From 6d4fa873537c28e36e88a991ddf4a965a8548c58 Mon Sep 17 00:00:00 2001
From: Compey <hi@devcomp.xyz>
Date: Mon, 7 Aug 2023 12:37:20 +0530
Subject: [PATCH] feat: save history to file

---
 src/cli/repl.rs | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/src/cli/repl.rs b/src/cli/repl.rs
index 4c340ce..49ccc10 100644
--- a/src/cli/repl.rs
+++ b/src/cli/repl.rs
@@ -1,17 +1,18 @@
 use std::{
-    io::{Error, ErrorKind},
+    io::ErrorKind,
     path::PathBuf,
     process::{exit, ExitCode},
 };
 
+use anyhow::Error;
 use clap::Command;
 use lune::{Lune, LuneError};
-use rustyline::{error::ReadlineError, DefaultEditor};
+use rustyline::{error::ReadlineError, history::FileHistory, DefaultEditor, Editor};
 
 use super::Cli;
 
 // Isn't dependency injection plain awesome?!
-pub async fn show_interface(cmd: Command) -> Result<ExitCode, anyhow::Error> {
+pub async fn show_interface(cmd: Command) -> Result<ExitCode, Error> {
     let lune_version = cmd.get_version();
 
     // The version is mandatory and will always exist
@@ -77,10 +78,14 @@ pub async fn show_interface(cmd: Command) -> Result<ExitCode, anyhow::Error> {
                     // Increment the counter
                     interrupt_counter += 1;
                 } else {
+                    save_repl_activity(repl)?;
                     break;
                 }
             }
-            Err(ReadlineError::Eof) => break,
+            Err(ReadlineError::Eof) => {
+                save_repl_activity(repl)?;
+                break;
+            }
             Err(err) => {
                 eprintln!("REPL ERROR: {}", err.to_string());
 
@@ -99,3 +104,11 @@ pub async fn show_interface(cmd: Command) -> Result<ExitCode, anyhow::Error> {
 
     Ok(ExitCode::SUCCESS)
 }
+
+fn save_repl_activity(mut repl: Editor<(), FileHistory>) -> Result<(), Error> {
+    // Once again, we know that the specified home directory
+    // and history file already exist
+    repl.save_history(&home::home_dir().unwrap().join(".lune_history"))?;
+
+    Ok(())
+}