use crate::{ api::{listing_type_with_default, sort_type_with_default}, fetcher::resolve_actor_identifier, objects::community::ApubCommunity, }; use activitypub_federation::config::Data; use actix_web::web::{Json, Query}; use lemmy_api_common::{ context::LemmyContext, post::{GetPosts, GetPostsResponse}, utils::check_private_instance, }; use lemmy_db_schema::source::community::Community; use lemmy_db_views::{ post_view::PostQuery, structs::{LocalUserView, PaginationCursor, SiteView}, }; use lemmy_utils::error::{LemmyError, LemmyErrorExt, LemmyErrorType}; #[tracing::instrument(skip(context))] pub async fn list_posts( data: Query, context: Data, local_user_view: Option, ) -> Result, LemmyError> { let local_site = SiteView::read_local(&mut context.pool()).await?; check_private_instance(&local_user_view, &local_site.local_site)?; let page = data.page; let limit = data.limit; let community_id = if let Some(name) = &data.community_name { Some(resolve_actor_identifier::(name, &context, &None, true).await?) .map(|c| c.id) } else { data.community_id }; let saved_only = data.saved_only.unwrap_or_default(); let show_hidden = data.show_hidden.unwrap_or_default(); let liked_only = data.liked_only.unwrap_or_default(); let disliked_only = data.disliked_only.unwrap_or_default(); if liked_only && disliked_only { return Err(LemmyError::from(LemmyErrorType::ContradictingFilters)); } let local_user_ref = local_user_view.as_ref().map(|u| &u.local_user); let listing_type = Some(listing_type_with_default( data.type_, local_user_ref, &local_site.local_site, community_id, )); let sort = Some(sort_type_with_default( data.sort, local_user_ref, &local_site.local_site, )); // parse pagination token let page_after = if let Some(pa) = &data.page_cursor { Some(pa.read(&mut context.pool()).await?) } else { None }; let posts = PostQuery { local_user: local_user_view.as_ref(), listing_type, sort, community_id, saved_only, liked_only, disliked_only, page, page_after, limit, show_hidden, ..Default::default() } .list(&local_site.site, &mut context.pool()) .await .with_lemmy_type(LemmyErrorType::CouldntGetPosts)?; // if this page wasn't empty, then there is a next page after the last post on this page let next_page = posts.last().map(PaginationCursor::after_post); Ok(Json(GetPostsResponse { posts, next_page })) }