use std::path::{Path, PathBuf};
use serde::{Deserialize, Serialize};

#[derive(Deserialize, Serialize, Debug, Clone)]
pub struct Instance {
    pub name: String,
    pub path: Option<PathBuf> // relative to launcher home (or absolute)
}

#[derive(Deserialize, Serialize, Debug, Clone)]
pub struct Profile {
    pub version_id: String,
    pub java_runtime: Option<String>,
    pub instance: String // ugly that this is a string instead of reference to an Instance but whatever I'm lazy
}

impl Instance {
    fn instance_dir(home: impl AsRef<Path>, name: impl AsRef<Path>) -> PathBuf {
        let mut out = home.as_ref().join("instances");
        out.push(name);
        out
    }

    pub fn get_path(&self, home: impl AsRef<Path>) -> PathBuf {
        self.path.as_ref().map(|p| {
            if p.is_relative() {
                Self::instance_dir(home.as_ref(), p)
            } else {
                p.to_owned()
            }
        }).unwrap_or_else(|| Self::instance_dir(home, &self.name))
    }
}