feat! store and show timestamp for each backup generation

This changes the output format of "obnam list".

1 files changed, 4 insertions, 2 deletions

diff --git a/src/cmd/list.rs b/src/cmd/list.rs
index 6c48244..70aa0a7 100644
--- a/src/cmd/list.rs
+++ b/src/cmd/list.rs
@@ -3,8 +3,10 @@ use crate::client::{BackupClient, ClientConfig};
 pub fn list(config: &ClientConfig) -> anyhow::Result<()> {
     let client = BackupClient::new(&config.server_url)?;
 
-    for gen_id in client.list_generations()? {
-        println!("{}", gen_id);
+    let mut generations = client.list_generations()?;
+    generations.sort_by_cached_key(|gen| gen.ended().to_string());
+    for finished in generations {
+        println!("{} {}", finished.id(), finished.ended());
     }
 
     Ok(())