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_block,
  16     person_mention,
  17     post,
  18   },
  19   source::{
  20     comment::{Comment, CommentSaved},
  21     community::{Community, CommunityFollower, CommunityPersonBan, CommunitySafe},
  22     person::{Person, PersonSafe},
  23     person_block::PersonBlock,
  24     person_mention::PersonMention,
  25     post::Post,
  26   },
  27   traits::{ToSafe, ViewToVec},
  28   utils::{functions::hot_rank, limit_and_offset},
  29   CommentSortType,
  30 };
  31 use typed_builder::TypedBuilder;
  32
  33 type PersonMentionViewTuple = (
  34   PersonMention,
  35   Comment,
  36   PersonSafe,
  37   Post,
  38   CommunitySafe,
  39   PersonSafe,
  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: &mut PgConnection,
  51     person_mention_id: PersonMentionId,
  52     my_person_id: Option<PersonId>,
  53   ) -> Result<Self, Error> {
  54     let person_alias_1 = diesel::alias!(person as person1);
  55
  56     // The left join below will return None in this case
  57     let person_id_join = my_person_id.unwrap_or(PersonId(-1));
  58
  59     let (
  60       person_mention,
  61       comment,
  62       creator,
  63       post,
  64       community,
  65       recipient,
  66       counts,
  67       creator_banned_from_community,
  68       follower,
  69       saved,
  70       creator_blocked,
  71       my_vote,
  72     ) = person_mention::table
  73       .find(person_mention_id)
  74       .inner_join(comment::table)
  75       .inner_join(person::table.on(comment::creator_id.eq(person::id)))
  76       .inner_join(post::table.on(comment::post_id.eq(post::id)))
  77       .inner_join(community::table.on(post::community_id.eq(community::id)))
  78       .inner_join(person_alias_1)
  79       .inner_join(comment_aggregates::table.on(comment::id.eq(comment_aggregates::comment_id)))
  80       .left_join(
  81         community_person_ban::table.on(
  82           community::id
  83             .eq(community_person_ban::community_id)
  84             .and(community_person_ban::person_id.eq(comment::creator_id))
  85             .and(
  86               community_person_ban::expires
  87                 .is_null()
  88                 .or(community_person_ban::expires.gt(now)),
  89             ),
  90         ),
  91       )
  92       .left_join(
  93         community_follower::table.on(
  94           post::community_id
  95             .eq(community_follower::community_id)
  96             .and(community_follower::person_id.eq(person_id_join)),
  97         ),
  98       )
  99       .left_join(
 100         comment_saved::table.on(
 101           comment::id
 102             .eq(comment_saved::comment_id)
 103             .and(comment_saved::person_id.eq(person_id_join)),
 104         ),
 105       )
 106       .left_join(
 107         person_block::table.on(
 108           comment::creator_id
 109             .eq(person_block::target_id)
 110             .and(person_block::person_id.eq(person_id_join)),
 111         ),
 112       )
 113       .left_join(
 114         comment_like::table.on(
 115           comment::id
 116             .eq(comment_like::comment_id)
 117             .and(comment_like::person_id.eq(person_id_join)),
 118         ),
 119       )
 120       .select((
 121         person_mention::all_columns,
 122         comment::all_columns,
 123         Person::safe_columns_tuple(),
 124         post::all_columns,
 125         Community::safe_columns_tuple(),
 126         person_alias_1.fields(Person::safe_columns_tuple()),
 127         comment_aggregates::all_columns,
 128         community_person_ban::all_columns.nullable(),
 129         community_follower::all_columns.nullable(),
 130         comment_saved::all_columns.nullable(),
 131         person_block::all_columns.nullable(),
 132         comment_like::score.nullable(),
 133       ))
 134       .first::<PersonMentionViewTuple>(conn)?;
 135
 136     Ok(PersonMentionView {
 137       person_mention,
 138       comment,
 139       creator,
 140       post,
 141       community,
 142       recipient,
 143       counts,
 144       creator_banned_from_community: creator_banned_from_community.is_some(),
 145       subscribed: CommunityFollower::to_subscribed_type(&follower),
 146       saved: saved.is_some(),
 147       creator_blocked: creator_blocked.is_some(),
 148       my_vote,
 149     })
 150   }
 151
 152   /// Gets the number of unread mentions
 153   pub fn get_unread_mentions(
 154     conn: &mut PgConnection,
 155     my_person_id: PersonId,
 156   ) -> Result<i64, Error> {
 157     use diesel::dsl::*;
 158
 159     person_mention::table
 160       .inner_join(comment::table)
 161       .filter(person_mention::recipient_id.eq(my_person_id))
 162       .filter(person_mention::read.eq(false))
 163       .filter(comment::deleted.eq(false))
 164       .filter(comment::removed.eq(false))
 165       .select(count(person_mention::id))
 166       .first::<i64>(conn)
 167   }
 168 }
 169
 170 #[derive(TypedBuilder)]
 171 #[builder(field_defaults(default))]
 172 pub struct PersonMentionQuery<'a> {
 173   #[builder(!default)]
 174   conn: &'a mut PgConnection,
 175   my_person_id: Option<PersonId>,
 176   recipient_id: Option<PersonId>,
 177   sort: Option<CommentSortType>,
 178   unread_only: Option<bool>,
 179   show_bot_accounts: Option<bool>,
 180   page: Option<i64>,
 181   limit: Option<i64>,
 182 }
 183
 184 impl<'a> PersonMentionQuery<'a> {
 185   pub fn list(self) -> Result<Vec<PersonMentionView>, Error> {
 186     use diesel::dsl::*;
 187
 188     let person_alias_1 = diesel::alias!(person as person1);
 189
 190     // The left join below will return None in this case
 191     let person_id_join = self.my_person_id.unwrap_or(PersonId(-1));
 192
 193     let mut query = person_mention::table
 194       .inner_join(comment::table)
 195       .inner_join(person::table.on(comment::creator_id.eq(person::id)))
 196       .inner_join(post::table.on(comment::post_id.eq(post::id)))
 197       .inner_join(community::table.on(post::community_id.eq(community::id)))
 198       .inner_join(person_alias_1)
 199       .inner_join(comment_aggregates::table.on(comment::id.eq(comment_aggregates::comment_id)))
 200       .left_join(
 201         community_person_ban::table.on(
 202           community::id
 203             .eq(community_person_ban::community_id)
 204             .and(community_person_ban::person_id.eq(comment::creator_id))
 205             .and(
 206               community_person_ban::expires
 207                 .is_null()
 208                 .or(community_person_ban::expires.gt(now)),
 209             ),
 210         ),
 211       )
 212       .left_join(
 213         community_follower::table.on(
 214           post::community_id
 215             .eq(community_follower::community_id)
 216             .and(community_follower::person_id.eq(person_id_join)),
 217         ),
 218       )
 219       .left_join(
 220         comment_saved::table.on(
 221           comment::id
 222             .eq(comment_saved::comment_id)
 223             .and(comment_saved::person_id.eq(person_id_join)),
 224         ),
 225       )
 226       .left_join(
 227         person_block::table.on(
 228           comment::creator_id
 229             .eq(person_block::target_id)
 230             .and(person_block::person_id.eq(person_id_join)),
 231         ),
 232       )
 233       .left_join(
 234         comment_like::table.on(
 235           comment::id
 236             .eq(comment_like::comment_id)
 237             .and(comment_like::person_id.eq(person_id_join)),
 238         ),
 239       )
 240       .select((
 241         person_mention::all_columns,
 242         comment::all_columns,
 243         Person::safe_columns_tuple(),
 244         post::all_columns,
 245         Community::safe_columns_tuple(),
 246         person_alias_1.fields(Person::safe_columns_tuple()),
 247         comment_aggregates::all_columns,
 248         community_person_ban::all_columns.nullable(),
 249         community_follower::all_columns.nullable(),
 250         comment_saved::all_columns.nullable(),
 251         person_block::all_columns.nullable(),
 252         comment_like::score.nullable(),
 253       ))
 254       .into_boxed();
 255
 256     if let Some(recipient_id) = self.recipient_id {
 257       query = query.filter(person_mention::recipient_id.eq(recipient_id));
 258     }
 259
 260     if self.unread_only.unwrap_or(false) {
 261       query = query.filter(person_mention::read.eq(false));
 262     }
 263
 264     if !self.show_bot_accounts.unwrap_or(true) {
 265       query = query.filter(person::bot_account.eq(false));
 266     };
 267
 268     query = match self.sort.unwrap_or(CommentSortType::Hot) {
 269       CommentSortType::Hot => query
 270         .then_order_by(hot_rank(comment_aggregates::score, comment_aggregates::published).desc())
 271         .then_order_by(comment_aggregates::published.desc()),
 272       CommentSortType::New => query.then_order_by(comment::published.desc()),
 273       CommentSortType::Old => query.then_order_by(comment::published.asc()),
 274       CommentSortType::Top => query.order_by(comment_aggregates::score.desc()),
 275     };
 276
 277     let (limit, offset) = limit_and_offset(self.page, self.limit)?;
 278
 279     let res = query
 280       .limit(limit)
 281       .offset(offset)
 282       .load::<PersonMentionViewTuple>(self.conn)?;
 283
 284     Ok(PersonMentionView::from_tuple_to_vec(res))
 285   }
 286 }
 287
 288 impl ViewToVec for PersonMentionView {
 289   type DbTuple = PersonMentionViewTuple;
 290   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
 291     items
 292       .into_iter()
 293       .map(|a| Self {
 294         person_mention: a.0,
 295         comment: a.1,
 296         creator: a.2,
 297         post: a.3,
 298         community: a.4,
 299         recipient: a.5,
 300         counts: a.6,
 301         creator_banned_from_community: a.7.is_some(),
 302         subscribed: CommunityFollower::to_subscribed_type(&a.8),
 303         saved: a.9.is_some(),
 304         creator_blocked: a.10.is_some(),
 305         my_vote: a.11,
 306       })
 307       .collect::<Vec<Self>>()
 308   }
 309 }