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use log::*;
use serde::{Deserialize, Serialize};
use std::convert::TryFrom;
use std::fs;
use toml::Value;
use toml::value::Array;
#[derive(Debug, Deserialize, Serialize)]
struct TOMLConfig {
audio: Option<AudioConfig>,
servers: Option<Array>,
}
#[derive(Clone, Debug)]
pub struct Config {
pub audio: Option<AudioConfig>,
pub servers: Option<Vec<ServerConfig>>,
}
impl Config {
pub fn write_default_cfg(&self) -> Result<(), std::io::Error> {
let path = get_cfg_path();
let path = std::path::Path::new(&path);
// Possible race here. It's fine since it shows when:
// 1) the file doesn't exist when checked and is then created
// 2) the file exists when checked but is then removed
// If 1) we don't do anything anyway so it's fine, and if 2) we
// immediately re-create the file which, while not perfect, at least
// should work. Unless the file is removed AND the permissions
// change, but then we don't have permissions so we can't
// do anything anyways.
if !path.exists() {
warn!("config file {} does not exist, ignoring", path.display());
Ok(())
} else {
fs::write(path, toml::to_string(&TOMLConfig::from(self.clone())).unwrap())
}
}
}
#[derive(Clone, Debug, Deserialize, Serialize)]
pub struct AudioConfig {
pub input_volume: Option<f32>,
}
#[derive(Clone, Debug, Deserialize, Serialize)]
pub struct ServerConfig {
pub name: String,
pub host: String,
pub port: Option<u16>,
pub username: Option<String>,
pub password: Option<String>,
}
fn get_cfg_path() -> String {
".mumdrc".to_string() //TODO XDG_CONFIG and whatever
}
impl TryFrom<TOMLConfig> for Config {
type Error = toml::de::Error;
fn try_from(config: TOMLConfig) -> Result<Self, Self::Error> {
Ok(Config {
audio: config.audio,
servers: config.servers.map(|servers| servers
.into_iter()
.map(|s| s.try_into::<ServerConfig>())
.collect())
.transpose()?,
})
}
}
impl From<Config> for TOMLConfig {
fn from(config: Config) -> Self {
TOMLConfig {
audio: config.audio,
servers: config.servers.map(|servers| servers
.into_iter()
.map(|s| Value::try_from::<ServerConfig>(s).unwrap())
.collect()),
}
}
}
pub fn read_default_cfg() -> Option<Config> {
Some(Config::try_from(
toml::from_str::<TOMLConfig>(
&match fs::read_to_string(get_cfg_path()) {
Ok(f) => {
f.to_string()
},
Err(_) => {
return None
}
}
).expect("invalid TOML in config file") //TODO
).expect("invalid config in TOML")) //TODO
}
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