use std::{env, collections::HashMap, fs::read_to_string, process::{exit, Command}};

pub fn load_config() -> HashMap<String, String> {
   
    let config_path = env::var("CONFIG_PATH").unwrap_or_else(|_| String::from("config"));
    let config = match read_to_string(&config_path) {
        Ok(data) => data,
        Err(err) => {
            eprintln!("cannot load '{config_path}': {err}");
            exit(1);
        },
    };

    let mut map = HashMap::new();
    let lines = config.split("\n").into_iter();

    for line in lines {
        let mut parts = line.trim().split(" ");
        let Some(route) = parts.next() else { continue }; 
        let Some(script) = parts.next() else { continue }; 

        println!("adding entry {route} => {script}");
        map.insert(route.to_owned(), script.to_owned());
    }

    map
}

pub fn handle_script(script: &str, body: Option<&String>) -> Result<String, String> {
    let mut command = Command::new(script);
    if let Some(body) = body {
        command.args([body]);
    }

    let output = match command.output() {
        Ok(o) => o,
        Err(err) => return Err(format!("{err}")),
    };

    Ok(String::from_utf8_lossy(&output.stdout).into_owned())
}