322 lines
9 KiB
Rust
322 lines
9 KiB
Rust
use crate::{
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aggregates::comment_aggregates::CommentAggregates,
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functions::hot_rank,
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limit_and_offset,
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source::{
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community::{Community, CommunityFollower, CommunitySafe, CommunityUserBan},
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user_mention::UserMention,
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},
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views::ViewToVec,
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MaybeOptional,
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SortType,
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ToSafe,
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};
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use diesel::{result::Error, *};
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use lemmy_db_schema::{
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schema::{
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comment,
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comment_aggregates,
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comment_like,
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comment_saved,
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community,
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community_follower,
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community_user_ban,
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post,
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user_,
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user_alias_1,
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user_mention,
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},
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source::{
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comment::{Comment, CommentSaved},
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post::Post,
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user::{UserAlias1, UserSafe, UserSafeAlias1, User_},
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},
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};
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use serde::Serialize;
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#[derive(Debug, PartialEq, Serialize, Clone)]
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pub struct UserMentionView {
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pub user_mention: UserMention,
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pub comment: Comment,
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pub creator: UserSafe,
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pub post: Post,
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pub community: CommunitySafe,
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pub recipient: UserSafeAlias1,
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pub counts: CommentAggregates,
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pub creator_banned_from_community: bool, // Left Join to CommunityUserBan
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pub subscribed: bool, // Left join to CommunityFollower
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pub saved: bool, // Left join to CommentSaved
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pub my_vote: Option<i16>, // Left join to CommentLike
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}
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type UserMentionViewTuple = (
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UserMention,
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Comment,
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UserSafe,
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Post,
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CommunitySafe,
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UserSafeAlias1,
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CommentAggregates,
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Option<CommunityUserBan>,
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Option<CommunityFollower>,
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Option<CommentSaved>,
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Option<i16>,
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);
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impl UserMentionView {
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pub fn read(
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conn: &PgConnection,
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user_mention_id: i32,
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my_user_id: Option<i32>,
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) -> Result<Self, Error> {
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// The left join below will return None in this case
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let user_id_join = my_user_id.unwrap_or(-1);
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let (
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user_mention,
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comment,
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creator,
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post,
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community,
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recipient,
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counts,
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creator_banned_from_community,
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subscribed,
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saved,
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my_vote,
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) = user_mention::table
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.find(user_mention_id)
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.inner_join(comment::table)
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.inner_join(user_::table.on(comment::creator_id.eq(user_::id)))
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.inner_join(post::table.on(comment::post_id.eq(post::id)))
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.inner_join(community::table.on(post::community_id.eq(community::id)))
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.inner_join(user_alias_1::table)
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.inner_join(comment_aggregates::table.on(comment::id.eq(comment_aggregates::comment_id)))
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.left_join(
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community_user_ban::table.on(
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community::id
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.eq(community_user_ban::community_id)
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.and(community_user_ban::user_id.eq(comment::creator_id)),
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),
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)
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.left_join(
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community_follower::table.on(
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post::community_id
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.eq(community_follower::community_id)
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.and(community_follower::user_id.eq(user_id_join)),
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),
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)
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.left_join(
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comment_saved::table.on(
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comment::id
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.eq(comment_saved::comment_id)
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.and(comment_saved::user_id.eq(user_id_join)),
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),
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)
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.left_join(
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comment_like::table.on(
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comment::id
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.eq(comment_like::comment_id)
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.and(comment_like::user_id.eq(user_id_join)),
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),
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)
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.select((
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user_mention::all_columns,
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comment::all_columns,
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User_::safe_columns_tuple(),
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post::all_columns,
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Community::safe_columns_tuple(),
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UserAlias1::safe_columns_tuple(),
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comment_aggregates::all_columns,
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community_user_ban::all_columns.nullable(),
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community_follower::all_columns.nullable(),
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comment_saved::all_columns.nullable(),
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comment_like::score.nullable(),
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))
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.first::<UserMentionViewTuple>(conn)?;
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Ok(UserMentionView {
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user_mention,
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comment,
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creator,
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post,
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community,
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recipient,
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counts,
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creator_banned_from_community: creator_banned_from_community.is_some(),
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subscribed: subscribed.is_some(),
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saved: saved.is_some(),
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my_vote,
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})
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}
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}
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pub struct UserMentionQueryBuilder<'a> {
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conn: &'a PgConnection,
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my_user_id: Option<i32>,
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recipient_id: Option<i32>,
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sort: &'a SortType,
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unread_only: bool,
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page: Option<i64>,
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limit: Option<i64>,
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}
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impl<'a> UserMentionQueryBuilder<'a> {
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pub fn create(conn: &'a PgConnection) -> Self {
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UserMentionQueryBuilder {
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conn,
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my_user_id: None,
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recipient_id: None,
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sort: &SortType::New,
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unread_only: false,
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page: None,
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limit: None,
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}
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}
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pub fn sort(mut self, sort: &'a SortType) -> Self {
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self.sort = sort;
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self
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}
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pub fn unread_only(mut self, unread_only: bool) -> Self {
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self.unread_only = unread_only;
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self
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}
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pub fn recipient_id<T: MaybeOptional<i32>>(mut self, recipient_id: T) -> Self {
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self.recipient_id = recipient_id.get_optional();
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self
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}
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pub fn my_user_id<T: MaybeOptional<i32>>(mut self, my_user_id: T) -> Self {
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self.my_user_id = my_user_id.get_optional();
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self
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}
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pub fn page<T: MaybeOptional<i64>>(mut self, page: T) -> Self {
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self.page = page.get_optional();
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self
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}
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pub fn limit<T: MaybeOptional<i64>>(mut self, limit: T) -> Self {
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self.limit = limit.get_optional();
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self
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}
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pub fn list(self) -> Result<Vec<UserMentionView>, Error> {
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use diesel::dsl::*;
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// The left join below will return None in this case
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let user_id_join = self.my_user_id.unwrap_or(-1);
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let mut query = user_mention::table
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.inner_join(comment::table)
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.inner_join(user_::table.on(comment::creator_id.eq(user_::id)))
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.inner_join(post::table.on(comment::post_id.eq(post::id)))
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.inner_join(community::table.on(post::community_id.eq(community::id)))
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.inner_join(user_alias_1::table)
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.inner_join(comment_aggregates::table.on(comment::id.eq(comment_aggregates::comment_id)))
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.left_join(
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community_user_ban::table.on(
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community::id
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.eq(community_user_ban::community_id)
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.and(community_user_ban::user_id.eq(comment::creator_id)),
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),
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)
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.left_join(
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community_follower::table.on(
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post::community_id
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.eq(community_follower::community_id)
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.and(community_follower::user_id.eq(user_id_join)),
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),
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)
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.left_join(
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comment_saved::table.on(
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comment::id
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.eq(comment_saved::comment_id)
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.and(comment_saved::user_id.eq(user_id_join)),
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),
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)
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.left_join(
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comment_like::table.on(
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comment::id
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.eq(comment_like::comment_id)
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.and(comment_like::user_id.eq(user_id_join)),
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),
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)
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.select((
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user_mention::all_columns,
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comment::all_columns,
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User_::safe_columns_tuple(),
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post::all_columns,
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Community::safe_columns_tuple(),
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UserAlias1::safe_columns_tuple(),
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comment_aggregates::all_columns,
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community_user_ban::all_columns.nullable(),
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community_follower::all_columns.nullable(),
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comment_saved::all_columns.nullable(),
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comment_like::score.nullable(),
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))
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.into_boxed();
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if let Some(recipient_id) = self.recipient_id {
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query = query.filter(user_mention::recipient_id.eq(recipient_id));
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}
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if self.unread_only {
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query = query.filter(user_mention::read.eq(false));
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}
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query = match self.sort {
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SortType::Hot | SortType::Active => query
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.order_by(hot_rank(comment_aggregates::score, comment::published).desc())
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.then_order_by(comment::published.desc()),
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SortType::New => query.order_by(comment::published.desc()),
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SortType::TopAll => query.order_by(comment_aggregates::score.desc()),
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SortType::TopYear => query
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.filter(comment::published.gt(now - 1.years()))
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.order_by(comment_aggregates::score.desc()),
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SortType::TopMonth => query
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.filter(comment::published.gt(now - 1.months()))
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.order_by(comment_aggregates::score.desc()),
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SortType::TopWeek => query
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.filter(comment::published.gt(now - 1.weeks()))
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.order_by(comment_aggregates::score.desc()),
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SortType::TopDay => query
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.filter(comment::published.gt(now - 1.days()))
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.order_by(comment_aggregates::score.desc()),
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};
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let (limit, offset) = limit_and_offset(self.page, self.limit);
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let res = query
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.limit(limit)
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.offset(offset)
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.load::<UserMentionViewTuple>(self.conn)?;
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Ok(UserMentionView::to_vec(res))
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}
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}
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impl ViewToVec for UserMentionView {
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type DbTuple = UserMentionViewTuple;
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fn to_vec(posts: Vec<Self::DbTuple>) -> Vec<Self> {
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posts
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.iter()
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.map(|a| Self {
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user_mention: a.0.to_owned(),
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comment: a.1.to_owned(),
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creator: a.2.to_owned(),
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post: a.3.to_owned(),
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community: a.4.to_owned(),
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recipient: a.5.to_owned(),
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counts: a.6.to_owned(),
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creator_banned_from_community: a.7.is_some(),
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subscribed: a.8.is_some(),
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saved: a.9.is_some(),
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my_vote: a.10,
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})
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.collect::<Vec<Self>>()
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}
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}
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