Add Config that is parseable from a file

Cargo.toml

@@ -5,13 +5,16 @@ edition = "2021"
 build = "build.rs"
 
 [dependencies]
-clap = "4.5.13"
+clap = { version = "4.5.13", features = ["derive", "env"] }
+clap-serde-derive = "0.2.1"
 color-eyre = "0.6.3"
 env_logger = "0.11.5"
 log = "0.4.22"
 nom = "7.1.3"
 paste = "1.0.15"
+serde = "1.0.209"
 thiserror = "1.0.63"
+toml = "0.8.19"
 urlencoding = "2.1.3"
 users = "0.11.0"
 

src/config.rs

@@ -0,0 +1,38 @@
+use clap_serde_derive::ClapSerde;
+use color_eyre::Result;
+use serde::{Deserialize, Serialize};
+use std::{fs, path::PathBuf, time::Duration};
+
+#[allow(clippy::module_name_repetitions)]
+#[derive(ClapSerde, Serialize, Deserialize, Debug, PartialEq, Eq)]
+pub struct Config {
+ /// Timeout in seconds for requests that show dialogs to the user.
+ /// E.g. GETPIN, CONFIRM, etc.
+ #[arg(short, long, value_name = "TIMEOUT_IN_SECONDS", value_parser = parse_duration, default_value = "300")]
+ pub timeout_in_seconds: Option<Duration>,
+
+ /// The command to run when a user input is required.
+ /// It must print the input to stdout.
+ #[arg(
+ short,
+ long,
+ value_name = "COMMAND",
+ value_delimiter = ' ',
+ num_args = 1..,
+ default_value = "walker --password",
+ )]
+ pub command: Vec<String>,
+}
+
+fn parse_duration(s: &str) -> Result<Duration> {
+ Ok(Duration::from_secs(s.parse::<u64>()?))
+}
+
+impl TryFrom<&PathBuf> for Config {
+ type Error = color_eyre::Report;
+
+ fn try_from(path: &PathBuf) -> Result<Self> {
+ let data = fs::read_to_string(path)?;
+ toml::from_str(&data).map_err(Into::into)
+ }
+}