lemmy/server/src/db/user_mention_view.rs

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2020-05-16 14:04:08 +00:00
use crate::db::{limit_and_offset, MaybeOptional, SortType};
use diesel::{dsl::*, pg::Pg, result::Error, *};
use serde::{Deserialize, Serialize};
// The faked schema since diesel doesn't do views
table! {
user_mention_view (id) {
id -> Int4,
user_mention_id -> Int4,
creator_id -> Int4,
creator_actor_id -> Text,
creator_local -> Bool,
post_id -> Int4,
parent_id -> Nullable<Int4>,
content -> Text,
removed -> Bool,
read -> Bool,
published -> Timestamp,
updated -> Nullable<Timestamp>,
deleted -> Bool,
community_id -> Int4,
community_actor_id -> Text,
community_local -> Bool,
community_name -> Varchar,
banned -> Bool,
banned_from_community -> Bool,
creator_name -> Varchar,
creator_avatar -> Nullable<Text>,
score -> BigInt,
upvotes -> BigInt,
downvotes -> BigInt,
hot_rank -> Int4,
user_id -> Nullable<Int4>,
my_vote -> Nullable<Int4>,
saved -> Nullable<Bool>,
recipient_id -> Int4,
recipient_actor_id -> Text,
recipient_local -> Bool,
}
}
#[derive(
Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize, QueryableByName, Clone,
)]
#[table_name = "user_mention_view"]
pub struct UserMentionView {
pub id: i32,
pub user_mention_id: i32,
pub creator_id: i32,
pub creator_actor_id: String,
pub creator_local: bool,
pub post_id: i32,
pub parent_id: Option<i32>,
pub content: String,
pub removed: bool,
pub read: bool,
pub published: chrono::NaiveDateTime,
pub updated: Option<chrono::NaiveDateTime>,
pub deleted: bool,
pub community_id: i32,
pub community_actor_id: String,
pub community_local: bool,
pub community_name: String,
pub banned: bool,
pub banned_from_community: bool,
pub creator_name: String,
pub creator_avatar: Option<String>,
pub score: i64,
pub upvotes: i64,
pub downvotes: i64,
pub hot_rank: i32,
pub user_id: Option<i32>,
pub my_vote: Option<i32>,
pub saved: Option<bool>,
pub recipient_id: i32,
pub recipient_actor_id: String,
pub recipient_local: bool,
}
pub struct UserMentionQueryBuilder<'a> {
conn: &'a PgConnection,
query: super::user_mention_view::user_mention_view::BoxedQuery<'a, Pg>,
for_user_id: i32,
sort: &'a SortType,
unread_only: bool,
page: Option<i64>,
limit: Option<i64>,
}
impl<'a> UserMentionQueryBuilder<'a> {
pub fn create(conn: &'a PgConnection, for_user_id: i32) -> Self {
use super::user_mention_view::user_mention_view::dsl::*;
let query = user_mention_view.into_boxed();
UserMentionQueryBuilder {
conn,
query,
for_user_id,
sort: &SortType::New,
unread_only: false,
page: None,
limit: None,
}
}
pub fn sort(mut self, sort: &'a SortType) -> Self {
self.sort = sort;
self
}
pub fn unread_only(mut self, unread_only: bool) -> Self {
self.unread_only = unread_only;
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 list(self) -> Result<Vec<UserMentionView>, Error> {
use super::user_mention_view::user_mention_view::dsl::*;
let mut query = self.query;
if self.unread_only {
query = query.filter(read.eq(false));
}
query = query
.filter(user_id.eq(self.for_user_id))
.filter(recipient_id.eq(self.for_user_id));
query = match self.sort {
SortType::Hot => query
.order_by(hot_rank.desc())
.then_order_by(published.desc()),
SortType::New => query.order_by(published.desc()),
SortType::TopAll => query.order_by(score.desc()),
SortType::TopYear => query
.filter(published.gt(now - 1.years()))
.order_by(score.desc()),
SortType::TopMonth => query
.filter(published.gt(now - 1.months()))
.order_by(score.desc()),
SortType::TopWeek => query
.filter(published.gt(now - 1.weeks()))
.order_by(score.desc()),
SortType::TopDay => query
.filter(published.gt(now - 1.days()))
.order_by(score.desc()),
// _ => query.order_by(published.desc()),
};
let (limit, offset) = limit_and_offset(self.page, self.limit);
query
.limit(limit)
.offset(offset)
.load::<UserMentionView>(self.conn)
}
}
impl UserMentionView {
pub fn read(
conn: &PgConnection,
from_user_mention_id: i32,
from_recipient_id: i32,
) -> Result<Self, Error> {
use super::user_mention_view::user_mention_view::dsl::*;
user_mention_view
.filter(user_mention_id.eq(from_user_mention_id))
.filter(user_id.eq(from_recipient_id))
.first::<Self>(conn)
}
}