community_person_ban,
  15     person,
  16     person_alias_1,
  17     person_block,
  18     person_mention,
  19     post,
  20   },
  21   source::{
  22     comment::{Comment, CommentSaved},
  23     community::{Community, CommunityFollower, CommunityPersonBan, CommunitySafe},
  24     person::{Person, PersonAlias1, PersonSafe, PersonSafeAlias1},
  25     person_block::PersonBlock,
  26     person_mention::PersonMention,
  27     post::Post,
  28   },
  29   traits::{MaybeOptional, ToSafe, ViewToVec},
  30   SortType,
  31 };
  32 use serde::{Deserialize, Serialize};
  33
  34 #[derive(Debug, PartialEq, Serialize, Deserialize, Clone)]
  35 pub struct PersonMentionView {
  36   pub person_mention: PersonMention,
  37   pub comment: Comment,
  38   pub creator: PersonSafe,
  39   pub post: Post,
  40   pub community: CommunitySafe,
  41   pub recipient: PersonSafeAlias1,
  42   pub counts: CommentAggregates,
  43   pub creator_banned_from_community: bool, // Left Join to CommunityPersonBan
  44   pub subscribed: bool,                    // Left join to CommunityFollower
  45   pub saved: bool,                         // Left join to CommentSaved
  46   pub creator_blocked: bool,               // Left join to PersonBlock
  47   pub my_vote: Option<i16>,                // Left join to CommentLike
  48 }
  49
  50 type PersonMentionViewTuple = (
  51   PersonMention,
  52   Comment,
  53   PersonSafe,
  54   Post,
  55   CommunitySafe,
  56   PersonSafeAlias1,
  57   CommentAggregates,
  58   Option<CommunityPersonBan>,
  59   Option<CommunityFollower>,
  60   Option<CommentSaved>,
  61   Option<PersonBlock>,
  62   Option<i16>,
  63 );
  64
  65 impl PersonMentionView {
  66   pub fn read(
  67     conn: &PgConnection,
  68     person_mention_id: PersonMentionId,
  69     my_person_id: Option<PersonId>,
  70   ) -> Result<Self, Error> {
  71     // The left join below will return None in this case
  72     let person_id_join = my_person_id.unwrap_or(PersonId(-1));
  73
  74     let (
  75       person_mention,
  76       comment,
  77       creator,
  78       post,
  79       community,
  80       recipient,
  81       counts,
  82       creator_banned_from_community,
  83       subscribed,
  84       saved,
  85       creator_blocked,
  86       my_vote,
  87     ) = person_mention::table
  88       .find(person_mention_id)
  89       .inner_join(comment::table)
  90       .inner_join(person::table.on(comment::creator_id.eq(person::id)))
  91       .inner_join(post::table.on(comment::post_id.eq(post::id)))
  92       .inner_join(community::table.on(post::community_id.eq(community::id)))
  93       .inner_join(person_alias_1::table)
  94       .inner_join(comment_aggregates::table.on(comment::id.eq(comment_aggregates::comment_id)))
  95       .left_join(
  96         community_person_ban::table.on(
  97           community::id
  98             .eq(community_person_ban::community_id)
  99             .and(community_person_ban::person_id.eq(comment::creator_id)),
 100         ),
 101       )
 102       .left_join(
 103         community_follower::table.on(
 104           post::community_id
 105             .eq(community_follower::community_id)
 106             .and(community_follower::person_id.eq(person_id_join)),
 107         ),
 108       )
 109       .left_join(
 110         comment_saved::table.on(
 111           comment::id
 112             .eq(comment_saved::comment_id)
 113             .and(comment_saved::person_id.eq(person_id_join)),
 114         ),
 115       )
 116       .left_join(
 117         person_block::table.on(
 118           comment::creator_id
 119             .eq(person_block::target_id)
 120             .and(person_block::person_id.eq(person_id_join)),
 121         ),
 122       )
 123       .left_join(
 124         comment_like::table.on(
 125           comment::id
 126             .eq(comment_like::comment_id)
 127             .and(comment_like::person_id.eq(person_id_join)),
 128         ),
 129       )
 130       .select((
 131         person_mention::all_columns,
 132         comment::all_columns,
 133         Person::safe_columns_tuple(),
 134         post::all_columns,
 135         Community::safe_columns_tuple(),
 136         PersonAlias1::safe_columns_tuple(),
 137         comment_aggregates::all_columns,
 138         community_person_ban::all_columns.nullable(),
 139         community_follower::all_columns.nullable(),
 140         comment_saved::all_columns.nullable(),
 141         person_block::all_columns.nullable(),
 142         comment_like::score.nullable(),
 143       ))
 144       .first::<PersonMentionViewTuple>(conn)?;
 145
 146     Ok(PersonMentionView {
 147       person_mention,
 148       comment,
 149       creator,
 150       post,
 151       community,
 152       recipient,
 153       counts,
 154       creator_banned_from_community: creator_banned_from_community.is_some(),
 155       subscribed: subscribed.is_some(),
 156       saved: saved.is_some(),
 157       creator_blocked: creator_blocked.is_some(),
 158       my_vote,
 159     })
 160   }
 161
 162   /// Gets the number of unread mentions
 163   pub fn get_unread_mentions(conn: &PgConnection, my_person_id: PersonId) -> Result<i64, Error> {
 164     use diesel::dsl::*;
 165
 166     person_mention::table
 167       .filter(person_mention::recipient_id.eq(my_person_id))
 168       .filter(person_mention::read.eq(false))
 169       .select(count(person_mention::id))
 170       .first::<i64>(conn)
 171   }
 172 }
 173
 174 pub struct PersonMentionQueryBuilder<'a> {
 175   conn: &'a PgConnection,
 176   my_person_id: Option<PersonId>,
 177   recipient_id: Option<PersonId>,
 178   sort: Option<SortType>,
 179   unread_only: Option<bool>,
 180   page: Option<i64>,
 181   limit: Option<i64>,
 182 }
 183
 184 impl<'a> PersonMentionQueryBuilder<'a> {
 185   pub fn create(conn: &'a PgConnection) -> Self {
 186     PersonMentionQueryBuilder {
 187       conn,
 188       my_person_id: None,
 189       recipient_id: None,
 190       sort: None,
 191       unread_only: None,
 192       page: None,
 193       limit: None,
 194     }
 195   }
 196
 197   pub fn sort<T: MaybeOptional<SortType>>(mut self, sort: T) -> Self {
 198     self.sort = sort.get_optional();
 199     self
 200   }
 201
 202   pub fn unread_only<T: MaybeOptional<bool>>(mut self, unread_only: T) -> Self {
 203     self.unread_only = unread_only.get_optional();
 204     self
 205   }
 206
 207   pub fn recipient_id<T: MaybeOptional<PersonId>>(mut self, recipient_id: T) -> Self {
 208     self.recipient_id = recipient_id.get_optional();
 209     self
 210   }
 211
 212   pub fn my_person_id<T: MaybeOptional<PersonId>>(mut self, my_person_id: T) -> Self {
 213     self.my_person_id = my_person_id.get_optional();
 214     self
 215   }
 216
 217   pub fn page<T: MaybeOptional<i64>>(mut self, page: T) -> Self {
 218     self.page = page.get_optional();
 219     self
 220   }
 221
 222   pub fn limit<T: MaybeOptional<i64>>(mut self, limit: T) -> Self {
 223     self.limit = limit.get_optional();
 224     self
 225   }
 226
 227   pub fn list(self) -> Result<Vec<PersonMentionView>, Error> {
 228     use diesel::dsl::*;
 229
 230     // The left join below will return None in this case
 231     let person_id_join = self.my_person_id.unwrap_or(PersonId(-1));
 232
 233     let mut query = person_mention::table
 234       .inner_join(comment::table)
 235       .inner_join(person::table.on(comment::creator_id.eq(person::id)))
 236       .inner_join(post::table.on(comment::post_id.eq(post::id)))
 237       .inner_join(community::table.on(post::community_id.eq(community::id)))
 238       .inner_join(person_alias_1::table)
 239       .inner_join(comment_aggregates::table.on(comment::id.eq(comment_aggregates::comment_id)))
 240       .left_join(
 241         community_person_ban::table.on(
 242           community::id
 243             .eq(community_person_ban::community_id)
 244             .and(community_person_ban::person_id.eq(comment::creator_id)),
 245         ),
 246       )
 247       .left_join(
 248         community_follower::table.on(
 249           post::community_id
 250             .eq(community_follower::community_id)
 251             .and(community_follower::person_id.eq(person_id_join)),
 252         ),
 253       )
 254       .left_join(
 255         comment_saved::table.on(
 256           comment::id
 257             .eq(comment_saved::comment_id)
 258             .and(comment_saved::person_id.eq(person_id_join)),
 259         ),
 260       )
 261       .left_join(
 262         person_block::table.on(
 263           comment::creator_id
 264             .eq(person_block::target_id)
 265             .and(person_block::person_id.eq(person_id_join)),
 266         ),
 267       )
 268       .left_join(
 269         comment_like::table.on(
 270           comment::id
 271             .eq(comment_like::comment_id)
 272             .and(comment_like::person_id.eq(person_id_join)),
 273         ),
 274       )
 275       .select((
 276         person_mention::all_columns,
 277         comment::all_columns,
 278         Person::safe_columns_tuple(),
 279         post::all_columns,
 280         Community::safe_columns_tuple(),
 281         PersonAlias1::safe_columns_tuple(),
 282         comment_aggregates::all_columns,
 283         community_person_ban::all_columns.nullable(),
 284         community_follower::all_columns.nullable(),
 285         comment_saved::all_columns.nullable(),
 286         person_block::all_columns.nullable(),
 287         comment_like::score.nullable(),
 288       ))
 289       .into_boxed();
 290
 291     if let Some(recipient_id) = self.recipient_id {
 292       query = query.filter(person_mention::recipient_id.eq(recipient_id));
 293     }
 294
 295     if self.unread_only.unwrap_or(false) {
 296       query = query.filter(person_mention::read.eq(false));
 297     }
 298
 299     query = match self.sort.unwrap_or(SortType::Hot) {
 300       SortType::Hot | SortType::Active => query
 301         .order_by(hot_rank(comment_aggregates::score, comment_aggregates::published).desc())
 302         .then_order_by(comment_aggregates::published.desc()),
 303       SortType::New | SortType::MostComments | SortType::NewComments => {
 304         query.order_by(comment::published.desc())
 305       }
 306       SortType::TopAll => query.order_by(comment_aggregates::score.desc()),
 307       SortType::TopYear => query
 308         .filter(comment::published.gt(now - 1.years()))
 309         .order_by(comment_aggregates::score.desc()),
 310       SortType::TopMonth => query
 311         .filter(comment::published.gt(now - 1.months()))
 312         .order_by(comment_aggregates::score.desc()),
 313       SortType::TopWeek => query
 314         .filter(comment::published.gt(now - 1.weeks()))
 315         .order_by(comment_aggregates::score.desc()),
 316       SortType::TopDay => query
 317         .filter(comment::published.gt(now - 1.days()))
 318         .order_by(comment_aggregates::score.desc()),
 319     };
 320
 321     let (limit, offset) = limit_and_offset(self.page, self.limit);
 322
 323     let res = query
 324       .limit(limit)
 325       .offset(offset)
 326       .load::<PersonMentionViewTuple>(self.conn)?;
 327
 328     Ok(PersonMentionView::from_tuple_to_vec(res))
 329   }
 330 }
 331
 332 impl ViewToVec for PersonMentionView {
 333   type DbTuple = PersonMentionViewTuple;
 334   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
 335     items
 336       .iter()
 337       .map(|a| Self {
 338         person_mention: a.0.to_owned(),
 339         comment: a.1.to_owned(),
 340         creator: a.2.to_owned(),
 341         post: a.3.to_owned(),
 342         community: a.4.to_owned(),
 343         recipient: a.5.to_owned(),
 344         counts: a.6.to_owned(),
 345         creator_banned_from_community: a.7.is_some(),
 346         subscribed: a.8.is_some(),
 347         saved: a.9.is_some(),
 348         creator_blocked: a.10.is_some(),
 349         my_vote: a.11,
 350       })
 351       .collect::<Vec<Self>>()
 352   }
 353 }