Add User Confirmation Before Overwriting Files

- Implement a check to see if the target file already exists
- Prompt the user to confirm if they want to overwrite the existing file
- Exit the script if the user opts not to overwrite

This change improves the user experience by providing a safety measure to prevent accidental file overwriting.

cocopilot.sh

@@ -9,6 +9,19 @@ else
 fi
 
 COPILOT_DIR="$CONFIG_DIR/github-copilot"
+
+# Check if the target file already exists
+TARGET_FILE="$COPILOT_DIR/hosts.json"
+
+if [ -f "$TARGET_FILE" ]; then
+  read -p "The file $TARGET_FILE already exists. Do you want to overwrite it? [y/N] " -r
+  if [[ ! $REPLY =~ ^[Yy]$ ]]; then
+    echo "Operation cancelled."
+    exit 1
+  fi
+fi
+
+# Create directory
 if [ ! -d "$COPILOT_DIR" ]; then
   mkdir -p "$COPILOT_DIR"
 fi