lemmy/server/src/api/post.rs

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use super::*;
use std::str::FromStr;
#[derive(Serialize, Deserialize)]
pub struct CreatePost {
name: String,
url: Option<String>,
body: Option<String>,
nsfw: bool,
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community_id: i32,
auth: String,
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}
#[derive(Serialize, Deserialize, Clone)]
pub struct PostResponse {
op: String,
pub post: PostView,
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}
#[derive(Serialize, Deserialize)]
pub struct GetPost {
pub id: i32,
auth: Option<String>,
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}
#[derive(Serialize, Deserialize)]
pub struct GetPostResponse {
op: String,
post: PostView,
comments: Vec<CommentView>,
community: CommunityView,
moderators: Vec<CommunityModeratorView>,
admins: Vec<UserView>,
}
#[derive(Serialize, Deserialize)]
pub struct GetPosts {
type_: String,
sort: String,
page: Option<i64>,
limit: Option<i64>,
community_id: Option<i32>,
auth: Option<String>,
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}
#[derive(Serialize, Deserialize)]
pub struct GetPostsResponse {
op: String,
posts: Vec<PostView>,
}
#[derive(Serialize, Deserialize)]
pub struct CreatePostLike {
post_id: i32,
score: i16,
auth: String,
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}
#[derive(Serialize, Deserialize)]
pub struct CreatePostLikeResponse {
op: String,
post: PostView,
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}
#[derive(Serialize, Deserialize)]
pub struct EditPost {
pub edit_id: i32,
creator_id: i32,
community_id: i32,
name: String,
url: Option<String>,
body: Option<String>,
removed: Option<bool>,
deleted: Option<bool>,
nsfw: bool,
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locked: Option<bool>,
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stickied: Option<bool>,
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reason: Option<String>,
auth: String,
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}
#[derive(Serialize, Deserialize)]
pub struct SavePost {
post_id: i32,
save: bool,
auth: String,
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}
impl Perform<PostResponse> for Oper<CreatePost> {
fn perform(&self) -> Result<PostResponse, Error> {
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let data: &CreatePost = &self.data;
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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"))?,
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};
if has_slurs(&data.name) || (data.body.is_some() && has_slurs(&data.body.to_owned().unwrap())) {
return Err(APIError::err(&self.op, "no_slurs"))?;
}
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let user_id = claims.id;
// Check for a community ban
if CommunityUserBanView::get(&conn, user_id, data.community_id).is_ok() {
return Err(APIError::err(&self.op, "community_ban"))?;
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}
// Check for a site ban
if UserView::read(&conn, user_id)?.banned {
return Err(APIError::err(&self.op, "site_ban"))?;
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}
let post_form = PostForm {
name: data.name.to_owned(),
url: data.url.to_owned(),
body: data.body.to_owned(),
community_id: data.community_id,
creator_id: user_id,
removed: None,
deleted: None,
nsfw: data.nsfw,
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locked: None,
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stickied: None,
updated: None,
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};
let inserted_post = match Post::create(&conn, &post_form) {
Ok(post) => post,
Err(_e) => return Err(APIError::err(&self.op, "couldnt_create_post"))?,
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};
// They like their own post by default
let like_form = PostLikeForm {
post_id: inserted_post.id,
user_id,
score: 1,
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};
// Only add the like if the score isnt 0
let _inserted_like = match PostLike::like(&conn, &like_form) {
Ok(like) => like,
Err(_e) => return Err(APIError::err(&self.op, "couldnt_like_post"))?,
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};
// Refetch the view
let post_view = match PostView::read(&conn, inserted_post.id, Some(user_id)) {
Ok(post) => post,
Err(_e) => return Err(APIError::err(&self.op, "couldnt_find_post"))?,
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};
Ok(PostResponse {
op: self.op.to_string(),
post: post_view,
})
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}
}
impl Perform<GetPostResponse> for Oper<GetPost> {
fn perform(&self) -> Result<GetPostResponse, Error> {
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let data: &GetPost = &self.data;
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let conn = establish_connection();
let user_id: Option<i32> = match &data.auth {
Some(auth) => match Claims::decode(&auth) {
Ok(claims) => {
let user_id = claims.claims.id;
Some(user_id)
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}
Err(_e) => None,
},
None => None,
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};
let post_view = match PostView::read(&conn, data.id, user_id) {
Ok(post) => post,
Err(_e) => return Err(APIError::err(&self.op, "couldnt_find_post"))?,
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};
let comments = CommentQueryBuilder::create(&conn)
.for_post_id(data.id)
.my_user_id(user_id)
.limit(9999)
.list()?;
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let community = CommunityView::read(&conn, post_view.community_id, user_id)?;
let moderators = CommunityModeratorView::for_community(&conn, post_view.community_id)?;
let site_creator_id = Site::read(&conn, 1)?.creator_id;
let mut admins = UserView::admins(&conn)?;
let creator_index = admins.iter().position(|r| r.id == site_creator_id).unwrap();
let creator_user = admins.remove(creator_index);
admins.insert(0, creator_user);
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// Return the jwt
Ok(GetPostResponse {
op: self.op.to_string(),
post: post_view,
comments,
community,
moderators,
admins,
})
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}
}
impl Perform<GetPostsResponse> for Oper<GetPosts> {
fn perform(&self) -> Result<GetPostsResponse, Error> {
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let data: &GetPosts = &self.data;
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let conn = establish_connection();
let user_claims: Option<Claims> = match &data.auth {
Some(auth) => match Claims::decode(&auth) {
Ok(claims) => Some(claims.claims),
Err(_e) => None,
},
None => None,
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};
let user_id = match &user_claims {
Some(claims) => Some(claims.id),
None => None,
};
let show_nsfw = match &user_claims {
Some(claims) => claims.show_nsfw,
None => false,
};
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let type_ = ListingType::from_str(&data.type_)?;
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let sort = SortType::from_str(&data.sort)?;
let posts = match PostQueryBuilder::create(&conn)
.listing_type(type_)
.sort(&sort)
.show_nsfw(show_nsfw)
.for_community_id(data.community_id)
.my_user_id(user_id)
.page(data.page)
.limit(data.limit)
.list()
{
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Ok(posts) => posts,
Err(_e) => return Err(APIError::err(&self.op, "couldnt_get_posts"))?,
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};
Ok(GetPostsResponse {
op: self.op.to_string(),
posts,
})
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}
}
impl Perform<CreatePostLikeResponse> for Oper<CreatePostLike> {
fn perform(&self) -> Result<CreatePostLikeResponse, Error> {
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let data: &CreatePostLike = &self.data;
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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"))?,
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};
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, "community_ban"))?;
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}
// Check for a site ban
if UserView::read(&conn, user_id)?.banned {
return Err(APIError::err(&self.op, "site_ban"))?;
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}
let like_form = PostLikeForm {
post_id: data.post_id,
user_id,
score: data.score,
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};
// Remove any likes first
PostLike::remove(&conn, &like_form)?;
// Only add the like if the score isnt 0
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let do_add = &like_form.score != &0 && (&like_form.score == &1 || &like_form.score == &-1);
if do_add {
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let _inserted_like = match PostLike::like(&conn, &like_form) {
Ok(like) => like,
Err(_e) => return Err(APIError::err(&self.op, "couldnt_like_post"))?,
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};
}
let post_view = match PostView::read(&conn, data.post_id, Some(user_id)) {
Ok(post) => post,
Err(_e) => return Err(APIError::err(&self.op, "couldnt_find_post"))?,
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};
// just output the score
Ok(CreatePostLikeResponse {
op: self.op.to_string(),
post: post_view,
})
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}
}
impl Perform<PostResponse> for Oper<EditPost> {
fn perform(&self) -> Result<PostResponse, Error> {
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let data: &EditPost = &self.data;
if has_slurs(&data.name) || (data.body.is_some() && has_slurs(&data.body.to_owned().unwrap())) {
return Err(APIError::err(&self.op, "no_slurs"))?;
}
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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"))?,
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};
let user_id = claims.id;
// Verify its the creator or a mod or admin
let mut editors: Vec<i32> = vec![data.creator_id];
editors.append(
&mut CommunityModeratorView::for_community(&conn, data.community_id)?
.into_iter()
.map(|m| m.user_id)
.collect(),
);
editors.append(&mut UserView::admins(&conn)?.into_iter().map(|a| a.id).collect());
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if !editors.contains(&user_id) {
return Err(APIError::err(&self.op, "no_post_edit_allowed"))?;
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}
// Check for a community ban
if CommunityUserBanView::get(&conn, user_id, data.community_id).is_ok() {
return Err(APIError::err(&self.op, "community_ban"))?;
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}
// Check for a site ban
if UserView::read(&conn, user_id)?.banned {
return Err(APIError::err(&self.op, "site_ban"))?;
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}
let post_form = PostForm {
name: data.name.to_owned(),
url: data.url.to_owned(),
body: data.body.to_owned(),
creator_id: data.creator_id.to_owned(),
community_id: data.community_id,
removed: data.removed.to_owned(),
deleted: data.deleted.to_owned(),
nsfw: data.nsfw,
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locked: data.locked.to_owned(),
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stickied: data.stickied.to_owned(),
updated: Some(naive_now()),
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};
let _updated_post = match Post::update(&conn, data.edit_id, &post_form) {
Ok(post) => post,
Err(_e) => return Err(APIError::err(&self.op, "couldnt_update_post"))?,
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};
// Mod tables
if let Some(removed) = data.removed.to_owned() {
let form = ModRemovePostForm {
mod_user_id: user_id,
post_id: data.edit_id,
removed: Some(removed),
reason: data.reason.to_owned(),
};
ModRemovePost::create(&conn, &form)?;
}
if let Some(locked) = data.locked.to_owned() {
let form = ModLockPostForm {
mod_user_id: user_id,
post_id: data.edit_id,
locked: Some(locked),
};
ModLockPost::create(&conn, &form)?;
}
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if let Some(stickied) = data.stickied.to_owned() {
let form = ModStickyPostForm {
mod_user_id: user_id,
post_id: data.edit_id,
stickied: Some(stickied),
};
ModStickyPost::create(&conn, &form)?;
}
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let post_view = PostView::read(&conn, data.edit_id, Some(user_id))?;
Ok(PostResponse {
op: self.op.to_string(),
post: post_view,
})
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}
}
impl Perform<PostResponse> for Oper<SavePost> {
fn perform(&self) -> Result<PostResponse, Error> {
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let data: &SavePost = &self.data;
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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"))?,
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};
let user_id = claims.id;
let post_saved_form = PostSavedForm {
post_id: data.post_id,
user_id,
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};
if data.save {
match PostSaved::save(&conn, &post_saved_form) {
Ok(post) => post,
Err(_e) => return Err(APIError::err(&self.op, "couldnt_save_post"))?,
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};
} else {
match PostSaved::unsave(&conn, &post_saved_form) {
Ok(post) => post,
Err(_e) => return Err(APIError::err(&self.op, "couldnt_save_post"))?,
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};
}
let post_view = PostView::read(&conn, data.post_id, Some(user_id))?;
Ok(PostResponse {
op: self.op.to_string(),
post: post_view,
})
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}
}