Provide nix build

1 files changed, 30 insertions, 0 deletions

diff --git a/todo/model/difficulty.py b/todo/model/difficulty.py
new file mode 100644
index 0000000..526cdb9
--- /dev/null
+++ b/todo/model/difficulty.py
@@ -0,0 +1,30 @@
+from enum import IntEnum
+from typing import Optional
+
+class Difficulty(IntEnum):
+    EASY = 0
+    NORMAL = 1
+    HARD = 2
+
+values = [
+    Difficulty.EASY,
+    Difficulty.NORMAL,
+    Difficulty.HARD]
+
+def format(difficulty: Difficulty) -> str:
+    if difficulty == Difficulty.EASY:
+        return "Easy"
+    elif difficulty == Difficulty.NORMAL:
+        return "Normal"
+    elif difficulty == Difficulty.HARD:
+        return "Hard"
+
+def parse(string: str) -> Optional[Difficulty]:
+    if string == "Easy":
+        return Difficulty.EASY
+    elif string == "Normal":
+        return Difficulty.NORMAL
+    elif string == "Hard":
+        return Difficulty.HARD
+    else:
+        return None