server/lemmy_db/src/comment.rs

   1 use super::post::Post;
   2 use crate::{
   3   naive_now,
   4   schema::{comment, comment_like, comment_saved},
   5   Crud,
   6   Likeable,
   7   Saveable,
   8 };
   9 use diesel::{dsl::*, result::Error, *};
  10 use url::{ParseError, Url};
  11
  12 // WITH RECURSIVE MyTree AS (
  13 //     SELECT * FROM comment WHERE parent_id IS NULL
  14 //     UNION ALL
  15 //     SELECT m.* FROM comment AS m JOIN MyTree AS t ON m.parent_id = t.id
  16 // )
  17 // SELECT * FROM MyTree;
  18
  19 #[derive(Clone, Queryable, Associations, Identifiable, PartialEq, Debug)]
  20 #[belongs_to(Post)]
  21 #[table_name = "comment"]
  22 pub struct Comment {
  23   pub id: i32,
  24   pub creator_id: i32,
  25   pub post_id: i32,
  26   pub parent_id: Option<i32>,
  27   pub content: String,
  28   pub removed: bool,
  29   pub read: bool, // Whether the recipient has read the comment or not
  30   pub published: chrono::NaiveDateTime,
  31   pub updated: Option<chrono::NaiveDateTime>,
  32   pub deleted: bool,
  33   pub ap_id: String,
  34   pub local: bool,
  35 }
  36
  37 #[derive(Insertable, AsChangeset, Clone)]
  38 #[table_name = "comment"]
  39 pub struct CommentForm {
  40   pub creator_id: i32,
  41   pub post_id: i32,
  42   pub parent_id: Option<i32>,
  43   pub content: String,
  44   pub removed: Option<bool>,
  45   pub read: Option<bool>,
  46   pub published: Option<chrono::NaiveDateTime>,
  47   pub updated: Option<chrono::NaiveDateTime>,
  48   pub deleted: Option<bool>,
  49   pub ap_id: Option<String>,
  50   pub local: bool,
  51 }
  52
  53 impl CommentForm {
  54   pub fn get_ap_id(&self) -> Result<Url, ParseError> {
  55     Url::parse(&self.ap_id.as_ref().unwrap_or(&"not_a_url".to_string()))
  56   }
  57 }
  58
  59 impl Crud<CommentForm> for Comment {
  60   fn read(conn: &PgConnection, comment_id: i32) -> Result<Self, Error> {
  61     use crate::schema::comment::dsl::*;
  62     comment.find(comment_id).first::<Self>(conn)
  63   }
  64
  65   fn delete(conn: &PgConnection, comment_id: i32) -> Result<usize, Error> {
  66     use crate::schema::comment::dsl::*;
  67     diesel::delete(comment.find(comment_id)).execute(conn)
  68   }
  69
  70   fn create(conn: &PgConnection, comment_form: &CommentForm) -> Result<Self, Error> {
  71     use crate::schema::comment::dsl::*;
  72     insert_into(comment)
  73       .values(comment_form)
  74       .get_result::<Self>(conn)
  75   }
  76
  77   fn update(
  78     conn: &PgConnection,
  79     comment_id: i32,
  80     comment_form: &CommentForm,
  81   ) -> Result<Self, Error> {
  82     use crate::schema::comment::dsl::*;
  83     diesel::update(comment.find(comment_id))
  84       .set(comment_form)
  85       .get_result::<Self>(conn)
  86   }
  87 }
  88
  89 impl Comment {
  90   pub fn update_ap_id(
  91     conn: &PgConnection,
  92     comment_id: i32,
  93     apub_id: String,
  94   ) -> Result<Self, Error> {
  95     use crate::schema::comment::dsl::*;
  96
  97     diesel::update(comment.find(comment_id))
  98       .set(ap_id.eq(apub_id))
  99       .get_result::<Self>(conn)
 100   }
 101
 102   pub fn read_from_apub_id(conn: &PgConnection, object_id: &str) -> Result<Self, Error> {
 103     use crate::schema::comment::dsl::*;
 104     comment.filter(ap_id.eq(object_id)).first::<Self>(conn)
 105   }
 106
 107   pub fn permadelete_for_creator(
 108     conn: &PgConnection,
 109     for_creator_id: i32,
 110   ) -> Result<Vec<Self>, Error> {
 111     use crate::schema::comment::dsl::*;
 112     diesel::update(comment.filter(creator_id.eq(for_creator_id)))
 113       .set((
 114         content.eq("*Permananently Deleted*"),
 115         deleted.eq(true),
 116         updated.eq(naive_now()),
 117       ))
 118       .get_results::<Self>(conn)
 119   }
 120
 121   pub fn update_deleted(
 122     conn: &PgConnection,
 123     comment_id: i32,
 124     new_deleted: bool,
 125   ) -> Result<Self, Error> {
 126     use crate::schema::comment::dsl::*;
 127     diesel::update(comment.find(comment_id))
 128       .set((deleted.eq(new_deleted), updated.eq(naive_now())))
 129       .get_result::<Self>(conn)
 130   }
 131
 132   pub fn update_removed(
 133     conn: &PgConnection,
 134     comment_id: i32,
 135     new_removed: bool,
 136   ) -> Result<Self, Error> {
 137     use crate::schema::comment::dsl::*;
 138     diesel::update(comment.find(comment_id))
 139       .set((removed.eq(new_removed), updated.eq(naive_now())))
 140       .get_result::<Self>(conn)
 141   }
 142
 143   pub fn update_removed_for_creator(
 144     conn: &PgConnection,
 145     for_creator_id: i32,
 146     new_removed: bool,
 147   ) -> Result<Vec<Self>, Error> {
 148     use crate::schema::comment::dsl::*;
 149     diesel::update(comment.filter(creator_id.eq(for_creator_id)))
 150       .set((removed.eq(new_removed), updated.eq(naive_now())))
 151       .get_results::<Self>(conn)
 152   }
 153
 154   pub fn update_read(conn: &PgConnection, comment_id: i32, new_read: bool) -> Result<Self, Error> {
 155     use crate::schema::comment::dsl::*;
 156     diesel::update(comment.find(comment_id))
 157       .set(read.eq(new_read))
 158       .get_result::<Self>(conn)
 159   }
 160
 161   pub fn update_content(
 162     conn: &PgConnection,
 163     comment_id: i32,
 164     new_content: &str,
 165   ) -> Result<Self, Error> {
 166     use crate::schema::comment::dsl::*;
 167     diesel::update(comment.find(comment_id))
 168       .set((content.eq(new_content), updated.eq(naive_now())))
 169       .get_result::<Self>(conn)
 170   }
 171
 172   pub fn upsert(conn: &PgConnection, comment_form: &CommentForm) -> Result<Self, Error> {
 173     use crate::schema::comment::dsl::*;
 174     insert_into(comment)
 175       .values(comment_form)
 176       .on_conflict(ap_id)
 177       .do_update()
 178       .set(comment_form)
 179       .get_result::<Self>(conn)
 180   }
 181 }
 182
 183 #[derive(Identifiable, Queryable, Associations, PartialEq, Debug, Clone)]
 184 #[belongs_to(Comment)]
 185 #[table_name = "comment_like"]
 186 pub struct CommentLike {
 187   pub id: i32,
 188   pub user_id: i32,
 189   pub comment_id: i32,
 190   pub post_id: i32,
 191   pub score: i16,
 192   pub published: chrono::NaiveDateTime,
 193 }
 194
 195 #[derive(Insertable, AsChangeset, Clone)]
 196 #[table_name = "comment_like"]
 197 pub struct CommentLikeForm {
 198   pub user_id: i32,
 199   pub comment_id: i32,
 200   pub post_id: i32,
 201   pub score: i16,
 202 }
 203
 204 impl Likeable<CommentLikeForm> for CommentLike {
 205   fn like(conn: &PgConnection, comment_like_form: &CommentLikeForm) -> Result<Self, Error> {
 206     use crate::schema::comment_like::dsl::*;
 207     insert_into(comment_like)
 208       .values(comment_like_form)
 209       .get_result::<Self>(conn)
 210   }
 211   fn remove(conn: &PgConnection, user_id: i32, comment_id: i32) -> Result<usize, Error> {
 212     use crate::schema::comment_like::dsl;
 213     diesel::delete(
 214       dsl::comment_like
 215         .filter(dsl::comment_id.eq(comment_id))
 216         .filter(dsl::user_id.eq(user_id)),
 217     )
 218     .execute(conn)
 219   }
 220 }
 221
 222 #[derive(Identifiable, Queryable, Associations, PartialEq, Debug)]
 223 #[belongs_to(Comment)]
 224 #[table_name = "comment_saved"]
 225 pub struct CommentSaved {
 226   pub id: i32,
 227   pub comment_id: i32,
 228   pub user_id: i32,
 229   pub published: chrono::NaiveDateTime,
 230 }
 231
 232 #[derive(Insertable, AsChangeset)]
 233 #[table_name = "comment_saved"]
 234 pub struct CommentSavedForm {
 235   pub comment_id: i32,
 236   pub user_id: i32,
 237 }
 238
 239 impl Saveable<CommentSavedForm> for CommentSaved {
 240   fn save(conn: &PgConnection, comment_saved_form: &CommentSavedForm) -> Result<Self, Error> {
 241     use crate::schema::comment_saved::dsl::*;
 242     insert_into(comment_saved)
 243       .values(comment_saved_form)
 244       .get_result::<Self>(conn)
 245   }
 246   fn unsave(conn: &PgConnection, comment_saved_form: &CommentSavedForm) -> Result<usize, Error> {
 247     use crate::schema::comment_saved::dsl::*;
 248     diesel::delete(
 249       comment_saved
 250         .filter(comment_id.eq(comment_saved_form.comment_id))
 251         .filter(user_id.eq(comment_saved_form.user_id)),
 252     )
 253     .execute(conn)
 254   }
 255 }
 256
 257 #[cfg(test)]
 258 mod tests {
 259   use crate::{
 260     comment::*,
 261     community::*,
 262     post::*,
 263     tests::establish_unpooled_connection,
 264     user::*,
 265     Crud,
 266     ListingType,
 267     SortType,
 268   };
 269
 270   #[test]
 271   fn test_crud() {
 272     let conn = establish_unpooled_connection();
 273
 274     let new_user = UserForm {
 275       name: "terry".into(),
 276       preferred_username: None,
 277       password_encrypted: "nope".into(),
 278       email: None,
 279       matrix_user_id: None,
 280       avatar: None,
 281       banner: None,
 282       admin: false,
 283       banned: false,
 284       updated: None,
 285       show_nsfw: false,
 286       theme: "darkly".into(),
 287       default_sort_type: SortType::Hot as i16,
 288       default_listing_type: ListingType::Subscribed as i16,
 289       lang: "browser".into(),
 290       show_avatars: true,
 291       send_notifications_to_email: false,
 292       actor_id: None,
 293       bio: None,
 294       local: true,
 295       private_key: None,
 296       public_key: None,
 297       last_refreshed_at: None,
 298     };
 299
 300     let inserted_user = User_::create(&conn, &new_user).unwrap();
 301
 302     let new_community = CommunityForm {
 303       name: "test community".to_string(),
 304       title: "nada".to_owned(),
 305       description: None,
 306       category_id: 1,
 307       creator_id: inserted_user.id,
 308       removed: None,
 309       deleted: None,
 310       updated: None,
 311       nsfw: false,
 312       actor_id: None,
 313       local: true,
 314       private_key: None,
 315       public_key: None,
 316       last_refreshed_at: None,
 317       published: None,
 318       banner: None,
 319       icon: None,
 320     };
 321
 322     let inserted_community = Community::create(&conn, &new_community).unwrap();
 323
 324     let new_post = PostForm {
 325       name: "A test post".into(),
 326       creator_id: inserted_user.id,
 327       url: None,
 328       body: None,
 329       community_id: inserted_community.id,
 330       removed: None,
 331       deleted: None,
 332       locked: None,
 333       stickied: None,
 334       updated: None,
 335       nsfw: false,
 336       embed_title: None,
 337       embed_description: None,
 338       embed_html: None,
 339       thumbnail_url: None,
 340       ap_id: None,
 341       local: true,
 342       published: None,
 343     };
 344
 345     let inserted_post = Post::create(&conn, &new_post).unwrap();
 346
 347     let comment_form = CommentForm {
 348       content: "A test comment".into(),
 349       creator_id: inserted_user.id,
 350       post_id: inserted_post.id,
 351       removed: None,
 352       deleted: None,
 353       read: None,
 354       parent_id: None,
 355       published: None,
 356       updated: None,
 357       ap_id: None,
 358       local: true,
 359     };
 360
 361     let inserted_comment = Comment::create(&conn, &comment_form).unwrap();
 362
 363     let expected_comment = Comment {
 364       id: inserted_comment.id,
 365       content: "A test comment".into(),
 366       creator_id: inserted_user.id,
 367       post_id: inserted_post.id,
 368       removed: false,
 369       deleted: false,
 370       read: false,
 371       parent_id: None,
 372       published: inserted_comment.published,
 373       updated: None,
 374       ap_id: inserted_comment.ap_id.to_owned(),
 375       local: true,
 376     };
 377
 378     let child_comment_form = CommentForm {
 379       content: "A child comment".into(),
 380       creator_id: inserted_user.id,
 381       post_id: inserted_post.id,
 382       parent_id: Some(inserted_comment.id),
 383       removed: None,
 384       deleted: None,
 385       read: None,
 386       published: None,
 387       updated: None,
 388       ap_id: None,
 389       local: true,
 390     };
 391
 392     let inserted_child_comment = Comment::create(&conn, &child_comment_form).unwrap();
 393
 394     // Comment Like
 395     let comment_like_form = CommentLikeForm {
 396       comment_id: inserted_comment.id,
 397       post_id: inserted_post.id,
 398       user_id: inserted_user.id,
 399       score: 1,
 400     };
 401
 402     let inserted_comment_like = CommentLike::like(&conn, &comment_like_form).unwrap();
 403
 404     let expected_comment_like = CommentLike {
 405       id: inserted_comment_like.id,
 406       comment_id: inserted_comment.id,
 407       post_id: inserted_post.id,
 408       user_id: inserted_user.id,
 409       published: inserted_comment_like.published,
 410       score: 1,
 411     };
 412
 413     // Comment Saved
 414     let comment_saved_form = CommentSavedForm {
 415       comment_id: inserted_comment.id,
 416       user_id: inserted_user.id,
 417     };
 418
 419     let inserted_comment_saved = CommentSaved::save(&conn, &comment_saved_form).unwrap();
 420
 421     let expected_comment_saved = CommentSaved {
 422       id: inserted_comment_saved.id,
 423       comment_id: inserted_comment.id,
 424       user_id: inserted_user.id,
 425       published: inserted_comment_saved.published,
 426     };
 427
 428     let read_comment = Comment::read(&conn, inserted_comment.id).unwrap();
 429     let updated_comment = Comment::update(&conn, inserted_comment.id, &comment_form).unwrap();
 430     let like_removed = CommentLike::remove(&conn, inserted_user.id, inserted_comment.id).unwrap();
 431     let saved_removed = CommentSaved::unsave(&conn, &comment_saved_form).unwrap();
 432     let num_deleted = Comment::delete(&conn, inserted_comment.id).unwrap();
 433     Comment::delete(&conn, inserted_child_comment.id).unwrap();
 434     Post::delete(&conn, inserted_post.id).unwrap();
 435     Community::delete(&conn, inserted_community.id).unwrap();
 436     User_::delete(&conn, inserted_user.id).unwrap();
 437
 438     assert_eq!(expected_comment, read_comment);
 439     assert_eq!(expected_comment, inserted_comment);
 440     assert_eq!(expected_comment, updated_comment);
 441     assert_eq!(expected_comment_like, inserted_comment_like);
 442     assert_eq!(expected_comment_saved, inserted_comment_saved);
 443     assert_eq!(
 444       expected_comment.id,
 445       inserted_child_comment.parent_id.unwrap()
 446     );
 447     assert_eq!(1, like_removed);
 448     assert_eq!(1, saved_removed);
 449     assert_eq!(1, num_deleted);
 450   }
 451 }