feat: professionalize control plane and standalone delivery

tests/test_task_engine.py

@@ -0,0 +1,70 @@
+from __future__ import annotations
+
+import unittest
+from types import SimpleNamespace
+
+from biliup_next.app.task_engine import infer_error_step_name, next_runnable_step
+from biliup_next.core.models import TaskStep
+
+
+class TaskEngineTests(unittest.TestCase):
+    def test_infer_error_step_name_prefers_running_step(self) -> None:
+        task = SimpleNamespace(status="running")
+        steps = {
+            "transcribe": TaskStep(None, "task-1", "transcribe", "running", None, None, 0, None, None),
+            "song_detect": TaskStep(None, "task-1", "song_detect", "pending", None, None, 0, None, None),
+        }
+
+        self.assertEqual(infer_error_step_name(task, steps), "transcribe")
+
+    def test_next_runnable_step_returns_none_while_a_step_is_running(self) -> None:
+        task = SimpleNamespace(id="task-1", status="running")
+        steps = {
+            "transcribe": TaskStep(None, "task-1", "transcribe", "running", None, None, 0, None, None),
+            "song_detect": TaskStep(None, "task-1", "song_detect", "pending", None, None, 0, None, None),
+        }
+        state = {
+            "settings": {
+                "comment": {"enabled": True},
+                "collection": {"enabled": True},
+                "paths": {},
+                "publish": {},
+            }
+        }
+
+        self.assertEqual(next_runnable_step(task, steps, state), (None, None))
+
+    def test_next_runnable_step_returns_wait_payload_for_retryable_publish(self) -> None:
+        task = SimpleNamespace(id="task-1", status="failed_retryable")
+        steps = {
+            "publish": TaskStep(
+                None,
+                "task-1",
+                "publish",
+                "failed_retryable",
+                "PUBLISH_UPLOAD_FAILED",
+                "upload failed",
+                1,
+                None,
+                "2099-01-01T00:00:00+00:00",
+            )
+        }
+        state = {
+            "settings": {
+                "comment": {"enabled": True},
+                "collection": {"enabled": True},
+                "paths": {},
+                "publish": {"retry_schedule_minutes": [10]},
+            }
+        }
+
+        step_name, waiting_payload = next_runnable_step(task, steps, state)
+
+        self.assertIsNone(step_name)
+        self.assertIsNotNone(waiting_payload)
+        self.assertTrue(waiting_payload["waiting_for_retry"])
+        self.assertEqual(waiting_payload["step"], "publish")
+
+
+if __name__ == "__main__":
+    unittest.main()