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