crates/db_views_actor/src/comment_reply_view.rs

   1 use crate::structs::CommentReplyView;
   2 use diesel::{
   3   dsl::*,
   4   result::Error,
   5   BoolExpressionMethods,
   6   ExpressionMethods,
   7   JoinOnDsl,
   8   NullableExpressionMethods,
   9   QueryDsl,
  10 };
  11 use diesel_async::RunQueryDsl;
  12 use lemmy_db_schema::{
  13   aggregates::structs::CommentAggregates,
  14   newtypes::{CommentReplyId, PersonId},
  15   schema::{
  16     comment,
  17     comment_aggregates,
  18     comment_like,
  19     comment_reply,
  20     comment_saved,
  21     community,
  22     community_follower,
  23     community_person_ban,
  24     person,
  25     person_block,
  26     post,
  27   },
  28   source::{
  29     comment::{Comment, CommentSaved},
  30     comment_reply::CommentReply,
  31     community::{Community, CommunityFollower, CommunityPersonBan, CommunitySafe},
  32     person::{Person, PersonSafe},
  33     person_block::PersonBlock,
  34     post::Post,
  35   },
  36   traits::{ToSafe, ViewToVec},
  37   utils::{functions::hot_rank, get_conn, limit_and_offset, DbPool},
  38   CommentSortType,
  39 };
  40 use typed_builder::TypedBuilder;
  41
  42 type CommentReplyViewTuple = (
  43   CommentReply,
  44   Comment,
  45   PersonSafe,
  46   Post,
  47   CommunitySafe,
  48   PersonSafe,
  49   CommentAggregates,
  50   Option<CommunityPersonBan>,
  51   Option<CommunityFollower>,
  52   Option<CommentSaved>,
  53   Option<PersonBlock>,
  54   Option<i16>,
  55 );
  56
  57 impl CommentReplyView {
  58   pub async fn read(
  59     pool: &DbPool,
  60     comment_reply_id: CommentReplyId,
  61     my_person_id: Option<PersonId>,
  62   ) -> Result<Self, Error> {
  63     let conn = &mut get_conn(pool).await?;
  64     let person_alias_1 = diesel::alias!(person as person1);
  65
  66     // The left join below will return None in this case
  67     let person_id_join = my_person_id.unwrap_or(PersonId(-1));
  68
  69     let (
  70       comment_reply,
  71       comment,
  72       creator,
  73       post,
  74       community,
  75       recipient,
  76       counts,
  77       creator_banned_from_community,
  78       follower,
  79       saved,
  80       creator_blocked,
  81       my_vote,
  82     ) = comment_reply::table
  83       .find(comment_reply_id)
  84       .inner_join(comment::table)
  85       .inner_join(person::table.on(comment::creator_id.eq(person::id)))
  86       .inner_join(post::table.on(comment::post_id.eq(post::id)))
  87       .inner_join(community::table.on(post::community_id.eq(community::id)))
  88       .inner_join(person_alias_1)
  89       .inner_join(comment_aggregates::table.on(comment::id.eq(comment_aggregates::comment_id)))
  90       .left_join(
  91         community_person_ban::table.on(
  92           community::id
  93             .eq(community_person_ban::community_id)
  94             .and(community_person_ban::person_id.eq(comment::creator_id))
  95             .and(
  96               community_person_ban::expires
  97                 .is_null()
  98                 .or(community_person_ban::expires.gt(now)),
  99             ),
 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         comment_reply::all_columns,
 132         comment::all_columns,
 133         Person::safe_columns_tuple(),
 134         post::all_columns,
 135         Community::safe_columns_tuple(),
 136         person_alias_1.fields(Person::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::<CommentReplyViewTuple>(conn)
 145       .await?;
 146
 147     Ok(CommentReplyView {
 148       comment_reply,
 149       comment,
 150       creator,
 151       post,
 152       community,
 153       recipient,
 154       counts,
 155       creator_banned_from_community: creator_banned_from_community.is_some(),
 156       subscribed: CommunityFollower::to_subscribed_type(&follower),
 157       saved: saved.is_some(),
 158       creator_blocked: creator_blocked.is_some(),
 159       my_vote,
 160     })
 161   }
 162
 163   /// Gets the number of unread replies
 164   pub async fn get_unread_replies(pool: &DbPool, my_person_id: PersonId) -> Result<i64, Error> {
 165     use diesel::dsl::*;
 166
 167     let conn = &mut get_conn(pool).await?;
 168
 169     comment_reply::table
 170       .inner_join(comment::table)
 171       .filter(comment_reply::recipient_id.eq(my_person_id))
 172       .filter(comment_reply::read.eq(false))
 173       .filter(comment::deleted.eq(false))
 174       .filter(comment::removed.eq(false))
 175       .select(count(comment_reply::id))
 176       .first::<i64>(conn)
 177       .await
 178   }
 179 }
 180
 181 #[derive(TypedBuilder)]
 182 #[builder(field_defaults(default))]
 183 pub struct CommentReplyQuery<'a> {
 184   #[builder(!default)]
 185   pool: &'a DbPool,
 186   my_person_id: Option<PersonId>,
 187   recipient_id: Option<PersonId>,
 188   sort: Option<CommentSortType>,
 189   unread_only: Option<bool>,
 190   show_bot_accounts: Option<bool>,
 191   page: Option<i64>,
 192   limit: Option<i64>,
 193 }
 194
 195 impl<'a> CommentReplyQuery<'a> {
 196   pub async fn list(self) -> Result<Vec<CommentReplyView>, Error> {
 197     use diesel::dsl::*;
 198     let conn = &mut get_conn(self.pool).await?;
 199
 200     let person_alias_1 = diesel::alias!(person as person1);
 201
 202     // The left join below will return None in this case
 203     let person_id_join = self.my_person_id.unwrap_or(PersonId(-1));
 204
 205     let mut query = comment_reply::table
 206       .inner_join(comment::table)
 207       .inner_join(person::table.on(comment::creator_id.eq(person::id)))
 208       .inner_join(post::table.on(comment::post_id.eq(post::id)))
 209       .inner_join(community::table.on(post::community_id.eq(community::id)))
 210       .inner_join(person_alias_1)
 211       .inner_join(comment_aggregates::table.on(comment::id.eq(comment_aggregates::comment_id)))
 212       .left_join(
 213         community_person_ban::table.on(
 214           community::id
 215             .eq(community_person_ban::community_id)
 216             .and(community_person_ban::person_id.eq(comment::creator_id))
 217             .and(
 218               community_person_ban::expires
 219                 .is_null()
 220                 .or(community_person_ban::expires.gt(now)),
 221             ),
 222         ),
 223       )
 224       .left_join(
 225         community_follower::table.on(
 226           post::community_id
 227             .eq(community_follower::community_id)
 228             .and(community_follower::person_id.eq(person_id_join)),
 229         ),
 230       )
 231       .left_join(
 232         comment_saved::table.on(
 233           comment::id
 234             .eq(comment_saved::comment_id)
 235             .and(comment_saved::person_id.eq(person_id_join)),
 236         ),
 237       )
 238       .left_join(
 239         person_block::table.on(
 240           comment::creator_id
 241             .eq(person_block::target_id)
 242             .and(person_block::person_id.eq(person_id_join)),
 243         ),
 244       )
 245       .left_join(
 246         comment_like::table.on(
 247           comment::id
 248             .eq(comment_like::comment_id)
 249             .and(comment_like::person_id.eq(person_id_join)),
 250         ),
 251       )
 252       .select((
 253         comment_reply::all_columns,
 254         comment::all_columns,
 255         Person::safe_columns_tuple(),
 256         post::all_columns,
 257         Community::safe_columns_tuple(),
 258         person_alias_1.fields(Person::safe_columns_tuple()),
 259         comment_aggregates::all_columns,
 260         community_person_ban::all_columns.nullable(),
 261         community_follower::all_columns.nullable(),
 262         comment_saved::all_columns.nullable(),
 263         person_block::all_columns.nullable(),
 264         comment_like::score.nullable(),
 265       ))
 266       .into_boxed();
 267
 268     if let Some(recipient_id) = self.recipient_id {
 269       query = query.filter(comment_reply::recipient_id.eq(recipient_id));
 270     }
 271
 272     if self.unread_only.unwrap_or(false) {
 273       query = query.filter(comment_reply::read.eq(false));
 274     }
 275
 276     if !self.show_bot_accounts.unwrap_or(true) {
 277       query = query.filter(person::bot_account.eq(false));
 278     };
 279
 280     query = match self.sort.unwrap_or(CommentSortType::Hot) {
 281       CommentSortType::Hot => query
 282         .then_order_by(hot_rank(comment_aggregates::score, comment_aggregates::published).desc())
 283         .then_order_by(comment_aggregates::published.desc()),
 284       CommentSortType::New => query.then_order_by(comment::published.desc()),
 285       CommentSortType::Old => query.then_order_by(comment::published.asc()),
 286       CommentSortType::Top => query.order_by(comment_aggregates::score.desc()),
 287     };
 288
 289     let (limit, offset) = limit_and_offset(self.page, self.limit)?;
 290
 291     let res = query
 292       .limit(limit)
 293       .offset(offset)
 294       .load::<CommentReplyViewTuple>(conn)
 295       .await?;
 296
 297     Ok(CommentReplyView::from_tuple_to_vec(res))
 298   }
 299 }
 300
 301 impl ViewToVec for CommentReplyView {
 302   type DbTuple = CommentReplyViewTuple;
 303   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
 304     items
 305       .into_iter()
 306       .map(|a| Self {
 307         comment_reply: a.0,
 308         comment: a.1,
 309         creator: a.2,
 310         post: a.3,
 311         community: a.4,
 312         recipient: a.5,
 313         counts: a.6,
 314         creator_banned_from_community: a.7.is_some(),
 315         subscribed: CommunityFollower::to_subscribed_type(&a.8),
 316         saved: a.9.is_some(),
 317         creator_blocked: a.10.is_some(),
 318         my_vote: a.11,
 319       })
 320       .collect::<Vec<Self>>()
 321   }
 322 }