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 <@ '{top_parent}'
 109   group by c.id
 110 ) as c
 111 where ca.comment_id = c.id"
 112         );
 113
 114         sql_query(update_child_count_stmt).execute(conn).await?;
 115       }
 116       updated_comment
 117     } else {
 118       inserted_comment
 119     }
 120   }
 121   pub async fn read_from_apub_id(pool: &DbPool, object_id: Url) -> Result<Option<Self>, Error> {
 122     let conn = &mut get_conn(pool).await?;
 123     let object_id: DbUrl = object_id.into();
 124     Ok(
 125       comment
 126         .filter(ap_id.eq(object_id))
 127         .first::<Comment>(conn)
 128         .await
 129         .ok()
 130         .map(Into::into),
 131     )
 132   }
 133
 134   pub fn parent_comment_id(&self) -> Option<CommentId> {
 135     let mut ltree_split: Vec<&str> = self.path.0.split('.').collect();
 136     ltree_split.remove(0); // The first is always 0
 137     if ltree_split.len() > 1 {
 138       ltree_split[ltree_split.len() - 2]
 139         .parse::<i32>()
 140         .map(CommentId)
 141         .ok()
 142     } else {
 143       None
 144     }
 145   }
 146 }
 147
 148 #[async_trait]
 149 impl Crud for Comment {
 150   type InsertForm = CommentInsertForm;
 151   type UpdateForm = CommentUpdateForm;
 152   type IdType = CommentId;
 153   async fn read(pool: &DbPool, comment_id: CommentId) -> Result<Self, Error> {
 154     let conn = &mut get_conn(pool).await?;
 155     comment.find(comment_id).first::<Self>(conn).await
 156   }
 157
 158   async fn delete(pool: &DbPool, comment_id: CommentId) -> Result<usize, Error> {
 159     let conn = &mut get_conn(pool).await?;
 160     diesel::delete(comment.find(comment_id)).execute(conn).await
 161   }
 162
 163   /// This is unimplemented, use [[Comment::create]]
 164   async fn create(_pool: &DbPool, _comment_form: &Self::InsertForm) -> Result<Self, Error> {
 165     unimplemented!();
 166   }
 167
 168   async fn update(
 169     pool: &DbPool,
 170     comment_id: CommentId,
 171     comment_form: &Self::UpdateForm,
 172   ) -> Result<Self, Error> {
 173     let conn = &mut get_conn(pool).await?;
 174     diesel::update(comment.find(comment_id))
 175       .set(comment_form)
 176       .get_result::<Self>(conn)
 177       .await
 178   }
 179 }
 180
 181 #[async_trait]
 182 impl Likeable for CommentLike {
 183   type Form = CommentLikeForm;
 184   type IdType = CommentId;
 185   async fn like(pool: &DbPool, comment_like_form: &CommentLikeForm) -> Result<Self, Error> {
 186     use crate::schema::comment_like::dsl::{comment_id, comment_like, person_id};
 187     let conn = &mut get_conn(pool).await?;
 188     insert_into(comment_like)
 189       .values(comment_like_form)
 190       .on_conflict((comment_id, person_id))
 191       .do_update()
 192       .set(comment_like_form)
 193       .get_result::<Self>(conn)
 194       .await
 195   }
 196   async fn remove(
 197     pool: &DbPool,
 198     person_id_: PersonId,
 199     comment_id_: CommentId,
 200   ) -> Result<usize, Error> {
 201     use crate::schema::comment_like::dsl::{comment_id, comment_like, person_id};
 202     let conn = &mut get_conn(pool).await?;
 203     diesel::delete(
 204       comment_like
 205         .filter(comment_id.eq(comment_id_))
 206         .filter(person_id.eq(person_id_)),
 207     )
 208     .execute(conn)
 209     .await
 210   }
 211 }
 212
 213 #[async_trait]
 214 impl Saveable for CommentSaved {
 215   type Form = CommentSavedForm;
 216   async fn save(pool: &DbPool, comment_saved_form: &CommentSavedForm) -> 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(pool: &DbPool, comment_saved_form: &CommentSavedForm) -> Result<usize, Error> {
 228     use crate::schema::comment_saved::dsl::{comment_id, comment_saved, person_id};
 229     let conn = &mut get_conn(pool).await?;
 230     diesel::delete(
 231       comment_saved
 232         .filter(comment_id.eq(comment_saved_form.comment_id))
 233         .filter(person_id.eq(comment_saved_form.person_id)),
 234     )
 235     .execute(conn)
 236     .await
 237   }
 238 }
 239
 240 impl DeleteableOrRemoveable for Comment {
 241   fn blank_out_deleted_or_removed_info(mut self) -> Self {
 242     self.content = String::new();
 243     self
 244   }
 245 }
 246
 247 #[cfg(test)]
 248 mod tests {
 249   use crate::{
 250     newtypes::LanguageId,
 251     source::{
 252       comment::{
 253         Comment,
 254         CommentInsertForm,
 255         CommentLike,
 256         CommentLikeForm,
 257         CommentSaved,
 258         CommentSavedForm,
 259         CommentUpdateForm,
 260       },
 261       community::{Community, CommunityInsertForm},
 262       instance::Instance,
 263       person::{Person, PersonInsertForm},
 264       post::{Post, PostInsertForm},
 265     },
 266     traits::{Crud, Likeable, Saveable},
 267     utils::build_db_pool_for_tests,
 268   };
 269   use diesel_ltree::Ltree;
 270   use serial_test::serial;
 271
 272   #[tokio::test]
 273   #[serial]
 274   async fn test_crud() {
 275     let pool = &build_db_pool_for_tests().await;
 276
 277     let inserted_instance = Instance::create(pool, "my_domain.tld").await.unwrap();
 278
 279     let new_person = PersonInsertForm::builder()
 280       .name("terry".into())
 281       .public_key("pubkey".to_string())
 282       .instance_id(inserted_instance.id)
 283       .build();
 284
 285     let inserted_person = Person::create(pool, &new_person).await.unwrap();
 286
 287     let new_community = CommunityInsertForm::builder()
 288       .name("test community".to_string())
 289       .title("nada".to_owned())
 290       .public_key("pubkey".to_string())
 291       .instance_id(inserted_instance.id)
 292       .build();
 293
 294     let inserted_community = Community::create(pool, &new_community).await.unwrap();
 295
 296     let new_post = PostInsertForm::builder()
 297       .name("A test post".into())
 298       .creator_id(inserted_person.id)
 299       .community_id(inserted_community.id)
 300       .build();
 301
 302     let inserted_post = Post::create(pool, &new_post).await.unwrap();
 303
 304     let comment_form = CommentInsertForm::builder()
 305       .content("A test comment".into())
 306       .creator_id(inserted_person.id)
 307       .post_id(inserted_post.id)
 308       .build();
 309
 310     let inserted_comment = Comment::create(pool, &comment_form, None).await.unwrap();
 311
 312     let expected_comment = Comment {
 313       id: inserted_comment.id,
 314       content: "A test comment".into(),
 315       creator_id: inserted_person.id,
 316       post_id: inserted_post.id,
 317       removed: false,
 318       deleted: false,
 319       path: Ltree(format!("0.{}", inserted_comment.id)),
 320       published: inserted_comment.published,
 321       updated: None,
 322       ap_id: inserted_comment.ap_id.clone(),
 323       distinguished: false,
 324       local: true,
 325       language_id: LanguageId::default(),
 326     };
 327
 328     let child_comment_form = CommentInsertForm::builder()
 329       .content("A child comment".into())
 330       .creator_id(inserted_person.id)
 331       .post_id(inserted_post.id)
 332       .build();
 333
 334     let inserted_child_comment =
 335       Comment::create(pool, &child_comment_form, Some(&inserted_comment.path))
 336         .await
 337         .unwrap();
 338
 339     // Comment Like
 340     let comment_like_form = CommentLikeForm {
 341       comment_id: inserted_comment.id,
 342       post_id: inserted_post.id,
 343       person_id: inserted_person.id,
 344       score: 1,
 345     };
 346
 347     let inserted_comment_like = CommentLike::like(pool, &comment_like_form).await.unwrap();
 348
 349     let expected_comment_like = CommentLike {
 350       id: inserted_comment_like.id,
 351       comment_id: inserted_comment.id,
 352       post_id: inserted_post.id,
 353       person_id: inserted_person.id,
 354       published: inserted_comment_like.published,
 355       score: 1,
 356     };
 357
 358     // Comment Saved
 359     let comment_saved_form = CommentSavedForm {
 360       comment_id: inserted_comment.id,
 361       person_id: inserted_person.id,
 362     };
 363
 364     let inserted_comment_saved = CommentSaved::save(pool, &comment_saved_form).await.unwrap();
 365
 366     let expected_comment_saved = CommentSaved {
 367       id: inserted_comment_saved.id,
 368       comment_id: inserted_comment.id,
 369       person_id: inserted_person.id,
 370       published: inserted_comment_saved.published,
 371     };
 372
 373     let comment_update_form = CommentUpdateForm::builder()
 374       .content(Some("A test comment".into()))
 375       .build();
 376
 377     let updated_comment = Comment::update(pool, inserted_comment.id, &comment_update_form)
 378       .await
 379       .unwrap();
 380
 381     let read_comment = Comment::read(pool, inserted_comment.id).await.unwrap();
 382     let like_removed = CommentLike::remove(pool, inserted_person.id, inserted_comment.id)
 383       .await
 384       .unwrap();
 385     let saved_removed = CommentSaved::unsave(pool, &comment_saved_form)
 386       .await
 387       .unwrap();
 388     let num_deleted = Comment::delete(pool, inserted_comment.id).await.unwrap();
 389     Comment::delete(pool, inserted_child_comment.id)
 390       .await
 391       .unwrap();
 392     Post::delete(pool, inserted_post.id).await.unwrap();
 393     Community::delete(pool, inserted_community.id)
 394       .await
 395       .unwrap();
 396     Person::delete(pool, inserted_person.id).await.unwrap();
 397     Instance::delete(pool, inserted_instance.id).await.unwrap();
 398
 399     assert_eq!(expected_comment, read_comment);
 400     assert_eq!(expected_comment, inserted_comment);
 401     assert_eq!(expected_comment, updated_comment);
 402     assert_eq!(expected_comment_like, inserted_comment_like);
 403     assert_eq!(expected_comment_saved, inserted_comment_saved);
 404     assert_eq!(
 405       format!("0.{}.{}", expected_comment.id, inserted_child_comment.id),
 406       inserted_child_comment.path.0,
 407     );
 408     assert_eq!(1, like_removed);
 409     assert_eq!(1, saved_removed);
 410     assert_eq!(1, num_deleted);
 411   }
 412 }