cli: improve Author labels

When an alias cannot be found for an `Author` the DID can be repeated eg.

    ✓ accepted by z6MkkfM…jXVsVz5 z6MkkfM…jXVsVz5

To prevent this we output one of four cases:

* `(<alias>, (you))` -- the `Author` is the local peer and has an alias
* `(<did>, (you))` -- the `Author` is the local peer and has no alias
* `(<alias>, <did>)` -- the `Author` is another peer and has an alias
* `(<blank>, <did>)` -- the `Author` is another peer and has no alias

Notably, we output a blank `Label` when no alias was found.

Signed-off-by: Fintan Halpenny <fintan.halpenny@gmail.com>
X-Clacks-Overhead: GNU Terry Pratchett

radicle-cli/src/terminal/format.rs

@@ -136,7 +136,7 @@ pub struct Author<'a> {
 
 impl<'a> Author<'a> {
     pub fn new(nid: &'a NodeId, profile: &Profile) -> Author<'a> {
-        let alias = profile.aliases().alias(nid);
+        let alias = profile.alias(nid);
 
         Self {
             nid,
@@ -157,28 +157,31 @@ impl<'a> Author<'a> {
         }
     }
 
+    /// Get the labels of the `Author`. The labels can take the following forms:
+    ///
+    ///   * `(<alias>, (you))` -- the `Author` is the local peer and has an alias
+    ///   * `(<did>, (you))` -- the `Author` is the local peer and has no alias
+    ///   * `(<alias>, <did>)` -- the `Author` is another peer and has an alias
+    ///   * `(<blank>, <did>)` -- the `Author` is another peer and has no alias
     pub fn labels(self) -> (term::Label, term::Label) {
-        let alias = match &self.alias {
+        let alias = match self.alias.as_ref() {
             Some(alias) => term::format::primary(alias).into(),
-            None => term::format::primary(term::format::node(self.nid))
+            None if self.you => term::format::primary(term::format::node(self.nid))
                 .dim()
                 .into(),
+            None => term::Label::blank(),
         };
-        if let Some(you) = self.you() {
-            (alias, you)
-        } else {
-            (
-                alias,
-                term::format::primary(term::format::node(self.nid))
-                    .dim()
-                    .into(),
-            )
-        }
+        let author = self.you().unwrap_or_else(|| {
+            term::format::primary(term::format::node(self.nid))
+                .dim()
+                .into()
+        });
+        (alias, author)
     }
 
     pub fn line(self) -> Line {
-        let (first, second) = self.labels();
-        Line::spaced([first, second])
+        let (alias, author) = self.labels();
+        Line::spaced([alias, author])
     }
 }
 

radicle-term/src/element.rs

@@ -186,6 +186,10 @@ impl Line {
     pub fn spaced(items: impl IntoIterator<Item = Label>) -> Self {
         let mut line = Self::default();
         for item in items.into_iter() {
+            // Don't create spaces around empty labels.
+            if item.is_blank() {
+                continue;
+            }
             line.push(item);
             line.push(Label::space());
         }

radicle-term/src/label.rs

@@ -17,6 +17,11 @@ impl Label {
         Self(Paint::default())
     }
 
+    /// Is this label empty.
+    pub fn is_blank(&self) -> bool {
+        self.content().is_empty()
+    }
+
     /// Get unstyled content.
     pub fn content(&self) -> &str {
         self.0.content()