Add repo list command

gdn-cli/src/commands/repo.rs

@@ -1,4 +1,5 @@
 mod add;
+mod list;
 mod remove;
 mod show;
 
@@ -9,6 +10,7 @@ use crate::Environment;
 /// Perform repo operations.
 #[derive(Debug, Parser)]
 pub enum Command {
+    List(list::Command),
     Show(show::Command),
     Add(add::Command),
     Remove(remove::Command),
@@ -17,6 +19,7 @@ pub enum Command {
 impl Command {
     pub fn run(self, env: &Environment) -> anyhow::Result<()> {
         match self {
+            Self::List(command) => command.run(env),
             Self::Show(command) => command.run(env),
             Self::Add(command) => command.run(env),
             Self::Remove(command) => command.run(env),

gdn-cli/src/commands/repo/list.rs

@@ -0,0 +1,32 @@
+use clap::Parser;
+
+use crate::Environment;
+
+/// List all repositories.
+#[derive(Debug, Parser)]
+pub struct Command {}
+
+impl Command {
+    pub fn run(self, env: &Environment) -> anyhow::Result<()> {
+        let data = gdn::data::open(env.data_dir.clone())?;
+        let state = gdn::data::load_state(&data)?;
+
+        let mut repos = state
+            .repos
+            .into_iter()
+            .map(|(id, name)| (name, id))
+            .collect::<Vec<_>>();
+        repos.sort_unstable();
+
+        if repos.is_empty() {
+            println!("No repos");
+        } else {
+            println!("Repos: {}", repos.len());
+            for (name, id) in repos {
+                println!("- {name} ({id })")
+            }
+        }
+
+        Ok(())
+    }
+}