use owm_rs::free_api_v25::current::WeatherResponse;
use owm_widg_config::config::Config;
use owm_widg_config::general::ApiVersion;
use std::fs;

mod show_popup;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let path = dirs::config_dir()
        .ok_or("No config dir found")?
        .join("candywidgets/openweathermap.toml");

    let toml_str = fs::read_to_string(&path)
        .map_err(|_| format!("Failed to read config: {}", path.display()))?;

    let cfg: Config = toml::from_str(&toml_str)?;

    match cfg.general.api_version() {
        ApiVersion::Free25 => {
            let cache_path = dirs::cache_dir()
                .ok_or("No cache dir found")?
                .join("candydesktop/owm_widget.json");

            let json_data = fs::read_to_string(&cache_path)?;
            let resp: WeatherResponse = serde_json::from_str(&json_data)?;

            let city = resp.name.clone().unwrap_or_else(|| "Unknown".into());
            let country = resp
                .sys
                .as_ref()
                .and_then(|s| s.country.clone())
                .unwrap_or_else(|| String::new());

            let (weather_main, weather_description, icon) = if let Some(w) = resp.weather.first() {
                (w.main.clone(), w.description.clone(), w.icon.clone())
            } else {
                ("N/A".into(), "N/A".into(), String::new())
            };

            let temp = resp.main.as_ref().and_then(|m| m.temp).unwrap_or(0.0);
            let temperature = format!("{temp:.1}");
            let unit = match cfg.query_params.units.as_str() {
                "metric" => 'C',
                "imperial" => 'F',
                "standard" => 'K',
                _ => '?',
            };
            
            show_popup::show_popup(
                city,
                country,
                weather_main,
                weather_description,
                icon,
                temperature,
                unit,
            )?;
        }
        other => return Err(format!("Unsupported api_version: {other:?}").into()),
    }

    Ok(())
}