lemmy/server/src/api/comment.rs

317 lines
8.1 KiB
Rust
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2019-05-05 05:20:38 +00:00
use super::*;
#[derive(Serialize, Deserialize)]
pub struct CreateComment {
content: String,
parent_id: Option<i32>,
edit_id: Option<i32>,
pub post_id: i32,
auth: String
}
#[derive(Serialize, Deserialize)]
pub struct EditComment {
content: String,
parent_id: Option<i32>,
edit_id: i32,
creator_id: i32,
pub post_id: i32,
removed: Option<bool>,
deleted: Option<bool>,
reason: Option<String>,
read: Option<bool>,
auth: String
}
#[derive(Serialize, Deserialize)]
pub struct SaveComment {
comment_id: i32,
save: bool,
auth: String
}
#[derive(Serialize, Deserialize, Clone)]
pub struct CommentResponse {
op: String,
pub comment: CommentView
}
#[derive(Serialize, Deserialize)]
pub struct CreateCommentLike {
comment_id: i32,
pub post_id: i32,
score: i16,
auth: String
}
impl Perform<CommentResponse> for Oper<CreateComment> {
fn perform(&self) -> Result<CommentResponse, Error> {
let data: CreateComment = self.data;
let conn = establish_connection();
let claims = match Claims::decode(&data.auth) {
Ok(claims) => claims.claims,
Err(_e) => {
return Err(APIError::err(self.op, "Not logged in."))?
}
};
let user_id = claims.id;
// Check for a community ban
let post = Post::read(&conn, data.post_id)?;
if CommunityUserBanView::get(&conn, user_id, post.community_id).is_ok() {
return Err(APIError::err(self.op, "You have been banned from this community"))?
}
// Check for a site ban
if UserView::read(&conn, user_id)?.banned {
return Err(APIError::err(self.op, "You have been banned from the site"))?
}
let content_slurs_removed = remove_slurs(&data.content.to_owned());
let comment_form = CommentForm {
content: content_slurs_removed,
parent_id: data.parent_id.to_owned(),
post_id: data.post_id,
creator_id: user_id,
removed: None,
deleted: None,
read: None,
updated: None
};
let inserted_comment = match Comment::create(&conn, &comment_form) {
Ok(comment) => comment,
Err(_e) => {
return Err(APIError::err(self.op, "Couldn't create Comment"))?
}
};
// You like your own comment by default
let like_form = CommentLikeForm {
comment_id: inserted_comment.id,
post_id: data.post_id,
user_id: user_id,
score: 1
};
let _inserted_like = match CommentLike::like(&conn, &like_form) {
Ok(like) => like,
Err(_e) => {
return Err(APIError::err(self.op, "Couldn't like comment."))?
}
};
let comment_view = CommentView::read(&conn, inserted_comment.id, Some(user_id))?;
Ok(
CommentResponse {
op: self.op.to_string(),
comment: comment_view
}
)
}
}
impl Perform<CommentResponse> for Oper<EditComment> {
fn perform(&self) -> Result<CommentResponse, Error> {
let data: EditComment = self.data;
let conn = establish_connection();
let claims = match Claims::decode(&data.auth) {
Ok(claims) => claims.claims,
Err(_e) => {
return Err(APIError::err(self.op, "Not logged in."))?
}
};
let user_id = claims.id;
let orig_comment = CommentView::read(&conn, data.edit_id, None)?;
// You are allowed to mark the comment as read even if you're banned.
if data.read.is_none() {
// Verify its the creator or a mod, or an admin
let mut editors: Vec<i32> = vec![data.creator_id];
editors.append(
&mut CommunityModeratorView::for_community(&conn, orig_comment.community_id)
?
.into_iter()
.map(|m| m.user_id)
.collect()
);
editors.append(
&mut UserView::admins(&conn)
?
.into_iter()
.map(|a| a.id)
.collect()
);
if !editors.contains(&user_id) {
return Err(APIError::err(self.op, "Not allowed to edit comment."))?
}
// Check for a community ban
if CommunityUserBanView::get(&conn, user_id, orig_comment.community_id).is_ok() {
return Err(APIError::err(self.op, "You have been banned from this community"))?
}
// Check for a site ban
if UserView::read(&conn, user_id)?.banned {
return Err(APIError::err(self.op, "You have been banned from the site"))?
}
}
let content_slurs_removed = remove_slurs(&data.content.to_owned());
let comment_form = CommentForm {
content: content_slurs_removed,
parent_id: data.parent_id,
post_id: data.post_id,
creator_id: data.creator_id,
removed: data.removed.to_owned(),
deleted: data.deleted.to_owned(),
read: data.read.to_owned(),
updated: if data.read.is_some() { orig_comment.updated } else {Some(naive_now())}
};
let _updated_comment = match Comment::update(&conn, data.edit_id, &comment_form) {
Ok(comment) => comment,
Err(_e) => {
return Err(APIError::err(self.op, "Couldn't update Comment"))?
}
};
// Mod tables
if let Some(removed) = data.removed.to_owned() {
let form = ModRemoveCommentForm {
mod_user_id: user_id,
comment_id: data.edit_id,
removed: Some(removed),
reason: data.reason.to_owned(),
};
ModRemoveComment::create(&conn, &form)?;
}
let comment_view = CommentView::read(&conn, data.edit_id, Some(user_id))?;
Ok(
CommentResponse {
op: self.op.to_string(),
comment: comment_view
}
)
}
}
impl Perform<CommentResponse> for Oper<SaveComment> {
fn perform(&self) -> Result<CommentResponse, Error> {
let data: SaveComment = self.data;
let conn = establish_connection();
let claims = match Claims::decode(&data.auth) {
Ok(claims) => claims.claims,
Err(_e) => {
return Err(APIError::err(self.op, "Not logged in."))?
}
};
let user_id = claims.id;
let comment_saved_form = CommentSavedForm {
comment_id: data.comment_id,
user_id: user_id,
};
if data.save {
match CommentSaved::save(&conn, &comment_saved_form) {
Ok(comment) => comment,
Err(_e) => {
return Err(APIError::err(self.op, "Couldnt do comment save"))?
}
};
} else {
match CommentSaved::unsave(&conn, &comment_saved_form) {
Ok(comment) => comment,
Err(_e) => {
return Err(APIError::err(self.op, "Couldnt do comment save"))?
}
};
}
let comment_view = CommentView::read(&conn, data.comment_id, Some(user_id))?;
Ok(
CommentResponse {
op: self.op.to_string(),
comment: comment_view
}
)
}
}
impl Perform<CommentResponse> for Oper<CreateCommentLike> {
fn perform(&self) -> Result<CommentResponse, Error> {
let data: CreateCommentLike = self.data;
let conn = establish_connection();
let claims = match Claims::decode(&data.auth) {
Ok(claims) => claims.claims,
Err(_e) => {
return Err(APIError::err(self.op, "Not logged in."))?
}
};
let user_id = claims.id;
// Check for a community ban
let post = Post::read(&conn, data.post_id)?;
if CommunityUserBanView::get(&conn, user_id, post.community_id).is_ok() {
return Err(APIError::err(self.op, "You have been banned from this community"))?
}
// Check for a site ban
if UserView::read(&conn, user_id)?.banned {
return Err(APIError::err(self.op, "You have been banned from the site"))?
}
let like_form = CommentLikeForm {
comment_id: data.comment_id,
post_id: data.post_id,
user_id: user_id,
score: data.score
};
// Remove any likes first
CommentLike::remove(&conn, &like_form)?;
// Only add the like if the score isnt 0
if &like_form.score != &0 {
let _inserted_like = match CommentLike::like(&conn, &like_form) {
Ok(like) => like,
Err(_e) => {
return Err(APIError::err(self.op, "Couldn't like comment."))?
}
};
}
// Have to refetch the comment to get the current state
let liked_comment = CommentView::read(&conn, data.comment_id, Some(user_id))?;
Ok(
CommentResponse {
op: self.op.to_string(),
comment: liked_comment
}
)
}
}