lemmy/server/src/api/community.rs

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use super::*;
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use crate::{
api::{claims::Claims, APIError, Oper, Perform},
apub::ActorType,
blocking,
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websocket::{
server::{JoinCommunityRoom, SendCommunityRoomMessage},
UserOperation,
WebsocketInfo,
},
DbPool,
};
use lemmy_db::{naive_now, Bannable, Crud, Followable, Joinable, SortType};
use lemmy_utils::{
generate_actor_keypair,
is_valid_community_name,
make_apub_endpoint,
naive_from_unix,
slur_check,
slurs_vec_to_str,
EndpointType,
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};
use serde::{Deserialize, Serialize};
use std::str::FromStr;
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#[derive(Serialize, Deserialize)]
pub struct GetCommunity {
id: Option<i32>,
pub name: Option<String>,
auth: Option<String>,
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}
#[derive(Serialize, Deserialize)]
pub struct GetCommunityResponse {
pub community: CommunityView,
pub moderators: Vec<CommunityModeratorView>,
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pub admins: Vec<UserView>, // TODO this should be from GetSite, shouldn't need this
pub online: usize,
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}
#[derive(Serialize, Deserialize)]
pub struct CreateCommunity {
name: String,
title: String,
description: Option<String>,
category_id: i32,
nsfw: bool,
auth: String,
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}
#[derive(Serialize, Deserialize, Clone)]
pub struct CommunityResponse {
pub community: CommunityView,
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}
#[derive(Serialize, Deserialize, Debug)]
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pub struct ListCommunities {
pub sort: String,
pub page: Option<i64>,
pub limit: Option<i64>,
pub auth: Option<String>,
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}
#[derive(Serialize, Deserialize, Debug)]
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pub struct ListCommunitiesResponse {
pub communities: Vec<CommunityView>,
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}
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#[derive(Serialize, Deserialize, Clone)]
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pub struct BanFromCommunity {
pub community_id: i32,
user_id: i32,
ban: bool,
reason: Option<String>,
expires: Option<i64>,
auth: String,
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}
#[derive(Serialize, Deserialize, Clone)]
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pub struct BanFromCommunityResponse {
user: UserView,
banned: bool,
}
#[derive(Serialize, Deserialize)]
pub struct AddModToCommunity {
pub community_id: i32,
user_id: i32,
added: bool,
auth: String,
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}
#[derive(Serialize, Deserialize, Clone)]
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pub struct AddModToCommunityResponse {
moderators: Vec<CommunityModeratorView>,
}
#[derive(Serialize, Deserialize)]
pub struct EditCommunity {
pub edit_id: i32,
title: String,
description: Option<String>,
category_id: i32,
nsfw: bool,
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auth: String,
}
#[derive(Serialize, Deserialize)]
pub struct DeleteCommunity {
pub edit_id: i32,
deleted: bool,
auth: String,
}
#[derive(Serialize, Deserialize)]
pub struct RemoveCommunity {
pub edit_id: i32,
removed: bool,
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reason: Option<String>,
expires: Option<i64>,
auth: String,
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}
#[derive(Serialize, Deserialize)]
pub struct FollowCommunity {
community_id: i32,
follow: bool,
auth: String,
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}
#[derive(Serialize, Deserialize)]
pub struct GetFollowedCommunities {
auth: String,
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}
#[derive(Serialize, Deserialize)]
pub struct GetFollowedCommunitiesResponse {
communities: Vec<CommunityFollowerView>,
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}
#[derive(Serialize, Deserialize)]
pub struct TransferCommunity {
community_id: i32,
user_id: i32,
auth: String,
}
#[async_trait::async_trait(?Send)]
impl Perform for Oper<GetCommunity> {
type Response = GetCommunityResponse;
async fn perform(
&self,
pool: &DbPool,
websocket_info: Option<WebsocketInfo>,
) -> Result<GetCommunityResponse, LemmyError> {
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let data: &GetCommunity = &self.data;
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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 name = data.name.to_owned().unwrap_or_else(|| "main".to_string());
let community = match data.id {
Some(id) => blocking(pool, move |conn| Community::read(conn, id)).await??,
None => match blocking(pool, move |conn| Community::read_from_name(conn, &name)).await? {
Ok(community) => community,
Err(_e) => return Err(APIError::err("couldnt_find_community").into()),
},
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};
let community_id = community.id;
let community_view = match blocking(pool, move |conn| {
CommunityView::read(conn, community_id, user_id)
})
.await?
{
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Ok(community) => community,
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Err(_e) => return Err(APIError::err("couldnt_find_community").into()),
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};
let community_id = community.id;
let moderators: Vec<CommunityModeratorView> = match blocking(pool, move |conn| {
CommunityModeratorView::for_community(conn, community_id)
})
.await?
{
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Ok(moderators) => moderators,
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Err(_e) => return Err(APIError::err("couldnt_find_community").into()),
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};
let site = blocking(pool, move |conn| Site::read(conn, 1)).await??;
let site_creator_id = site.creator_id;
let mut admins = blocking(pool, move |conn| UserView::admins(conn)).await??;
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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let online = if let Some(ws) = websocket_info {
if let Some(id) = ws.id {
ws.chatserver.do_send(JoinCommunityRoom {
community_id: community.id,
id,
});
}
// TODO
1
// let fut = async {
// ws.chatserver.send(GetCommunityUsersOnline {community_id}).await.unwrap()
// };
// Runtime::new().unwrap().block_on(fut)
} else {
0
};
let res = GetCommunityResponse {
community: community_view,
moderators,
admins,
online,
};
// Return the jwt
Ok(res)
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}
}
#[async_trait::async_trait(?Send)]
impl Perform for Oper<CreateCommunity> {
type Response = CommunityResponse;
async fn perform(
&self,
pool: &DbPool,
_websocket_info: Option<WebsocketInfo>,
) -> Result<CommunityResponse, LemmyError> {
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let data: &CreateCommunity = &self.data;
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let claims = match Claims::decode(&data.auth) {
Ok(claims) => claims.claims,
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Err(_e) => return Err(APIError::err("not_logged_in").into()),
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};
if let Err(slurs) = slur_check(&data.name) {
return Err(APIError::err(&slurs_vec_to_str(slurs)).into());
}
if let Err(slurs) = slur_check(&data.title) {
return Err(APIError::err(&slurs_vec_to_str(slurs)).into());
}
if let Some(description) = &data.description {
if let Err(slurs) = slur_check(description) {
return Err(APIError::err(&slurs_vec_to_str(slurs)).into());
}
}
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if !is_valid_community_name(&data.name) {
return Err(APIError::err("invalid_community_name").into());
}
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let user_id = claims.id;
// Check for a site ban
let user_view = blocking(pool, move |conn| UserView::read(conn, user_id)).await??;
if user_view.banned {
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return Err(APIError::err("site_ban").into());
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}
// Double check for duplicate community actor_ids
let actor_id = make_apub_endpoint(EndpointType::Community, &data.name).to_string();
let actor_id_cloned = actor_id.to_owned();
let community_dupe = blocking(pool, move |conn| {
Community::read_from_actor_id(conn, &actor_id_cloned)
})
.await?;
if community_dupe.is_ok() {
return Err(APIError::err("community_already_exists").into());
}
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// When you create a community, make sure the user becomes a moderator and a follower
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let keypair = generate_actor_keypair()?;
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let community_form = CommunityForm {
name: data.name.to_owned(),
title: data.title.to_owned(),
description: data.description.to_owned(),
category_id: data.category_id,
creator_id: user_id,
removed: None,
deleted: None,
nsfw: data.nsfw,
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updated: None,
actor_id,
local: true,
private_key: Some(keypair.private_key),
public_key: Some(keypair.public_key),
last_refreshed_at: None,
published: None,
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};
let inserted_community =
match blocking(pool, move |conn| Community::create(conn, &community_form)).await? {
Ok(community) => community,
Err(_e) => return Err(APIError::err("community_already_exists").into()),
};
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let community_moderator_form = CommunityModeratorForm {
community_id: inserted_community.id,
user_id,
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};
let join = move |conn: &'_ _| CommunityModerator::join(conn, &community_moderator_form);
if blocking(pool, join).await?.is_err() {
return Err(APIError::err("community_moderator_already_exists").into());
}
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let community_follower_form = CommunityFollowerForm {
community_id: inserted_community.id,
user_id,
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};
let follow = move |conn: &'_ _| CommunityFollower::follow(conn, &community_follower_form);
if blocking(pool, follow).await?.is_err() {
return Err(APIError::err("community_follower_already_exists").into());
}
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let community_view = blocking(pool, move |conn| {
CommunityView::read(conn, inserted_community.id, Some(user_id))
})
.await??;
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Ok(CommunityResponse {
community: community_view,
})
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}
}
#[async_trait::async_trait(?Send)]
impl Perform for Oper<EditCommunity> {
type Response = CommunityResponse;
async fn perform(
&self,
pool: &DbPool,
websocket_info: Option<WebsocketInfo>,
) -> Result<CommunityResponse, LemmyError> {
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let data: &EditCommunity = &self.data;
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if let Err(slurs) = slur_check(&data.title) {
return Err(APIError::err(&slurs_vec_to_str(slurs)).into());
}
if let Some(description) = &data.description {
if let Err(slurs) = slur_check(description) {
return Err(APIError::err(&slurs_vec_to_str(slurs)).into());
}
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}
let claims = match Claims::decode(&data.auth) {
Ok(claims) => claims.claims,
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Err(_e) => return Err(APIError::err("not_logged_in").into()),
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};
let user_id = claims.id;
// Check for a site ban
let user = blocking(pool, move |conn| User_::read(conn, user_id)).await??;
if user.banned {
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return Err(APIError::err("site_ban").into());
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}
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// Verify its a mod (only mods can edit it)
let edit_id = data.edit_id;
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let mods: Vec<i32> = blocking(pool, move |conn| {
CommunityModeratorView::for_community(conn, edit_id)
.map(|v| v.into_iter().map(|m| m.user_id).collect())
})
.await??;
if !mods.contains(&user_id) {
return Err(APIError::err("not_a_moderator").into());
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}
let edit_id = data.edit_id;
let read_community = blocking(pool, move |conn| Community::read(conn, edit_id)).await??;
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let community_form = CommunityForm {
name: read_community.name,
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title: data.title.to_owned(),
description: data.description.to_owned(),
category_id: data.category_id.to_owned(),
creator_id: read_community.creator_id,
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removed: Some(read_community.removed),
deleted: Some(read_community.deleted),
nsfw: data.nsfw,
updated: Some(naive_now()),
actor_id: read_community.actor_id,
local: read_community.local,
private_key: read_community.private_key,
public_key: read_community.public_key,
last_refreshed_at: None,
published: None,
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};
let edit_id = data.edit_id;
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match blocking(pool, move |conn| {
Community::update(conn, edit_id, &community_form)
})
.await?
{
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Ok(community) => community,
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Err(_e) => return Err(APIError::err("couldnt_update_community").into()),
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};
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// TODO there needs to be some kind of an apub update
// process for communities and users
let edit_id = data.edit_id;
let community_view = blocking(pool, move |conn| {
CommunityView::read(conn, edit_id, Some(user_id))
})
.await??;
let res = CommunityResponse {
community: community_view,
};
if let Some(ws) = websocket_info {
// Strip out the user id and subscribed when sending to others
let mut res_sent = res.clone();
res_sent.community.user_id = None;
res_sent.community.subscribed = None;
ws.chatserver.do_send(SendCommunityRoomMessage {
op: UserOperation::EditCommunity,
response: res_sent,
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community_id: data.edit_id,
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my_id: ws.id,
});
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}
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Ok(res)
}
}
#[async_trait::async_trait(?Send)]
impl Perform for Oper<DeleteCommunity> {
type Response = CommunityResponse;
async fn perform(
&self,
pool: &DbPool,
websocket_info: Option<WebsocketInfo>,
) -> Result<CommunityResponse, LemmyError> {
let data: &DeleteCommunity = &self.data;
let claims = match Claims::decode(&data.auth) {
Ok(claims) => claims.claims,
Err(_e) => return Err(APIError::err("not_logged_in").into()),
};
let user_id = claims.id;
// Check for a site ban
let user = blocking(pool, move |conn| User_::read(conn, user_id)).await??;
if user.banned {
return Err(APIError::err("site_ban").into());
}
// Verify its the creator (only a creator can delete the community)
let edit_id = data.edit_id;
let read_community = blocking(pool, move |conn| Community::read(conn, edit_id)).await??;
if read_community.creator_id != user_id {
return Err(APIError::err("no_community_edit_allowed").into());
}
// Do the delete
let edit_id = data.edit_id;
let deleted = data.deleted;
let updated_community = match blocking(pool, move |conn| {
Community::update_deleted(conn, edit_id, deleted)
})
.await?
{
Ok(community) => community,
Err(_e) => return Err(APIError::err("couldnt_update_community").into()),
};
// Send apub messages
if deleted {
updated_community
.send_delete(&user, &self.client, pool)
.await?;
} else {
updated_community
.send_undo_delete(&user, &self.client, pool)
.await?;
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}
let edit_id = data.edit_id;
let community_view = blocking(pool, move |conn| {
CommunityView::read(conn, edit_id, Some(user_id))
})
.await??;
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let res = CommunityResponse {
community: community_view,
};
if let Some(ws) = websocket_info {
// Strip out the user id and subscribed when sending to others
let mut res_sent = res.clone();
res_sent.community.user_id = None;
res_sent.community.subscribed = None;
ws.chatserver.do_send(SendCommunityRoomMessage {
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op: UserOperation::DeleteCommunity,
response: res_sent,
community_id: data.edit_id,
my_id: ws.id,
});
}
Ok(res)
}
}
#[async_trait::async_trait(?Send)]
impl Perform for Oper<RemoveCommunity> {
type Response = CommunityResponse;
async fn perform(
&self,
pool: &DbPool,
websocket_info: Option<WebsocketInfo>,
) -> Result<CommunityResponse, LemmyError> {
let data: &RemoveCommunity = &self.data;
let claims = match Claims::decode(&data.auth) {
Ok(claims) => claims.claims,
Err(_e) => return Err(APIError::err("not_logged_in").into()),
};
let user_id = claims.id;
// Check for a site ban
let user = blocking(pool, move |conn| User_::read(conn, user_id)).await??;
if user.banned {
return Err(APIError::err("site_ban").into());
}
// Verify its an admin (only an admin can remove a community)
let admins: Vec<i32> = blocking(pool, move |conn| {
UserView::admins(conn).map(|v| v.into_iter().map(|a| a.id).collect())
})
.await??;
if !admins.contains(&user_id) {
return Err(APIError::err("not_an_admin").into());
}
// Do the remove
let edit_id = data.edit_id;
let removed = data.removed;
let updated_community = match blocking(pool, move |conn| {
Community::update_removed(conn, edit_id, removed)
})
.await?
{
Ok(community) => community,
Err(_e) => return Err(APIError::err("couldnt_update_community").into()),
};
// Mod tables
let expires = match data.expires {
Some(time) => Some(naive_from_unix(time)),
None => None,
};
let form = ModRemoveCommunityForm {
mod_user_id: user_id,
community_id: data.edit_id,
removed: Some(removed),
reason: data.reason.to_owned(),
expires,
};
blocking(pool, move |conn| ModRemoveCommunity::create(conn, &form)).await??;
// Apub messages
if removed {
updated_community
.send_remove(&user, &self.client, pool)
.await?;
} else {
updated_community
.send_undo_remove(&user, &self.client, pool)
.await?;
}
let edit_id = data.edit_id;
let community_view = blocking(pool, move |conn| {
CommunityView::read(conn, edit_id, Some(user_id))
})
.await??;
let res = CommunityResponse {
community: community_view,
};
if let Some(ws) = websocket_info {
// Strip out the user id and subscribed when sending to others
let mut res_sent = res.clone();
res_sent.community.user_id = None;
res_sent.community.subscribed = None;
ws.chatserver.do_send(SendCommunityRoomMessage {
op: UserOperation::RemoveCommunity,
response: res_sent,
community_id: data.edit_id,
my_id: ws.id,
});
}
Ok(res)
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}
}
#[async_trait::async_trait(?Send)]
impl Perform for Oper<ListCommunities> {
type Response = ListCommunitiesResponse;
async fn perform(
&self,
pool: &DbPool,
_websocket_info: Option<WebsocketInfo>,
) -> Result<ListCommunitiesResponse, LemmyError> {
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let data: &ListCommunities = &self.data;
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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 sort = SortType::from_str(&data.sort)?;
let page = data.page;
let limit = data.limit;
let communities = blocking(pool, move |conn| {
CommunityQueryBuilder::create(conn)
.sort(&sort)
.for_user(user_id)
.show_nsfw(show_nsfw)
.page(page)
.limit(limit)
.list()
})
.await??;
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// Return the jwt
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Ok(ListCommunitiesResponse { communities })
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}
}
#[async_trait::async_trait(?Send)]
impl Perform for Oper<FollowCommunity> {
type Response = CommunityResponse;
async fn perform(
&self,
pool: &DbPool,
_websocket_info: Option<WebsocketInfo>,
) -> Result<CommunityResponse, LemmyError> {
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let data: &FollowCommunity = &self.data;
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let claims = match Claims::decode(&data.auth) {
Ok(claims) => claims.claims,
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Err(_e) => return Err(APIError::err("not_logged_in").into()),
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};
let user_id = claims.id;
let community_id = data.community_id;
let community = blocking(pool, move |conn| Community::read(conn, community_id)).await??;
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let community_follower_form = CommunityFollowerForm {
community_id: data.community_id,
user_id,
};
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if community.local {
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if data.follow {
let follow = move |conn: &'_ _| CommunityFollower::follow(conn, &community_follower_form);
if blocking(pool, follow).await?.is_err() {
return Err(APIError::err("community_follower_already_exists").into());
}
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} else {
let unfollow =
move |conn: &'_ _| CommunityFollower::unfollow(conn, &community_follower_form);
if blocking(pool, unfollow).await?.is_err() {
return Err(APIError::err("community_follower_already_exists").into());
}
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}
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} else {
let user = blocking(pool, move |conn| User_::read(conn, user_id)).await??;
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if data.follow {
// Dont actually add to the community followers here, because you need
// to wait for the accept
user
.send_follow(&community.actor_id, &self.client, pool)
.await?;
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} else {
user
.send_unfollow(&community.actor_id, &self.client, pool)
.await?;
let unfollow =
move |conn: &'_ _| CommunityFollower::unfollow(conn, &community_follower_form);
if blocking(pool, unfollow).await?.is_err() {
return Err(APIError::err("community_follower_already_exists").into());
}
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}
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// TODO: this needs to return a "pending" state, until Accept is received from the remote server
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}
let community_id = data.community_id;
let community_view = blocking(pool, move |conn| {
CommunityView::read(conn, community_id, Some(user_id))
})
.await??;
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Ok(CommunityResponse {
community: community_view,
})
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}
}
#[async_trait::async_trait(?Send)]
impl Perform for Oper<GetFollowedCommunities> {
type Response = GetFollowedCommunitiesResponse;
async fn perform(
&self,
pool: &DbPool,
_websocket_info: Option<WebsocketInfo>,
) -> Result<GetFollowedCommunitiesResponse, LemmyError> {
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let data: &GetFollowedCommunities = &self.data;
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let claims = match Claims::decode(&data.auth) {
Ok(claims) => claims.claims,
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Err(_e) => return Err(APIError::err("not_logged_in").into()),
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};
let user_id = claims.id;
let communities = match blocking(pool, move |conn| {
CommunityFollowerView::for_user(conn, user_id)
})
.await?
{
Ok(communities) => communities,
_ => return Err(APIError::err("system_err_login").into()),
};
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// Return the jwt
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Ok(GetFollowedCommunitiesResponse { communities })
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}
}
#[async_trait::async_trait(?Send)]
impl Perform for Oper<BanFromCommunity> {
type Response = BanFromCommunityResponse;
async fn perform(
&self,
pool: &DbPool,
websocket_info: Option<WebsocketInfo>,
) -> Result<BanFromCommunityResponse, LemmyError> {
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let data: &BanFromCommunity = &self.data;
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let claims = match Claims::decode(&data.auth) {
Ok(claims) => claims.claims,
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Err(_e) => return Err(APIError::err("not_logged_in").into()),
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};
let user_id = claims.id;
let mut community_moderators: Vec<i32> = vec![];
let community_id = data.community_id;
community_moderators.append(
&mut blocking(pool, move |conn| {
CommunityModeratorView::for_community(&conn, community_id)
.map(|v| v.into_iter().map(|m| m.user_id).collect())
})
.await??,
);
community_moderators.append(
&mut blocking(pool, move |conn| {
UserView::admins(conn).map(|v| v.into_iter().map(|a| a.id).collect())
})
.await??,
);
if !community_moderators.contains(&user_id) {
return Err(APIError::err("couldnt_update_community").into());
}
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let community_user_ban_form = CommunityUserBanForm {
community_id: data.community_id,
user_id: data.user_id,
};
if data.ban {
let ban = move |conn: &'_ _| CommunityUserBan::ban(conn, &community_user_ban_form);
if blocking(pool, ban).await?.is_err() {
return Err(APIError::err("community_user_already_banned").into());
}
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} else {
let unban = move |conn: &'_ _| CommunityUserBan::unban(conn, &community_user_ban_form);
if blocking(pool, unban).await?.is_err() {
return Err(APIError::err("community_user_already_banned").into());
}
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}
// Mod tables
let expires = match data.expires {
Some(time) => Some(naive_from_unix(time)),
None => None,
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};
let form = ModBanFromCommunityForm {
mod_user_id: user_id,
other_user_id: data.user_id,
community_id: data.community_id,
reason: data.reason.to_owned(),
banned: Some(data.ban),
expires,
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};
blocking(pool, move |conn| ModBanFromCommunity::create(conn, &form)).await??;
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let user_id = data.user_id;
let user_view = blocking(pool, move |conn| UserView::read(conn, user_id)).await??;
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let res = BanFromCommunityResponse {
user: user_view,
banned: data.ban,
};
if let Some(ws) = websocket_info {
ws.chatserver.do_send(SendCommunityRoomMessage {
op: UserOperation::BanFromCommunity,
response: res.clone(),
community_id: data.community_id,
my_id: ws.id,
});
}
Ok(res)
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}
}
#[async_trait::async_trait(?Send)]
impl Perform for Oper<AddModToCommunity> {
type Response = AddModToCommunityResponse;
async fn perform(
&self,
pool: &DbPool,
websocket_info: Option<WebsocketInfo>,
) -> Result<AddModToCommunityResponse, LemmyError> {
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let data: &AddModToCommunity = &self.data;
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let claims = match Claims::decode(&data.auth) {
Ok(claims) => claims.claims,
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Err(_e) => return Err(APIError::err("not_logged_in").into()),
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};
let user_id = claims.id;
let community_moderator_form = CommunityModeratorForm {
community_id: data.community_id,
user_id: data.user_id,
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};
let mut community_moderators: Vec<i32> = vec![];
let community_id = data.community_id;
community_moderators.append(
&mut blocking(pool, move |conn| {
CommunityModeratorView::for_community(&conn, community_id)
.map(|v| v.into_iter().map(|m| m.user_id).collect())
})
.await??,
);
community_moderators.append(
&mut blocking(pool, move |conn| {
UserView::admins(conn).map(|v| v.into_iter().map(|a| a.id).collect())
})
.await??,
);
if !community_moderators.contains(&user_id) {
return Err(APIError::err("couldnt_update_community").into());
}
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if data.added {
let join = move |conn: &'_ _| CommunityModerator::join(conn, &community_moderator_form);
if blocking(pool, join).await?.is_err() {
return Err(APIError::err("community_moderator_already_exists").into());
}
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} else {
let leave = move |conn: &'_ _| CommunityModerator::leave(conn, &community_moderator_form);
if blocking(pool, leave).await?.is_err() {
return Err(APIError::err("community_moderator_already_exists").into());
}
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}
// Mod tables
let form = ModAddCommunityForm {
mod_user_id: user_id,
other_user_id: data.user_id,
community_id: data.community_id,
removed: Some(!data.added),
};
blocking(pool, move |conn| ModAddCommunity::create(conn, &form)).await??;
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let community_id = data.community_id;
let moderators = blocking(pool, move |conn| {
CommunityModeratorView::for_community(conn, community_id)
})
.await??;
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let res = AddModToCommunityResponse { moderators };
if let Some(ws) = websocket_info {
ws.chatserver.do_send(SendCommunityRoomMessage {
op: UserOperation::AddModToCommunity,
response: res.clone(),
community_id: data.community_id,
my_id: ws.id,
});
}
Ok(res)
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}
}
#[async_trait::async_trait(?Send)]
impl Perform for Oper<TransferCommunity> {
type Response = GetCommunityResponse;
async fn perform(
&self,
pool: &DbPool,
_websocket_info: Option<WebsocketInfo>,
) -> Result<GetCommunityResponse, LemmyError> {
let data: &TransferCommunity = &self.data;
let claims = match Claims::decode(&data.auth) {
Ok(claims) => claims.claims,
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Err(_e) => return Err(APIError::err("not_logged_in").into()),
};
let user_id = claims.id;
let community_id = data.community_id;
let read_community = blocking(pool, move |conn| Community::read(conn, community_id)).await??;
let site_creator_id =
blocking(pool, move |conn| Site::read(conn, 1).map(|s| s.creator_id)).await??;
let mut admins = blocking(pool, move |conn| UserView::admins(conn)).await??;
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);
// Make sure user is the creator, or an admin
if user_id != read_community.creator_id && !admins.iter().map(|a| a.id).any(|x| x == user_id) {
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return Err(APIError::err("not_an_admin").into());
}
let community_id = data.community_id;
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let new_creator = data.user_id;
let update = move |conn: &'_ _| Community::update_creator(conn, community_id, new_creator);
if blocking(pool, update).await?.is_err() {
return Err(APIError::err("couldnt_update_community").into());
};
// You also have to re-do the community_moderator table, reordering it.
let community_id = data.community_id;
let mut community_mods = blocking(pool, move |conn| {
CommunityModeratorView::for_community(conn, community_id)
})
.await??;
let creator_index = community_mods
.iter()
.position(|r| r.user_id == data.user_id)
.unwrap();
let creator_user = community_mods.remove(creator_index);
community_mods.insert(0, creator_user);
let community_id = data.community_id;
blocking(pool, move |conn| {
CommunityModerator::delete_for_community(conn, community_id)
})
.await??;
// TODO: this should probably be a bulk operation
for cmod in &community_mods {
let community_moderator_form = CommunityModeratorForm {
community_id: cmod.community_id,
user_id: cmod.user_id,
};
let join = move |conn: &'_ _| CommunityModerator::join(conn, &community_moderator_form);
if blocking(pool, join).await?.is_err() {
return Err(APIError::err("community_moderator_already_exists").into());
}
}
// Mod tables
let form = ModAddCommunityForm {
mod_user_id: user_id,
other_user_id: data.user_id,
community_id: data.community_id,
removed: Some(false),
};
blocking(pool, move |conn| ModAddCommunity::create(conn, &form)).await??;
let community_id = data.community_id;
let community_view = match blocking(pool, move |conn| {
CommunityView::read(conn, community_id, Some(user_id))
})
.await?
{
Ok(community) => community,
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Err(_e) => return Err(APIError::err("couldnt_find_community").into()),
};
let community_id = data.community_id;
let moderators = match blocking(pool, move |conn| {
CommunityModeratorView::for_community(conn, community_id)
})
.await?
{
Ok(moderators) => moderators,
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Err(_e) => return Err(APIError::err("couldnt_find_community").into()),
};
// Return the jwt
Ok(GetCommunityResponse {
community: community_view,
moderators,
admins,
online: 0,
})
}
}