lemmy_db/src/comment.rs

   1 use super::post::Post;
   2 use crate::{
   3   naive_now,
   4   schema::{comment, comment_like, comment_saved},
   5   ApubObject,
   6   Crud,
   7   Likeable,
   8   Saveable,
   9 };
  10 use diesel::{dsl::*, result::Error, *};
  11 use url::{ParseError, Url};
  12
  13 // WITH RECURSIVE MyTree AS (
  14 //     SELECT * FROM comment WHERE parent_id IS NULL
  15 //     UNION ALL
  16 //     SELECT m.* FROM comment AS m JOIN MyTree AS t ON m.parent_id = t.id
  17 // )
  18 // SELECT * FROM MyTree;
  19
  20 #[derive(Clone, Queryable, Associations, Identifiable, PartialEq, Debug)]
  21 #[belongs_to(Post)]
  22 #[table_name = "comment"]
  23 pub struct Comment {
  24   pub id: i32,
  25   pub creator_id: i32,
  26   pub post_id: i32,
  27   pub parent_id: Option<i32>,
  28   pub content: String,
  29   pub removed: bool,
  30   pub read: bool, // Whether the recipient has read the comment or not
  31   pub published: chrono::NaiveDateTime,
  32   pub updated: Option<chrono::NaiveDateTime>,
  33   pub deleted: bool,
  34   pub ap_id: String,
  35   pub local: bool,
  36 }
  37
  38 #[derive(Insertable, AsChangeset, Clone)]
  39 #[table_name = "comment"]
  40 pub struct CommentForm {
  41   pub creator_id: i32,
  42   pub post_id: i32,
  43   pub parent_id: Option<i32>,
  44   pub content: String,
  45   pub removed: Option<bool>,
  46   pub read: Option<bool>,
  47   pub published: Option<chrono::NaiveDateTime>,
  48   pub updated: Option<chrono::NaiveDateTime>,
  49   pub deleted: Option<bool>,
  50   pub ap_id: Option<String>,
  51   pub local: bool,
  52 }
  53
  54 impl CommentForm {
  55   pub fn get_ap_id(&self) -> Result<Url, ParseError> {
  56     Url::parse(&self.ap_id.as_ref().unwrap_or(&"not_a_url".to_string()))
  57   }
  58 }
  59
  60 impl Crud<CommentForm> for Comment {
  61   fn read(conn: &PgConnection, comment_id: i32) -> Result<Self, Error> {
  62     use crate::schema::comment::dsl::*;
  63     comment.find(comment_id).first::<Self>(conn)
  64   }
  65
  66   fn delete(conn: &PgConnection, comment_id: i32) -> Result<usize, Error> {
  67     use crate::schema::comment::dsl::*;
  68     diesel::delete(comment.find(comment_id)).execute(conn)
  69   }
  70
  71   fn create(conn: &PgConnection, comment_form: &CommentForm) -> Result<Self, Error> {
  72     use crate::schema::comment::dsl::*;
  73     insert_into(comment)
  74       .values(comment_form)
  75       .get_result::<Self>(conn)
  76   }
  77
  78   fn update(
  79     conn: &PgConnection,
  80     comment_id: i32,
  81     comment_form: &CommentForm,
  82   ) -> Result<Self, Error> {
  83     use crate::schema::comment::dsl::*;
  84     diesel::update(comment.find(comment_id))
  85       .set(comment_form)
  86       .get_result::<Self>(conn)
  87   }
  88 }
  89
  90 impl ApubObject<CommentForm> for Comment {
  91   fn read_from_apub_id(conn: &PgConnection, object_id: &str) -> Result<Self, Error> {
  92     use crate::schema::comment::dsl::*;
  93     comment.filter(ap_id.eq(object_id)).first::<Self>(conn)
  94   }
  95
  96   fn upsert(conn: &PgConnection, comment_form: &CommentForm) -> Result<Self, Error> {
  97     use crate::schema::comment::dsl::*;
  98     insert_into(comment)
  99       .values(comment_form)
 100       .on_conflict(ap_id)
 101       .do_update()
 102       .set(comment_form)
 103       .get_result::<Self>(conn)
 104   }
 105 }
 106
 107 impl Comment {
 108   pub fn update_ap_id(
 109     conn: &PgConnection,
 110     comment_id: i32,
 111     apub_id: String,
 112   ) -> Result<Self, Error> {
 113     use crate::schema::comment::dsl::*;
 114
 115     diesel::update(comment.find(comment_id))
 116       .set(ap_id.eq(apub_id))
 117       .get_result::<Self>(conn)
 118   }
 119
 120   pub fn permadelete_for_creator(
 121     conn: &PgConnection,
 122     for_creator_id: i32,
 123   ) -> Result<Vec<Self>, Error> {
 124     use crate::schema::comment::dsl::*;
 125     diesel::update(comment.filter(creator_id.eq(for_creator_id)))
 126       .set((
 127         content.eq("*Permananently Deleted*"),
 128         deleted.eq(true),
 129         updated.eq(naive_now()),
 130       ))
 131       .get_results::<Self>(conn)
 132   }
 133
 134   pub fn update_deleted(
 135     conn: &PgConnection,
 136     comment_id: i32,
 137     new_deleted: bool,
 138   ) -> Result<Self, Error> {
 139     use crate::schema::comment::dsl::*;
 140     diesel::update(comment.find(comment_id))
 141       .set((deleted.eq(new_deleted), updated.eq(naive_now())))
 142       .get_result::<Self>(conn)
 143   }
 144
 145   pub fn update_removed(
 146     conn: &PgConnection,
 147     comment_id: i32,
 148     new_removed: bool,
 149   ) -> Result<Self, Error> {
 150     use crate::schema::comment::dsl::*;
 151     diesel::update(comment.find(comment_id))
 152       .set((removed.eq(new_removed), updated.eq(naive_now())))
 153       .get_result::<Self>(conn)
 154   }
 155
 156   pub fn update_removed_for_creator(
 157     conn: &PgConnection,
 158     for_creator_id: i32,
 159     new_removed: bool,
 160   ) -> Result<Vec<Self>, Error> {
 161     use crate::schema::comment::dsl::*;
 162     diesel::update(comment.filter(creator_id.eq(for_creator_id)))
 163       .set((removed.eq(new_removed), updated.eq(naive_now())))
 164       .get_results::<Self>(conn)
 165   }
 166
 167   pub fn update_read(conn: &PgConnection, comment_id: i32, new_read: bool) -> Result<Self, Error> {
 168     use crate::schema::comment::dsl::*;
 169     diesel::update(comment.find(comment_id))
 170       .set(read.eq(new_read))
 171       .get_result::<Self>(conn)
 172   }
 173
 174   pub fn update_content(
 175     conn: &PgConnection,
 176     comment_id: i32,
 177     new_content: &str,
 178   ) -> Result<Self, Error> {
 179     use crate::schema::comment::dsl::*;
 180     diesel::update(comment.find(comment_id))
 181       .set((content.eq(new_content), updated.eq(naive_now())))
 182       .get_result::<Self>(conn)
 183   }
 184 }
 185
 186 #[derive(Identifiable, Queryable, Associations, PartialEq, Debug, Clone)]
 187 #[belongs_to(Comment)]
 188 #[table_name = "comment_like"]
 189 pub struct CommentLike {
 190   pub id: i32,
 191   pub user_id: i32,
 192   pub comment_id: i32,
 193   pub post_id: i32, // TODO this is redundant
 194   pub score: i16,
 195   pub published: chrono::NaiveDateTime,
 196 }
 197
 198 #[derive(Insertable, AsChangeset, Clone)]
 199 #[table_name = "comment_like"]
 200 pub struct CommentLikeForm {
 201   pub user_id: i32,
 202   pub comment_id: i32,
 203   pub post_id: i32, // TODO this is redundant
 204   pub score: i16,
 205 }
 206
 207 impl Likeable<CommentLikeForm> for CommentLike {
 208   fn like(conn: &PgConnection, comment_like_form: &CommentLikeForm) -> Result<Self, Error> {
 209     use crate::schema::comment_like::dsl::*;
 210     insert_into(comment_like)
 211       .values(comment_like_form)
 212       .get_result::<Self>(conn)
 213   }
 214   fn remove(conn: &PgConnection, user_id: i32, comment_id: i32) -> Result<usize, Error> {
 215     use crate::schema::comment_like::dsl;
 216     diesel::delete(
 217       dsl::comment_like
 218         .filter(dsl::comment_id.eq(comment_id))
 219         .filter(dsl::user_id.eq(user_id)),
 220     )
 221     .execute(conn)
 222   }
 223 }
 224
 225 #[derive(Identifiable, Queryable, Associations, PartialEq, Debug)]
 226 #[belongs_to(Comment)]
 227 #[table_name = "comment_saved"]
 228 pub struct CommentSaved {
 229   pub id: i32,
 230   pub comment_id: i32,
 231   pub user_id: i32,
 232   pub published: chrono::NaiveDateTime,
 233 }
 234
 235 #[derive(Insertable, AsChangeset)]
 236 #[table_name = "comment_saved"]
 237 pub struct CommentSavedForm {
 238   pub comment_id: i32,
 239   pub user_id: i32,
 240 }
 241
 242 impl Saveable<CommentSavedForm> for CommentSaved {
 243   fn save(conn: &PgConnection, comment_saved_form: &CommentSavedForm) -> Result<Self, Error> {
 244     use crate::schema::comment_saved::dsl::*;
 245     insert_into(comment_saved)
 246       .values(comment_saved_form)
 247       .get_result::<Self>(conn)
 248   }
 249   fn unsave(conn: &PgConnection, comment_saved_form: &CommentSavedForm) -> Result<usize, Error> {
 250     use crate::schema::comment_saved::dsl::*;
 251     diesel::delete(
 252       comment_saved
 253         .filter(comment_id.eq(comment_saved_form.comment_id))
 254         .filter(user_id.eq(comment_saved_form.user_id)),
 255     )
 256     .execute(conn)
 257   }
 258 }
 259
 260 #[cfg(test)]
 261 mod tests {
 262   use crate::{
 263     comment::*,
 264     community::*,
 265     post::*,
 266     tests::establish_unpooled_connection,
 267     user::*,
 268     Crud,
 269     ListingType,
 270     SortType,
 271   };
 272
 273   #[test]
 274   fn test_crud() {
 275     let conn = establish_unpooled_connection();
 276
 277     let new_user = UserForm {
 278       name: "terry".into(),
 279       preferred_username: None,
 280       password_encrypted: "nope".into(),
 281       email: None,
 282       matrix_user_id: None,
 283       avatar: None,
 284       banner: None,
 285       admin: false,
 286       banned: Some(false),
 287       published: None,
 288       updated: None,
 289       show_nsfw: false,
 290       theme: "browser".into(),
 291       default_sort_type: SortType::Hot as i16,
 292       default_listing_type: ListingType::Subscribed as i16,
 293       lang: "browser".into(),
 294       show_avatars: true,
 295       send_notifications_to_email: false,
 296       actor_id: None,
 297       bio: None,
 298       local: true,
 299       private_key: None,
 300       public_key: None,
 301       last_refreshed_at: None,
 302     };
 303
 304     let inserted_user = User_::create(&conn, &new_user).unwrap();
 305
 306     let new_community = CommunityForm {
 307       name: "test community".to_string(),
 308       title: "nada".to_owned(),
 309       description: None,
 310       category_id: 1,
 311       creator_id: inserted_user.id,
 312       removed: None,
 313       deleted: None,
 314       updated: None,
 315       nsfw: false,
 316       actor_id: None,
 317       local: true,
 318       private_key: None,
 319       public_key: None,
 320       last_refreshed_at: None,
 321       published: None,
 322       banner: None,
 323       icon: None,
 324     };
 325
 326     let inserted_community = Community::create(&conn, &new_community).unwrap();
 327
 328     let new_post = PostForm {
 329       name: "A test post".into(),
 330       creator_id: inserted_user.id,
 331       url: None,
 332       body: None,
 333       community_id: inserted_community.id,
 334       removed: None,
 335       deleted: None,
 336       locked: None,
 337       stickied: None,
 338       updated: None,
 339       nsfw: false,
 340       embed_title: None,
 341       embed_description: None,
 342       embed_html: None,
 343       thumbnail_url: None,
 344       ap_id: None,
 345       local: true,
 346       published: None,
 347     };
 348
 349     let inserted_post = Post::create(&conn, &new_post).unwrap();
 350
 351     let comment_form = CommentForm {
 352       content: "A test comment".into(),
 353       creator_id: inserted_user.id,
 354       post_id: inserted_post.id,
 355       removed: None,
 356       deleted: None,
 357       read: None,
 358       parent_id: None,
 359       published: None,
 360       updated: None,
 361       ap_id: None,
 362       local: true,
 363     };
 364
 365     let inserted_comment = Comment::create(&conn, &comment_form).unwrap();
 366
 367     let expected_comment = Comment {
 368       id: inserted_comment.id,
 369       content: "A test comment".into(),
 370       creator_id: inserted_user.id,
 371       post_id: inserted_post.id,
 372       removed: false,
 373       deleted: false,
 374       read: false,
 375       parent_id: None,
 376       published: inserted_comment.published,
 377       updated: None,
 378       ap_id: inserted_comment.ap_id.to_owned(),
 379       local: true,
 380     };
 381
 382     let child_comment_form = CommentForm {
 383       content: "A child comment".into(),
 384       creator_id: inserted_user.id,
 385       post_id: inserted_post.id,
 386       parent_id: Some(inserted_comment.id),
 387       removed: None,
 388       deleted: None,
 389       read: None,
 390       published: None,
 391       updated: None,
 392       ap_id: None,
 393       local: true,
 394     };
 395
 396     let inserted_child_comment = Comment::create(&conn, &child_comment_form).unwrap();
 397
 398     // Comment Like
 399     let comment_like_form = CommentLikeForm {
 400       comment_id: inserted_comment.id,
 401       post_id: inserted_post.id,
 402       user_id: inserted_user.id,
 403       score: 1,
 404     };
 405
 406     let inserted_comment_like = CommentLike::like(&conn, &comment_like_form).unwrap();
 407
 408     let expected_comment_like = CommentLike {
 409       id: inserted_comment_like.id,
 410       comment_id: inserted_comment.id,
 411       post_id: inserted_post.id,
 412       user_id: inserted_user.id,
 413       published: inserted_comment_like.published,
 414       score: 1,
 415     };
 416
 417     // Comment Saved
 418     let comment_saved_form = CommentSavedForm {
 419       comment_id: inserted_comment.id,
 420       user_id: inserted_user.id,
 421     };
 422
 423     let inserted_comment_saved = CommentSaved::save(&conn, &comment_saved_form).unwrap();
 424
 425     let expected_comment_saved = CommentSaved {
 426       id: inserted_comment_saved.id,
 427       comment_id: inserted_comment.id,
 428       user_id: inserted_user.id,
 429       published: inserted_comment_saved.published,
 430     };
 431
 432     let read_comment = Comment::read(&conn, inserted_comment.id).unwrap();
 433     let updated_comment = Comment::update(&conn, inserted_comment.id, &comment_form).unwrap();
 434     let like_removed = CommentLike::remove(&conn, inserted_user.id, inserted_comment.id).unwrap();
 435     let saved_removed = CommentSaved::unsave(&conn, &comment_saved_form).unwrap();
 436     let num_deleted = Comment::delete(&conn, inserted_comment.id).unwrap();
 437     Comment::delete(&conn, inserted_child_comment.id).unwrap();
 438     Post::delete(&conn, inserted_post.id).unwrap();
 439     Community::delete(&conn, inserted_community.id).unwrap();
 440     User_::delete(&conn, inserted_user.id).unwrap();
 441
 442     assert_eq!(expected_comment, read_comment);
 443     assert_eq!(expected_comment, inserted_comment);
 444     assert_eq!(expected_comment, updated_comment);
 445     assert_eq!(expected_comment_like, inserted_comment_like);
 446     assert_eq!(expected_comment_saved, inserted_comment_saved);
 447     assert_eq!(
 448       expected_comment.id,
 449       inserted_child_comment.parent_id.unwrap()
 450     );
 451     assert_eq!(1, like_removed);
 452     assert_eq!(1, saved_removed);
 453     assert_eq!(1, num_deleted);
 454   }
 455 }