lemmy/crates/apub/src/api/search.rs

use crate::{
  api::PerformApub,
  fetcher::resolve_actor_identifier,
  objects::community::ApubCommunity,
};
use activitypub_federation::config::Data;
use lemmy_api_common::{
  context::LemmyContext,
  site::{Search, SearchResponse},
  utils::{check_private_instance, is_admin, local_user_view_from_jwt_opt},
};
use lemmy_db_schema::{
  source::{community::Community, local_site::LocalSite},
  utils::post_to_comment_sort_type,
  SearchType,
};
use lemmy_db_views::{comment_view::CommentQuery, post_view::PostQuery};
use lemmy_db_views_actor::{community_view::CommunityQuery, person_view::PersonQuery};
use lemmy_utils::error::LemmyError;

#[async_trait::async_trait]
impl PerformApub for Search {
  type Response = SearchResponse;

  #[tracing::instrument(skip(context))]
  async fn perform(&self, context: &Data<LemmyContext>) -> Result<SearchResponse, LemmyError> {
    let data: &Search = self;

    let local_user_view = local_user_view_from_jwt_opt(data.auth.as_ref(), context).await;
    let local_site = LocalSite::read(context.pool()).await?;

    check_private_instance(&local_user_view, &local_site)?;

    let is_admin = local_user_view.as_ref().map(|luv| is_admin(luv).is_ok());

    let mut posts = Vec::new();
    let mut comments = Vec::new();
    let mut communities = Vec::new();
    let mut users = Vec::new();

    // TODO no clean / non-nsfw searching rn

    let q = data.q.clone();
    let page = data.page;
    let limit = data.limit;
    let sort = data.sort;
    let listing_type = data.listing_type;
    let search_type = data.type_.unwrap_or(SearchType::All);
    let community_id = if let Some(name) = &data.community_name {
      resolve_actor_identifier::<ApubCommunity, Community>(name, context, &local_user_view, false)
        .await
        .ok()
        .map(|c| c.id)
    } else {
      data.community_id
    };
    let creator_id = data.creator_id;
    let local_user = local_user_view.map(|l| l.local_user);
    match search_type {
      SearchType::Posts => {
        posts = PostQuery::builder()
          .pool(context.pool())
          .sort(sort)
          .listing_type(listing_type)
          .community_id(community_id)
          .creator_id(creator_id)
          .local_user(local_user.as_ref())
          .search_term(Some(q))
          .is_mod_or_admin(is_admin)
          .page(page)
          .limit(limit)
          .build()
          .list()
          .await?;
      }
      SearchType::Comments => {
        comments = CommentQuery::builder()
          .pool(context.pool())
          .sort(sort.map(post_to_comment_sort_type))
          .listing_type(listing_type)
          .search_term(Some(q))
          .community_id(community_id)
          .creator_id(creator_id)
          .local_user(local_user.as_ref())
          .page(page)
          .limit(limit)
          .build()
          .list()
          .await?;
      }
      SearchType::Communities => {
        communities = CommunityQuery::builder()
          .pool(context.pool())
          .sort(sort)
          .listing_type(listing_type)
          .search_term(Some(q))
          .local_user(local_user.as_ref())
          .is_mod_or_admin(is_admin)
          .page(page)
          .limit(limit)
          .build()
          .list()
          .await?;
      }
      SearchType::Users => {
        users = PersonQuery::builder()
          .pool(context.pool())
          .sort(sort)
          .search_term(Some(q))
          .page(page)
          .limit(limit)
          .build()
          .list()
          .await?;
      }
      SearchType::All => {
        // If the community or creator is included, dont search communities or users
        let community_or_creator_included =
          data.community_id.is_some() || data.community_name.is_some() || data.creator_id.is_some();

        let local_user_ = local_user.clone();
        posts = PostQuery::builder()
          .pool(context.pool())
          .sort(sort)
          .listing_type(listing_type)
          .community_id(community_id)
          .creator_id(creator_id)
          .local_user(local_user_.as_ref())
          .search_term(Some(q))
          .is_mod_or_admin(is_admin)
          .page(page)
          .limit(limit)
          .build()
          .list()
          .await?;

        let q = data.q.clone();

        let local_user_ = local_user.clone();
        comments = CommentQuery::builder()
          .pool(context.pool())
          .sort(sort.map(post_to_comment_sort_type))
          .listing_type(listing_type)
          .search_term(Some(q))
          .community_id(community_id)
          .creator_id(creator_id)
          .local_user(local_user_.as_ref())
          .page(page)
          .limit(limit)
          .build()
          .list()
          .await?;

        let q = data.q.clone();

        communities = if community_or_creator_included {
          vec![]
        } else {
          CommunityQuery::builder()
            .pool(context.pool())
            .sort(sort)
            .listing_type(listing_type)
            .search_term(Some(q))
            .local_user(local_user.as_ref())
            .is_mod_or_admin(is_admin)
            .page(page)
            .limit(limit)
            .build()
            .list()
            .await?
        };

        let q = data.q.clone();

        users = if community_or_creator_included {
          vec![]
        } else {
          PersonQuery::builder()
            .pool(context.pool())
            .sort(sort)
            .search_term(Some(q))
            .page(page)
            .limit(limit)
            .build()
            .list()
            .await?
        };
      }
      SearchType::Url => {
        posts = PostQuery::builder()
          .pool(context.pool())
          .sort(sort)
          .listing_type(listing_type)
          .community_id(community_id)
          .creator_id(creator_id)
          .url_search(Some(q))
          .is_mod_or_admin(is_admin)
          .page(page)
          .limit(limit)
          .build()
          .list()
          .await?;
      }
    };

    // Return the jwt
    Ok(SearchResponse {
      type_: search_type,
      comments,
      posts,
      communities,
      users,
    })
  }
}