lemmy-hexbear/server/src/api/user.rs

use std::{collections::BTreeMap, str::FromStr};

use actix_web::web::Data;
use anyhow::Context;
use bcrypt::verify;
use captcha::{gen, Difficulty};
use chrono::Duration;
use log::{error, info};

use lemmy_api_structs::{user::*, APIError};
use lemmy_db::{
  comment::*, comment_view::*, community::*, community_settings::*, community_view::*,
  diesel_option_overwrite, moderator::*, naive_now, password_reset_request::*, post::*,
  post_view::*, private_message::*, private_message_view::*, site::*, site_view::*, user::*,
  user_mention::*, user_mention_view::*, user_tag::*, user_view::*, Crud, Followable, Joinable,
  ListingType, SortType,
};
use lemmy_utils::{
  generate_actor_keypair, generate_random_string, is_valid_preferred_username, is_valid_username,
  location_info, make_apub_endpoint, naive_from_unix, remove_slurs, send_email, settings::Settings,
  ConnectionId, EndpointType, LemmyError,
};

use crate::{
  api::{
    check_slurs, claims::Claims, get_user_from_jwt, get_user_from_jwt_opt, is_admin,
    is_admin_or_sitemod, validate_token, Perform,
  },
  apub::ApubObjectType,
  blocking, captcha_espeak_wav_base64,
  hcaptcha::hcaptcha_verify,
  is_within_message_char_limit,
  websocket::{
    messages::{
      CaptchaItem, CheckCaptcha, JoinUserRoom, LeaveAllRooms, SendAllMessage, SendUserRoomMessage,
    },
    UserOperation,
  },
  LemmyContext,
};
use lemmy_db::user_ban_id::UserBanId;
use lemmy_db::user_token::{UserToken, UserTokenForm};

#[async_trait::async_trait(?Send)]
impl Perform for SetUserTag {
  type Response = UserTagResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<UserTagResponse, LemmyError> {
    let data: &SetUserTag = &self;
    let key = data.tag.clone();
    let value = data.value.clone();
    let mut tags = BTreeMap::new();

    let claims = match Claims::decode(&data.auth) {
      Ok(claims) => claims.claims,
      Err(_e) => return Err(APIError::err("not_logged_in").into()),
    };

    let user = claims.id;

    if let Some(v) = data.value.clone() {
      tags.insert(key.clone(), v);
    }

    match blocking(context.pool(), move |conn| {
      UserTag::set_key(conn, user, key, value)
    })
    .await?
    {
      Ok(usertag) => Ok(UserTagResponse {
        user,
        community: None,
        tags: serde_json::from_value(usertag.tags)?,
      }),
      Err(e) => Err(LemmyError::from(e)),
    }
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for GetUserTag {
  type Response = UserTagResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<UserTagResponse, LemmyError> {
    let data: &GetUserTag = &self;
    let user = data.user;

    // Check if user exists
    let user_exists = blocking(context.pool(), move |conn| User_::read(conn, user))
      .await?
      .is_ok();
    if !user_exists {
      return Err(APIError::err("user_doesnt_exist").into());
    }

    match blocking(context.pool(), move |conn| UserTag::read(conn, user)).await? {
      Ok(usertag) => Ok(UserTagResponse {
        user,
        community: None,
        tags: serde_json::from_value(usertag.tags)?,
      }),
      Err(diesel::result::Error::NotFound) => {
        let empty = UserTagsSchema {
          // I hate this
          pronouns: None,
          tendency: None,
          favorite_food: None,
          flair: None,
        };
        Ok(UserTagResponse {
          user,
          community: None,
          tags: empty,
        })
      }
      Err(e) => Err(LemmyError::from(e)),
    }
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for Login {
  type Response = LoginResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<LoginResponse, LemmyError> {
    let data: &Login = &self;

    // Fetch that username / email
    let username_or_email = data.username_or_email.clone();
    let user = match blocking(context.pool(), move |conn| {
      User_::find_by_email_or_username(conn, &username_or_email)
    })
    .await?
    {
      Ok(user) => user,
      Err(_e) => return Err(APIError::err("invalid_login_credentials").into()),
    };
    // Verify the password
    let valid: bool = verify(&data.password, &user.password_encrypted).unwrap_or(false);
    if !valid {
      return Err(APIError::err("invalid_login_credentials").into());
    }

    //handle 2fa
    if user.has_2fa {
      match &data.code_2fa {
        Some(code) => match context.code_cache_2fa().check_2fa(&user, code) {
          Ok(matches) => {
            if !matches {
              return Err(APIError::err("invalid_2fa_code").into());
            }
          }
          Err(e) => return Err(e),
        },
        None => {
          match context.code_cache_2fa().generate_2fa(user) {
            Ok(_k) => (),
            Err(e) => return Err(e),
          };
          return Ok(LoginResponse {
            requires_2fa: true,
            jwt: String::from(""),
          });
        }
      }
    }

    //get bid (if any)
    let uid = user.id;
    let bid = blocking(&context.pool, move |conn| {
      UserBanId::get_by_user(conn, &uid)
    })
    .await??
    .map_or("".to_string(), |ubid| ubid.bid.to_string());

    // Return the jwt
    let jwt = generate_token(context, user.id).await?;
    Ok(LoginResponse {
      requires_2fa: false,
      jwt: format!("{}:{}", jwt.token_hash, bid),
    })
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for Logout {
  type Response = LoginResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<LoginResponse, LemmyError> {
    let data: &Logout = &self;

    let claims = match Claims::decode(&data.auth) {
      Ok(claims) => claims.claims,
      Err(_e) => return Err(APIError::err("not_logged_in").into()),
    };

    validate_token(claims.token_id, context.pool()).await?;

    blocking(context.pool(), move |conn| {
      UserToken::revoke(conn, claims.token_id)
    })
    .await??;

    Ok(LoginResponse {
      requires_2fa: false,
      jwt: String::from(""),
    })
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for Register {
  type Response = LoginResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<LoginResponse, LemmyError> {
    let data: &Register = &self;

    // Don't allow admin registration if there are any admins
    let any_admins = blocking(context.pool(), move |conn| {
      UserViewSafe::admins(conn).map(|a| a.is_empty())
    })
    .await??;
    if data.admin && !any_admins {
      return Err(APIError::err("admin_already_created").into());
    }

    // If its not the admin, check other information about registration
    if !data.admin {
      // Make sure site has open registration
      if let Ok(site) = blocking(context.pool(), move |conn| SiteView::read(conn)).await? {
        let site: SiteView = site;
        if !site.open_registration {
          return Err(APIError::err("registration_closed").into());
        }
      }

      // Make sure passwords match
      if data.password != data.password_verify {
        return Err(APIError::err("passwords_dont_match").into());
      }

      //Check the captcha if it's enabled
      if Settings::get().captcha.enabled {
        match Settings::get().captcha.provider.as_str() {
          "hcaptcha" => {
            if let Some(hcaptcha_id) = data.hcaptcha_id.clone() {
              if let Err(hcaptcha_error) = hcaptcha_verify(hcaptcha_id).await {
                error!("hCaptcha failed: {:?}", hcaptcha_error);
                return Err(APIError::err("captcha_failed").into());
              }
            } else {
              return Err(APIError::err("missing_hcaptcha_id").into());
            }
          }
          _ => {
            let check = context
              .chat_server()
              .send(CheckCaptcha {
                uuid: data
                  .captcha_uuid
                  .to_owned()
                  .unwrap_or_else(|| "".to_string()),
                answer: data
                  .captcha_answer
                  .to_owned()
                  .unwrap_or_else(|| "".to_string()),
              })
              .await?;
            if !check {
              return Err(APIError::err("captcha_incorrect").into());
            }
          }
        }
      }
    }

    check_slurs(&data.username)?;

    let user_keypair = generate_actor_keypair()?;
    if !is_valid_username(&data.username) {
      return Err(APIError::err("invalid_username").into());
    }

    let email = match &data.email {
      Some(email) => {
        if email.trim().is_empty() {
          None
        } else {
          Some(email.trim().to_lowercase())
        }
      }
      None => None,
    };

    // Register the new user
    let user_form = UserForm {
      name: data.username.to_owned(),
      email: Some(email.to_owned()),
      admin: data.admin,    //only executes up to this point if there are no other admins.
      matrix_user_id: None,
      avatar: None,
      banner: None,
      password_encrypted: data.password.to_owned(),
      preferred_username: None,
      updated: None,
      banned: false,
      show_nsfw: data.show_nsfw,
      theme: "darkly".into(),
      default_sort_type: SortType::Active as i16,
      default_listing_type: ListingType::All as i16,
      lang: "browser".into(),
      show_avatars: true,
      send_notifications_to_email: false,
      has_2fa: false,
      actor_id: Some(make_apub_endpoint(EndpointType::User, &data.username).to_string()),
      bio: None,
      local: true,
      private_key: Some(user_keypair.private_key),
      public_key: Some(user_keypair.public_key),
      last_refreshed_at: None,
      inbox_disabled: false,
    };

    // Create the user
    let inserted_user = match blocking(context.pool(), move |conn| {
      User_::register(conn, &user_form)
    })
    .await?
    {
      Ok(user) => user,
      Err(e) => {
        let err_type = if e.to_string()
          == "duplicate key value violates unique constraint \"user__email_key\""
        {
          "email_already_exists"
        } else {
          "user_already_exists"
        };

        return Err(APIError::err(err_type).into());
      }
    };

    let main_community_keypair = generate_actor_keypair()?;

    // Create the main community if it doesn't exist
    let main_community =
      match blocking(context.pool(), move |conn| Community::read(conn, 2)).await? {
        Ok(c) => c,
        Err(_e) => {
          let default_community_name = "main";
          let community_form = CommunityForm {
            name: default_community_name.to_string(),
            title: "The Default Community".to_string(),
            description: Some("The Default Community".to_string()),
            category_id: 1,
            nsfw: false,
            creator_id: inserted_user.id,
            removed: None,
            deleted: None,
            updated: None,
            actor_id: Some(
              make_apub_endpoint(EndpointType::Community, default_community_name).to_string(),
            ),
            local: true,
            private_key: Some(main_community_keypair.private_key),
            public_key: Some(main_community_keypair.public_key),
            last_refreshed_at: None,
            published: None,
            icon: None,
            banner: None,
          };
          let community = blocking(context.pool(), move |conn| {
            Community::create(conn, &community_form)
          })
          .await??;

          // Initialize community settings
          let community_settings_form = CommunitySettingsForm {
            id: community.id,
            read_only: false,
            private: false,
            post_links: true,
            comment_images: 1,
            allow_as_default: true,
            hide_from_all: false,
          };

          let _inserted_settings = blocking(context.pool(), move |conn| {
            CommunitySettings::create(conn, &community_settings_form)
          })
          .await??;

          community
        }
      };

    // Sign them up for main community no matter what
    /*let community_follower_form = CommunityFollowerForm {
      community_id: main_community.id,
      user_id: inserted_user.id,
    };

    let follow = move |conn: &'_ _| CommunityFollower::follow(conn, &community_follower_form);
    if blocking(context.pool(), follow).await?.is_err() {
      return Err(APIError::err("community_follower_already_exists").into());
    };*/

    //get comms that are both admin-selected and enabled allow_as_default, then subscribe users to all of them
    //if the read site throws an error, we may be registering before the site is created. just pass over no defaults
    let default_communities = blocking(context.pool(), move |conn| SiteView::read(conn))
      .await?.map(|s| s.autosubscribe_comms).unwrap_or(Vec::new());
    let optin_communities = blocking(context.pool(), move |conn| {
      CommunitySettings::list_allowed_as_default(conn)
    })
    .await??;

    // Sign up new users for a set of default communities
    for comm in default_communities.into_iter().filter(|comm| {
      optin_communities
        .iter()
        .any(|opt_comm| &opt_comm.id == comm)
    }) {
      let community_follower_form = CommunityFollowerForm {
        community_id: comm,
        user_id: inserted_user.id,
      };

      let _ = blocking(context.pool(), move |conn: &'_ _| {
        CommunityFollower::follow(conn, &community_follower_form)
      })
      .await;
    }

    // If its an admin, add them as a mod and follower to main
    if data.admin {
      let community_moderator_form = CommunityModeratorForm {
        community_id: main_community.id,
        user_id: inserted_user.id,
      };

      let join = move |conn: &'_ _| CommunityModerator::join(conn, &community_moderator_form);
      if blocking(context.pool(), join).await?.is_err() {
        return Err(APIError::err("community_moderator_already_exists").into());
      }
    }

    // Add their pronouns if they specified at account registration
    if let Some(pronouns) = data.pronouns.clone() {
      let user_id = inserted_user.id;
      blocking(context.pool(), move |conn| {
        UserTag::set_key(conn, user_id, "pronouns".to_string(), Some(pronouns))
      })
      .await??;
    }
    let jwt = generate_token(context, inserted_user.id).await?;

    // Return the jwt
    Ok(LoginResponse {
      requires_2fa: false,
      jwt: jwt.token_hash,
    })
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for GetCaptcha {
  type Response = GetCaptchaResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<Self::Response, LemmyError> {
    let captcha_settings = Settings::get().captcha;

    if !captcha_settings.enabled {
      return Ok(GetCaptchaResponse {
        ok: None,
        hcaptcha: None,
      });
    }

    match captcha_settings.provider.as_str() {
      "hcaptcha" => Ok(GetCaptchaResponse {
        ok: None,
        hcaptcha: Some(HCaptchaResponse {
          site_key: captcha_settings.hcaptcha_site_key,
          verify_url: captcha_settings.hcaptcha_verify_url,
        }),
      }),
      _ => {
        let captcha = match captcha_settings.difficulty.as_str() {
          "easy" => gen(Difficulty::Easy),
          "medium" => gen(Difficulty::Medium),
          "hard" => gen(Difficulty::Hard),
          _ => gen(Difficulty::Medium),
        };

        let answer = captcha.chars_as_string();

        let png_byte_array = captcha.as_png().expect("failed to generate captcha");

        let png = base64::encode(png_byte_array);

        let uuid = uuid::Uuid::new_v4().to_string();

        let wav = captcha_espeak_wav_base64(&answer).ok();

        let captcha_item = CaptchaItem {
          answer,
          uuid: uuid.to_owned(),
          expires: naive_now() + Duration::minutes(10), // expires in 10 minutes
        };

        // Stores the captcha item on the queue
        context.chat_server().do_send(captcha_item);

        Ok(GetCaptchaResponse {
          ok: Some(CaptchaResponse { png, uuid, wav }),
          hcaptcha: None,
        })
      }
    }
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for SaveUserSettings {
  type Response = LoginResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<LoginResponse, LemmyError> {
    let data: &SaveUserSettings = &self;
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;

    let user_id = user.id;
    let read_user = blocking(context.pool(), move |conn| User_::read(conn, user_id)).await??;

    let bio = match &data.bio {
      Some(bio) => {
        if bio.chars().count() <= 300 {
          Some(bio.to_owned())
        } else {
          return Err(APIError::err("bio_length_overflow").into());
        }
      }
      None => read_user.bio,
    };

    // temporarily disable avatars
    // let avatar = diesel_option_overwrite(&data.avatar);
    // let banner = diesel_option_overwrite(&data.banner);
    let avatar: Option<Option<String>> = None;
    let banner: Option<Option<String>> = None;

    let email = diesel_option_overwrite(&data.email);

    // The DB constraint should stop too many characters
    let preferred_username = match &data.preferred_username {
      Some(preferred_username) => {
        if !is_valid_preferred_username(preferred_username.trim()) {
          return Err(APIError::err("invalid_username").into());
        }
        Some(preferred_username.trim().to_string())
      }
      None => read_user.preferred_username,
    };

    let password_encrypted = match &data.new_password {
      Some(new_password) => {
        match &data.new_password_verify {
          Some(new_password_verify) => {
            // Make sure passwords match
            if new_password != new_password_verify {
              return Err(APIError::err("passwords_dont_match").into());
            }

            // Check the old password
            match &data.old_password {
              Some(old_password) => {
                let valid: bool =
                  verify(old_password, &read_user.password_encrypted).unwrap_or(false);
                if !valid {
                  return Err(APIError::err("password_incorrect").into());
                }
                let new_password = new_password.to_owned();
                let user = blocking(context.pool(), move |conn| {
                  User_::update_password(conn, user_id, &new_password)
                })
                .await??;

                // cant return anything here? might break something?
                blocking(context.pool(), move |conn| {
                  UserToken::revoke_all(conn, user_id)
                })
                .await??;

                user.password_encrypted
              }
              None => return Err(APIError::err("password_incorrect").into()),
            }
          }
          None => return Err(APIError::err("passwords_dont_match").into()),
        }
      }
      None => read_user.password_encrypted,
    };

    let user_form = UserForm {
      name: read_user.name,
      email,
      admin: read_user.admin,
      matrix_user_id: data.matrix_user_id.to_owned(),
      avatar,
      banner,
      password_encrypted,
      preferred_username,
      updated: Some(naive_now()),
      banned: read_user.banned,
      show_nsfw: data.show_nsfw,
      theme: data.theme.to_owned(),
      default_sort_type: data.default_sort_type,
      default_listing_type: data.default_listing_type,
      lang: data.lang.to_owned(),
      show_avatars: data.show_avatars,
      send_notifications_to_email: data.send_notifications_to_email,
      has_2fa: data.has_2fa,
      actor_id: Some(read_user.actor_id),
      bio,
      local: read_user.local,
      private_key: read_user.private_key,
      public_key: read_user.public_key,
      last_refreshed_at: None,
      inbox_disabled: data.inbox_disabled,
    };

    let res = blocking(context.pool(), move |conn| {
      User_::update(conn, user_id, &user_form)
    })
    .await?;
    let updated_user: User_ = match res {
      Ok(user) => user,
      Err(e) => {
        let err_type = if e.to_string()
          == "duplicate key value violates unique constraint \"user__email_key\""
        {
          "email_already_exists"
        } else {
          "user_already_exists"
        };

        return Err(APIError::err(err_type).into());
      }
    };

    let jwt = generate_token(context, updated_user.id).await?;

    // Return the jwt
    Ok(LoginResponse {
      requires_2fa: false,
      jwt: jwt.token_hash,
    })
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for GetUserDetails {
  type Response = GetUserDetailsResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<GetUserDetailsResponse, LemmyError> {
    let data: &GetUserDetails = &self;
    let user = get_user_from_jwt_opt(&data.auth, context.pool()).await?;

    let show_nsfw = match &user {
      Some(user) => user.show_nsfw,
      None => false,
    };

    let sort = SortType::from_str(&data.sort)?;

    let username = data
      .username
      .to_owned()
      .unwrap_or_else(|| "admin".to_string());
    let user_details_id = match data.user_id {
      Some(id) => id,
      None => {
        let user = blocking(context.pool(), move |conn| {
          User_::read_from_name(conn, &username)
        })
        .await?;
        match user {
          Ok(user) => user.id,
          Err(_e) => return Err(APIError::err("couldnt_find_that_username_or_email").into()),
        }
      }
    };

    let auth_user = user.clone();

    let page = data.page;
    let limit = data.limit;
    let saved_only = data.saved_only;
    let community_id = data.community_id;
    let user_id = user.map(|u| u.id);
    let (posts, comments) = blocking(context.pool(), move |conn| {
      let mut posts_query = PostQueryBuilder::create(conn)
        .sort(&sort)
        .show_nsfw(show_nsfw)
        .saved_only(saved_only)
        .for_community_id(community_id)
        .my_user_id(user_id)
        .page(page)
        .limit(limit);

      let mut comments_query = CommentQueryBuilder::create(conn)
        .sort(&sort)
        .saved_only(saved_only)
        .my_user_id(user_id)
        .page(page)
        .limit(limit);

      // If its saved only, you don't care what creator it was
      // Or, if its not saved, then you only want it for that specific creator
      if !saved_only {
        posts_query = posts_query.for_creator_id(user_details_id);
        comments_query = comments_query.for_creator_id(user_details_id);
      }

      let posts = posts_query.list()?;
      let comments = comments_query.list()?;

      Ok((posts, comments)) as Result<_, LemmyError>
    })
    .await??;

    let follows = blocking(context.pool(), move |conn| {
      CommunityFollowerView::for_user(conn, user_details_id)
    })
    .await??;
    let moderates = blocking(context.pool(), move |conn| {
      CommunityModeratorView::for_user(conn, user_details_id)
    })
    .await??;

    let site_creator_id = blocking(context.pool(), move |conn| {
      Site::read(conn, 1).map(|s| s.creator_id)
    })
    .await??;

    let mut admins = blocking(context.pool(), move |conn| UserViewSafe::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);

    let sitemods = blocking(context.pool(), move |conn| UserViewSafe::sitemods(conn)).await??;

    match auth_user {
      Some(user) if user_details_id == user.id => {
        // this is a request for details of the authenticated user
        let mut user_view =
          blocking(context.pool(), move |conn| UserView::read(conn, user.id)).await??;
        user_view.avatar = None;
        // Return the jwt
        Ok(GetUserDetailsResponse {
          user: UserViewEnum::UserDetail(user_view),
          follows,
          moderates,
          comments,
          posts,
          admins,
          sitemods,
        })
      }
      _ => {
        // not for the authenticated user, use the safe view
        let mut user_view = blocking(context.pool(), move |conn| {
          UserViewSafe::read(conn, user_details_id)
        })
        .await??;
        user_view.avatar = None;

        // Return the jwt
        Ok(GetUserDetailsResponse {
          user: UserViewEnum::UserClean(user_view),
          follows,
          moderates,
          comments,
          posts,
          admins,
          sitemods,
        })
      }
    }
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for AddAdmin {
  type Response = AddAdminResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    websocket_id: Option<ConnectionId>,
  ) -> Result<AddAdminResponse, LemmyError> {
    let data: &AddAdmin = &self;
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;

    // Make sure user is an admin
    is_admin(context.pool(), user.id).await?;

    let added = data.added;
    let added_user_id = data.user_id;
    let add_admin = move |conn: &'_ _| User_::add_admin(conn, added_user_id, added);
    if blocking(context.pool(), add_admin).await?.is_err() {
      return Err(APIError::err("couldnt_update_user").into());
    }

    // Mod tables
    let form = ModAddForm {
      mod_user_id: user.id,
      other_user_id: data.user_id,
      removed: Some(!data.added),
    };

    blocking(context.pool(), move |conn| ModAdd::create(conn, &form)).await??;

    let site_creator_id = blocking(context.pool(), move |conn| {
      Site::read(conn, 1).map(|s| s.creator_id)
    })
    .await??;

    let mut admins = blocking(context.pool(), move |conn| UserViewSafe::admins(conn)).await??;
    let creator_index = admins
      .iter()
      .position(|r| r.id == site_creator_id)
      .context(location_info!())?;
    let creator_user = admins.remove(creator_index);
    admins.insert(0, creator_user);

    let res = AddAdminResponse { admins };

    context.chat_server().do_send(SendAllMessage {
      op: UserOperation::AddAdmin,
      response: res.clone(),
      websocket_id,
    });

    Ok(res)
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for AddSitemod {
  type Response = AddSitemodResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    websocket_id: Option<ConnectionId>,
  ) -> Result<AddSitemodResponse, LemmyError> {
    let data: &AddSitemod = &self;
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;

    // Make sure user is an admin
    is_admin(context.pool(), user.id).await?;

    let added = data.added;
    let added_user_id = data.user_id;
    let add_sitemod = move |conn: &'_ _| User_::add_sitemod(conn, added_user_id, added);
    if blocking(context.pool(), add_sitemod).await?.is_err() {
      return Err(APIError::err("couldnt_update_user").into());
    }

    // Mod tables
    let form = ModAddForm {
      mod_user_id: user.id,
      other_user_id: data.user_id,
      removed: Some(!data.added),
    };

    blocking(context.pool(), move |conn| ModAdd::create(conn, &form)).await??;

    let sitemods = blocking(context.pool(), move |conn| UserViewSafe::sitemods(conn)).await??;

    let res = AddSitemodResponse { sitemods };

    context.chat_server.do_send(SendAllMessage {
      op: UserOperation::AddSitemod,
      response: res.clone(),
      websocket_id,
    });

    Ok(res)
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for BanUser {
  type Response = BanUserResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    websocket_id: Option<ConnectionId>,
  ) -> Result<BanUserResponse, LemmyError> {
    let data: &BanUser = &self;
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;

    // Make sure user is an admin
    is_admin_or_sitemod(context.pool(), user.id).await?;

    let banned_user_id = data.user_id;
    // Make sure target user is not an admin or sitemod
    let target = blocking(context.pool(), move |conn| {
      User_::read(&conn, banned_user_id)
    })
    .await??;
    if target.admin || target.sitemod {
      return Err(APIError::err("couldnt_update_user").into());
    }

    let ban = data.ban;
    let banned_user_id = data.user_id;
    let ban_user = move |conn: &'_ _| User_::ban_user(conn, banned_user_id, ban);
    if blocking(context.pool(), ban_user).await?.is_err() {
      return Err(APIError::err("couldnt_update_user").into());
    }

    // Remove their data if that's desired
    if let Some(remove_data) = data.remove_data {
      // Posts
      blocking(context.pool(), move |conn: &'_ _| {
        Post::update_removed_for_creator(conn, banned_user_id, None, remove_data)
      })
      .await??;

      // Communities
      blocking(context.pool(), move |conn: &'_ _| {
        Community::update_removed_for_creator(conn, banned_user_id, remove_data)
      })
      .await??;

      // Comments
      blocking(context.pool(), move |conn: &'_ _| {
        Comment::update_removed_for_creator(conn, banned_user_id, remove_data)
      })
      .await??;
    }

    // Mod tables
    let expires = match data.expires {
      Some(time) => Some(naive_from_unix(time)),
      None => None,
    };

    let form = ModBanForm {
      mod_user_id: user.id,
      other_user_id: data.user_id,
      reason: data.reason.to_owned(),
      banned: Some(data.ban),
      expires,
    };

    blocking(context.pool(), move |conn| ModBan::create(conn, &form)).await??;

    let user_id = data.user_id;
    let user_view = blocking(context.pool(), move |conn| {
      UserViewSafe::read(conn, user_id)
    })
    .await??;

    let res = BanUserResponse {
      user: user_view,
      banned: data.ban,
    };

    context.chat_server().do_send(SendAllMessage {
      op: UserOperation::BanUser,
      response: res.clone(),
      websocket_id,
    });

    Ok(res)
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for GetReplies {
  type Response = GetRepliesResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<GetRepliesResponse, LemmyError> {
    let data: &GetReplies = &self;
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;

    let sort = SortType::from_str(&data.sort)?;

    let page = data.page;
    let limit = data.limit;
    let unread_only = data.unread_only;
    let user_id = user.id;
    let replies = blocking(context.pool(), move |conn| {
      ReplyQueryBuilder::create(conn, user_id)
        .sort(&sort)
        .unread_only(unread_only)
        .page(page)
        .limit(limit)
        .list()
    })
    .await??;

    Ok(GetRepliesResponse { replies })
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for GetUserMentions {
  type Response = GetUserMentionsResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<GetUserMentionsResponse, LemmyError> {
    let data: &GetUserMentions = &self;
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;

    let sort = SortType::from_str(&data.sort)?;

    let page = data.page;
    let limit = data.limit;
    let unread_only = data.unread_only;
    let user_id = user.id;
    let mentions = blocking(context.pool(), move |conn| {
      UserMentionQueryBuilder::create(conn, user_id)
        .sort(&sort)
        .unread_only(unread_only)
        .page(page)
        .limit(limit)
        .list()
    })
    .await??;

    Ok(GetUserMentionsResponse { mentions })
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for MarkUserMentionAsRead {
  type Response = UserMentionResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<UserMentionResponse, LemmyError> {
    let data: &MarkUserMentionAsRead = &self;
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;

    let user_mention_id = data.user_mention_id;
    let read_user_mention = blocking(context.pool(), move |conn| {
      UserMention::read(conn, user_mention_id)
    })
    .await??;

    if user.id != read_user_mention.recipient_id {
      return Err(APIError::err("couldnt_update_comment").into());
    }

    let user_mention_id = read_user_mention.id;
    let read = data.read;
    let update_mention = move |conn: &'_ _| UserMention::update_read(conn, user_mention_id, read);
    if blocking(context.pool(), update_mention).await?.is_err() {
      return Err(APIError::err("couldnt_update_comment").into());
    };

    let user_mention_id = read_user_mention.id;
    let user_id = user.id;
    let user_mention_view = blocking(context.pool(), move |conn| {
      UserMentionView::read(conn, user_mention_id, user_id)
    })
    .await??;

    Ok(UserMentionResponse {
      mention: user_mention_view,
    })
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for MarkAllAsRead {
  type Response = GetRepliesResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<GetRepliesResponse, LemmyError> {
    let data: &MarkAllAsRead = &self;
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;

    let user_id = user.id;
    let replies = blocking(context.pool(), move |conn| {
      ReplyQueryBuilder::create(conn, user_id)
        .unread_only(true)
        .page(1)
        .limit(999)
        .list()
    })
    .await??;

    // TODO: this should probably be a bulk operation
    // Not easy to do as a bulk operation,
    // because recipient_id isn't in the comment table
    for reply in &replies {
      let reply_id = reply.id;
      let mark_as_read = move |conn: &'_ _| Comment::update_read(conn, reply_id, true);
      if blocking(context.pool(), mark_as_read).await?.is_err() {
        return Err(APIError::err("couldnt_update_comment").into());
      }
    }

    // Mark all user mentions as read
    let update_user_mentions = move |conn: &'_ _| UserMention::mark_all_as_read(conn, user_id);
    if blocking(context.pool(), update_user_mentions)
      .await?
      .is_err()
    {
      return Err(APIError::err("couldnt_update_comment").into());
    }

    // Mark all private_messages as read
    let update_pm = move |conn: &'_ _| PrivateMessage::mark_all_as_read(conn, user_id);
    if blocking(context.pool(), update_pm).await?.is_err() {
      return Err(APIError::err("couldnt_update_private_message").into());
    }

    Ok(GetRepliesResponse { replies: vec![] })
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for DeleteAccount {
  type Response = LoginResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<LoginResponse, LemmyError> {
    let data: &DeleteAccount = &self;
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;

    // Verify the password
    let valid: bool = verify(&data.password, &user.password_encrypted).unwrap_or(false);
    if !valid {
      return Err(APIError::err("password_incorrect").into());
    }

    // Comments
    let user_id = user.id;
    let permadelete = move |conn: &'_ _| Comment::permadelete_for_creator(conn, user_id);
    if blocking(context.pool(), permadelete).await?.is_err() {
      return Err(APIError::err("couldnt_update_comment").into());
    }

    // Posts
    let permadelete = move |conn: &'_ _| Post::permadelete_for_creator(conn, user_id);
    if blocking(context.pool(), permadelete).await?.is_err() {
      return Err(APIError::err("couldnt_update_post").into());
    }

    let token_revoke = move |conn: &'_ _| UserToken::revoke_all(conn, user_id);
    if blocking(context.pool(), token_revoke).await?.is_err() {
      return Err(APIError::err("couldnt_update_user").into());
    }

    Ok(LoginResponse {
      requires_2fa: false,
      jwt: String::from(""),
    })
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for PasswordReset {
  type Response = PasswordResetResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<PasswordResetResponse, LemmyError> {
    let data: &PasswordReset = &self;

    // Fetch that email
    let email = data.email.clone();
    let user = match blocking(context.pool(), move |conn| {
      User_::find_by_email(conn, &email)
    })
    .await?
    {
      Ok(user) => user,
      // We want to avoid tipping anyone off about what usernames and emails are on the server, so we should always return the same message.
      Err(_e) => {
        info!("Failed to find user via email for password reset: {}", _e);
        return Ok(PasswordResetResponse {});
      }
    };

    // Generate a random token
    let token = generate_random_string()?;

    // Insert the row
    let token2 = token.clone();
    let user_id = user.id;
    blocking(context.pool(), move |conn| {
      PasswordResetRequest::create_token(conn, user_id, &token2)
    })
    .await??;

    // Email the pure token to the user.
    // TODO no i18n support here.
    let user_email = &user.email.expect("email");
    let subject = &format!("Password reset for {}", user.name);
    let hostname = &format!("https://{}", Settings::get().hostname); //TODO add https for now.
    let html = &format!("<h1>Password Reset Request for {}</h1><br><a href={}/password_change/{}>Click here to reset your password</a>", user.name, hostname, &token);
    match send_email(subject, user_email, &user.name, html) {
      Ok(_o) => _o,
      // We want to avoid tipping anyone off about what usernames and emails are on the server, so we should always return the same message.
      Err(_e) => {
        info!("Failed to send email: {}", _e);
        return Ok(PasswordResetResponse {});
      }
    };

    Ok(PasswordResetResponse {})
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for PasswordChange {
  type Response = LoginResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<LoginResponse, LemmyError> {
    let data: &PasswordChange = &self;

    // Fetch the user_id from the token
    let token = data.token.clone();
    let user_id = blocking(context.pool(), move |conn| {
      PasswordResetRequest::read_from_token(conn, &token).map(|p| p.user_id)
    })
    .await??;

    // Make sure passwords match
    if data.password != data.password_verify {
      return Err(APIError::err("passwords_dont_match").into());
    }

    // Update the user with the new password
    let password = data.password.clone();
    let updated_user = match blocking(context.pool(), move |conn| {
      User_::update_password(conn, user_id, &password)
    })
    .await?
    {
      Ok(user) => user,
      Err(_e) => return Err(APIError::err("couldnt_update_user").into()),
    };

    // cant return anything here, would brick the account
    blocking(context.pool(), move |conn| {
      UserToken::revoke_all(conn, user_id)
    })
    .await??;

    let jwt = generate_token(context, updated_user.id).await?;

    // Return the jwt
    Ok(LoginResponse {
      requires_2fa: false,
      jwt: jwt.token_hash,
    })
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for CreatePrivateMessage {
  type Response = PrivateMessageResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    websocket_id: Option<ConnectionId>,
  ) -> Result<PrivateMessageResponse, LemmyError> {
    let data: &CreatePrivateMessage = &self;
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;

    if (naive_now() - user.published) < Duration::days(1) {
      return Err(APIError::err("new_user_24h_waiting_period_not_met").into());
    }

    let recipient_id = data.recipient_id;
    let recipient = blocking(context.pool(), move |conn| User_::read(conn, recipient_id)).await??;

    if recipient.inbox_disabled {
      return Err(APIError::err("user_not_accepting_private_messages").into());
    }

    let hostname = &format!("https://{}", Settings::get().hostname);

    let content_slurs_removed = remove_slurs(&data.content.to_owned());

    if !is_within_message_char_limit(&data.content) {
      return Err(APIError::err("message_too_long").into());
    }

    let private_message_form = PrivateMessageForm {
      content: content_slurs_removed.to_owned(),
      creator_id: user.id,
      recipient_id: data.recipient_id,
      deleted: None,
      read: None,
      updated: None,
      ap_id: None,
      local: true,
      published: None,
    };

    let inserted_private_message = match blocking(context.pool(), move |conn| {
      PrivateMessage::create(conn, &private_message_form)
    })
    .await?
    {
      Ok(private_message) => private_message,
      Err(_e) => {
        return Err(APIError::err("couldnt_create_private_message").into());
      }
    };

    let inserted_private_message_id = inserted_private_message.id;
    let updated_private_message = match blocking(context.pool(), move |conn| {
      let apub_id = make_apub_endpoint(
        EndpointType::PrivateMessage,
        &inserted_private_message_id.to_string(),
      )
      .to_string();
      PrivateMessage::update_ap_id(&conn, inserted_private_message_id, apub_id)
    })
    .await?
    {
      Ok(private_message) => private_message,
      Err(_e) => return Err(APIError::err("couldnt_create_private_message").into()),
    };

    updated_private_message.send_create(&user, context).await?;

    // Send notifications to the recipient
    let recipient_id = data.recipient_id;
    let recipient_user =
      blocking(context.pool(), move |conn| User_::read(conn, recipient_id)).await??;
    if recipient_user.send_notifications_to_email {
      if let Some(email) = recipient_user.email {
        let subject = &format!(
          "{} - Private Message from {}",
          Settings::get().hostname,
          user.name,
        );
        let html = &format!(
          "<h1>Private Message</h1><br><div>{} - {}</div><br><a href={}/inbox>inbox</a>",
          user.name, &content_slurs_removed, hostname
        );
        match send_email(subject, &email, &recipient_user.name, html) {
          Ok(_o) => _o,
          Err(e) => error!("{}", e),
        };
      }
    }

    let message = blocking(context.pool(), move |conn| {
      PrivateMessageView::read(conn, inserted_private_message.id)
    })
    .await??;

    let res = PrivateMessageResponse { message };

    context.chat_server().do_send(SendUserRoomMessage {
      op: UserOperation::CreatePrivateMessage,
      response: res.clone(),
      recipient_id,
      websocket_id,
    });

    Ok(res)
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for EditPrivateMessage {
  type Response = PrivateMessageResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    websocket_id: Option<ConnectionId>,
  ) -> Result<PrivateMessageResponse, LemmyError> {
    let data: &EditPrivateMessage = &self;
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;

    // Checking permissions
    let edit_id = data.edit_id;
    let orig_private_message = blocking(context.pool(), move |conn| {
      PrivateMessage::read(conn, edit_id)
    })
    .await??;
    if user.id != orig_private_message.creator_id {
      return Err(APIError::err("no_private_message_edit_allowed").into());
    }

    let recipient_id = orig_private_message.recipient_id;
    let recipient = blocking(context.pool(), move |conn| User_::read(conn, recipient_id)).await??;

    if recipient.inbox_disabled {
      return Err(APIError::err("user_not_accepting_private_messages").into());
    }

    // Doing the update
    let content_slurs_removed = remove_slurs(&data.content);
    let edit_id = data.edit_id;
    let updated_private_message = match blocking(context.pool(), move |conn| {
      PrivateMessage::update_content(conn, edit_id, &content_slurs_removed)
    })
    .await?
    {
      Ok(private_message) => private_message,
      Err(_e) => return Err(APIError::err("couldnt_update_private_message").into()),
    };

    // Send the apub update
    updated_private_message.send_update(&user, context).await?;

    let edit_id = data.edit_id;
    let message = blocking(context.pool(), move |conn| {
      PrivateMessageView::read(conn, edit_id)
    })
    .await??;
    let recipient_id = message.recipient_id;

    let res = PrivateMessageResponse { message };

    context.chat_server().do_send(SendUserRoomMessage {
      op: UserOperation::EditPrivateMessage,
      response: res.clone(),
      recipient_id,
      websocket_id,
    });

    Ok(res)
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for DeletePrivateMessage {
  type Response = PrivateMessageResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    websocket_id: Option<ConnectionId>,
  ) -> Result<PrivateMessageResponse, LemmyError> {
    let data: &DeletePrivateMessage = &self;
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;

    // Checking permissions
    let edit_id = data.edit_id;
    let orig_private_message = blocking(context.pool(), move |conn| {
      PrivateMessage::read(conn, edit_id)
    })
    .await??;
    if user.id != orig_private_message.creator_id {
      return Err(APIError::err("no_private_message_edit_allowed").into());
    }

    // Doing the update
    let edit_id = data.edit_id;
    let deleted = data.deleted;
    let updated_private_message = match blocking(context.pool(), move |conn| {
      PrivateMessage::update_deleted(conn, edit_id, deleted)
    })
    .await?
    {
      Ok(private_message) => private_message,
      Err(_e) => return Err(APIError::err("couldnt_update_private_message").into()),
    };

    // Send the apub update
    if data.deleted {
      updated_private_message.send_delete(&user, context).await?;
    } else {
      updated_private_message
        .send_undo_delete(&user, context)
        .await?;
    }

    let edit_id = data.edit_id;
    let message = blocking(context.pool(), move |conn| {
      PrivateMessageView::read(conn, edit_id)
    })
    .await??;
    let recipient_id = message.recipient_id;

    let res = PrivateMessageResponse { message };

    context.chat_server().do_send(SendUserRoomMessage {
      op: UserOperation::DeletePrivateMessage,
      response: res.clone(),
      recipient_id,
      websocket_id,
    });

    Ok(res)
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for MarkPrivateMessageAsRead {
  type Response = PrivateMessageResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    websocket_id: Option<ConnectionId>,
  ) -> Result<PrivateMessageResponse, LemmyError> {
    let data: &MarkPrivateMessageAsRead = &self;
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;

    // Checking permissions
    let edit_id = data.edit_id;
    let orig_private_message = blocking(context.pool(), move |conn| {
      PrivateMessage::read(conn, edit_id)
    })
    .await??;
    if user.id != orig_private_message.recipient_id {
      return Err(APIError::err("couldnt_update_private_message").into());
    }

    // Doing the update
    let edit_id = data.edit_id;
    let read = data.read;
    match blocking(context.pool(), move |conn| {
      PrivateMessage::update_read(conn, edit_id, read)
    })
    .await?
    {
      Ok(private_message) => private_message,
      Err(_e) => return Err(APIError::err("couldnt_update_private_message").into()),
    };

    // No need to send an apub update

    let edit_id = data.edit_id;
    let message = blocking(context.pool(), move |conn| {
      PrivateMessageView::read(conn, edit_id)
    })
    .await??;
    let recipient_id = message.recipient_id;

    let res = PrivateMessageResponse { message };

    context.chat_server().do_send(SendUserRoomMessage {
      op: UserOperation::MarkPrivateMessageAsRead,
      response: res.clone(),
      recipient_id,
      websocket_id,
    });

    Ok(res)
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for GetPrivateMessages {
  type Response = PrivateMessagesResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<PrivateMessagesResponse, LemmyError> {
    let data: &GetPrivateMessages = &self;
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;
    let user_id = user.id;

    let page = data.page;
    let limit = data.limit;
    let unread_only = data.unread_only;
    let messages = blocking(context.pool(), move |conn| {
      PrivateMessageQueryBuilder::create(&conn, user_id)
        .page(page)
        .limit(limit)
        .unread_only(unread_only)
        .list()
    })
    .await??;

    Ok(PrivateMessagesResponse { messages })
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for UserJoin {
  type Response = UserJoinResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    websocket_id: Option<ConnectionId>,
  ) -> Result<UserJoinResponse, LemmyError> {
    let data: &UserJoin = &self;
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;

    if let Some(ws_id) = websocket_id {
      context.chat_server().do_send(JoinUserRoom {
        user_id: user.id,
        id: ws_id,
      });
    }

    Ok(UserJoinResponse { user_id: user.id })
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for LeaveRooms {
  type Response = LeaveRoomsResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    websocket_id: Option<ConnectionId>,
  ) -> Result<LeaveRoomsResponse, LemmyError> {
    if let Some(ws_id) = websocket_id {
      context.chat_server().do_send(LeaveAllRooms { id: ws_id });
    }

    Ok(LeaveRoomsResponse { success: true })
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for GetUnreadCount {
  type Response = GetUnreadCountResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<ConnectionId>,
  ) -> Result<GetUnreadCountResponse, LemmyError> {
    let data: &GetUnreadCount = &self;
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;
    let user_id = user.id;

    let unread_notifs = blocking(context.pool(), move |conn| {
      User_::get_unread_notifs(conn, user_id)
    })
    .await??;

    Ok(GetUnreadCountResponse {
      unreads: unread_notifs.unreads,
    })
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for RemoveUserContent {
  type Response = BanUserResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    websocket_id: Option<ConnectionId>,
  ) -> Result<BanUserResponse, LemmyError> {
    let data: &RemoveUserContent = &self;

    // Permissions checks
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;

    // make sure they're an admin/sitemod
    is_admin_or_sitemod(context.pool(), user.id).await?;

    let target_user_id = data.user_id;
    // Make sure target user is not an admin or sitemod
    let target = blocking(context.pool(), move |conn| {
      User_::read(&conn, target_user_id)
    })
    .await??;
    if target.admin || target.sitemod {
      return Err(APIError::err("couldnt_update_user").into());
    }

    if data.scrub_name {
      let scrubbed_unames: Vec<String> = blocking(context.pool(), move |conn| {
        User_::find_by_username_mult(conn, "UsernameScrubbed_%")
      })
      .await??
      .into_iter()
      .map(|user| user.name)
      .collect();

      let mut i = 1;
      while scrubbed_unames.contains(&format!("UsernameScrubbed{}", i)) {
        i += 1;
      }
      let scrubbed_name = format!("UsernameScrubbed{}", i);

      blocking(context.pool(), move |conn| {
        User_::update_username(
          conn,
          target.id,
          scrubbed_name.clone(),
          make_apub_endpoint(EndpointType::User, &*scrubbed_name).to_string(),
        )
      })
      .await??;
    }

    // ban the user first, so when we query the db we won't miss anything
    let banned_user_id = data.user_id;
    let ban_user = move |conn: &'_ _| User_::ban_user(conn, banned_user_id, true);
    if blocking(context.pool(), ban_user).await?.is_err() {
      return Err(APIError::err("couldnt_update_user").into());
    }
    let ban_reason = data.reason.clone();
    let form = ModBanForm {
      mod_user_id: user.id,
      other_user_id: data.user_id,
      reason: ban_reason,
      banned: Some(true),
      expires: None,
    };

    blocking(context.pool(), move |conn| ModBan::create(conn, &form)).await??;

    // This removes posts/comments without overwriting their content
    // also returns us the list of ids that were updated
    let banned_user_id = data.user_id;
    let post_ids = blocking(context.pool(), move |conn| {
      Post::permadelete_user_posts(conn, banned_user_id)
    })
    .await??;

    let comment_ids = blocking(context.pool(), move |conn| {
      Comment::permadelete_user_comments(conn, banned_user_id)
    })
    .await??;

    let default_reason = "USER CONTENT MASS REMOVED";
    let removal_reason = match data.reason.to_owned() {
      Some(given_reason) => [default_reason, &given_reason].join(": "),
      None => default_reason.to_string(),
    };

    let mut remove_post_forms: Vec<ModRemovePostForm> = Vec::new();
    for post_id in post_ids {
      let form = ModRemovePostForm {
        mod_user_id: user.id,
        post_id,
        reason: Some(removal_reason.clone()),
        removed: Some(true),
      };
      remove_post_forms.push(form);
    }

    blocking(context.pool(), move |conn| {
      ModRemovePost::bulk_create(conn, &remove_post_forms)
    })
    .await??;

    let mut remove_comment_forms: Vec<ModRemoveCommentForm> = Vec::new();
    for comment_id in comment_ids {
      let form = ModRemoveCommentForm {
        mod_user_id: user.id,
        comment_id,
        reason: Some(removal_reason.clone()),
        removed: Some(true),
      };
      remove_comment_forms.push(form);
    }

    blocking(context.pool(), move |conn| {
      ModRemoveComment::bulk_create(conn, &remove_comment_forms)
    })
    .await??;

    let user_id = data.user_id;
    let user_view = blocking(context.pool(), move |conn| {
      UserViewSafe::read(conn, user_id)
    })
    .await??;

    let banned = user_view.banned;
    let res = BanUserResponse {
      user: user_view,
      banned,
    };

    context.chat_server().do_send(SendAllMessage {
      op: UserOperation::RemoveUserContent,
      response: res.clone(),
      websocket_id,
    });

    Ok(res)
  }
}

#[async_trait::async_trait(?Send)]
impl Perform for GetRelatedUsers {
  type Response = GetRelatedUsersResponse;

  async fn perform(
    &self,
    context: &Data<LemmyContext>,
    _websocket_id: Option<usize>,
  ) -> Result<Self::Response, LemmyError> {
    let data: &GetRelatedUsers = &self;

    // Permissions checks
    let user = get_user_from_jwt(&data.auth, context.pool()).await?;

    // make sure they're an admin/sitemod
    is_admin_or_sitemod(context.pool(), user.id).await?;

    let userid = data.user_id;
    let userbanid = blocking(context.pool(), move |conn| {
      UserBanId::get_by_user(conn, &userid)
    })
    .await??;

    match userbanid {
      Some(ubid) => {
        let users = blocking(context.pool(), move |conn| {
          UserBanId::get_users_by_bid(conn, ubid.bid)
        })
        .await??;
        Ok(GetRelatedUsersResponse { users })
      }
      None => Ok(GetRelatedUsersResponse { users: vec![] }),
    }
  }
}

async fn generate_token(
  context: &Data<LemmyContext>,
  user_id: i32,
) -> Result<UserToken, LemmyError> {
  let uuid = uuid::Uuid::new_v4();
  let token = Claims::jwt(user_id, uuid, Settings::get().hostname)?;

  let settings = Settings::get();

  let form = UserTokenForm {
    id: uuid,
    user_id,
    token_hash: token,
    expires_at: naive_now() + Duration::minutes(settings.auth_token.auth_minutes.into()),
  };

  let user_token =
    match blocking(context.pool(), move |conn| UserToken::create(conn, &form)).await? {
      Ok(user_token) => user_token,
      Err(_e) => return Err(APIError::err("couldnt_update_user").into()),
    };

  Ok(user_token)
}