crates/db_queries/src/aggregates/post_aggregates.rs

   1 use diesel::{result::Error, *};
   2 use lemmy_db_schema::schema::post_aggregates;
   3 use serde::Serialize;
   4
   5 #[derive(Queryable, Associations, Identifiable, PartialEq, Debug, Serialize, Clone)]
   6 #[table_name = "post_aggregates"]
   7 pub struct PostAggregates {
   8   pub id: i32,
   9   pub post_id: i32,
  10   pub comments: i64,
  11   pub score: i64,
  12   pub upvotes: i64,
  13   pub downvotes: i64,
  14   pub stickied: bool,
  15   pub published: chrono::NaiveDateTime,
  16   pub newest_comment_time_necro: chrono::NaiveDateTime, // A newest comment time, limited to 2 days, to prevent necrobumping
  17   pub newest_comment_time: chrono::NaiveDateTime,
  18 }
  19
  20 impl PostAggregates {
  21   pub fn read(conn: &PgConnection, post_id: i32) -> Result<Self, Error> {
  22     post_aggregates::table
  23       .filter(post_aggregates::post_id.eq(post_id))
  24       .first::<Self>(conn)
  25   }
  26 }
  27
  28 #[cfg(test)]
  29 mod tests {
  30   use crate::{
  31     aggregates::post_aggregates::PostAggregates,
  32     establish_unpooled_connection,
  33     Crud,
  34   };
  35   use lemmy_db_schema::source::{
  36     comment::{Comment, CommentForm},
  37     community::{Community, CommunityForm},
  38     post::{Post, PostForm, PostLike, PostLikeForm},
  39     person::{PersonForm, Person},
  40   };
  41
  42   #[test]
  43   fn test_crud() {
  44     let conn = establish_unpooled_connection();
  45
  46     let new_person = PersonForm {
  47       name: "thommy_community_agg".into(),
  48       preferred_username: None,
  49       avatar: None,
  50       banner: None,
  51       banned: Some(false),
  52       deleted: false,
  53       published: None,
  54       updated: None,
  55       actor_id: None,
  56       bio: None,
  57       local: true,
  58       private_key: None,
  59       public_key: None,
  60       last_refreshed_at: None,
  61       inbox_url: None,
  62       shared_inbox_url: None,
  63     };
  64
  65     let inserted_person = Person::create(&conn, &new_person).unwrap();
  66
  67     let another_person = PersonForm {
  68       name: "jerry_community_agg".into(),
  69       preferred_username: None,
  70       avatar: None,
  71       banner: None,
  72       banned: Some(false),
  73       deleted: false,
  74       published: None,
  75       updated: None,
  76       actor_id: None,
  77       bio: None,
  78       local: true,
  79       private_key: None,
  80       public_key: None,
  81       last_refreshed_at: None,
  82       inbox_url: None,
  83       shared_inbox_url: None,
  84     };
  85
  86     let another_inserted_person = Person::create(&conn, &another_person).unwrap();
  87
  88     let new_community = CommunityForm {
  89       name: "TIL_community_agg".into(),
  90       creator_id: inserted_person.id,
  91       title: "nada".to_owned(),
  92       description: None,
  93       nsfw: false,
  94       removed: None,
  95       deleted: None,
  96       updated: None,
  97       actor_id: None,
  98       local: true,
  99       private_key: None,
 100       public_key: None,
 101       last_refreshed_at: None,
 102       published: None,
 103       icon: None,
 104       banner: None,
 105       followers_url: None,
 106       inbox_url: None,
 107       shared_inbox_url: None,
 108     };
 109
 110     let inserted_community = Community::create(&conn, &new_community).unwrap();
 111
 112     let new_post = PostForm {
 113       name: "A test post".into(),
 114       url: None,
 115       body: None,
 116       creator_id: inserted_person.id,
 117       community_id: inserted_community.id,
 118       removed: None,
 119       deleted: None,
 120       locked: None,
 121       stickied: None,
 122       nsfw: false,
 123       updated: None,
 124       embed_title: None,
 125       embed_description: None,
 126       embed_html: None,
 127       thumbnail_url: None,
 128       ap_id: None,
 129       local: true,
 130       published: None,
 131     };
 132
 133     let inserted_post = Post::create(&conn, &new_post).unwrap();
 134
 135     let comment_form = CommentForm {
 136       content: "A test comment".into(),
 137       creator_id: inserted_person.id,
 138       post_id: inserted_post.id,
 139       removed: None,
 140       deleted: None,
 141       read: None,
 142       parent_id: None,
 143       published: None,
 144       updated: None,
 145       ap_id: None,
 146       local: true,
 147     };
 148
 149     let inserted_comment = Comment::create(&conn, &comment_form).unwrap();
 150
 151     let child_comment_form = CommentForm {
 152       content: "A test comment".into(),
 153       creator_id: inserted_person.id,
 154       post_id: inserted_post.id,
 155       removed: None,
 156       deleted: None,
 157       read: None,
 158       parent_id: Some(inserted_comment.id),
 159       published: None,
 160       updated: None,
 161       ap_id: None,
 162       local: true,
 163     };
 164
 165     let _inserted_child_comment = Comment::create(&conn, &child_comment_form).unwrap();
 166
 167     let post_like = PostLikeForm {
 168       post_id: inserted_post.id,
 169       person_id: inserted_person.id,
 170       score: 1,
 171     };
 172
 173     PostLike::like(&conn, &post_like).unwrap();
 174
 175     let post_aggs_before_delete = PostAggregates::read(&conn, inserted_post.id).unwrap();
 176
 177     assert_eq!(2, post_aggs_before_delete.comments);
 178     assert_eq!(1, post_aggs_before_delete.score);
 179     assert_eq!(1, post_aggs_before_delete.upvotes);
 180     assert_eq!(0, post_aggs_before_delete.downvotes);
 181
 182     // Add a post dislike from the other person
 183     let post_dislike = PostLikeForm {
 184       post_id: inserted_post.id,
 185       person_id: another_inserted_person.id,
 186       score: -1,
 187     };
 188
 189     PostLike::like(&conn, &post_dislike).unwrap();
 190
 191     let post_aggs_after_dislike = PostAggregates::read(&conn, inserted_post.id).unwrap();
 192
 193     assert_eq!(2, post_aggs_after_dislike.comments);
 194     assert_eq!(0, post_aggs_after_dislike.score);
 195     assert_eq!(1, post_aggs_after_dislike.upvotes);
 196     assert_eq!(1, post_aggs_after_dislike.downvotes);
 197
 198     // Remove the parent comment
 199     Comment::delete(&conn, inserted_comment.id).unwrap();
 200     let after_comment_delete = PostAggregates::read(&conn, inserted_post.id).unwrap();
 201     assert_eq!(0, after_comment_delete.comments);
 202     assert_eq!(0, after_comment_delete.score);
 203     assert_eq!(1, after_comment_delete.upvotes);
 204     assert_eq!(1, after_comment_delete.downvotes);
 205
 206     // Remove the first post like
 207     PostLike::remove(&conn, inserted_person.id, inserted_post.id).unwrap();
 208     let after_like_remove = PostAggregates::read(&conn, inserted_post.id).unwrap();
 209     assert_eq!(0, after_like_remove.comments);
 210     assert_eq!(-1, after_like_remove.score);
 211     assert_eq!(0, after_like_remove.upvotes);
 212     assert_eq!(1, after_like_remove.downvotes);
 213
 214     // This should delete all the associated rows, and fire triggers
 215     Person::delete(&conn, another_inserted_person.id).unwrap();
 216     let person_num_deleted = Person::delete(&conn, inserted_person.id).unwrap();
 217     assert_eq!(1, person_num_deleted);
 218
 219     // Should be none found, since the creator was deleted
 220     let after_delete = PostAggregates::read(&conn, inserted_post.id);
 221     assert!(after_delete.is_err());
 222   }
 223 }