mailpot/core/make_migrations.rs

93 lines
3.4 KiB
Rust

/*
* This file is part of mailpot
*
* Copyright 2023 - Manos Pitsidianakis
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
use std::{fs::read_dir, io::Write, path::Path};
pub fn make_migrations<M: AsRef<Path>, O: AsRef<Path>>(migrations_path: M, output_file: O) {
let migrations_folder_path = migrations_path.as_ref();
let output_file_path = output_file.as_ref();
let mut regen = false;
let mut paths = vec![];
let mut undo_paths = vec![];
for entry in read_dir(migrations_folder_path).unwrap() {
let entry = entry.unwrap();
let path = entry.path();
if path.is_dir() || path.extension().map(|os| os.to_str().unwrap()) != Some("sql") {
continue;
}
if is_output_file_outdated(&path, output_file_path).unwrap() {
regen = true;
}
if path
.file_name()
.unwrap()
.to_str()
.unwrap()
.ends_with("undo.sql")
{
undo_paths.push(path);
} else {
paths.push(path);
}
}
if regen {
paths.sort();
undo_paths.sort();
let mut migr_rs = OpenOptions::new()
.write(true)
.create(true)
.truncate(true)
.open(output_file_path)
.unwrap();
migr_rs
.write_all(b"\n//(user_version, redo sql, undo sql\n&[")
.unwrap();
for (i, (p, u)) in paths.iter().zip(undo_paths.iter()).enumerate() {
// This should be a number string, padded with 2 zeros if it's less than 3
// digits. e.g. 001, \d{3}
let num = p.file_stem().unwrap().to_str().unwrap();
if !u.file_name().unwrap().to_str().unwrap().starts_with(num) {
panic!("Undo file {u:?} should match with {p:?}");
}
if num.parse::<u32>().is_err() {
panic!("Migration file {p:?} should start with a number");
}
assert_eq!(num.parse::<usize>().unwrap(), i + 1, "migration sql files should start with 1, not zero, and no intermediate numbers should be missing. Panicked on file: {}", p.display());
migr_rs.write_all(b"(").unwrap();
migr_rs
.write_all(num.trim_start_matches('0').as_bytes())
.unwrap();
migr_rs.write_all(b",\"").unwrap();
migr_rs
.write_all(std::fs::read_to_string(p).unwrap().as_bytes())
.unwrap();
migr_rs.write_all(b"\",\"").unwrap();
migr_rs
.write_all(std::fs::read_to_string(u).unwrap().as_bytes())
.unwrap();
migr_rs.write_all(b"\"),").unwrap();
}
migr_rs.write_all(b"]").unwrap();
migr_rs.flush().unwrap();
}
}