MPD and weather module

src/main.rs

@@ -1,5 +1,6 @@
 use std::str;
 use std::fmt;
+use std::process::{Stdio, Command};
 use curl::easy::{Easy, List};
 use serde_json::Value;
 use clap::Parser;
@@ -57,53 +58,88 @@ struct AppOptions {
 //
 // Application (BarWeather)
 //
+#[derive(Clone)]
 struct BarWeather {
     // acts    :BarWeatherActions
     opts :AppOptions,
 }
 
 impl BarWeather {
-    fn run(self) {
-        self.check_options();
-        self.get_weather();
-    }
-
-    fn get_weather(self) {
-        // Print a web page onto stdout
-        let mut curl = Easy::new();
-        let url_string_1 :String = "https://api.weather.gov/stations/".to_owned();
-        let url_string_2 :&str   = self.opts.station.as_str();
-        let url_string_3 :String = "/observations?limit=1".to_owned();
-
-        let url_string = url_string_1 + url_string_2 + &url_string_3;
-
-        curl.url(url_string.as_str()).unwrap();
-
-        let mut list = List::new();
-        list.append("User-Agent: Bar Weather (mahesh@heshapps.com)").unwrap();
-        curl.http_headers(list).unwrap();
-
-        curl.write_function(move |data| {
-            // To debug returned JSON
-            if self.opts.debug_json {
-                use std::io::{stdout, Write};
-                println!("-----> Start of debug");
-                stdout().write_all(data).unwrap();
-                println!("-----> End of debug");
-            }
-
-            let v: Value = serde_json::from_str(str::from_utf8(data).unwrap()).unwrap();
-            let temperature_value :f32 = self.get_current_temperature(v);
-            let temperature_unit :String = self.get_temperature_unit();
-
-            println!("{:.2}{}", temperature_value, temperature_unit);
-
-            Ok(data.len())
+    // --------------------
+    fn run(&self) {
+        if self.opts.debug_json {
+            self.debug_msg("Debugging ...");
         }
-        ).unwrap();
-        curl.perform().unwrap();
+        self.check_options();
+        let mut bar_modules = Vec::new();
+
+        bar_modules.push(self.clone().get_weather());
+        bar_modules.push(self.clone().get_music());
+
+        println!("{}", bar_modules.join(" | "));
     }
 
+    // --------------------
+    fn get_weather(self) -> String {
+        // Print a web page onto stdout
+        let mut curl        = Easy::new();
+        let mut url_string  = Vec::new();
+        let mut curl_ret    = Vec::new();
+
+        url_string.push("https://api.weather.gov/stations/".to_owned());
+        url_string.push(self.opts.station.to_owned());
+        url_string.push("/observations?limit=1".to_owned());
+
+        curl.url(url_string.concat().as_str()).unwrap();
+        {
+            let mut list = List::new();
+            list.append("User-Agent: Bar Weather (mahesh@heshapps.com)").unwrap();
+            curl.http_headers(list).unwrap();
+
+            let mut transfer = curl.transfer();
+
+            transfer.write_function(|data| {
+                curl_ret.extend_from_slice(data);
+                Ok(data.len())
+            }).unwrap();
+            transfer.perform().unwrap();
+        }
+        if self.opts.debug_json {
+            println!("-----> curl_data - [{}]", std::str::from_utf8(&curl_ret).unwrap());
+        }
+
+        let v: Value = serde_json::from_str(str::from_utf8(&curl_ret).unwrap()).unwrap();
+        let temperature_value :f32 = self.get_current_temperature(v);
+        let temperature_unit :String = self.get_temperature_unit();
+
+        return format!("{:.2}{}", temperature_value, temperature_unit);
+    }
+
+    // --------------------
+    fn get_music(&self) -> String {
+        // MPD format options here:
+        //   https://manpages.ubuntu.com/manpages/plucky/man1/mpc.1.html
+        let current_output = Command::new("mpc")
+                            .arg("--format")
+                            .arg("[%artist% - ][%title%]")
+                            .arg("current")
+                            .stdout(Stdio::piped())
+                            .output()
+                            .unwrap();
+        let mut current_stdout = String::from_utf8(current_output.stdout).unwrap();
+        current_stdout.pop();
+        let progress_output = Command::new("mpc")
+                            .arg("status")
+                            .arg("%percenttime% %totaltime%")
+                            .stdout(Stdio::piped())
+                            .output()
+                            .unwrap();
+        let mut progress_stdout = String::from_utf8(progress_output.stdout).unwrap();
+        progress_stdout.pop();
+        return format!("{} [{}]", current_stdout, progress_stdout);
+    }
+
+    // --------------------
     fn check_options(&self) -> bool {
         let mut all_good = true;
 
@@ -115,6 +151,7 @@ impl BarWeather {
         return all_good;
     }
 
+    // --------------------
     fn get_current_temperature(&self, v: Value) -> f32 {
         let deg_c :f32 = v["features"][0]["properties"]["temperature"]["value"]
                             .to_string().parse().unwrap();
@@ -123,10 +160,16 @@ impl BarWeather {
                                                          else { (deg_c * 9.0 / 5.0) + 32.0};
     }
 
+    // --------------------
     fn get_temperature_unit(&self) -> String{
         return if self.opts.units == TemperatureUnits::Metric { "°C".to_string() }
                                                          else { "°F".to_string() };
     }
+
+    // --------------------
+    fn debug_msg(&self, msg: &str) {
+        println!("[Debug ] -----> {}", msg);
+    }
 }
 
 //