Async openweather example

async-openweather.rs

async fn get_response(location: &str) -> Result<String, reqwest::Error> {
    let base_http = "https://api.openweathermap.org/data/2.5/weather?q=".to_string();
    let units = "metric";
    let addr = base_http + &location + "&appid=" + API_KEY + "&units=" + &units;
    let json = reqwest::get(&addr)
        .await?
        .text()
        .await?;
    Ok(json)
}

async fn parse_json(json: &str) -> Result<OpenWeatherData, serde_json::error::Error> {
    let data: OpenWeatherData = serde_json::from_str(&json.to_string())?;
    Ok(data)
}

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {

    let response = get_response("Taipei").await;
    let json = match response {
        Ok(test) => test,
        Err(_) => "Error in processing".to_string(),
    };  
    println!("{}", json);

    let weather_data = parse_json(&json).await;
    match weather_data {
        Ok(data) => println!("{}", data.main.temp),
        Err(_) => println!("Error in parsing"),
    };  
    Ok(())
}