lemmy/server/src/db/comment_view.rs
Lyra 16b687de3a Introduce the "MaybeOptional" trait.
This trait is a generic type that allows us to get an Option from any type and from another option. It can be used to remove the ugly "do_something", "do_something_optional" that we previously had.
2019-12-11 00:10:39 +01:00

505 lines
13 KiB
Rust

use super::*;
use diesel::pg::Pg;
// The faked schema since diesel doesn't do views
table! {
comment_view (id) {
id -> Int4,
creator_id -> Int4,
post_id -> Int4,
parent_id -> Nullable<Int4>,
content -> Text,
removed -> Bool,
read -> Bool,
published -> Timestamp,
updated -> Nullable<Timestamp>,
deleted -> Bool,
community_id -> Int4,
banned -> Bool,
banned_from_community -> Bool,
creator_name -> Varchar,
score -> BigInt,
upvotes -> BigInt,
downvotes -> BigInt,
user_id -> Nullable<Int4>,
my_vote -> Nullable<Int4>,
saved -> Nullable<Bool>,
}
}
#[derive(
Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize, QueryableByName, Clone,
)]
#[table_name = "comment_view"]
pub struct CommentView {
pub id: i32,
pub creator_id: i32,
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 banned: bool,
pub banned_from_community: bool,
pub creator_name: String,
pub score: i64,
pub upvotes: i64,
pub downvotes: i64,
pub user_id: Option<i32>,
pub my_vote: Option<i32>,
pub saved: Option<bool>,
}
pub struct CommentQueryBuilder<'a> {
conn: &'a PgConnection,
query: super::comment_view::comment_view::BoxedQuery<'a, Pg>,
sort: &'a SortType,
for_post_id: Option<i32>,
for_creator_id: Option<i32>,
search_term: Option<String>,
my_user_id: Option<i32>,
saved_only: bool,
page: Option<i64>,
limit: Option<i64>,
}
impl<'a> CommentQueryBuilder<'a> {
pub fn create(conn: &'a PgConnection) -> Self {
use super::comment_view::comment_view::dsl::*;
let query = comment_view.into_boxed();
CommentQueryBuilder {
conn,
query,
sort: &SortType::New,
for_post_id: None,
for_creator_id: None,
search_term: None,
my_user_id: None,
saved_only: false,
page: None,
limit: None,
}
}
pub fn sort(mut self, sort: &'a SortType) -> Self {
self.sort = sort;
self
}
pub fn for_post_id<T: MaybeOptional<i32>>(mut self, for_post_id: T) -> Self {
self.for_post_id = for_post_id.get_optional();
self
}
pub fn for_creator_id<T: MaybeOptional<i32>>(mut self, for_creator_id: T) -> Self {
self.for_creator_id = for_creator_id.get_optional();
self
}
pub fn search_term<T: MaybeOptional<String>>(mut self, search_term: T) -> Self {
self.search_term = search_term.get_optional();
self
}
pub fn my_user_id<T: MaybeOptional<i32>>(mut self, my_user_id: T) -> Self {
self.my_user_id = my_user_id.get_optional();
self
}
pub fn saved_only(mut self, saved_only: bool) -> Self {
self.saved_only = saved_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<CommentView>, Error> {
use super::comment_view::comment_view::dsl::*;
let mut query = self.query;
// The view lets you pass a null user_id, if you're not logged in
if let Some(my_user_id) = self.my_user_id {
query = query.filter(user_id.eq(my_user_id));
} else {
query = query.filter(user_id.is_null());
}
if let Some(for_creator_id) = self.for_creator_id {
query = query.filter(creator_id.eq(for_creator_id));
};
if let Some(for_post_id) = self.for_post_id {
query = query.filter(post_id.eq(for_post_id));
};
if let Some(search_term) = self.search_term {
query = query.filter(content.ilike(fuzzy_search(&search_term)));
};
if self.saved_only {
query = query.filter(saved.eq(true));
}
query = match self.sort {
// SortType::Hot => query.order(hot_rank.desc(), 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);
// Note: deleted and removed comments are done on the front side
query
.limit(limit)
.offset(offset)
.load::<CommentView>(self.conn)
}
}
impl CommentView {
pub fn read(
conn: &PgConnection,
from_comment_id: i32,
my_user_id: Option<i32>,
) -> Result<Self, Error> {
use super::comment_view::comment_view::dsl::*;
let mut query = comment_view.into_boxed();
// The view lets you pass a null user_id, if you're not logged in
if let Some(my_user_id) = my_user_id {
query = query.filter(user_id.eq(my_user_id));
} else {
query = query.filter(user_id.is_null());
}
query = query
.filter(id.eq(from_comment_id))
.order_by(published.desc());
query.first::<Self>(conn)
}
}
// The faked schema since diesel doesn't do views
table! {
reply_view (id) {
id -> Int4,
creator_id -> Int4,
post_id -> Int4,
parent_id -> Nullable<Int4>,
content -> Text,
removed -> Bool,
read -> Bool,
published -> Timestamp,
updated -> Nullable<Timestamp>,
deleted -> Bool,
community_id -> Int4,
banned -> Bool,
banned_from_community -> Bool,
creator_name -> Varchar,
score -> BigInt,
upvotes -> BigInt,
downvotes -> BigInt,
user_id -> Nullable<Int4>,
my_vote -> Nullable<Int4>,
saved -> Nullable<Bool>,
recipient_id -> Int4,
}
}
#[derive(
Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize, QueryableByName, Clone,
)]
#[table_name = "reply_view"]
pub struct ReplyView {
pub id: i32,
pub creator_id: i32,
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 banned: bool,
pub banned_from_community: bool,
pub creator_name: String,
pub score: i64,
pub upvotes: i64,
pub downvotes: i64,
pub user_id: Option<i32>,
pub my_vote: Option<i32>,
pub saved: Option<bool>,
pub recipient_id: i32,
}
pub struct ReplyQueryBuilder<'a> {
conn: &'a PgConnection,
query: super::comment_view::reply_view::BoxedQuery<'a, Pg>,
for_user_id: i32,
sort: &'a SortType,
unread_only: bool,
page: Option<i64>,
limit: Option<i64>,
}
impl<'a> ReplyQueryBuilder<'a> {
pub fn create(conn: &'a PgConnection, for_user_id: i32) -> Self {
use super::comment_view::reply_view::dsl::*;
let query = reply_view.into_boxed();
ReplyQueryBuilder {
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<ReplyView>, Error> {
use super::comment_view::reply_view::dsl::*;
let mut query = self.query;
query = query
.filter(user_id.eq(self.for_user_id))
.filter(recipient_id.eq(self.for_user_id));
if self.unread_only {
query = query.filter(read.eq(false));
}
query = match self.sort {
// SortType::Hot => query.order_by(hot_rank.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::<ReplyView>(self.conn)
}
}
#[cfg(test)]
mod tests {
use super::super::comment::*;
use super::super::community::*;
use super::super::post::*;
use super::super::user::*;
use super::*;
#[test]
fn test_crud() {
let conn = establish_connection();
let new_user = UserForm {
name: "timmy".into(),
fedi_name: "rrf".into(),
preferred_username: None,
password_encrypted: "nope".into(),
email: None,
admin: false,
banned: false,
updated: None,
show_nsfw: false,
theme: "darkly".into(),
default_sort_type: SortType::Hot as i16,
default_listing_type: ListingType::Subscribed as i16,
lang: "browser".into(),
};
let inserted_user = User_::create(&conn, &new_user).unwrap();
let new_community = CommunityForm {
name: "test community 5".to_string(),
title: "nada".to_owned(),
description: None,
category_id: 1,
creator_id: inserted_user.id,
removed: None,
deleted: None,
updated: None,
nsfw: false,
};
let inserted_community = Community::create(&conn, &new_community).unwrap();
let new_post = PostForm {
name: "A test post 2".into(),
creator_id: inserted_user.id,
url: None,
body: None,
community_id: inserted_community.id,
removed: None,
deleted: None,
locked: None,
stickied: None,
updated: None,
nsfw: false,
};
let inserted_post = Post::create(&conn, &new_post).unwrap();
let comment_form = CommentForm {
content: "A test comment 32".into(),
creator_id: inserted_user.id,
post_id: inserted_post.id,
parent_id: None,
removed: None,
deleted: None,
read: None,
updated: None,
};
let inserted_comment = Comment::create(&conn, &comment_form).unwrap();
let comment_like_form = CommentLikeForm {
comment_id: inserted_comment.id,
post_id: inserted_post.id,
user_id: inserted_user.id,
score: 1,
};
let _inserted_comment_like = CommentLike::like(&conn, &comment_like_form).unwrap();
let expected_comment_view_no_user = CommentView {
id: inserted_comment.id,
content: "A test comment 32".into(),
creator_id: inserted_user.id,
post_id: inserted_post.id,
community_id: inserted_community.id,
parent_id: None,
removed: false,
deleted: false,
read: false,
banned: false,
banned_from_community: false,
published: inserted_comment.published,
updated: None,
creator_name: inserted_user.name.to_owned(),
score: 1,
downvotes: 0,
upvotes: 1,
user_id: None,
my_vote: None,
saved: None,
};
let expected_comment_view_with_user = CommentView {
id: inserted_comment.id,
content: "A test comment 32".into(),
creator_id: inserted_user.id,
post_id: inserted_post.id,
community_id: inserted_community.id,
parent_id: None,
removed: false,
deleted: false,
read: false,
banned: false,
banned_from_community: false,
published: inserted_comment.published,
updated: None,
creator_name: inserted_user.name.to_owned(),
score: 1,
downvotes: 0,
upvotes: 1,
user_id: Some(inserted_user.id),
my_vote: Some(1),
saved: None,
};
let read_comment_views_no_user = CommentQueryBuilder::create(&conn)
.for_post_id(inserted_post.id)
.list()
.unwrap();
let read_comment_views_with_user = CommentQueryBuilder::create(&conn)
.for_post_id(inserted_post.id)
.my_user_id(inserted_user.id)
.list()
.unwrap();
let like_removed = CommentLike::remove(&conn, &comment_like_form).unwrap();
let num_deleted = Comment::delete(&conn, inserted_comment.id).unwrap();
Post::delete(&conn, inserted_post.id).unwrap();
Community::delete(&conn, inserted_community.id).unwrap();
User_::delete(&conn, inserted_user.id).unwrap();
assert_eq!(expected_comment_view_no_user, read_comment_views_no_user[0]);
assert_eq!(
expected_comment_view_with_user,
read_comment_views_with_user[0]
);
assert_eq!(1, num_deleted);
assert_eq!(1, like_removed);
}
}