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 path_split = parent_path.0.split('.').collect::<Vec<&str>>();
 103         let parent_id = path_split.get(1);
 104
 105         if let Some(parent_id) = parent_id {
 106           let top_parent = format!("0.{}", parent_id);
 107           let update_child_count_stmt = format!(
 108             "
 109 update comment_aggregates ca set child_count = c.child_count
 110 from (
 111   select c.id, c.path, count(c2.id) as child_count from comment c
 112   join comment c2 on c2.path <@ c.path and c2.path != c.path
 113   and c.path <@ '{top_parent}'
 114   group by c.id
 115 ) as c
 116 where ca.comment_id = c.id"
 117           );
 118
 119           sql_query(update_child_count_stmt).execute(conn).await?;
 120         }
 121       }
 122       updated_comment
 123     } else {
 124       inserted_comment
 125     }
 126   }
 127   pub async fn read_from_apub_id(pool: &DbPool, object_id: Url) -> Result<Option<Self>, Error> {
 128     let conn = &mut get_conn(pool).await?;
 129     let object_id: DbUrl = object_id.into();
 130     Ok(
 131       comment
 132         .filter(ap_id.eq(object_id))
 133         .first::<Comment>(conn)
 134         .await
 135         .ok()
 136         .map(Into::into),
 137     )
 138   }
 139
 140   pub fn parent_comment_id(&self) -> Option<CommentId> {
 141     let mut ltree_split: Vec<&str> = self.path.0.split('.').collect();
 142     ltree_split.remove(0); // The first is always 0
 143     if ltree_split.len() > 1 {
 144       let parent_comment_id = ltree_split.get(ltree_split.len() - 2);
 145       parent_comment_id.and_then(|p| p.parse::<i32>().map(CommentId).ok())
 146     } else {
 147       None
 148     }
 149   }
 150 }
 151
 152 #[async_trait]
 153 impl Crud for Comment {
 154   type InsertForm = CommentInsertForm;
 155   type UpdateForm = CommentUpdateForm;
 156   type IdType = CommentId;
 157   async fn read(pool: &DbPool, comment_id: CommentId) -> Result<Self, Error> {
 158     let conn = &mut get_conn(pool).await?;
 159     comment.find(comment_id).first::<Self>(conn).await
 160   }
 161
 162   async fn delete(pool: &DbPool, comment_id: CommentId) -> Result<usize, Error> {
 163     let conn = &mut get_conn(pool).await?;
 164     diesel::delete(comment.find(comment_id)).execute(conn).await
 165   }
 166
 167   /// This is unimplemented, use [[Comment::create]]
 168   async fn create(_pool: &DbPool, _comment_form: &Self::InsertForm) -> Result<Self, Error> {
 169     unimplemented!();
 170   }
 171
 172   async fn update(
 173     pool: &DbPool,
 174     comment_id: CommentId,
 175     comment_form: &Self::UpdateForm,
 176   ) -> Result<Self, Error> {
 177     let conn = &mut get_conn(pool).await?;
 178     diesel::update(comment.find(comment_id))
 179       .set(comment_form)
 180       .get_result::<Self>(conn)
 181       .await
 182   }
 183 }
 184
 185 #[async_trait]
 186 impl Likeable for CommentLike {
 187   type Form = CommentLikeForm;
 188   type IdType = CommentId;
 189   async fn like(pool: &DbPool, comment_like_form: &CommentLikeForm) -> Result<Self, Error> {
 190     use crate::schema::comment_like::dsl::{comment_id, comment_like, person_id};
 191     let conn = &mut get_conn(pool).await?;
 192     insert_into(comment_like)
 193       .values(comment_like_form)
 194       .on_conflict((comment_id, person_id))
 195       .do_update()
 196       .set(comment_like_form)
 197       .get_result::<Self>(conn)
 198       .await
 199   }
 200   async fn remove(
 201     pool: &DbPool,
 202     person_id_: PersonId,
 203     comment_id_: CommentId,
 204   ) -> Result<usize, Error> {
 205     use crate::schema::comment_like::dsl::{comment_id, comment_like, person_id};
 206     let conn = &mut get_conn(pool).await?;
 207     diesel::delete(
 208       comment_like
 209         .filter(comment_id.eq(comment_id_))
 210         .filter(person_id.eq(person_id_)),
 211     )
 212     .execute(conn)
 213     .await
 214   }
 215 }
 216
 217 #[async_trait]
 218 impl Saveable for CommentSaved {
 219   type Form = CommentSavedForm;
 220   async fn save(pool: &DbPool, comment_saved_form: &CommentSavedForm) -> Result<Self, Error> {
 221     use crate::schema::comment_saved::dsl::{comment_id, comment_saved, person_id};
 222     let conn = &mut get_conn(pool).await?;
 223     insert_into(comment_saved)
 224       .values(comment_saved_form)
 225       .on_conflict((comment_id, person_id))
 226       .do_update()
 227       .set(comment_saved_form)
 228       .get_result::<Self>(conn)
 229       .await
 230   }
 231   async fn unsave(pool: &DbPool, comment_saved_form: &CommentSavedForm) -> Result<usize, Error> {
 232     use crate::schema::comment_saved::dsl::{comment_id, comment_saved, person_id};
 233     let conn = &mut get_conn(pool).await?;
 234     diesel::delete(
 235       comment_saved
 236         .filter(comment_id.eq(comment_saved_form.comment_id))
 237         .filter(person_id.eq(comment_saved_form.person_id)),
 238     )
 239     .execute(conn)
 240     .await
 241   }
 242 }
 243
 244 #[cfg(test)]
 245 mod tests {
 246   use crate::{
 247     newtypes::LanguageId,
 248     source::{
 249       comment::{
 250         Comment,
 251         CommentInsertForm,
 252         CommentLike,
 253         CommentLikeForm,
 254         CommentSaved,
 255         CommentSavedForm,
 256         CommentUpdateForm,
 257       },
 258       community::{Community, CommunityInsertForm},
 259       instance::Instance,
 260       person::{Person, PersonInsertForm},
 261       post::{Post, PostInsertForm},
 262     },
 263     traits::{Crud, Likeable, Saveable},
 264     utils::build_db_pool_for_tests,
 265   };
 266   use diesel_ltree::Ltree;
 267   use serial_test::serial;
 268
 269   #[tokio::test]
 270   #[serial]
 271   async fn test_crud() {
 272     let pool = &build_db_pool_for_tests().await;
 273
 274     let inserted_instance = Instance::read_or_create(pool, "my_domain.tld".to_string())
 275       .await
 276       .unwrap();
 277
 278     let new_person = PersonInsertForm::builder()
 279       .name("terry".into())
 280       .public_key("pubkey".to_string())
 281       .instance_id(inserted_instance.id)
 282       .build();
 283
 284     let inserted_person = Person::create(pool, &new_person).await.unwrap();
 285
 286     let new_community = CommunityInsertForm::builder()
 287       .name("test community".to_string())
 288       .title("nada".to_owned())
 289       .public_key("pubkey".to_string())
 290       .instance_id(inserted_instance.id)
 291       .build();
 292
 293     let inserted_community = Community::create(pool, &new_community).await.unwrap();
 294
 295     let new_post = PostInsertForm::builder()
 296       .name("A test post".into())
 297       .creator_id(inserted_person.id)
 298       .community_id(inserted_community.id)
 299       .build();
 300
 301     let inserted_post = Post::create(pool, &new_post).await.unwrap();
 302
 303     let comment_form = CommentInsertForm::builder()
 304       .content("A test comment".into())
 305       .creator_id(inserted_person.id)
 306       .post_id(inserted_post.id)
 307       .build();
 308
 309     let inserted_comment = Comment::create(pool, &comment_form, None).await.unwrap();
 310
 311     let expected_comment = Comment {
 312       id: inserted_comment.id,
 313       content: "A test comment".into(),
 314       creator_id: inserted_person.id,
 315       post_id: inserted_post.id,
 316       removed: false,
 317       deleted: false,
 318       path: Ltree(format!("0.{}", inserted_comment.id)),
 319       published: inserted_comment.published,
 320       updated: None,
 321       ap_id: inserted_comment.ap_id.clone(),
 322       distinguished: false,
 323       local: true,
 324       language_id: LanguageId::default(),
 325     };
 326
 327     let child_comment_form = CommentInsertForm::builder()
 328       .content("A child comment".into())
 329       .creator_id(inserted_person.id)
 330       .post_id(inserted_post.id)
 331       .build();
 332
 333     let inserted_child_comment =
 334       Comment::create(pool, &child_comment_form, Some(&inserted_comment.path))
 335         .await
 336         .unwrap();
 337
 338     // Comment Like
 339     let comment_like_form = CommentLikeForm {
 340       comment_id: inserted_comment.id,
 341       post_id: inserted_post.id,
 342       person_id: inserted_person.id,
 343       score: 1,
 344     };
 345
 346     let inserted_comment_like = CommentLike::like(pool, &comment_like_form).await.unwrap();
 347
 348     let expected_comment_like = CommentLike {
 349       id: inserted_comment_like.id,
 350       comment_id: inserted_comment.id,
 351       post_id: inserted_post.id,
 352       person_id: inserted_person.id,
 353       published: inserted_comment_like.published,
 354       score: 1,
 355     };
 356
 357     // Comment Saved
 358     let comment_saved_form = CommentSavedForm {
 359       comment_id: inserted_comment.id,
 360       person_id: inserted_person.id,
 361     };
 362
 363     let inserted_comment_saved = CommentSaved::save(pool, &comment_saved_form).await.unwrap();
 364
 365     let expected_comment_saved = CommentSaved {
 366       id: inserted_comment_saved.id,
 367       comment_id: inserted_comment.id,
 368       person_id: inserted_person.id,
 369       published: inserted_comment_saved.published,
 370     };
 371
 372     let comment_update_form = CommentUpdateForm::builder()
 373       .content(Some("A test comment".into()))
 374       .build();
 375
 376     let updated_comment = Comment::update(pool, inserted_comment.id, &comment_update_form)
 377       .await
 378       .unwrap();
 379
 380     let read_comment = Comment::read(pool, inserted_comment.id).await.unwrap();
 381     let like_removed = CommentLike::remove(pool, inserted_person.id, inserted_comment.id)
 382       .await
 383       .unwrap();
 384     let saved_removed = CommentSaved::unsave(pool, &comment_saved_form)
 385       .await
 386       .unwrap();
 387     let num_deleted = Comment::delete(pool, inserted_comment.id).await.unwrap();
 388     Comment::delete(pool, inserted_child_comment.id)
 389       .await
 390       .unwrap();
 391     Post::delete(pool, inserted_post.id).await.unwrap();
 392     Community::delete(pool, inserted_community.id)
 393       .await
 394       .unwrap();
 395     Person::delete(pool, inserted_person.id).await.unwrap();
 396     Instance::delete(pool, inserted_instance.id).await.unwrap();
 397
 398     assert_eq!(expected_comment, read_comment);
 399     assert_eq!(expected_comment, inserted_comment);
 400     assert_eq!(expected_comment, updated_comment);
 401     assert_eq!(expected_comment_like, inserted_comment_like);
 402     assert_eq!(expected_comment_saved, inserted_comment_saved);
 403     assert_eq!(
 404       format!("0.{}.{}", expected_comment.id, inserted_child_comment.id),
 405       inserted_child_comment.path.0,
 406     );
 407     assert_eq!(1, like_removed);
 408     assert_eq!(1, saved_removed);
 409     assert_eq!(1, num_deleted);
 410   }
 411 }