use serde::{Deserialize, Serialize};
use tauri::{AppHandle, Manager};

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Reader {
    pub host: String,
    pub port: u16,
}

#[derive(Debug, Clone, Default, Serialize, Deserialize)]
struct Preferences {
    #[serde(default)]
    reader: Vec<Reader>,
}

pub fn load(app: &AppHandle) -> Option<Reader> {
    let path = app.path().app_data_dir().ok()?.join("preferences.toml");
    let contents = std::fs::read_to_string(path).ok()?;
    let preferences: Preferences = toml::from_str(&contents).ok()?;
    preferences.reader.into_iter().next()
}

pub fn save(app: &AppHandle, reader: Reader) -> Result<(), String> {
    let dir = app.path().app_data_dir().map_err(|err| err.to_string())?;
    std::fs::create_dir_all(&dir).map_err(|err| err.to_string())?;
    let preferences = Preferences {
        reader: vec![reader],
    };
    let contents = toml::to_string_pretty(&preferences).map_err(|err| err.to_string())?;
    std::fs::write(dir.join("preferences.toml"), contents).map_err(|err| err.to_string())
}