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pub mod clean;
pub mod raw;
use serde::de::DeserializeOwned;
use std::fs;
use std::path::{Path, PathBuf};
use crate::error::AppResult;
use crate::CONFIG_HIERARCHY;
pub trait TomlConfigFile {
fn get_config(file_name: &str) -> Self;
}
// searches a list of folders for a given file in order of preference
pub fn search_directories<P>(file_name: &str, directories: &[P]) -> Option<PathBuf>
where
P: AsRef<Path>,
{
for path in directories.iter() {
let file_path = path.as_ref().join(file_name);
if file_path.exists() {
return Some(file_path);
}
}
None
}
pub fn search_config_directories(file_name: &str) -> Option<PathBuf> {
search_directories(file_name, &CONFIG_HIERARCHY)
}
fn parse_file_to_config<T, S>(file_path: &Path) -> AppResult<S>
where
T: DeserializeOwned,
S: From<T>,
{
let file_contents = fs::read_to_string(file_path)?;
let config = toml::from_str::<T>(&file_contents)?;
Ok(S::from(config))
}
pub fn parse_config_or_default<T, S>(file_name: &str) -> S
where
T: DeserializeOwned,
S: From<T> + std::default::Default,
{
match search_config_directories(file_name) {
Some(file_path) => match parse_file_to_config::<T, S>(&file_path) {
Ok(s) => s,
Err(e) => {
eprintln!("Failed to parse {}: {}", file_name, e);
S::default()
}
},
None => S::default(),
}
}
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