core/src/db.rs

73 lines
1.8 KiB
Rust

use std::env;
use crate::db::errors::DatabaseError;
use crate::db::model_utils::Period;
use crate::db::models::{NewSchedule, Periods};
use crate::types::EmgauwaUid;
use diesel::prelude::*;
use diesel_migrations::{embed_migrations, EmbeddedMigrations, MigrationHarness};
use dotenv::dotenv;
use log::{info, trace};
pub mod errors;
pub mod models;
pub mod schedules;
pub mod schema;
pub mod tag;
mod model_utils;
pub const MIGRATIONS: EmbeddedMigrations = embed_migrations!("migrations");
fn get_connection() -> SqliteConnection {
dotenv().ok();
let database_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set");
SqliteConnection::establish(&database_url)
.unwrap_or_else(|_| panic!("Error connecting to {}", database_url))
}
pub fn run_migrations() {
info!("Running migrations");
let mut connection = get_connection();
connection
.run_pending_migrations(MIGRATIONS)
.expect("Failed to run migrations.");
}
fn init_schedule(schedule: &NewSchedule) -> Result<(), DatabaseError> {
trace!("Initializing schedule {:?}", schedule.name);
match schedules::get_schedule_by_uid(schedule.uid.clone()) {
Ok(_) => Ok(()),
Err(err) => match err {
DatabaseError::NotFound => {
trace!("Schedule {:?} not found, inserting", schedule.name);
let mut connection = get_connection();
diesel::insert_into(schema::schedules::table)
.values(schedule)
.execute(&mut connection)
.map(|_| ())
.map_err(DatabaseError::InsertError)
}
_ => Err(err),
},
}
}
pub fn init(db: &str) {
run_migrations();
init_schedule(&NewSchedule {
uid: &EmgauwaUid::Off,
name: "Off",
periods: &Periods(vec![]),
})
.expect("Error initializing schedule Off");
init_schedule(&NewSchedule {
uid: &EmgauwaUid::On,
name: "On",
periods: &Periods(vec![Period::new_on()]),
})
.expect("Error initializing schedule On");
}