mod cli;
mod current_weater;

use std::process::exit;
use structopt::StructOpt;

use cli::Arguments;
use current_weater::CurrentWeather;

fn main() {
    let opts = Arguments::from_args();
    match opts {
        Arguments::CurrentWeather {
            latitude,
            longitude,
            all,
            is_day,
            temperature,
            windspeed,
            winddirection,
            clean,
        } => {
            if !all && !is_day && !temperature && !windspeed && !winddirection {
                eprintln!("[ERROR] Provide at least one parameter to print, check --help");
                exit(1);
            }

            let result = extract_weather(latitude, longitude);
            let mut weather = result.unwrap_or_else(|_| { 
                eprintln!("[ERROR] Requesting current_weather for Latitude: {latitude}, Longitude: {longitude}");
                exit(1);
            });

            let mut string_vec: Vec<String> = Vec::new();

            if !clean {
                string_vec.push(format!(
                    "=== Current weather for Latitude: {latitude}, Longitude: {longitude} ==="
                ));
            }

            let current_weather_data = weather["current_weather"].take();
            let current_weather = CurrentWeather::new(current_weather_data, clean);

            if is_day || all {
                string_vec.push(current_weather.extract_data("is_day", "Is day"));
            }

            if temperature || all {
                string_vec.push(current_weather.extract_data("temperature", "Temperature"));
            }

            if windspeed || all {
                string_vec.push(current_weather.extract_data("windspeed", "Wind speed"));
            }

            if winddirection || all {
                string_vec.push(current_weather.extract_data("winddirection", "Wind direction"));
            }

            if clean {
                let final_string = string_vec.join(",");
                println!("{final_string}");
            } else {
                let final_string = string_vec.join("\n");
                println!("{final_string}");
            }
        }
    }
}

fn extract_weather(latitude: f32, longitude: f32) -> Result<serde_json::Value, ureq::Error> {
    let url = format!("https://api.open-meteo.com/v1/forecast?latitude={latitude}&longitude={longitude}&current_weather=true");
    let body: serde_json::Value = ureq::get(&url).call()?.into_json()?;
    Ok(body)
}