src/config/mod.rs

@@ -1,7 +1,22 @@
 pub const APP_NAME: &str = "sender";
 
-pub fn get_paths(args: Vec<String>) -> (String, String, String) {
-    (args[1].clone(), args[2].clone(), args[3].clone())
+pub fn get_paths(args: Vec<String>) -> Result<(String, String), std::io::Error> {
+    if args.len() < 2 {
+        Err(std::io::Error::other("Not enough arguments"))
+    } else {
+        let numbers_path = args[1].clone();
+        let message_path = args[2].clone();
+        if !path_exists(&numbers_path) && !path_exists(&message_path) {
+            Err(std::io::Error::other("Paths do not exists"))
+        } else {
+            Ok((numbers_path, message_path))
+        }
+    }
+}
+
+fn path_exists(path: &str) -> bool {
+    let file = std::path::Path::new(path);
+    file.exists()
 }
 
 pub async fn parse_config() -> (textsender_models::config::auxiliary::TwilioConfig, bool) {