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extern crate diesel;
use schema::{comment, comment_like};
use diesel::*;
use diesel::result::Error;
use serde::{Deserialize, Serialize};
use {Crud, Likeable};
use actions::post::Post;
// WITH RECURSIVE MyTree AS (
// SELECT * FROM comment WHERE parent_id IS NULL
// UNION ALL
// SELECT m.* FROM comment AS m JOIN MyTree AS t ON m.parent_id = t.id
// )
// SELECT * FROM MyTree;
#[derive(Queryable, Associations, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
#[belongs_to(Post)]
#[table_name="comment"]
pub struct Comment {
pub id: i32,
pub content: String,
pub attributed_to: String,
pub post_id: i32,
pub parent_id: Option<i32>,
pub published: chrono::NaiveDateTime,
pub updated: Option<chrono::NaiveDateTime>
}
#[derive(Insertable, AsChangeset, Clone)]
#[table_name="comment"]
pub struct CommentForm {
pub content: String,
pub attributed_to: String,
pub post_id: i32,
pub parent_id: Option<i32>,
pub updated: Option<chrono::NaiveDateTime>
}
#[derive(Identifiable, Queryable, Associations, PartialEq, Debug)]
#[belongs_to(Comment)]
#[table_name = "comment_like"]
pub struct CommentLike {
pub id: i32,
pub comment_id: i32,
pub fedi_user_id: String,
pub score: i16,
pub published: chrono::NaiveDateTime,
}
#[derive(Insertable, AsChangeset, Clone)]
#[table_name="comment_like"]
pub struct CommentLikeForm {
pub comment_id: i32,
pub fedi_user_id: String,
pub score: i16
}
impl Crud<CommentForm> for Comment {
fn read(conn: &PgConnection, comment_id: i32) -> Result<Self, Error> {
use schema::comment::dsl::*;
comment.find(comment_id)
.first::<Self>(conn)
}
fn delete(conn: &PgConnection, comment_id: i32) -> Result<usize, Error> {
use schema::comment::dsl::*;
diesel::delete(comment.find(comment_id))
.execute(conn)
}
fn create(conn: &PgConnection, comment_form: &CommentForm) -> Result<Self, Error> {
use schema::comment::dsl::*;
insert_into(comment)
.values(comment_form)
.get_result::<Self>(conn)
}
fn update(conn: &PgConnection, comment_id: i32, comment_form: &CommentForm) -> Result<Self, Error> {
use schema::comment::dsl::*;
diesel::update(comment.find(comment_id))
.set(comment_form)
.get_result::<Self>(conn)
}
}
impl Likeable <CommentLikeForm> for CommentLike {
fn like(conn: &PgConnection, comment_like_form: &CommentLikeForm) -> Result<Self, Error> {
use schema::comment_like::dsl::*;
insert_into(comment_like)
.values(comment_like_form)
.get_result::<Self>(conn)
}
fn remove(conn: &PgConnection, comment_like_form: &CommentLikeForm) -> Result<usize, Error> {
use schema::comment_like::dsl::*;
diesel::delete(comment_like
.filter(comment_id.eq(comment_like_form.comment_id))
.filter(fedi_user_id.eq(&comment_like_form.fedi_user_id)))
.execute(conn)
}
}
impl Comment {
pub fn from_post(conn: &PgConnection, post: &Post) -> Result<Vec<Self>, Error> {
use schema::community::dsl::*;
Comment::belonging_to(post)
.load::<Self>(conn)
}
}
#[cfg(test)]
mod tests {
use establish_connection;
use super::*;
use actions::post::*;
use actions::community::*;
use Crud;
#[test]
fn test_crud() {
let conn = establish_connection();
let new_community = CommunityForm {
name: "test community".to_string(),
updated: None
};
let inserted_community = Community::create(&conn, &new_community).unwrap();
let new_post = PostForm {
name: "A test post".into(),
url: None,
body: None,
attributed_to: "test_user.com".into(),
community_id: inserted_community.id,
updated: None
};
let inserted_post = Post::create(&conn, &new_post).unwrap();
let comment_form = CommentForm {
content: "A test comment".into(),
attributed_to: "test_user.com".into(),
post_id: inserted_post.id,
parent_id: None,
updated: None
};
let inserted_comment = Comment::create(&conn, &comment_form).unwrap();
let expected_comment = Comment {
id: inserted_comment.id,
content: "A test comment".into(),
attributed_to: "test_user.com".into(),
post_id: inserted_post.id,
parent_id: None,
published: inserted_comment.published,
updated: None
};
let child_comment_form = CommentForm {
content: "A child comment".into(),
attributed_to: "test_user.com".into(),
post_id: inserted_post.id,
parent_id: Some(inserted_comment.id),
updated: None
};
let inserted_child_comment = Comment::create(&conn, &child_comment_form).unwrap();
let comment_like_form = CommentLikeForm {
comment_id: inserted_comment.id,
fedi_user_id: "test".into(),
score: 1
};
let inserted_comment_like = CommentLike::like(&conn, &comment_like_form).unwrap();
let expected_comment_like = CommentLike {
id: inserted_comment_like.id,
comment_id: inserted_comment.id,
fedi_user_id: "test".into(),
published: inserted_comment_like.published,
score: 1
};
let read_comment = Comment::read(&conn, inserted_comment.id).unwrap();
let updated_comment = Comment::update(&conn, inserted_comment.id, &comment_form).unwrap();
let like_removed = CommentLike::remove(&conn, &comment_like_form).unwrap();
let num_deleted = Comment::delete(&conn, inserted_comment.id).unwrap();
Comment::delete(&conn, inserted_child_comment.id).unwrap();
Post::delete(&conn, inserted_post.id).unwrap();
Community::delete(&conn, inserted_community.id).unwrap();
assert_eq!(expected_comment, read_comment);
assert_eq!(expected_comment, inserted_comment);
assert_eq!(expected_comment, updated_comment);
assert_eq!(expected_comment_like, inserted_comment_like);
assert_eq!(expected_comment.id, inserted_child_comment.parent_id.unwrap());
assert_eq!(1, like_removed);
assert_eq!(1, num_deleted);
}
}
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