crates/db_views_actor/src/comment_reply_view.rs

   1 use crate::structs::CommentReplyView;
   2 use diesel::{dsl::*, result::Error, *};
   3 use lemmy_db_schema::{
   4   aggregates::structs::CommentAggregates,
   5   newtypes::{CommentReplyId, PersonId},
   6   schema::{
   7     comment,
   8     comment_aggregates,
   9     comment_like,
  10     comment_reply,
  11     comment_saved,
  12     community,
  13     community_follower,
  14     community_person_ban,
  15     person,
  16     person_block,
  17     post,
  18   },
  19   source::{
  20     comment::{Comment, CommentSaved},
  21     comment_reply::CommentReply,
  22     community::{Community, CommunityFollower, CommunityPersonBan, CommunitySafe},
  23     person::{Person, PersonSafe},
  24     person_block::PersonBlock,
  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 CommentReplyViewTuple = (
  34   CommentReply,
  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 CommentReplyView {
  49   pub fn read(
  50     conn: &mut PgConnection,
  51     comment_reply_id: CommentReplyId,
  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       comment_reply,
  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     ) = comment_reply::table
  73       .find(comment_reply_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         comment_reply::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::<CommentReplyViewTuple>(conn)?;
 135
 136     Ok(CommentReplyView {
 137       comment_reply,
 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 replies
 153   pub fn get_unread_replies(conn: &mut PgConnection, my_person_id: PersonId) -> Result<i64, Error> {
 154     use diesel::dsl::*;
 155
 156     comment_reply::table
 157       .filter(comment_reply::recipient_id.eq(my_person_id))
 158       .filter(comment_reply::read.eq(false))
 159       .select(count(comment_reply::id))
 160       .first::<i64>(conn)
 161   }
 162 }
 163
 164 #[derive(TypedBuilder)]
 165 #[builder(field_defaults(default))]
 166 pub struct CommentReplyQuery<'a> {
 167   #[builder(!default)]
 168   conn: &'a mut PgConnection,
 169   my_person_id: Option<PersonId>,
 170   recipient_id: Option<PersonId>,
 171   sort: Option<CommentSortType>,
 172   unread_only: Option<bool>,
 173   show_bot_accounts: Option<bool>,
 174   page: Option<i64>,
 175   limit: Option<i64>,
 176 }
 177
 178 impl<'a> CommentReplyQuery<'a> {
 179   pub fn list(self) -> Result<Vec<CommentReplyView>, Error> {
 180     use diesel::dsl::*;
 181
 182     let person_alias_1 = diesel::alias!(person as person1);
 183
 184     // The left join below will return None in this case
 185     let person_id_join = self.my_person_id.unwrap_or(PersonId(-1));
 186
 187     let mut query = comment_reply::table
 188       .inner_join(comment::table)
 189       .inner_join(person::table.on(comment::creator_id.eq(person::id)))
 190       .inner_join(post::table.on(comment::post_id.eq(post::id)))
 191       .inner_join(community::table.on(post::community_id.eq(community::id)))
 192       .inner_join(person_alias_1)
 193       .inner_join(comment_aggregates::table.on(comment::id.eq(comment_aggregates::comment_id)))
 194       .left_join(
 195         community_person_ban::table.on(
 196           community::id
 197             .eq(community_person_ban::community_id)
 198             .and(community_person_ban::person_id.eq(comment::creator_id))
 199             .and(
 200               community_person_ban::expires
 201                 .is_null()
 202                 .or(community_person_ban::expires.gt(now)),
 203             ),
 204         ),
 205       )
 206       .left_join(
 207         community_follower::table.on(
 208           post::community_id
 209             .eq(community_follower::community_id)
 210             .and(community_follower::person_id.eq(person_id_join)),
 211         ),
 212       )
 213       .left_join(
 214         comment_saved::table.on(
 215           comment::id
 216             .eq(comment_saved::comment_id)
 217             .and(comment_saved::person_id.eq(person_id_join)),
 218         ),
 219       )
 220       .left_join(
 221         person_block::table.on(
 222           comment::creator_id
 223             .eq(person_block::target_id)
 224             .and(person_block::person_id.eq(person_id_join)),
 225         ),
 226       )
 227       .left_join(
 228         comment_like::table.on(
 229           comment::id
 230             .eq(comment_like::comment_id)
 231             .and(comment_like::person_id.eq(person_id_join)),
 232         ),
 233       )
 234       .select((
 235         comment_reply::all_columns,
 236         comment::all_columns,
 237         Person::safe_columns_tuple(),
 238         post::all_columns,
 239         Community::safe_columns_tuple(),
 240         person_alias_1.fields(Person::safe_columns_tuple()),
 241         comment_aggregates::all_columns,
 242         community_person_ban::all_columns.nullable(),
 243         community_follower::all_columns.nullable(),
 244         comment_saved::all_columns.nullable(),
 245         person_block::all_columns.nullable(),
 246         comment_like::score.nullable(),
 247       ))
 248       .into_boxed();
 249
 250     if let Some(recipient_id) = self.recipient_id {
 251       query = query.filter(comment_reply::recipient_id.eq(recipient_id));
 252     }
 253
 254     if self.unread_only.unwrap_or(false) {
 255       query = query.filter(comment_reply::read.eq(false));
 256     }
 257
 258     if !self.show_bot_accounts.unwrap_or(true) {
 259       query = query.filter(person::bot_account.eq(false));
 260     };
 261
 262     query = match self.sort.unwrap_or(CommentSortType::Hot) {
 263       CommentSortType::Hot => query
 264         .then_order_by(hot_rank(comment_aggregates::score, comment_aggregates::published).desc())
 265         .then_order_by(comment_aggregates::published.desc()),
 266       CommentSortType::New => query.then_order_by(comment::published.desc()),
 267       CommentSortType::Old => query.then_order_by(comment::published.asc()),
 268       CommentSortType::Top => query.order_by(comment_aggregates::score.desc()),
 269     };
 270
 271     let (limit, offset) = limit_and_offset(self.page, self.limit)?;
 272
 273     let res = query
 274       .limit(limit)
 275       .offset(offset)
 276       .load::<CommentReplyViewTuple>(self.conn)?;
 277
 278     Ok(CommentReplyView::from_tuple_to_vec(res))
 279   }
 280 }
 281
 282 impl ViewToVec for CommentReplyView {
 283   type DbTuple = CommentReplyViewTuple;
 284   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
 285     items
 286       .into_iter()
 287       .map(|a| Self {
 288         comment_reply: a.0,
 289         comment: a.1,
 290         creator: a.2,
 291         post: a.3,
 292         community: a.4,
 293         recipient: a.5,
 294         counts: a.6,
 295         creator_banned_from_community: a.7.is_some(),
 296         subscribed: CommunityFollower::to_subscribed_type(&a.8),
 297         saved: a.9.is_some(),
 298         creator_blocked: a.10.is_some(),
 299         my_vote: a.11,
 300       })
 301       .collect::<Vec<Self>>()
 302   }
 303 }