iowo/crates/app/src/config.rs

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use clap::Parser;
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use self::{
cli::Args,
config_file::{find_config_file, Configs},
};
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mod cli;
mod config_file;
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/// this struct may hold all configuration
pub struct Config {
pub startup_msg: bool,
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}
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impl Config {
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pub fn read() -> Self {
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let args = Args::parse();
let config_path = if let Some(config_path) = args.config_path {
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Ok(config_path)
} else {
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find_config_file()
};
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let file_config = if let Ok(config_path) = config_path {
let file_config = Configs::read(config_path);
match file_config {
Ok(c) => Some(c),
Err(e) => {
eprintln!("Config error: {e:?}");
eprintln!("Proceeding with defaults or cli args...");
None
}
}
} else {
None
};
if let Some(file_config) = file_config {
Self {
// this is negated because to an outward api, the negative is more intuitive,
// while in the source the other way around is more intuitive
startup_msg: !(args.no_startup_message || file_config.no_startup_message),
}
} else {
Self {
startup_msg: !args.no_startup_message,
}
}
}
}
pub mod error {
#[derive(Debug)]
pub enum ConfigError {
NoConfigDir,
NoConfigFileFound,
IoError(std::io::Error),
UnknownExtension(Option<String>),
SerdeJsonError(serde_json::Error),
SerdeRonError(ron::error::SpannedError),
}
impl From<std::io::Error> for ConfigError {
fn from(value: std::io::Error) -> Self {
Self::IoError(value)
}
}
impl From<serde_json::Error> for ConfigError {
fn from(value: serde_json::Error) -> Self {
Self::SerdeJsonError(value)
}
}
impl From<ron::error::SpannedError> for ConfigError {
fn from(value: ron::error::SpannedError) -> Self {
Self::SerdeRonError(value)
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}
}
}