crates/db_schema/src/impls/comment.rs

   1 use crate::{
   2   newtypes::{CommentId, DbUrl, PersonId},
   3   schema::comment::dsl::{ap_id, comment, content, creator_id, deleted, path, removed, updated},
   4   source::comment::{
   5     Comment,
   6     CommentInsertForm,
   7     CommentLike,
   8     CommentLikeForm,
   9     CommentSaved,
  10     CommentSavedForm,
  11     CommentUpdateForm,
  12   },
  13   traits::{Crud, Likeable, Saveable},
  14   utils::{get_conn, naive_now, DbPool, DELETED_REPLACEMENT_TEXT},
  15 };
  16 use diesel::{
  17   dsl::{insert_into, sql_query},
  18   result::Error,
  19   ExpressionMethods,
  20   QueryDsl,
  21 };
  22 use diesel_async::RunQueryDsl;
  23 use diesel_ltree::Ltree;
  24 use url::Url;
  25
  26 impl Comment {
  27   pub async fn permadelete_for_creator(
  28     pool: &mut DbPool<'_>,
  29     for_creator_id: PersonId,
  30   ) -> Result<Vec<Self>, Error> {
  31     let conn = &mut get_conn(pool).await?;
  32
  33     diesel::update(comment.filter(creator_id.eq(for_creator_id)))
  34       .set((
  35         content.eq(DELETED_REPLACEMENT_TEXT),
  36         deleted.eq(true),
  37         updated.eq(naive_now()),
  38       ))
  39       .get_results::<Self>(conn)
  40       .await
  41   }
  42
  43   pub async fn update_removed_for_creator(
  44     pool: &mut DbPool<'_>,
  45     for_creator_id: PersonId,
  46     new_removed: bool,
  47   ) -> Result<Vec<Self>, Error> {
  48     let conn = &mut get_conn(pool).await?;
  49     diesel::update(comment.filter(creator_id.eq(for_creator_id)))
  50       .set((removed.eq(new_removed), updated.eq(naive_now())))
  51       .get_results::<Self>(conn)
  52       .await
  53   }
  54
  55   pub async fn create(
  56     pool: &mut DbPool<'_>,
  57     comment_form: &CommentInsertForm,
  58     parent_path: Option<&Ltree>,
  59   ) -> Result<Comment, Error> {
  60     let conn = &mut get_conn(pool).await?;
  61
  62     // Insert, to get the id
  63     let inserted_comment = insert_into(comment)
  64       .values(comment_form)
  65       .on_conflict(ap_id)
  66       .do_update()
  67       .set(comment_form)
  68       .get_result::<Self>(conn)
  69       .await;
  70
  71     if let Ok(comment_insert) = inserted_comment {
  72       let comment_id = comment_insert.id;
  73
  74       // You need to update the ltree column
  75       let ltree = Ltree(if let Some(parent_path) = parent_path {
  76         // The previous parent will already have 0 in it
  77         // Append this comment id
  78         format!("{}.{}", parent_path.0, comment_id)
  79       } else {
  80         // '0' is always the first path, append to that
  81         format!("{}.{}", 0, comment_id)
  82       });
  83
  84       let updated_comment = diesel::update(comment.find(comment_id))
  85         .set(path.eq(ltree))
  86         .get_result::<Self>(conn)
  87         .await;
  88
  89       // Update the child count for the parent comment_aggregates
  90       // You could do this with a trigger, but since you have to do this manually anyway,
  91       // you can just have it here
  92       if let Some(parent_path) = parent_path {
  93         // You have to update counts for all parents, not just the immediate one
  94         // TODO if the performance of this is terrible, it might be better to do this as part of a
  95         // scheduled query... although the counts would often be wrong.
  96         //
  97         // The child_count query for reference:
  98         // select c.id, c.path, count(c2.id) as child_count from comment c
  99         // left join comment c2 on c2.path <@ c.path and c2.path != c.path
 100         // group by c.id
 101
 102         let parent_id = parent_path.0.split('.').nth(1);
 103
 104         if let Some(parent_id) = parent_id {
 105           let top_parent = format!("0.{}", parent_id);
 106           let update_child_count_stmt = format!(
 107             "
 108 update comment_aggregates ca set child_count = c.child_count
 109 from (
 110   select c.id, c.path, count(c2.id) as child_count from comment c
 111   join comment c2 on c2.path <@ c.path and c2.path != c.path
 112   and c.path <@ '{top_parent}'
 113   group by c.id
 114 ) as c
 115 where ca.comment_id = c.id"
 116           );
 117
 118           sql_query(update_child_count_stmt).execute(conn).await?;
 119         }
 120       }
 121       updated_comment
 122     } else {
 123       inserted_comment
 124     }
 125   }
 126   pub async fn read_from_apub_id(
 127     pool: &mut DbPool<'_>,
 128     object_id: Url,
 129   ) -> Result<Option<Self>, Error> {
 130     let conn = &mut get_conn(pool).await?;
 131     let object_id: DbUrl = object_id.into();
 132     Ok(
 133       comment
 134         .filter(ap_id.eq(object_id))
 135         .first::<Comment>(conn)
 136         .await
 137         .ok()
 138         .map(Into::into),
 139     )
 140   }
 141
 142   pub fn parent_comment_id(&self) -> Option<CommentId> {
 143     let mut ltree_split: Vec<&str> = self.path.0.split('.').collect();
 144     ltree_split.remove(0); // The first is always 0
 145     if ltree_split.len() > 1 {
 146       let parent_comment_id = ltree_split.get(ltree_split.len() - 2);
 147       parent_comment_id.and_then(|p| p.parse::<i32>().map(CommentId).ok())
 148     } else {
 149       None
 150     }
 151   }
 152 }
 153
 154 #[async_trait]
 155 impl Crud for Comment {
 156   type InsertForm = CommentInsertForm;
 157   type UpdateForm = CommentUpdateForm;
 158   type IdType = CommentId;
 159   async fn read(pool: &mut DbPool<'_>, comment_id: CommentId) -> Result<Self, Error> {
 160     let conn = &mut get_conn(pool).await?;
 161     comment.find(comment_id).first::<Self>(conn).await
 162   }
 163
 164   async fn delete(pool: &mut DbPool<'_>, comment_id: CommentId) -> Result<usize, Error> {
 165     let conn = &mut get_conn(pool).await?;
 166     diesel::delete(comment.find(comment_id)).execute(conn).await
 167   }
 168
 169   /// This is unimplemented, use [[Comment::create]]
 170   async fn create(_pool: &mut DbPool<'_>, _comment_form: &Self::InsertForm) -> Result<Self, Error> {
 171     unimplemented!();
 172   }
 173
 174   async fn update(
 175     pool: &mut DbPool<'_>,
 176     comment_id: CommentId,
 177     comment_form: &Self::UpdateForm,
 178   ) -> Result<Self, Error> {
 179     let conn = &mut get_conn(pool).await?;
 180     diesel::update(comment.find(comment_id))
 181       .set(comment_form)
 182       .get_result::<Self>(conn)
 183       .await
 184   }
 185 }
 186
 187 #[async_trait]
 188 impl Likeable for CommentLike {
 189   type Form = CommentLikeForm;
 190   type IdType = CommentId;
 191   async fn like(pool: &mut DbPool<'_>, comment_like_form: &CommentLikeForm) -> Result<Self, Error> {
 192     use crate::schema::comment_like::dsl::{comment_id, comment_like, person_id};
 193     let conn = &mut get_conn(pool).await?;
 194     insert_into(comment_like)
 195       .values(comment_like_form)
 196       .on_conflict((comment_id, person_id))
 197       .do_update()
 198       .set(comment_like_form)
 199       .get_result::<Self>(conn)
 200       .await
 201   }
 202   async fn remove(
 203     pool: &mut DbPool<'_>,
 204     person_id_: PersonId,
 205     comment_id_: CommentId,
 206   ) -> Result<usize, Error> {
 207     use crate::schema::comment_like::dsl::{comment_id, comment_like, person_id};
 208     let conn = &mut get_conn(pool).await?;
 209     diesel::delete(
 210       comment_like
 211         .filter(comment_id.eq(comment_id_))
 212         .filter(person_id.eq(person_id_)),
 213     )
 214     .execute(conn)
 215     .await
 216   }
 217 }
 218
 219 #[async_trait]
 220 impl Saveable for CommentSaved {
 221   type Form = CommentSavedForm;
 222   async fn save(
 223     pool: &mut DbPool<'_>,
 224     comment_saved_form: &CommentSavedForm,
 225   ) -> Result<Self, Error> {
 226     use crate::schema::comment_saved::dsl::{comment_id, comment_saved, person_id};
 227     let conn = &mut get_conn(pool).await?;
 228     insert_into(comment_saved)
 229       .values(comment_saved_form)
 230       .on_conflict((comment_id, person_id))
 231       .do_update()
 232       .set(comment_saved_form)
 233       .get_result::<Self>(conn)
 234       .await
 235   }
 236   async fn unsave(
 237     pool: &mut DbPool<'_>,
 238     comment_saved_form: &CommentSavedForm,
 239   ) -> Result<usize, Error> {
 240     use crate::schema::comment_saved::dsl::{comment_id, comment_saved, person_id};
 241     let conn = &mut get_conn(pool).await?;
 242     diesel::delete(
 243       comment_saved
 244         .filter(comment_id.eq(comment_saved_form.comment_id))
 245         .filter(person_id.eq(comment_saved_form.person_id)),
 246     )
 247     .execute(conn)
 248     .await
 249   }
 250 }
 251
 252 #[cfg(test)]
 253 mod tests {
 254   use crate::{
 255     newtypes::LanguageId,
 256     source::{
 257       comment::{
 258         Comment,
 259         CommentInsertForm,
 260         CommentLike,
 261         CommentLikeForm,
 262         CommentSaved,
 263         CommentSavedForm,
 264         CommentUpdateForm,
 265       },
 266       community::{Community, CommunityInsertForm},
 267       instance::Instance,
 268       person::{Person, PersonInsertForm},
 269       post::{Post, PostInsertForm},
 270     },
 271     traits::{Crud, Likeable, Saveable},
 272     utils::build_db_pool_for_tests,
 273   };
 274   use diesel_ltree::Ltree;
 275   use serial_test::serial;
 276
 277   #[tokio::test]
 278   #[serial]
 279   async fn test_crud() {
 280     let pool = &build_db_pool_for_tests().await;
 281     let pool = &mut pool.into();
 282
 283     let inserted_instance = Instance::read_or_create(pool, "my_domain.tld".to_string())
 284       .await
 285       .unwrap();
 286
 287     let new_person = PersonInsertForm::builder()
 288       .name("terry".into())
 289       .public_key("pubkey".to_string())
 290       .instance_id(inserted_instance.id)
 291       .build();
 292
 293     let inserted_person = Person::create(pool, &new_person).await.unwrap();
 294
 295     let new_community = CommunityInsertForm::builder()
 296       .name("test community".to_string())
 297       .title("nada".to_owned())
 298       .public_key("pubkey".to_string())
 299       .instance_id(inserted_instance.id)
 300       .build();
 301
 302     let inserted_community = Community::create(pool, &new_community).await.unwrap();
 303
 304     let new_post = PostInsertForm::builder()
 305       .name("A test post".into())
 306       .creator_id(inserted_person.id)
 307       .community_id(inserted_community.id)
 308       .build();
 309
 310     let inserted_post = Post::create(pool, &new_post).await.unwrap();
 311
 312     let comment_form = CommentInsertForm::builder()
 313       .content("A test comment".into())
 314       .creator_id(inserted_person.id)
 315       .post_id(inserted_post.id)
 316       .build();
 317
 318     let inserted_comment = Comment::create(pool, &comment_form, None).await.unwrap();
 319
 320     let expected_comment = Comment {
 321       id: inserted_comment.id,
 322       content: "A test comment".into(),
 323       creator_id: inserted_person.id,
 324       post_id: inserted_post.id,
 325       removed: false,
 326       deleted: false,
 327       path: Ltree(format!("0.{}", inserted_comment.id)),
 328       published: inserted_comment.published,
 329       updated: None,
 330       ap_id: inserted_comment.ap_id.clone(),
 331       distinguished: false,
 332       local: true,
 333       language_id: LanguageId::default(),
 334     };
 335
 336     let child_comment_form = CommentInsertForm::builder()
 337       .content("A child comment".into())
 338       .creator_id(inserted_person.id)
 339       .post_id(inserted_post.id)
 340       .build();
 341
 342     let inserted_child_comment =
 343       Comment::create(pool, &child_comment_form, Some(&inserted_comment.path))
 344         .await
 345         .unwrap();
 346
 347     // Comment Like
 348     let comment_like_form = CommentLikeForm {
 349       comment_id: inserted_comment.id,
 350       post_id: inserted_post.id,
 351       person_id: inserted_person.id,
 352       score: 1,
 353     };
 354
 355     let inserted_comment_like = CommentLike::like(pool, &comment_like_form).await.unwrap();
 356
 357     let expected_comment_like = CommentLike {
 358       id: inserted_comment_like.id,
 359       comment_id: inserted_comment.id,
 360       post_id: inserted_post.id,
 361       person_id: inserted_person.id,
 362       published: inserted_comment_like.published,
 363       score: 1,
 364     };
 365
 366     // Comment Saved
 367     let comment_saved_form = CommentSavedForm {
 368       comment_id: inserted_comment.id,
 369       person_id: inserted_person.id,
 370     };
 371
 372     let inserted_comment_saved = CommentSaved::save(pool, &comment_saved_form).await.unwrap();
 373
 374     let expected_comment_saved = CommentSaved {
 375       id: inserted_comment_saved.id,
 376       comment_id: inserted_comment.id,
 377       person_id: inserted_person.id,
 378       published: inserted_comment_saved.published,
 379     };
 380
 381     let comment_update_form = CommentUpdateForm::builder()
 382       .content(Some("A test comment".into()))
 383       .build();
 384
 385     let updated_comment = Comment::update(pool, inserted_comment.id, &comment_update_form)
 386       .await
 387       .unwrap();
 388
 389     let read_comment = Comment::read(pool, inserted_comment.id).await.unwrap();
 390     let like_removed = CommentLike::remove(pool, inserted_person.id, inserted_comment.id)
 391       .await
 392       .unwrap();
 393     let saved_removed = CommentSaved::unsave(pool, &comment_saved_form)
 394       .await
 395       .unwrap();
 396     let num_deleted = Comment::delete(pool, inserted_comment.id).await.unwrap();
 397     Comment::delete(pool, inserted_child_comment.id)
 398       .await
 399       .unwrap();
 400     Post::delete(pool, inserted_post.id).await.unwrap();
 401     Community::delete(pool, inserted_community.id)
 402       .await
 403       .unwrap();
 404     Person::delete(pool, inserted_person.id).await.unwrap();
 405     Instance::delete(pool, inserted_instance.id).await.unwrap();
 406
 407     assert_eq!(expected_comment, read_comment);
 408     assert_eq!(expected_comment, inserted_comment);
 409     assert_eq!(expected_comment, updated_comment);
 410     assert_eq!(expected_comment_like, inserted_comment_like);
 411     assert_eq!(expected_comment_saved, inserted_comment_saved);
 412     assert_eq!(
 413       format!("0.{}.{}", expected_comment.id, inserted_child_comment.id),
 414       inserted_child_comment.path.0,
 415     );
 416     assert_eq!(1, like_removed);
 417     assert_eq!(1, saved_removed);
 418     assert_eq!(1, num_deleted);
 419   }
 420 }