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use serde_json::Value;
use std::error::Error;
use std::fs;
use std::path::Path;
const CONFIG_PATH: &str = "/home/adam/.config/forecast";
#[derive(Debug)]
struct WeatherInfo {
icon: char,
temp: i32,
}
fn main() {
let (current_endpoint, forecast_endpoint) = init();
let current_data = req_weather(current_endpoint).unwrap();
let forecast_data = req_weather(forecast_endpoint).unwrap();
let current_weather = parse_current(current_data).unwrap();
let forecast_weather = parse_forecast(forecast_data).unwrap();
let trend = get_trend(current_weather.temp, forecast_weather.temp);
println!(
" {} {}°C {} {} {}°C ",
current_weather.icon,
current_weather.temp,
trend,
forecast_weather.icon,
forecast_weather.temp
);
}
fn init() -> (String, String) {
let city_id = read_config_file("city_id");
let api_key = read_config_file("api_key");
let current_endpoint: String = format!(
"https://api.openweathermap.org/data/2.5/weather?id={}&appid={}&units=metric",
city_id, api_key
);
let forecast_endpoint: String = format!(
"https://api.openweathermap.org/data/2.5/forecast?id={}&appid={}&units=metric&cnt=1",
city_id, api_key
);
(current_endpoint, forecast_endpoint)
}
fn read_config_file(file_name: &str) -> String {
let path = Path::new(CONFIG_PATH).join(file_name);
fs::read_to_string(path.to_string_lossy().to_string()).unwrap()
}
fn req_weather(endpoint: String) -> Result<Value, Box<dyn Error>> {
let resp = reqwest::blocking::get(endpoint)?.text()?;
Ok(serde_json::from_str(&resp)?)
}
fn parse_current(response: Value) -> Option<WeatherInfo> {
let icon_code = response["weather"][0]["icon"].as_str()?;
let temperature = response["main"]["temp"].as_f64()?.round();
Some(WeatherInfo {
icon: get_icon(icon_code),
temp: temperature as i32,
})
}
fn parse_forecast(response: Value) -> Option<WeatherInfo> {
let icon_code = response["list"][0]["weather"][0]["icon"].as_str()?;
let temperature = response["list"][0]["main"]["temp"].as_f64()?.round();
Some(WeatherInfo {
icon: get_icon(icon_code),
temp: temperature as i32,
})
}
fn get_icon(code: &str) -> char {
match code {
"01d" => '', // Clear sky - day
"01n" => '', // Clear sky - night
"02d" => '', // Few clouds (11-25%) - day
"02n" => '', // Few clouds (11-25%) - night
"03d" | "03n" => '', // Scattered clouds (25-50%) - day/night
"04d" | "04n" => '', // Broken / Overcast clouds (51-84% / 85-100%) - day/night
"09d" => '', // Shower rain - day
"09n" => '', // Shower rain - night
"10d" => '', // Moderate / heavy rain - day
"10n" => '', // Moderate / heavy rain - night
"11d" => '', // Thunderstorm - day
"11n" => '', // Thunderstorm - night
"13d" => '', // Snow - day
"13n" => '', // Snow - night
"50d" => '', // Fog - day
"50n" => '', // Fog - night
_ => '', // ??
}
}
fn get_trend(t1: i32, t2: i32) -> char {
if t1 < t2 {
''
} else if t1 > t2 {
''
} else {
''
}
}
|
