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
 160   /// This is unimplemented, use [[Comment::create]]
 161   async fn create(_pool: &mut DbPool<'_>, _comment_form: &Self::InsertForm) -> Result<Self, Error> {
 162     unimplemented!();
 163   }
 164
 165   async fn update(
 166     pool: &mut DbPool<'_>,
 167     comment_id: CommentId,
 168     comment_form: &Self::UpdateForm,
 169   ) -> Result<Self, Error> {
 170     let conn = &mut get_conn(pool).await?;
 171     diesel::update(comment.find(comment_id))
 172       .set(comment_form)
 173       .get_result::<Self>(conn)
 174       .await
 175   }
 176 }
 177
 178 #[async_trait]
 179 impl Likeable for CommentLike {
 180   type Form = CommentLikeForm;
 181   type IdType = CommentId;
 182   async fn like(pool: &mut DbPool<'_>, comment_like_form: &CommentLikeForm) -> Result<Self, Error> {
 183     use crate::schema::comment_like::dsl::{comment_id, comment_like, person_id};
 184     let conn = &mut get_conn(pool).await?;
 185     insert_into(comment_like)
 186       .values(comment_like_form)
 187       .on_conflict((comment_id, person_id))
 188       .do_update()
 189       .set(comment_like_form)
 190       .get_result::<Self>(conn)
 191       .await
 192   }
 193   async fn remove(
 194     pool: &mut DbPool<'_>,
 195     person_id_: PersonId,
 196     comment_id_: CommentId,
 197   ) -> Result<usize, Error> {
 198     use crate::schema::comment_like::dsl::{comment_id, comment_like, person_id};
 199     let conn = &mut get_conn(pool).await?;
 200     diesel::delete(
 201       comment_like
 202         .filter(comment_id.eq(comment_id_))
 203         .filter(person_id.eq(person_id_)),
 204     )
 205     .execute(conn)
 206     .await
 207   }
 208 }
 209
 210 #[async_trait]
 211 impl Saveable for CommentSaved {
 212   type Form = CommentSavedForm;
 213   async fn save(
 214     pool: &mut DbPool<'_>,
 215     comment_saved_form: &CommentSavedForm,
 216   ) -> Result<Self, Error> {
 217     use crate::schema::comment_saved::dsl::{comment_id, comment_saved, person_id};
 218     let conn = &mut get_conn(pool).await?;
 219     insert_into(comment_saved)
 220       .values(comment_saved_form)
 221       .on_conflict((comment_id, person_id))
 222       .do_update()
 223       .set(comment_saved_form)
 224       .get_result::<Self>(conn)
 225       .await
 226   }
 227   async fn unsave(
 228     pool: &mut DbPool<'_>,
 229     comment_saved_form: &CommentSavedForm,
 230   ) -> 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   #![allow(clippy::unwrap_used)]
 246   #![allow(clippy::indexing_slicing)]
 247
 248   use crate::{
 249     newtypes::LanguageId,
 250     source::{
 251       comment::{
 252         Comment,
 253         CommentInsertForm,
 254         CommentLike,
 255         CommentLikeForm,
 256         CommentSaved,
 257         CommentSavedForm,
 258         CommentUpdateForm,
 259       },
 260       community::{Community, CommunityInsertForm},
 261       instance::Instance,
 262       person::{Person, PersonInsertForm},
 263       post::{Post, PostInsertForm},
 264     },
 265     traits::{Crud, Likeable, Saveable},
 266     utils::build_db_pool_for_tests,
 267   };
 268   use diesel_ltree::Ltree;
 269   use serial_test::serial;
 270
 271   #[tokio::test]
 272   #[serial]
 273   async fn test_crud() {
 274     let pool = &build_db_pool_for_tests().await;
 275     let pool = &mut pool.into();
 276
 277     let inserted_instance = Instance::read_or_create(pool, "my_domain.tld".to_string())
 278       .await
 279       .unwrap();
 280
 281     let new_person = PersonInsertForm::builder()
 282       .name("terry".into())
 283       .public_key("pubkey".to_string())
 284       .instance_id(inserted_instance.id)
 285       .build();
 286
 287     let inserted_person = Person::create(pool, &new_person).await.unwrap();
 288
 289     let new_community = CommunityInsertForm::builder()
 290       .name("test community".to_string())
 291       .title("nada".to_owned())
 292       .public_key("pubkey".to_string())
 293       .instance_id(inserted_instance.id)
 294       .build();
 295
 296     let inserted_community = Community::create(pool, &new_community).await.unwrap();
 297
 298     let new_post = PostInsertForm::builder()
 299       .name("A test post".into())
 300       .creator_id(inserted_person.id)
 301       .community_id(inserted_community.id)
 302       .build();
 303
 304     let inserted_post = Post::create(pool, &new_post).await.unwrap();
 305
 306     let comment_form = CommentInsertForm::builder()
 307       .content("A test comment".into())
 308       .creator_id(inserted_person.id)
 309       .post_id(inserted_post.id)
 310       .build();
 311
 312     let inserted_comment = Comment::create(pool, &comment_form, None).await.unwrap();
 313
 314     let expected_comment = Comment {
 315       id: inserted_comment.id,
 316       content: "A test comment".into(),
 317       creator_id: inserted_person.id,
 318       post_id: inserted_post.id,
 319       removed: false,
 320       deleted: false,
 321       path: Ltree(format!("0.{}", inserted_comment.id)),
 322       published: inserted_comment.published,
 323       updated: None,
 324       ap_id: inserted_comment.ap_id.clone(),
 325       distinguished: false,
 326       local: true,
 327       language_id: LanguageId::default(),
 328     };
 329
 330     let child_comment_form = CommentInsertForm::builder()
 331       .content("A child comment".into())
 332       .creator_id(inserted_person.id)
 333       .post_id(inserted_post.id)
 334       .build();
 335
 336     let inserted_child_comment =
 337       Comment::create(pool, &child_comment_form, Some(&inserted_comment.path))
 338         .await
 339         .unwrap();
 340
 341     // Comment Like
 342     let comment_like_form = CommentLikeForm {
 343       comment_id: inserted_comment.id,
 344       post_id: inserted_post.id,
 345       person_id: inserted_person.id,
 346       score: 1,
 347     };
 348
 349     let inserted_comment_like = CommentLike::like(pool, &comment_like_form).await.unwrap();
 350
 351     let expected_comment_like = CommentLike {
 352       id: inserted_comment_like.id,
 353       comment_id: inserted_comment.id,
 354       post_id: inserted_post.id,
 355       person_id: inserted_person.id,
 356       published: inserted_comment_like.published,
 357       score: 1,
 358     };
 359
 360     // Comment Saved
 361     let comment_saved_form = CommentSavedForm {
 362       comment_id: inserted_comment.id,
 363       person_id: inserted_person.id,
 364     };
 365
 366     let inserted_comment_saved = CommentSaved::save(pool, &comment_saved_form).await.unwrap();
 367
 368     let expected_comment_saved = CommentSaved {
 369       id: inserted_comment_saved.id,
 370       comment_id: inserted_comment.id,
 371       person_id: inserted_person.id,
 372       published: inserted_comment_saved.published,
 373     };
 374
 375     let comment_update_form = CommentUpdateForm {
 376       content: Some("A test comment".into()),
 377       ..Default::default()
 378     };
 379
 380     let updated_comment = Comment::update(pool, inserted_comment.id, &comment_update_form)
 381       .await
 382       .unwrap();
 383
 384     let read_comment = Comment::read(pool, inserted_comment.id).await.unwrap();
 385     let like_removed = CommentLike::remove(pool, inserted_person.id, inserted_comment.id)
 386       .await
 387       .unwrap();
 388     let saved_removed = CommentSaved::unsave(pool, &comment_saved_form)
 389       .await
 390       .unwrap();
 391     let num_deleted = Comment::delete(pool, inserted_comment.id).await.unwrap();
 392     Comment::delete(pool, inserted_child_comment.id)
 393       .await
 394       .unwrap();
 395     Post::delete(pool, inserted_post.id).await.unwrap();
 396     Community::delete(pool, inserted_community.id)
 397       .await
 398       .unwrap();
 399     Person::delete(pool, inserted_person.id).await.unwrap();
 400     Instance::delete(pool, inserted_instance.id).await.unwrap();
 401
 402     assert_eq!(expected_comment, read_comment);
 403     assert_eq!(expected_comment, inserted_comment);
 404     assert_eq!(expected_comment, updated_comment);
 405     assert_eq!(expected_comment_like, inserted_comment_like);
 406     assert_eq!(expected_comment_saved, inserted_comment_saved);
 407     assert_eq!(
 408       format!("0.{}.{}", expected_comment.id, inserted_child_comment.id),
 409       inserted_child_comment.path.0,
 410     );
 411     assert_eq!(1, like_removed);
 412     assert_eq!(1, saved_removed);
 413     assert_eq!(1, num_deleted);
 414   }
 415 }