src/settings.rs

   1 use std::fs::File;
   2
   3 use ron::{
   4     de::from_reader,
   5     ser::{to_writer_pretty, PrettyConfig},
   6 };
   7 use serde::{Deserialize, Serialize};
   8
   9 use crate::rgb::RGB;
  10
  11 #[derive(Debug, Deserialize, Serialize)]
  12 pub enum MachineName {
  13     Jiji,
  14     LyssMetal,
  15 }
  16
  17 #[derive(Debug, Deserialize, Serialize)]
  18 pub struct Settings {
  19     pub machine_name: MachineName,
  20     pub cold_color: RGB,
  21     pub hot_color: RGB,
  22     // Average temperature between CPU and GPU.
  23     pub cold_temperature: f32,
  24     pub hot_temperature: f32,
  25 }
  26
  27 type Result<T> = std::result::Result<T, Box<dyn std::error::Error>>;
  28
  29 impl Settings {
  30     fn default() -> Self {
  31         Settings {
  32             machine_name: MachineName::Jiji,
  33             cold_color: RGB {
  34                 red: 0,
  35                 green: 255,
  36                 blue: 40,
  37             },
  38             hot_color: RGB {
  39                 red: 255,
  40                 green: 0,
  41                 blue: 0,
  42             },
  43             cold_temperature: 55.,
  44             hot_temperature: 75.,
  45         }
  46     }
  47
  48     pub fn read(file_path: &str) -> Result<Settings> {
  49         match File::open(file_path) {
  50             Ok(file) => from_reader(file).map_err(|e| e.into()),
  51             Err(_) => {
  52                 let file = File::create(file_path)?;
  53                 let default_config = Settings::default();
  54                 to_writer_pretty(file, &default_config, PrettyConfig::new())?;
  55                 Ok(default_config)
  56             }
  57         }
  58     }
  59 }