/*
 * This file is part of sdbclient
 * Copyright (C) 2022 Jonni Liljamo <jonni@liljamo.com>
 *
 * Licensed under GPL-3.0-only.
 * See LICENSE for licensing information.
 */

use bevy::prelude::*;
use bevy_console::PrintConsoleLine;

pub fn load<T: Default + for<'a> serde::Deserialize<'a>>(
    file_path: &str,
    mut console: EventWriter<PrintConsoleLine>,
) -> T {
    match std::path::Path::new(file_path).exists() {
        true => {
            console.send(PrintConsoleLine::new(format!(
                "sl::load found '{}'",
                file_path
            )));
            let yaml: Vec<u8> = std::fs::read(file_path.clone()).unwrap();
            serde_json::from_str(std::str::from_utf8(&yaml).unwrap()).expect(&format!(
                "sl::load couldn't deserialize the config at '{}'",
                file_path
            ))
        }
        false => {
            console.send(PrintConsoleLine::new(format!(
                "sl::load couldn't find '{}', using defaults",
                file_path
            )));
            T::default()
        }
    }
}

pub fn save<T>(
    target_dir: &str,
    file_name: &str,
    value: &T,
    mut console: EventWriter<PrintConsoleLine>,
) -> bool
where
    T: ?Sized + serde::Serialize,
{
    let file_path: String = format!("{}/{}", target_dir, file_name);
    let yaml: String = serde_json::to_string(&value).unwrap();

    match std::path::Path::new(target_dir).exists() {
        true => {}
        false => {
            console.send(PrintConsoleLine::new(format!(
                "sl::save creating target dir '{}'",
                target_dir
            )));
            match std::fs::create_dir_all(target_dir) {
                Ok(_) => {}
                Err(_) => {
                    console.send(PrintConsoleLine::new(format!(
                        "sl::save couldn't create target dir '{}'",
                        target_dir
                    )));
                    console.send(PrintConsoleLine::new(format!(
                        "sl::save nothing will be saved!"
                    )));
                    return false;
                }
            }
        }
    }

    match std::fs::write(&file_path, yaml) {
        Ok(_) => {
            console.send(PrintConsoleLine::new(format!(
                "sl::save wrote file '{}'",
                file_path
            )));
            true
        }
        Err(_) => {
            console.send(PrintConsoleLine::new(format!(
                "sl::save couldn't write file '{}'",
                file_path
            )));
            false
        }
    }
}