use std::{path::PathBuf, sync::OnceLock};

use serde::{Deserialize, Serialize};

use crate::types::Coords;

pub(super) static CONFIG_PATH: OnceLock<PathBuf> = OnceLock::new();
static CONFIG: OnceLock<Config> = OnceLock::new();

pub fn access_config<'a>() -> &'a Config {
    CONFIG.get_or_init(|| {
        ron::from_str(&std::fs::read_to_string(CONFIG_PATH.get().unwrap()).unwrap()).unwrap()
    })
}

#[derive(Serialize, Deserialize, Clone, Debug)]
pub struct Config {
    pub tesla_watch_interval_seconds: u64,
    pub pl_watch_interval_seconds: u64,
    pub pl_timeout_milliseconds: u64,
    pub coords: Coords,
    pub serial_port: String,
    pub baud_rate: u32,
}

impl Default for Config {
    fn default() -> Self {
        Self {
            tesla_watch_interval_seconds: 120,
            pl_watch_interval_seconds: 30,
            pl_timeout_milliseconds: 250,
            coords: Coords {
                latitude: 0.,
                longitude: 0.,
            },
            serial_port: String::from("/dev/ttyUSB0"),
            baud_rate: 9600,
        }
    }
}