cli/show: add possibility to print path and link

src/cli/show.rs

@@ -19,8 +19,25 @@ use crate::repo::Repository;
 
 #[derive(clap::Args)]
 pub struct Args {
-    #[clap(long)]
-    print_path: bool,
+    part: Option<PrintPart>,
+}
+
+#[derive(clap::ValueEnum, Clone)]
+enum PrintPart {
+    Path,
+    Link,
+}
+
+impl std::str::FromStr for PrintPart {
+    type Err = &'static str;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s {
+            "path" => Ok(PrintPart::Path),
+            "link" => Ok(PrintPart::Link),
+            _ => Err(r#"You can display only "path" or "link""#),
+        }
+    }
 }
 
 pub fn execute(repo: impl Repository, args: Args) {
@@ -34,15 +51,25 @@ pub fn execute(repo: impl Repository, args: Args) {
         }
     };
 
-    if args.print_path {
+    match args.part {
+        None => {
+            println!("Information about your current task:");
+            print_task_detail(&task);
+        }
+        Some(PrintPart::Path) => {
             println!(
                 "{}",
                 task.path
                     .unwrap_or_else(|| std::env::current_dir().expect("Cannot get current dir"))
                     .to_string_lossy()
             )
+        }
+        Some(PrintPart::Link) => {
+            if let Some(link) = task.link {
+                println!("{}", link)
             } else {
-        println!("Information about your current task:");
-        print_task_detail(&task);
+                eprintln!("The current task doesn't contain link")
+            }
+        }
     }
 }