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use directories::{ProjectDirs, UserDirs};
use serde::{Deserialize, Serialize};
use std::{collections::HashSet, fs};
use expanduser::expanduser;
#[derive(Serialize, Deserialize)]
pub struct Config {
pub music_root: String,
pub audio_exts: HashSet<String>,
pub skip_window_secs: u64,
pub temperature: f32,
pub low_weight: f32,
pub mid_weight: f32,
pub high_weight: f32,
pub max_weight: f32,
pub lookback_window_halflife_in_entries: u16,
}
fn default_config_path() -> String {
let name = "mood.json";
ProjectDirs::from("qualifier", "organisation", "mood")
.and_then(|pd| {
pd.config_dir()
.join(name)
.to_str()
.map(std::string::ToString::to_string)
})
.unwrap_or(format!("~/.config/mood/{name}"))
}
impl Config {
pub fn try_load() -> Result<Config, String> {
expanduser(default_config_path())
.map_err(|e| e.to_string())
.and_then(|p| fs::read_to_string(p).map_err(|e| e.to_string()))
.and_then(|contents| serde_json::from_str(&contents).map_err(|e| e.to_string()))
}
pub fn try_save(&self) -> Result<(), String> {
let path = expanduser(default_config_path()).map_err(|e| e.to_string())?;
_ = path.parent().map(std::fs::create_dir_all);
let serialised = serde_json::to_string_pretty(self)
.map_err(|e| format!("Failed to serialize config: {e}"))?;
fs::write(&path, serialised).map_err(|e| format!("Failed to write config file: {e}"))?;
Ok(())
}
}
impl Default for Config {
fn default() -> Config {
Config {
music_root: UserDirs::new()
.and_then(|u| {
u.audio_dir()
.and_then(|p| p.to_str().map(std::string::ToString::to_string))
})
.unwrap_or("~/Music".to_string()),
audio_exts: ["mp3", "flac", "wav", "m4a", "ogg", "vorbis", "mp4"]
.into_iter()
.map(String::from)
.collect(),
skip_window_secs: 60,
temperature: 0.6,
low_weight: 0.25,
mid_weight: 0.5,
high_weight: 0.75,
max_weight: 1.0,
lookback_window_halflife_in_entries: 128,
}
}
}
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