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: &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: &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: &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(pool: &DbPool, object_id: Url) -> Result<Option<Self>, Error> {
 127     let conn = &mut get_conn(pool).await?;
 128     let object_id: DbUrl = object_id.into();
 129     Ok(
 130       comment
 131         .filter(ap_id.eq(object_id))
 132         .first::<Comment>(conn)
 133         .await
 134         .ok()
 135         .map(Into::into),
 136     )
 137   }
 138
 139   pub fn parent_comment_id(&self) -> Option<CommentId> {
 140     let mut ltree_split: Vec<&str> = self.path.0.split('.').collect();
 141     ltree_split.remove(0); // The first is always 0
 142     if ltree_split.len() > 1 {
 143       let parent_comment_id = ltree_split.get(ltree_split.len() - 2);
 144       parent_comment_id.and_then(|p| p.parse::<i32>().map(CommentId).ok())
 145     } else {
 146       None
 147     }
 148   }
 149 }
 150
 151 #[async_trait]
 152 impl Crud for Comment {
 153   type InsertForm = CommentInsertForm;
 154   type UpdateForm = CommentUpdateForm;
 155   type IdType = CommentId;
 156   async fn read(pool: &DbPool, comment_id: CommentId) -> Result<Self, Error> {
 157     let conn = &mut get_conn(pool).await?;
 158     comment.find(comment_id).first::<Self>(conn).await
 159   }
 160
 161   async fn delete(pool: &DbPool, comment_id: CommentId) -> Result<usize, Error> {
 162     let conn = &mut get_conn(pool).await?;
 163     diesel::delete(comment.find(comment_id)).execute(conn).await
 164   }
 165
 166   /// This is unimplemented, use [[Comment::create]]
 167   async fn create(_pool: &DbPool, _comment_form: &Self::InsertForm) -> Result<Self, Error> {
 168     unimplemented!();
 169   }
 170
 171   async fn update(
 172     pool: &DbPool,
 173     comment_id: CommentId,
 174     comment_form: &Self::UpdateForm,
 175   ) -> Result<Self, Error> {
 176     let conn = &mut get_conn(pool).await?;
 177     diesel::update(comment.find(comment_id))
 178       .set(comment_form)
 179       .get_result::<Self>(conn)
 180       .await
 181   }
 182 }
 183
 184 #[async_trait]
 185 impl Likeable for CommentLike {
 186   type Form = CommentLikeForm;
 187   type IdType = CommentId;
 188   async fn like(pool: &DbPool, comment_like_form: &CommentLikeForm) -> Result<Self, Error> {
 189     use crate::schema::comment_like::dsl::{comment_id, comment_like, person_id};
 190     let conn = &mut get_conn(pool).await?;
 191     insert_into(comment_like)
 192       .values(comment_like_form)
 193       .on_conflict((comment_id, person_id))
 194       .do_update()
 195       .set(comment_like_form)
 196       .get_result::<Self>(conn)
 197       .await
 198   }
 199   async fn remove(
 200     pool: &DbPool,
 201     person_id_: PersonId,
 202     comment_id_: CommentId,
 203   ) -> Result<usize, Error> {
 204     use crate::schema::comment_like::dsl::{comment_id, comment_like, person_id};
 205     let conn = &mut get_conn(pool).await?;
 206     diesel::delete(
 207       comment_like
 208         .filter(comment_id.eq(comment_id_))
 209         .filter(person_id.eq(person_id_)),
 210     )
 211     .execute(conn)
 212     .await
 213   }
 214 }
 215
 216 #[async_trait]
 217 impl Saveable for CommentSaved {
 218   type Form = CommentSavedForm;
 219   async fn save(pool: &DbPool, comment_saved_form: &CommentSavedForm) -> Result<Self, Error> {
 220     use crate::schema::comment_saved::dsl::{comment_id, comment_saved, person_id};
 221     let conn = &mut get_conn(pool).await?;
 222     insert_into(comment_saved)
 223       .values(comment_saved_form)
 224       .on_conflict((comment_id, person_id))
 225       .do_update()
 226       .set(comment_saved_form)
 227       .get_result::<Self>(conn)
 228       .await
 229   }
 230   async fn unsave(pool: &DbPool, comment_saved_form: &CommentSavedForm) -> Result<usize, Error> {
 231     use crate::schema::comment_saved::dsl::{comment_id, comment_saved, person_id};
 232     let conn = &mut get_conn(pool).await?;
 233     diesel::delete(
 234       comment_saved
 235         .filter(comment_id.eq(comment_saved_form.comment_id))
 236         .filter(person_id.eq(comment_saved_form.person_id)),
 237     )
 238     .execute(conn)
 239     .await
 240   }
 241 }
 242
 243 #[cfg(test)]
 244 mod tests {
 245   use crate::{
 246     newtypes::LanguageId,
 247     source::{
 248       comment::{
 249         Comment,
 250         CommentInsertForm,
 251         CommentLike,
 252         CommentLikeForm,
 253         CommentSaved,
 254         CommentSavedForm,
 255         CommentUpdateForm,
 256       },
 257       community::{Community, CommunityInsertForm},
 258       instance::Instance,
 259       person::{Person, PersonInsertForm},
 260       post::{Post, PostInsertForm},
 261     },
 262     traits::{Crud, Likeable, Saveable},
 263     utils::build_db_pool_for_tests,
 264   };
 265   use diesel_ltree::Ltree;
 266   use serial_test::serial;
 267
 268   #[tokio::test]
 269   #[serial]
 270   async fn test_crud() {
 271     let pool = &build_db_pool_for_tests().await;
 272
 273     let inserted_instance = Instance::read_or_create(pool, "my_domain.tld".to_string())
 274       .await
 275       .unwrap();
 276
 277     let new_person = PersonInsertForm::builder()
 278       .name("terry".into())
 279       .public_key("pubkey".to_string())
 280       .instance_id(inserted_instance.id)
 281       .build();
 282
 283     let inserted_person = Person::create(pool, &new_person).await.unwrap();
 284
 285     let new_community = CommunityInsertForm::builder()
 286       .name("test community".to_string())
 287       .title("nada".to_owned())
 288       .public_key("pubkey".to_string())
 289       .instance_id(inserted_instance.id)
 290       .build();
 291
 292     let inserted_community = Community::create(pool, &new_community).await.unwrap();
 293
 294     let new_post = PostInsertForm::builder()
 295       .name("A test post".into())
 296       .creator_id(inserted_person.id)
 297       .community_id(inserted_community.id)
 298       .build();
 299
 300     let inserted_post = Post::create(pool, &new_post).await.unwrap();
 301
 302     let comment_form = CommentInsertForm::builder()
 303       .content("A test comment".into())
 304       .creator_id(inserted_person.id)
 305       .post_id(inserted_post.id)
 306       .build();
 307
 308     let inserted_comment = Comment::create(pool, &comment_form, None).await.unwrap();
 309
 310     let expected_comment = Comment {
 311       id: inserted_comment.id,
 312       content: "A test comment".into(),
 313       creator_id: inserted_person.id,
 314       post_id: inserted_post.id,
 315       removed: false,
 316       deleted: false,
 317       path: Ltree(format!("0.{}", inserted_comment.id)),
 318       published: inserted_comment.published,
 319       updated: None,
 320       ap_id: inserted_comment.ap_id.clone(),
 321       distinguished: false,
 322       local: true,
 323       language_id: LanguageId::default(),
 324     };
 325
 326     let child_comment_form = CommentInsertForm::builder()
 327       .content("A child comment".into())
 328       .creator_id(inserted_person.id)
 329       .post_id(inserted_post.id)
 330       .build();
 331
 332     let inserted_child_comment =
 333       Comment::create(pool, &child_comment_form, Some(&inserted_comment.path))
 334         .await
 335         .unwrap();
 336
 337     // Comment Like
 338     let comment_like_form = CommentLikeForm {
 339       comment_id: inserted_comment.id,
 340       post_id: inserted_post.id,
 341       person_id: inserted_person.id,
 342       score: 1,
 343     };
 344
 345     let inserted_comment_like = CommentLike::like(pool, &comment_like_form).await.unwrap();
 346
 347     let expected_comment_like = CommentLike {
 348       id: inserted_comment_like.id,
 349       comment_id: inserted_comment.id,
 350       post_id: inserted_post.id,
 351       person_id: inserted_person.id,
 352       published: inserted_comment_like.published,
 353       score: 1,
 354     };
 355
 356     // Comment Saved
 357     let comment_saved_form = CommentSavedForm {
 358       comment_id: inserted_comment.id,
 359       person_id: inserted_person.id,
 360     };
 361
 362     let inserted_comment_saved = CommentSaved::save(pool, &comment_saved_form).await.unwrap();
 363
 364     let expected_comment_saved = CommentSaved {
 365       id: inserted_comment_saved.id,
 366       comment_id: inserted_comment.id,
 367       person_id: inserted_person.id,
 368       published: inserted_comment_saved.published,
 369     };
 370
 371     let comment_update_form = CommentUpdateForm::builder()
 372       .content(Some("A test comment".into()))
 373       .build();
 374
 375     let updated_comment = Comment::update(pool, inserted_comment.id, &comment_update_form)
 376       .await
 377       .unwrap();
 378
 379     let read_comment = Comment::read(pool, inserted_comment.id).await.unwrap();
 380     let like_removed = CommentLike::remove(pool, inserted_person.id, inserted_comment.id)
 381       .await
 382       .unwrap();
 383     let saved_removed = CommentSaved::unsave(pool, &comment_saved_form)
 384       .await
 385       .unwrap();
 386     let num_deleted = Comment::delete(pool, inserted_comment.id).await.unwrap();
 387     Comment::delete(pool, inserted_child_comment.id)
 388       .await
 389       .unwrap();
 390     Post::delete(pool, inserted_post.id).await.unwrap();
 391     Community::delete(pool, inserted_community.id)
 392       .await
 393       .unwrap();
 394     Person::delete(pool, inserted_person.id).await.unwrap();
 395     Instance::delete(pool, inserted_instance.id).await.unwrap();
 396
 397     assert_eq!(expected_comment, read_comment);
 398     assert_eq!(expected_comment, inserted_comment);
 399     assert_eq!(expected_comment, updated_comment);
 400     assert_eq!(expected_comment_like, inserted_comment_like);
 401     assert_eq!(expected_comment_saved, inserted_comment_saved);
 402     assert_eq!(
 403       format!("0.{}.{}", expected_comment.id, inserted_child_comment.id),
 404       inserted_child_comment.path.0,
 405     );
 406     assert_eq!(1, like_removed);
 407     assert_eq!(1, saved_removed);
 408     assert_eq!(1, num_deleted);
 409   }
 410 }