mirror of
https://github.com/LemmyNet/lemmy.git
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306 lines
8.6 KiB
Rust
306 lines
8.6 KiB
Rust
extern crate diesel;
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use schema::{comment, comment_like};
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use diesel::*;
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use diesel::result::Error;
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use serde::{Deserialize, Serialize};
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use {Crud, Likeable};
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use actions::post::Post;
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// WITH RECURSIVE MyTree AS (
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// SELECT * FROM comment WHERE parent_id IS NULL
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// UNION ALL
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// SELECT m.* FROM comment AS m JOIN MyTree AS t ON m.parent_id = t.id
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// )
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// SELECT * FROM MyTree;
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#[derive(Queryable, Associations, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
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#[belongs_to(Post)]
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#[table_name="comment"]
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pub struct Comment {
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pub id: i32,
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pub content: String,
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pub attributed_to: String,
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pub post_id: i32,
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pub parent_id: Option<i32>,
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pub published: chrono::NaiveDateTime,
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pub updated: Option<chrono::NaiveDateTime>
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}
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#[derive(Insertable, AsChangeset, Clone)]
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#[table_name="comment"]
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pub struct CommentForm {
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pub content: String,
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pub attributed_to: String,
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pub post_id: i32,
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pub parent_id: Option<i32>,
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pub updated: Option<chrono::NaiveDateTime>
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}
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#[derive(Identifiable, Queryable, Associations, PartialEq, Debug, Clone)]
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#[belongs_to(Comment)]
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#[table_name = "comment_like"]
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pub struct CommentLike {
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pub id: i32,
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pub comment_id: i32,
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pub post_id: i32,
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pub fedi_user_id: String,
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pub score: i16,
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pub published: chrono::NaiveDateTime,
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}
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#[derive(Insertable, AsChangeset, Clone)]
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#[table_name="comment_like"]
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pub struct CommentLikeForm {
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pub comment_id: i32,
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pub post_id: i32,
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pub fedi_user_id: String,
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pub score: i16
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}
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impl Crud<CommentForm> for Comment {
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fn read(conn: &PgConnection, comment_id: i32) -> Result<Self, Error> {
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use schema::comment::dsl::*;
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comment.find(comment_id)
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.first::<Self>(conn)
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}
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fn delete(conn: &PgConnection, comment_id: i32) -> Result<usize, Error> {
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use schema::comment::dsl::*;
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diesel::delete(comment.find(comment_id))
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.execute(conn)
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}
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fn create(conn: &PgConnection, comment_form: &CommentForm) -> Result<Self, Error> {
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use schema::comment::dsl::*;
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insert_into(comment)
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.values(comment_form)
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.get_result::<Self>(conn)
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}
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fn update(conn: &PgConnection, comment_id: i32, comment_form: &CommentForm) -> Result<Self, Error> {
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use schema::comment::dsl::*;
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diesel::update(comment.find(comment_id))
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.set(comment_form)
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.get_result::<Self>(conn)
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}
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}
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impl Likeable <CommentLikeForm> for CommentLike {
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fn read(conn: &PgConnection, comment_id_from: i32) -> Result<Vec<Self>, Error> {
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use schema::comment_like::dsl::*;
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comment_like
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.filter(comment_id.eq(comment_id_from))
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.load::<Self>(conn)
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}
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fn like(conn: &PgConnection, comment_like_form: &CommentLikeForm) -> Result<Self, Error> {
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use schema::comment_like::dsl::*;
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insert_into(comment_like)
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.values(comment_like_form)
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.get_result::<Self>(conn)
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}
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fn remove(conn: &PgConnection, comment_like_form: &CommentLikeForm) -> Result<usize, Error> {
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use schema::comment_like::dsl::*;
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diesel::delete(comment_like
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.filter(comment_id.eq(comment_like_form.comment_id))
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.filter(fedi_user_id.eq(&comment_like_form.fedi_user_id)))
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.execute(conn)
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}
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}
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impl CommentLike {
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pub fn from_post(conn: &PgConnection, post_id_from: i32) -> Result<Vec<Self>, Error> {
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use schema::comment_like::dsl::*;
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comment_like
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.filter(post_id.eq(post_id_from))
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.load::<Self>(conn)
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}
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}
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impl Comment {
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fn from_post(conn: &PgConnection, post_id_from: i32) -> Result<Vec<Self>, Error> {
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use schema::comment::dsl::*;
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comment
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.filter(post_id.eq(post_id_from))
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.order_by(published.desc())
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.load::<Self>(conn)
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}
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}
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#[derive(Debug, Serialize, Deserialize, Clone)]
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pub struct CommentView {
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pub id: i32,
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pub content: String,
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pub attributed_to: String,
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pub post_id: i32,
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pub parent_id: Option<i32>,
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pub published: chrono::NaiveDateTime,
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pub updated: Option<chrono::NaiveDateTime>,
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pub score: i32,
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pub upvotes: i32,
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pub downvotes: i32,
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pub my_vote: Option<i16>
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}
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impl CommentView {
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pub fn from_comment(comment: &Comment, likes: &Vec<CommentLike>, fedi_user_id: &Option<String>) -> Self {
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let mut upvotes: i32 = 0;
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let mut downvotes: i32 = 0;
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let mut my_vote: Option<i16> = Some(0);
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for like in likes.iter() {
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if like.score == 1 {
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upvotes += 1
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} else if like.score == -1 {
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downvotes += 1;
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}
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if let Some(user) = fedi_user_id {
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if like.fedi_user_id == *user {
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my_vote = Some(like.score);
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}
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}
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}
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let score: i32 = upvotes - downvotes;
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CommentView {
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id: comment.id,
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content: comment.content.to_owned(),
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parent_id: comment.parent_id,
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post_id: comment.post_id,
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attributed_to: comment.attributed_to.to_owned(),
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published: comment.published,
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updated: comment.updated,
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upvotes: upvotes,
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score: score,
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downvotes: downvotes,
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my_vote: my_vote
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}
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}
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pub fn read(conn: &PgConnection, comment_id: i32, fedi_user_id: &Option<String>) -> Self {
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let comment = Comment::read(&conn, comment_id).unwrap();
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let likes = CommentLike::read(&conn, comment_id).unwrap();
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Self::from_comment(&comment, &likes, fedi_user_id)
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}
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pub fn from_post(conn: &PgConnection, post_id: i32, fedi_user_id: &Option<String>) -> Vec<Self> {
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let comments = Comment::from_post(&conn, post_id).unwrap();
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let post_comment_likes = CommentLike::from_post(&conn, post_id).unwrap();
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let mut views = Vec::new();
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for comment in comments.iter() {
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let comment_likes: Vec<CommentLike> = post_comment_likes
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.iter()
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.filter(|like| comment.id == like.comment_id)
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.cloned()
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.collect();
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let comment_view = CommentView::from_comment(&comment, &comment_likes, fedi_user_id);
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views.push(comment_view);
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};
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views
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}
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}
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#[cfg(test)]
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mod tests {
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use establish_connection;
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use super::*;
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use actions::post::*;
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use actions::community::*;
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use Crud;
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#[test]
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fn test_crud() {
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let conn = establish_connection();
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let new_community = CommunityForm {
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name: "test community".to_string(),
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updated: None
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};
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let inserted_community = Community::create(&conn, &new_community).unwrap();
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let new_post = PostForm {
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name: "A test post".into(),
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url: None,
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body: None,
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attributed_to: "test_user.com".into(),
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community_id: inserted_community.id,
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updated: None
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};
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let inserted_post = Post::create(&conn, &new_post).unwrap();
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let comment_form = CommentForm {
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content: "A test comment".into(),
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attributed_to: "test_user.com".into(),
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post_id: inserted_post.id,
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parent_id: None,
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updated: None
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};
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let inserted_comment = Comment::create(&conn, &comment_form).unwrap();
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let expected_comment = Comment {
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id: inserted_comment.id,
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content: "A test comment".into(),
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attributed_to: "test_user.com".into(),
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post_id: inserted_post.id,
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parent_id: None,
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published: inserted_comment.published,
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updated: None
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};
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let child_comment_form = CommentForm {
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content: "A child comment".into(),
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attributed_to: "test_user.com".into(),
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post_id: inserted_post.id,
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parent_id: Some(inserted_comment.id),
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updated: None
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};
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let inserted_child_comment = Comment::create(&conn, &child_comment_form).unwrap();
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let comment_like_form = CommentLikeForm {
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comment_id: inserted_comment.id,
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post_id: inserted_post.id,
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fedi_user_id: "test".into(),
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score: 1
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};
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let inserted_comment_like = CommentLike::like(&conn, &comment_like_form).unwrap();
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let expected_comment_like = CommentLike {
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id: inserted_comment_like.id,
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comment_id: inserted_comment.id,
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post_id: inserted_post.id,
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fedi_user_id: "test".into(),
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published: inserted_comment_like.published,
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score: 1
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};
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let read_comment = Comment::read(&conn, inserted_comment.id).unwrap();
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let updated_comment = Comment::update(&conn, inserted_comment.id, &comment_form).unwrap();
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let like_removed = CommentLike::remove(&conn, &comment_like_form).unwrap();
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let num_deleted = Comment::delete(&conn, inserted_comment.id).unwrap();
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Comment::delete(&conn, inserted_child_comment.id).unwrap();
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Post::delete(&conn, inserted_post.id).unwrap();
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Community::delete(&conn, inserted_community.id).unwrap();
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assert_eq!(expected_comment, read_comment);
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assert_eq!(expected_comment, inserted_comment);
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assert_eq!(expected_comment, updated_comment);
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assert_eq!(expected_comment_like, inserted_comment_like);
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assert_eq!(expected_comment.id, inserted_child_comment.parent_id.unwrap());
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assert_eq!(1, like_removed);
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assert_eq!(1, num_deleted);
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}
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}
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