use std::{
	env,
	fs::write
};

mod error;

fn main() {
	//	try to get share file variable
	if let Ok(file) = env::var("ENV_SHARE_FILE") {
		if let Ok(var_string) = env::var("ENV_SHARE_VARS") {
			//	build output
			let mut output = String::new();
			let vars = var_string.split(':');
			for var in vars {
				let value = env::var(var).unwrap_or(String::new());
				if value.is_empty() { continue; }

				output += &format!("{var} = {value}\n");
			}

			//	write to file
			let result = write(&file, output);
			match result {
				Err(_)	=>	error::write_fail(&file),
				_		=>	{ }
			}
		} else { error::vars_unset(); }
	} else { error::file_unset(); }
}