Adding a persistent command history

crates/shell/src/main.rs

@@ -1,3 +1,4 @@
+use std::path::Path;
 use std::path::PathBuf;
 
 use anyhow::Context;
@@ -42,6 +43,14 @@ async fn interactive() -> anyhow::Result<()> {
     let mut state = init_state();
 
     let home = dirs::home_dir().context("Couldn't get home directory")?;
+    let history_file: PathBuf = [home.as_path(), Path::new(".shell_history")]
+        .iter()
+        .collect();
+    if Path::new(history_file.as_path()).exists() {
+        let _ = rl
+            .load_history(history_file.as_path())
+            .context("Failed to read the command history");
+    }
 
     let mut _prev_exit_code = 0;
     loop {
@@ -117,6 +126,9 @@ async fn interactive() -> anyhow::Result<()> {
             }
         }
     }
+    let _ = rl
+        .save_history(history_file.as_path())
+        .context("Failed to write the command history");
 
     Ok(())
 }