feat: add initial support for positioning

Signed-off-by: Konstantin Fickel <mail@konstantinfickel.de>

test/localize/test_extract_datetime.py

@@ -0,0 +1,32 @@
+from datetime import datetime
+from src.streamer.localize.extract_datetime import extract_date_from_file_name
+
+
+class TestExtractDateTime:
+    def test_extract_date_from_file_name_valid(self):
+        file_name = "20230101-123456 Some Text.md"
+        assert datetime(2023, 1, 1, 12, 34, 56) == extract_date_from_file_name(
+            file_name
+        )
+
+    def test_extract_date_from_file_name_invalid(self):
+        file_name = "invalid-file-name.md"
+        assert extract_date_from_file_name(file_name) is None
+
+    def test_extract_date_from_file_name_without_time(self):
+        file_name = "20230101 Some Text.md"
+        assert datetime(2023, 1, 1, 0, 0, 0) == extract_date_from_file_name(file_name)
+
+    def test_extract_date_from_file_name_short_time(self):
+        file_name = "20230101-1234 Some Text.md"
+        assert datetime(2023, 1, 1, 12, 34, 0) == extract_date_from_file_name(file_name)
+
+    def test_extract_date_from_file_name_empty_string(self):
+        file_name = ""
+        assert extract_date_from_file_name(file_name) is None
+
+    def test_extract_date_from_file_name_with_full_path(self):
+        file_name = "/path/to/20230101-123456 Some Text.md"
+        assert datetime(2023, 1, 1, 12, 34, 56) == extract_date_from_file_name(
+            file_name
+        )