renamed to wkg config --registry-default and added --edit arg to launch default editor

Author: calvinrp

crates/wkg/src/main.rs

@@ -101,8 +101,12 @@ enum Commands {
 #[derive(Args, Debug)]
 struct ConfigArgs {
     /// The default registry domain to use. Overrides configuration file(s).
-    #[arg(long = "default", value_name = "DEFAULT")]
-    default: Option<Registry>,
+    #[arg(long = "default-registry", value_name = "DEFAULT_REGISTRY")]
+    default_registry: Option<Registry>,
+
+    /// Opens editor defined in the `$EDITOR` environment variable.
+    #[arg(long, short, action)]
+    edit: bool,
 
     #[command(flatten)]
     common: Common,
@@ -118,20 +122,39 @@ impl ConfigArgs {
                 .ok_or(anyhow::anyhow!("global config path not available"))?
         };
 
+        if self.edit {
+            let editor = std::env::var("EDITOR").or(Err(anyhow::anyhow!(
+                "failed to read `$EDITOR` environment variable"
+            )))?;
+
+            // create file if it doesn't exist
+            if !path.is_file() {
+                Config::default().to_file(&path).await?;
+            }
+
+            // launch editor
+            std::process::Command::new(editor)
+                .arg(&path)
+                .status()
+                .context("failed to launch editor")?;
+        }
+
         // read file or use default config (not empty config)
         let mut config = match tokio::fs::read_to_string(&path).await {
             Ok(contents) => Config::from_toml(&contents)?,
             Err(err) if err.kind() == std::io::ErrorKind::NotFound => Config::default(),
             Err(err) => return Err(anyhow::anyhow!("error reading config file: {0}", err)),
         };
 
-        if let Some(default) = self.default {
-            // set default registry
-            config.set_default_registry(Some(default));
+        if !self.edit {
+            if let Some(default) = self.default_registry {
+                // set default registry
+                config.set_default_registry(Some(default));
 
-            // write config file
-            config.to_file(&path).await?;
-            println!("Updated config file: {path}", path = path.display());
+                // write config file
+                config.to_file(&path).await?;
+                println!("Updated config file: {path}", path = path.display());
+            }
         }
 
         // print config