lemmy/server/src/db/mod.rs

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extern crate lazy_static;
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use crate::settings::Settings;
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use diesel::dsl::*;
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use diesel::r2d2::*;
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use diesel::result::Error;
use diesel::*;
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use serde::{Deserialize, Serialize};
pub mod category;
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pub mod comment;
pub mod comment_view;
pub mod community;
pub mod community_view;
pub mod moderator;
pub mod moderator_views;
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pub mod password_reset_request;
pub mod post;
pub mod post_view;
pub mod site;
pub mod site_view;
pub mod user;
pub mod user_mention;
pub mod user_mention_view;
pub mod user_view;
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pub trait Crud<T> {
fn create(conn: &PgConnection, form: &T) -> Result<Self, Error>
where
Self: Sized;
fn read(conn: &PgConnection, id: i32) -> Result<Self, Error>
where
Self: Sized;
fn update(conn: &PgConnection, id: i32, form: &T) -> Result<Self, Error>
where
Self: Sized;
fn delete(conn: &PgConnection, id: i32) -> Result<usize, Error>
where
Self: Sized;
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}
pub trait Followable<T> {
fn follow(conn: &PgConnection, form: &T) -> Result<Self, Error>
where
Self: Sized;
fn ignore(conn: &PgConnection, form: &T) -> Result<usize, Error>
where
Self: Sized;
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}
pub trait Joinable<T> {
fn join(conn: &PgConnection, form: &T) -> Result<Self, Error>
where
Self: Sized;
fn leave(conn: &PgConnection, form: &T) -> Result<usize, Error>
where
Self: Sized;
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}
pub trait Likeable<T> {
fn read(conn: &PgConnection, id: i32) -> Result<Vec<Self>, Error>
where
Self: Sized;
fn like(conn: &PgConnection, form: &T) -> Result<Self, Error>
where
Self: Sized;
fn remove(conn: &PgConnection, form: &T) -> Result<usize, Error>
where
Self: Sized;
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}
pub trait Bannable<T> {
fn ban(conn: &PgConnection, form: &T) -> Result<Self, Error>
where
Self: Sized;
fn unban(conn: &PgConnection, form: &T) -> Result<usize, Error>
where
Self: Sized;
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}
pub trait Saveable<T> {
fn save(conn: &PgConnection, form: &T) -> Result<Self, Error>
where
Self: Sized;
fn unsave(conn: &PgConnection, form: &T) -> Result<usize, Error>
where
Self: Sized;
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}
pub trait Readable<T> {
fn mark_as_read(conn: &PgConnection, form: &T) -> Result<Self, Error>
where
Self: Sized;
fn mark_as_unread(conn: &PgConnection, form: &T) -> Result<usize, Error>
where
Self: Sized;
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}
pub trait MaybeOptional<T> {
fn get_optional(self) -> Option<T>;
}
impl<T> MaybeOptional<T> for T {
fn get_optional(self) -> Option<T> {
return Some(self);
}
}
impl<T> MaybeOptional<T> for Option<T> {
fn get_optional(self) -> Option<T> {
return self;
}
}
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lazy_static! {
static ref PG_POOL: Pool<ConnectionManager<PgConnection>> = {
let db_url = Settings::get().get_database_url();
let manager = ConnectionManager::<PgConnection>::new(&db_url);
Pool::builder()
.max_size(Settings::get().database.pool_size)
.build(manager)
.expect(&format!("Error connecting to {}", db_url))
};
}
pub fn establish_connection() -> PooledConnection<ConnectionManager<PgConnection>> {
return PG_POOL.get().unwrap();
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}
#[derive(EnumString, ToString, Debug, Serialize, Deserialize)]
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pub enum SortType {
Hot,
New,
TopDay,
TopWeek,
TopMonth,
TopYear,
TopAll,
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}
#[derive(EnumString, ToString, Debug, Serialize, Deserialize)]
pub enum ListingType {
All,
Subscribed,
Community,
}
#[derive(EnumString, ToString, Debug, Serialize, Deserialize)]
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pub enum SearchType {
All,
Comments,
Posts,
Communities,
Users,
Url,
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}
pub fn fuzzy_search(q: &str) -> String {
let replaced = q.replace(" ", "%");
format!("%{}%", replaced)
}
pub fn limit_and_offset(page: Option<i64>, limit: Option<i64>) -> (i64, i64) {
let page = page.unwrap_or(1);
let limit = limit.unwrap_or(10);
let offset = limit * (page - 1);
(limit, offset)
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}
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#[cfg(test)]
mod tests {
use super::fuzzy_search;
#[test]
fn test_fuzzy_search() {
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let test = "This is a fuzzy search";
assert_eq!(fuzzy_search(test), "%This%is%a%fuzzy%search%".to_string());
}
}