Add env feature for clap, add command to set volume.

Cargo.toml

@@ -7,7 +7,7 @@ edition = "2021"
 
 [dependencies]
 anyhow = "1.0.56"
-clap = { version = "3.1.6", features = ["cargo", "unicode", "derive"] }
+clap = { version = "3.1.6", features = ["cargo", "unicode", "derive", "env"] }
 color-eyre = "0.6.1"
 html-escape = "0.2.11"
 reqwest = { version = "0.11.10", features = ["blocking", "json"] }

src/main.rs

@@ -5,7 +5,7 @@ use clap::Parser;
 use color_eyre::{eyre::WrapErr, Result};
 use serde_json::json;
 use std::fmt::Display;
-use tracing::debug;
+use tracing::{debug, trace};
 use tracing_subscriber::EnvFilter;
 
 /// Bert
@@ -21,11 +21,11 @@ struct Opts {
     entity: String,
 
     /// API token
-    #[clap(short, long)]
+    #[clap(short, long, env)]
     token: Option<String>,
 
     /// File with the API token
-    #[clap(long)]
+    #[clap(long, env)]
     token_file: Option<PathBuf>,
 
     /// Use HTTP instead of HTTPS
@@ -47,6 +47,8 @@ enum Command {
     VolumeUp,
     /// Lower volume
     VolumeDown,
+    /// Set volume to value
+    Volume { volume: u8 },
 }
 
 impl Display for Command {
@@ -55,6 +57,7 @@ impl Display for Command {
             Command::PlayPause => write!(f, "Play/Pause"),
             Command::VolumeUp => write!(f, "Volume Up"),
             Command::VolumeDown => write!(f, "Volume Down"),
+            Command::Volume { volume } => write!(f, "Volume {volume}"),
         }
     }
 }
@@ -91,9 +94,11 @@ fn main() -> Result<()> {
 
     if let Some(token) = token {
         if let Some(cmd) = cmd {
+            debug!("Calling service '{cmd}' on entity '{entity}'");
             call_service(cmd, host, entity, insecure, token)
                 .wrap_err_with(|| format!("Unable to execute command {cmd}"))?;
         } else {
+            debug!("Retrieving state of '{entity}' on '{host}'");
             get_now_playing(host, entity, insecure, token)
                 .wrap_err("Unable to retrieve now playing info")?;
         }
@@ -131,7 +136,7 @@ fn get_now_playing(host: String, entity: String, insecure: bool, token: String)
         .send()?
         .json::<serde_json::Value>()?;
 
-    debug!("Response: {:#?}", response);
+    trace!("Response: {:#?}", response);
 
     if response["state"] == "playing" {
         let attributes = &response["attributes"];
@@ -180,6 +185,7 @@ fn call_service(
         Command::PlayPause => "media_play_pause",
         Command::VolumeUp => "volume_up",
         Command::VolumeDown => "volume_down",
+        Command::Volume { .. } => "volume_set",
     };
 
     let url = format!(
@@ -189,7 +195,13 @@ fn call_service(
         cmd
     );
 
-    let body = json!({ "entity_id": entity }).to_string();
+    let body = match command {
+        Command::Volume { volume } => {
+            json!({ "entity_id": entity, "volume_level": volume.clamp(0, 100) as f32 / 100. })
+                .to_string()
+        }
+        _ => json!({ "entity_id": entity }).to_string(),
+    };
 
     let client = reqwest::blocking::Client::new();
     let response = client