lemmy/lemmy_db/src/lib.rs

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#[macro_use]
extern crate diesel;
#[macro_use]
extern crate strum_macros;
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#[macro_use]
extern crate lazy_static;
use chrono::NaiveDateTime;
use diesel::{result::Error, *};
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use regex::Regex;
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use serde::{Deserialize, Serialize};
use std::{env, env::VarError};
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pub mod activity;
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 private_message;
pub mod private_message_view;
pub mod schema;
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 type DbPool = diesel::r2d2::Pool<diesel::r2d2::ConnectionManager<diesel::PgConnection>>;
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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,
{
unimplemented!()
}
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}
pub trait Followable<T> {
fn follow(conn: &PgConnection, form: &T) -> Result<Self, Error>
where
Self: Sized;
fn unfollow(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 like(conn: &PgConnection, form: &T) -> Result<Self, Error>
where
Self: Sized;
fn remove(conn: &PgConnection, user_id: i32, item_id: i32) -> 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> {
Some(self)
}
}
impl<T> MaybeOptional<T> for Option<T> {
fn get_optional(self) -> Option<T> {
self
}
}
pub fn get_database_url_from_env() -> Result<String, VarError> {
env::var("LEMMY_DATABASE_URL")
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}
#[derive(EnumString, ToString, Debug, Serialize, Deserialize)]
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pub enum SortType {
Active,
Hot,
New,
TopDay,
TopWeek,
TopMonth,
TopYear,
TopAll,
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}
#[derive(EnumString, ToString, Debug, Serialize, Deserialize)]
pub enum ListingType {
All,
Local,
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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}
pub fn naive_now() -> NaiveDateTime {
chrono::prelude::Utc::now().naive_utc()
}
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pub fn is_email_regex(test: &str) -> bool {
EMAIL_REGEX.is_match(test)
}
pub fn diesel_option_overwrite(opt: &Option<String>) -> Option<Option<String>> {
match opt {
// An empty string is an erase
Some(unwrapped) => {
if !unwrapped.eq("") {
Some(Some(unwrapped.to_owned()))
} else {
Some(None)
}
}
None => None,
}
}
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lazy_static! {
static ref EMAIL_REGEX: Regex =
Regex::new(r"^[a-zA-Z0-9.!#$%&*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$").unwrap();
}
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#[cfg(test)]
mod tests {
use super::fuzzy_search;
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use crate::{get_database_url_from_env, is_email_regex};
use diesel::{Connection, PgConnection};
pub fn establish_unpooled_connection() -> PgConnection {
let db_url = match get_database_url_from_env() {
Ok(url) => url,
Err(e) => panic!(
"Failed to read database URL from env var LEMMY_DATABASE_URL: {}",
e
),
};
PgConnection::establish(&db_url).unwrap_or_else(|_| panic!("Error connecting to {}", db_url))
}
#[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());
}
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#[test]
fn test_email() {
assert!(is_email_regex("gush@gmail.com"));
assert!(!is_email_regex("nada_neutho"));
}
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}