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use std::env;
use super::{Context, Module, RootModuleConfig, SegmentConfig};
use crate::configs::username::UsernameConfig;
use crate::utils;
/// Creates a module with the current user's username
///
/// Will display the username if any of the following criteria are met:
/// - The current user isn't the same as the one that is logged in (`$LOGNAME` != `$USER`)
/// - The current user is root (UID = 0)
/// - The user is currently connected as an SSH session (`$SSH_CONNECTION`)
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
let user = env::var("USER").ok();
let logname = env::var("LOGNAME").ok();
let ssh_connection = env::var("SSH_CONNECTION").ok();
const ROOT_UID: Option<u32> = Some(0);
let user_uid = get_uid();
let mut module = context.new_module("username");
let config: UsernameConfig = UsernameConfig::try_load(module.config);
if user != logname || ssh_connection.is_some() || user_uid == ROOT_UID || config.show_always {
let module_style = match user_uid {
Some(0) => config.style_root,
_ => config.style_user,
};
module.set_style(module_style);
module.create_segment("username", &SegmentConfig::new(&user?));
Some(module)
} else {
None
}
}
fn get_uid() -> Option<u32> {
utils::exec_cmd("id", &["-u"])?
.stdout
.trim()
.parse::<u32>()
.ok()
}
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