Clean up
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@ -1,134 +0,0 @@
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use std::str;
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use std::fmt;
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use curl::easy::{Easy, List};
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use serde_json::Value;
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//
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// Enums
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//
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#[derive(Debug,PartialEq,Eq,Copy,Clone)]
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enum TemperatureUnits {
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Metric,
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Imperial,
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}
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impl fmt::Display for TemperatureUnits {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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match self {
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TemperatureUnits::Metric => write!(f, "Metric"),
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TemperatureUnits::Imperial => write!(f, "Imperial"),
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}
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}
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}
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// Commandline parsing
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#[derive(Parser, Debug)]
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#[command(version, about, long_about = None)]
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struct CommandlineArgs {
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/// Name of the weather station
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#[arg(short, long, default_value = "khio")]
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station: String,
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}
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//
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// Application options
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//
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#[derive(Debug,Copy,Clone)]
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struct AppOptions {
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units: TemperatureUnits,
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station: String,
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}
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//
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// Application (BarWeather) actions
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struct BarWeatherActions {
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opts :AppOptions,
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}
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impl BarWeatherActions {
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fn check_options(&self) -> bool {
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let mut all_good = true;
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if ! ((self.opts.units == TemperatureUnits::Metric)
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|| (self.opts.units == TemperatureUnits::Imperial)) {
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all_good &= false;
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}
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return all_good;
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}
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fn get_current_temperature(&self, v: Value) -> f32 {
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let deg_c :f32 = v["features"][0]["properties"]["temperature"]["value"]
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.to_string().parse().unwrap();
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return if self.opts.units == TemperatureUnits::Metric { deg_c }
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else { (deg_c * 9.0 / 5.0) + 32.0};
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}
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fn get_temperature_unit(&self) -> String{
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return if self.opts.units == TemperatureUnits::Metric { "°C".to_string() }
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else { "°F".to_string() };
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}
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}
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//
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// Application (BarWeather)
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//
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struct BarWeather {
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acts :BarWeatherActions
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}
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impl BarWeather {
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fn run(self) {
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self.acts.check_options();
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self.get_weather();
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}
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fn get_weather(self) {
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// Print a web page onto stdout
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let mut easy = Easy::new();
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let app = self;
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easy.url("https://api.weather.gov/stations/" + + "/observations?limit=1").unwrap();
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let mut list = List::new();
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list.append("User-Agent: Bar Weather (mahesh@heshapps.com)").unwrap();
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easy.http_headers(list).unwrap();
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easy.write_function(move |data| {
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// To debug returned JSON
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// use std::io::{stdout, Write};
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// stdout().write_all(data).unwrap();
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let v: Value = serde_json::from_str(str::from_utf8(data).unwrap()).unwrap();
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let temperature_value :f32 = app.acts.get_current_temperature(v);
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let temperature_unit :String = app.acts.get_temperature_unit();
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println!("{}{}", temperature_value, temperature_unit);
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println!("{:.2}{}", temperature_value, temperature_unit);
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Ok(data.len())
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}
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).unwrap();
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easy.perform().unwrap();
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}
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}
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//
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// Entry point
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//
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fn main() {
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let app = BarWeather {
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acts: BarWeatherActions {
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opts: AppOptions {
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units: TemperatureUnits::Imperial,
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// units: TemperatureUnits::Metric,
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},
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},
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};
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app.run();
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}
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// References:
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// https://reintech.io/blog/working-with-json-in-rust
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