Add input_with_editor function for text editing

This function opens the system editor with default text in a cache file,
reads back the modified content after editing, and removes comment
lines.

1 files changed, 53 insertions, 0 deletions

diff --git a/src/utils/input.rs b/src/utils/input.rs
index 217cede..a728c77 100644
--- a/src/utils/input.rs
+++ b/src/utils/input.rs
@@ -1,3 +1,5 @@
+use tokio::{fs, process::Command};
+
 /// Confirm the current operation
 /// Waits for user input of 'y' or 'n'
 pub async fn confirm_hint(text: impl Into<String>) -> bool {
@@ -50,3 +52,54 @@ where
     }
     confirmed
 }
+
+/// Input text using the system editor
+/// Opens the system editor (from EDITOR environment variable) with default text in a cache file,
+/// then reads back the modified content after the editor closes, removing comment lines
+pub async fn input_with_editor(
+    default_text: impl AsRef<str>,
+    cache_file: impl AsRef<std::path::Path>,
+    comment_char: impl AsRef<str>,
+) -> Result<String, std::io::Error> {
+    let cache_path = cache_file.as_ref();
+    let default_content = default_text.as_ref();
+    let comment_prefix = comment_char.as_ref();
+
+    // Write default text to cache file
+    fs::write(cache_path, default_content).await?;
+
+    // Get editor from environment variable
+    let editor = std::env::var("EDITOR").unwrap_or_else(|_| "vi".to_string());
+
+    // Open editor with cache file
+    let status = Command::new(editor).arg(cache_path).status().await?;
+
+    if !status.success() {
+        return Err(std::io::Error::new(
+            std::io::ErrorKind::Other,
+            "Editor exited with non-zero status",
+        ));
+    }
+
+    // Read the modified content
+    let content = fs::read_to_string(cache_path).await?;
+
+    // Remove comment lines and trim
+    let processed_content: String = content
+        .lines()
+        .filter_map(|line| {
+            let trimmed = line.trim();
+            if trimmed.starts_with(comment_prefix) {
+                None
+            } else {
+                Some(line)
+            }
+        })
+        .collect::<Vec<&str>>()
+        .join("\n");
+
+    // Delete the cache file
+    let _ = fs::remove_file(cache_path).await;
+
+    Ok(processed_content)
+}