lemmy/crates/db_views/src/post_report_view.rs
2021-01-20 16:21:27 +01:00

176 lines
5.1 KiB
Rust

use diesel::{result::Error, *};
use lemmy_db_queries::{limit_and_offset, MaybeOptional, ToSafe, ViewToVec};
use lemmy_db_schema::{
schema::{community, post, post_report, user_, user_alias_1, user_alias_2},
source::{
community::{Community, CommunitySafe},
post::Post,
post_report::PostReport,
user::{UserAlias1, UserAlias2, UserSafe, UserSafeAlias1, UserSafeAlias2, User_},
},
};
use serde::Serialize;
#[derive(Debug, PartialEq, Serialize, Clone)]
pub struct PostReportView {
pub post_report: PostReport,
pub post: Post,
pub community: CommunitySafe,
pub creator: UserSafe,
pub post_creator: UserSafeAlias1,
pub resolver: Option<UserSafeAlias2>,
}
type PostReportViewTuple = (
PostReport,
Post,
CommunitySafe,
UserSafe,
UserSafeAlias1,
Option<UserSafeAlias2>,
);
impl PostReportView {
/// returns the PostReportView for the provided report_id
///
/// * `report_id` - the report id to obtain
pub fn read(conn: &PgConnection, report_id: i32) -> Result<Self, Error> {
let (post_report, post, community, creator, post_creator, resolver) = post_report::table
.find(report_id)
.inner_join(post::table)
.inner_join(community::table.on(post::community_id.eq(community::id)))
.inner_join(user_::table.on(post_report::creator_id.eq(user_::id)))
.inner_join(user_alias_1::table.on(post::creator_id.eq(user_alias_1::id)))
.left_join(user_alias_2::table.on(post_report::resolver_id.eq(user_alias_2::id.nullable())))
.select((
post_report::all_columns,
post::all_columns,
Community::safe_columns_tuple(),
User_::safe_columns_tuple(),
UserAlias1::safe_columns_tuple(),
UserAlias2::safe_columns_tuple().nullable(),
))
.first::<PostReportViewTuple>(conn)?;
Ok(Self {
post_report,
post,
community,
creator,
post_creator,
resolver,
})
}
/// returns the current unresolved post report count for the supplied community ids
///
/// * `community_ids` - a Vec<i32> of community_ids to get a count for
/// TODO this eq_any is a bad way to do this, would be better to join to communitymoderator
/// for a user id
pub fn get_report_count(conn: &PgConnection, community_ids: &[i32]) -> Result<i64, Error> {
use diesel::dsl::*;
post_report::table
.inner_join(post::table)
.filter(
post_report::resolved
.eq(false)
.and(post::community_id.eq_any(community_ids)),
)
.select(count(post_report::id))
.first::<i64>(conn)
}
}
pub struct PostReportQueryBuilder<'a> {
conn: &'a PgConnection,
community_ids: Option<Vec<i32>>, // TODO bad way to do this
page: Option<i64>,
limit: Option<i64>,
resolved: Option<bool>,
}
impl<'a> PostReportQueryBuilder<'a> {
pub fn create(conn: &'a PgConnection) -> Self {
PostReportQueryBuilder {
conn,
community_ids: None,
page: None,
limit: None,
resolved: Some(false),
}
}
pub fn community_ids<T: MaybeOptional<Vec<i32>>>(mut self, community_ids: T) -> Self {
self.community_ids = community_ids.get_optional();
self
}
pub fn page<T: MaybeOptional<i64>>(mut self, page: T) -> Self {
self.page = page.get_optional();
self
}
pub fn limit<T: MaybeOptional<i64>>(mut self, limit: T) -> Self {
self.limit = limit.get_optional();
self
}
pub fn resolved<T: MaybeOptional<bool>>(mut self, resolved: T) -> Self {
self.resolved = resolved.get_optional();
self
}
pub fn list(self) -> Result<Vec<PostReportView>, Error> {
let mut query = post_report::table
.inner_join(post::table)
.inner_join(community::table.on(post::community_id.eq(community::id)))
.inner_join(user_::table.on(post_report::creator_id.eq(user_::id)))
.inner_join(user_alias_1::table.on(post::creator_id.eq(user_alias_1::id)))
.left_join(user_alias_2::table.on(post_report::resolver_id.eq(user_alias_2::id.nullable())))
.select((
post_report::all_columns,
post::all_columns,
Community::safe_columns_tuple(),
User_::safe_columns_tuple(),
UserAlias1::safe_columns_tuple(),
UserAlias2::safe_columns_tuple().nullable(),
))
.into_boxed();
if let Some(comm_ids) = self.community_ids {
query = query.filter(post::community_id.eq_any(comm_ids));
}
if let Some(resolved_flag) = self.resolved {
query = query.filter(post_report::resolved.eq(resolved_flag));
}
let (limit, offset) = limit_and_offset(self.page, self.limit);
let res = query
.order_by(post_report::published.asc())
.limit(limit)
.offset(offset)
.load::<PostReportViewTuple>(self.conn)?;
Ok(PostReportView::from_tuple_to_vec(res))
}
}
impl ViewToVec for PostReportView {
type DbTuple = PostReportViewTuple;
fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
items
.iter()
.map(|a| Self {
post_report: a.0.to_owned(),
post: a.1.to_owned(),
community: a.2.to_owned(),
creator: a.3.to_owned(),
post_creator: a.4.to_owned(),
resolver: a.5.to_owned(),
})
.collect::<Vec<Self>>()
}
}