use crate::structs::{CommentView, LocalUserView};
use diesel::{
+ pg::Pg,
result::Error,
BoolExpressionMethods,
ExpressionMethods,
post::Post,
},
traits::JoinView,
- utils::{fuzzy_search, get_conn, limit_and_offset, DbPool},
+ utils::{fuzzy_search, limit_and_offset, DbConn, DbPool, ListFn, Queries, ReadFn},
CommentSortType,
ListingType,
};
Option<i16>,
);
-impl CommentView {
- pub async fn read(
- pool: &mut DbPool<'_>,
- comment_id: CommentId,
- my_person_id: Option<PersonId>,
- ) -> Result<Self, Error> {
- let conn = &mut get_conn(pool).await?;
-
+fn queries<'a>() -> Queries<
+ impl ReadFn<'a, CommentView, (CommentId, Option<PersonId>)>,
+ impl ListFn<'a, CommentView, CommentQuery<'a>>,
+> {
+ let all_joins = |query: comment::BoxedQuery<'a, Pg>, my_person_id: Option<PersonId>| {
// The left join below will return None in this case
let person_id_join = my_person_id.unwrap_or(PersonId(-1));
-
- let (
- comment,
- creator,
- post,
- community,
- counts,
- creator_banned_from_community,
- follower,
- saved,
- creator_blocked,
- comment_like,
- ) = comment::table
- .find(comment_id)
+ query
.inner_join(person::table)
.inner_join(post::table)
.inner_join(community::table.on(post::community_id.eq(community::id)))
.and(comment_like::person_id.eq(person_id_join)),
),
)
- .select((
- comment::all_columns,
- person::all_columns,
- post::all_columns,
- community::all_columns,
- comment_aggregates::all_columns,
- community_person_ban::all_columns.nullable(),
- community_follower::all_columns.nullable(),
- comment_saved::all_columns.nullable(),
- person_block::all_columns.nullable(),
- comment_like::score.nullable(),
- ))
- .first::<CommentViewTuple>(conn)
- .await?;
-
- // If a person is given, then my_vote, if None, should be 0, not null
- // Necessary to differentiate between other person's votes
- let my_vote = if my_person_id.is_some() && comment_like.is_none() {
- Some(0)
- } else {
- comment_like
- };
-
- Ok(CommentView {
- comment,
- post,
- creator,
- community,
- counts,
- creator_banned_from_community: creator_banned_from_community.is_some(),
- subscribed: CommunityFollower::to_subscribed_type(&follower),
- saved: saved.is_some(),
- creator_blocked: creator_blocked.is_some(),
- my_vote,
- })
- }
-}
+ };
-#[derive(Default)]
-pub struct CommentQuery<'a> {
- pub listing_type: Option<ListingType>,
- pub sort: Option<CommentSortType>,
- pub community_id: Option<CommunityId>,
- pub post_id: Option<PostId>,
- pub parent_path: Option<Ltree>,
- pub creator_id: Option<PersonId>,
- pub local_user: Option<&'a LocalUserView>,
- pub search_term: Option<String>,
- pub saved_only: Option<bool>,
- pub is_profile_view: Option<bool>,
- pub show_deleted_and_removed: Option<bool>,
- pub page: Option<i64>,
- pub limit: Option<i64>,
- pub max_depth: Option<i32>,
-}
+ let selection = (
+ comment::all_columns,
+ person::all_columns,
+ post::all_columns,
+ community::all_columns,
+ comment_aggregates::all_columns,
+ community_person_ban::all_columns.nullable(),
+ community_follower::all_columns.nullable(),
+ comment_saved::all_columns.nullable(),
+ person_block::all_columns.nullable(),
+ comment_like::score.nullable(),
+ );
+
+ let read = move |mut conn: DbConn<'a>,
+ (comment_id, my_person_id): (CommentId, Option<PersonId>)| async move {
+ all_joins(comment::table.find(comment_id).into_boxed(), my_person_id)
+ .select(selection)
+ .first::<CommentViewTuple>(&mut conn)
+ .await
+ };
-impl<'a> CommentQuery<'a> {
- pub async fn list(self, pool: &mut DbPool<'_>) -> Result<Vec<CommentView>, Error> {
- let conn = &mut get_conn(pool).await?;
+ let list = move |mut conn: DbConn<'a>, options: CommentQuery<'a>| async move {
+ let person_id = options.local_user.map(|l| l.person.id);
+ let local_user_id = options.local_user.map(|l| l.local_user.id);
// The left join below will return None in this case
- let person_id_join = self.local_user.map(|l| l.person.id).unwrap_or(PersonId(-1));
- let local_user_id_join = self
- .local_user
- .map(|l| l.local_user.id)
- .unwrap_or(LocalUserId(-1));
+ let person_id_join = person_id.unwrap_or(PersonId(-1));
+ let local_user_id_join = local_user_id.unwrap_or(LocalUserId(-1));
- let mut query = comment::table
- .inner_join(person::table)
- .inner_join(post::table)
- .inner_join(community::table.on(post::community_id.eq(community::id)))
- .inner_join(comment_aggregates::table)
- .left_join(
- community_person_ban::table.on(
- community::id
- .eq(community_person_ban::community_id)
- .and(community_person_ban::person_id.eq(comment::creator_id)),
- ),
- )
- .left_join(
- community_follower::table.on(
- post::community_id
- .eq(community_follower::community_id)
- .and(community_follower::person_id.eq(person_id_join)),
- ),
- )
- .left_join(
- comment_saved::table.on(
- comment::id
- .eq(comment_saved::comment_id)
- .and(comment_saved::person_id.eq(person_id_join)),
- ),
- )
- .left_join(
- person_block::table.on(
- comment::creator_id
- .eq(person_block::target_id)
- .and(person_block::person_id.eq(person_id_join)),
- ),
- )
+ let mut query = all_joins(comment::table.into_boxed(), person_id)
.left_join(
community_block::table.on(
community::id
.and(community_block::person_id.eq(person_id_join)),
),
)
- .left_join(
- comment_like::table.on(
- comment::id
- .eq(comment_like::comment_id)
- .and(comment_like::person_id.eq(person_id_join)),
- ),
- )
.left_join(
local_user_language::table.on(
comment::language_id
.and(local_user_language::local_user_id.eq(local_user_id_join)),
),
)
- .select((
- comment::all_columns,
- person::all_columns,
- post::all_columns,
- community::all_columns,
- comment_aggregates::all_columns,
- community_person_ban::all_columns.nullable(),
- community_follower::all_columns.nullable(),
- comment_saved::all_columns.nullable(),
- person_block::all_columns.nullable(),
- comment_like::score.nullable(),
- ))
- .into_boxed();
-
- if let Some(creator_id) = self.creator_id {
+ .select(selection);
+
+ if let Some(creator_id) = options.creator_id {
query = query.filter(comment::creator_id.eq(creator_id));
};
- if let Some(post_id) = self.post_id {
+ if let Some(post_id) = options.post_id {
query = query.filter(comment::post_id.eq(post_id));
};
- if let Some(parent_path) = self.parent_path.as_ref() {
+ if let Some(parent_path) = options.parent_path.as_ref() {
query = query.filter(comment::path.contained_by(parent_path));
};
- if let Some(search_term) = self.search_term {
+ if let Some(search_term) = options.search_term {
query = query.filter(comment::content.ilike(fuzzy_search(&search_term)));
};
- if let Some(community_id) = self.community_id {
+ if let Some(community_id) = options.community_id {
query = query.filter(post::community_id.eq(community_id));
}
- if let Some(listing_type) = self.listing_type {
+ if let Some(listing_type) = options.listing_type {
match listing_type {
ListingType::Subscribed => {
query = query.filter(community_follower::person_id.is_not_null())
}
}
- if self.saved_only.unwrap_or(false) {
+ if options.saved_only.unwrap_or(false) {
query = query.filter(comment_saved::comment_id.is_not_null());
}
- let is_profile_view = self.is_profile_view.unwrap_or(false);
- let is_creator = self.creator_id == self.local_user.map(|l| l.person.id);
+ let is_profile_view = options.is_profile_view.unwrap_or(false);
+ let is_creator = options.creator_id == options.local_user.map(|l| l.person.id);
// only show deleted comments to creator
if !is_creator {
query = query.filter(comment::deleted.eq(false));
}
- let is_admin = self.local_user.map(|l| l.person.admin).unwrap_or(false);
+ let is_admin = options.local_user.map(|l| l.person.admin).unwrap_or(false);
// only show removed comments to admin when viewing user profile
if !(is_profile_view && is_admin) {
query = query.filter(comment::removed.eq(false));
}
- if !self
+ if !options
.local_user
.map(|l| l.local_user.show_bot_accounts)
.unwrap_or(true)
query = query.filter(person::bot_account.eq(false));
};
- if self.local_user.is_some() {
+ if options.local_user.is_some() {
// Filter out the rows with missing languages
query = query.filter(local_user_language::language_id.is_not_null());
// Don't show blocked communities or persons
- if self.post_id.is_none() {
+ if options.post_id.is_none() {
query = query.filter(community_block::person_id.is_null());
}
query = query.filter(person_block::person_id.is_null());
}
// A Max depth given means its a tree fetch
- let (limit, offset) = if let Some(max_depth) = self.max_depth {
- let depth_limit = if let Some(parent_path) = self.parent_path.as_ref() {
+ let (limit, offset) = if let Some(max_depth) = options.max_depth {
+ let depth_limit = if let Some(parent_path) = options.parent_path.as_ref() {
parent_path.0.split('.').count() as i32 + max_depth
// Add one because of root "0"
} else {
query = query.filter(nlevel(comment::path).le(depth_limit));
- // Always order by the parent path first
- query = query.order_by(subpath(comment::path, 0, -1));
+ // only order if filtering by a post id. DOS potential otherwise and max_depth + !post_id isn't used anyways (afaik)
+ if options.post_id.is_some() {
+ // Always order by the parent path first
+ query = query.order_by(subpath(comment::path, 0, -1));
+ }
// TODO limit question. Limiting does not work for comment threads ATM, only max_depth
// For now, don't do any limiting for tree fetches
// (i64::MAX, 0)
(300, 0)
} else {
- // limit_and_offset_unlimited(self.page, self.limit)
- limit_and_offset(self.page, self.limit)?
+ // limit_and_offset_unlimited(options.page, options.limit)
+ limit_and_offset(options.page, options.limit)?
};
- query = match self.sort.unwrap_or(CommentSortType::Hot) {
+ query = match options.sort.unwrap_or(CommentSortType::Hot) {
CommentSortType::Hot => query
.then_order_by(comment_aggregates::hot_rank.desc())
.then_order_by(comment_aggregates::score.desc()),
+ CommentSortType::Controversial => {
+ query.then_order_by(comment_aggregates::controversy_rank.desc())
+ }
CommentSortType::New => query.then_order_by(comment::published.desc()),
CommentSortType::Old => query.then_order_by(comment::published.asc()),
CommentSortType::Top => query.order_by(comment_aggregates::score.desc()),
};
// Note: deleted and removed comments are done on the front side
- let res = query
+ query
.limit(limit)
.offset(offset)
- .load::<CommentViewTuple>(conn)
- .await?;
+ .load::<CommentViewTuple>(&mut conn)
+ .await
+ };
+
+ Queries::new(read, list)
+}
- Ok(res.into_iter().map(CommentView::from_tuple).collect())
+impl CommentView {
+ pub async fn read(
+ pool: &mut DbPool<'_>,
+ comment_id: CommentId,
+ my_person_id: Option<PersonId>,
+ ) -> Result<Self, Error> {
+ // If a person is given, then my_vote (res.9), if None, should be 0, not null
+ // Necessary to differentiate between other person's votes
+ let mut res = queries().read(pool, (comment_id, my_person_id)).await?;
+ if my_person_id.is_some() && res.my_vote.is_none() {
+ res.my_vote = Some(0);
+ }
+ Ok(res)
+ }
+}
+
+#[derive(Default)]
+pub struct CommentQuery<'a> {
+ pub listing_type: Option<ListingType>,
+ pub sort: Option<CommentSortType>,
+ pub community_id: Option<CommunityId>,
+ pub post_id: Option<PostId>,
+ pub parent_path: Option<Ltree>,
+ pub creator_id: Option<PersonId>,
+ pub local_user: Option<&'a LocalUserView>,
+ pub search_term: Option<String>,
+ pub saved_only: Option<bool>,
+ pub is_profile_view: Option<bool>,
+ pub show_deleted_and_removed: Option<bool>,
+ pub page: Option<i64>,
+ pub limit: Option<i64>,
+ pub max_depth: Option<i32>,
+}
+
+impl<'a> CommentQuery<'a> {
+ pub async fn list(self, pool: &mut DbPool<'_>) -> Result<Vec<CommentView>, Error> {
+ queries().list(pool, self).await
}
}
published: agg.published,
child_count: 5,
hot_rank: 1728,
+ controversy_rank: 0.0,
},
}
}
projects / lemmy.git / blobdiff