refactor: Add 'AppError' to allow cleaner propagation of different errors

src/error.rs

@@ -0,0 +1,34 @@
+#[derive(Debug, PartialEq)]
+pub enum AppError {
+    CommandFailedToExecute(String),
+    CommandError(String),
+    MissingGitRepository(String),
+    MissingGitRemote(String),
+    InvalidGitUrl(String),
+    InvalidUtf8(String),
+}
+
+impl From<std::io::Error> for AppError {
+    fn from(error: std::io::Error) -> Self {
+        AppError::CommandFailedToExecute(error.to_string())
+    }
+}
+
+impl From<std::str::Utf8Error> for AppError {
+    fn from(error: std::str::Utf8Error) -> Self {
+        AppError::InvalidUtf8(error.to_string())
+    }
+}
+
+impl AppError {
+    pub fn print(&self) -> &String {
+        match self {
+            AppError::CommandFailedToExecute(str)
+            | AppError::MissingGitRepository(str)
+            | AppError::MissingGitRemote(str)
+            | AppError::CommandError(str)
+            | AppError::InvalidGitUrl(str)
+            | AppError::InvalidUtf8(str) => str,
+        }
+    }
+}