3 files changed, 25 insertions, 14 deletions
diff --git a/modules/ships.py b/modules/ships.py
index e35cdd2..05ce6c1 100644
--- a/modules/ships.py
+++ b/modules/ships.py
@@ -1,6 +1,6 @@
 from typing import Dict
 
-from . import task_type
+from . import task_types
 from .database import cursor, conn
 
 
@@ -20,10 +20,10 @@ class Ship:
         row = cursor.fetchone()
         if row is None:
             cursor.execute("INSERT INTO ships (symbol, task, params, name) VALUES (?, ?, ?, ?)",
-                           (self.symbol, task_type.IDLE, None, self.symbol))
+                           (self.symbol, task_types.IDLE, None, self.symbol))
             conn.commit()
 
-            self.task = task_type.IDLE
+            self.task = task_types.IDLE
             self.task = self.symbol
         else:
             self.name = row[0]
@@ -31,7 +31,7 @@ class Ship:
 
     def set_task(self, task):
         self.task = task
-        if task != task_type.ERROR:
+        if task != task_types.ERROR:
             cursor.execute("UPDATE ships SET task = ? WHERE symbol = ?", (task, self.symbol))
             conn.commit()
 
diff --git a/modules/task_type.py b/modules/task_type.py
deleted file mode 100644
index 7579ad0..0000000
--- a/modules/task_type.py
+++ /dev/null
@@ -1,10 +0,0 @@
-IDLE = 'IDLE'
-MINING = 'MINING'
-
-MIA = 'MIA'
-ERROR = 'ERROR'
-
-task_types = [
-    IDLE,
-    MINING,
-]
diff --git a/modules/task_types.py b/modules/task_types.py
new file mode 100644
index 0000000..d23ce55
--- /dev/null
+++ b/modules/task_types.py
@@ -0,0 +1,21 @@
+from typing import Annotated
+from pydantic.functional_validators import AfterValidator
+
+IDLE = 'IDLE'
+MINING = 'MINING'
+
+MIA = 'MIA'
+ERROR = 'ERROR'
+
+task_types = [
+    IDLE,
+    MINING,
+]
+
+
+def is_task_type(task: str):
+    assert task in task_types, f"'{task}' is not a valid task type."
+    return task
+
+
+task_type = Annotated[str, AfterValidator(is_task_type)]