Add event type handling for duties in the system

- Introduced a new `event_type` column in the `duties` table to categorize duties as 'duty', 'unavailable', or 'vacation'.
- Updated the duty schedule import functionality to parse and store event types from the JSON input.
- Enhanced the API response to include event types for each duty, improving the calendar display logic.
- Modified the web application to visually differentiate between duty types in the calendar and duty list.
- Updated tests to cover new event type functionality and ensure correct parsing and storage of duties.
- Revised README documentation to reflect changes in duty event types and their representation in the system.

tests/test_duty_schedule_parser.py

@@ -6,7 +6,10 @@ import pytest
 
 from importers.duty_schedule import (
     DUTY_MARKERS,
+    UNAVAILABLE_MARKER,
+    VACATION_MARKER,
     DutyScheduleParseError,
+    DutyScheduleEntry,
     parse_duty_schedule,
 )
 
@@ -24,16 +27,19 @@ def test_parse_valid_schedule():
     # Petrov has 7 cells -> end = start + 6
     assert result.end_date == date(2026, 2, 22)
     assert len(result.entries) == 2
-    names = [e[0] for e in result.entries]
-    assert "Ivanov I.I." in names
-    assert "Petrov P.P." in names
-    by_name = {e[0]: e[1] for e in result.entries}
-    # Ivanov: indices 2, 3, 4 are duty (б, Б, в) -> 2026-02-18, 19, 20
-    ivan_dates = sorted(by_name["Ivanov I.I."])
-    assert ivan_dates == [date(2026, 2, 18), date(2026, 2, 19), date(2026, 2, 20)]
-    # Petrov: indices 1, 2 (Н, О) -> 2026-02-17, 18
-    petr_dates = sorted(by_name["Petrov P.P."])
-    assert petr_dates == [date(2026, 2, 17), date(2026, 2, 18)]
+    by_name = {e.full_name: e for e in result.entries}
+    assert "Ivanov I.I." in by_name
+    assert "Petrov P.P." in by_name
+    # Ivanov: only duty (б, Б, в) -> 2026-02-18, 19, 20
+    ivan = by_name["Ivanov I.I."]
+    assert sorted(ivan.duty_dates) == [date(2026, 2, 18), date(2026, 2, 19), date(2026, 2, 20)]
+    assert ivan.unavailable_dates == []
+    assert ivan.vacation_dates == []
+    # Petrov: one Н (unavailable), one О (vacation) -> 2026-02-17, 18
+    petr = by_name["Petrov P.P."]
+    assert petr.duty_dates == []
+    assert petr.unavailable_dates == [date(2026, 2, 17)]
+    assert petr.vacation_dates == [date(2026, 2, 18)]
 
 
 def test_parse_empty_duty_string():
@@ -41,7 +47,11 @@ def test_parse_empty_duty_string():
     result = parse_duty_schedule(raw)
     assert result.start_date == date(2026, 2, 1)
     assert result.end_date == date(2026, 2, 1)
-    assert result.entries == [("A", [])]
+    assert len(result.entries) == 1
+    assert result.entries[0].full_name == "A"
+    assert result.entries[0].duty_dates == []
+    assert result.entries[0].unavailable_dates == []
+    assert result.entries[0].vacation_dates == []
 
 
 def test_parse_invalid_json():
@@ -89,4 +99,19 @@ def test_parse_schedule_item_empty_name():
 
 
 def test_duty_markers():
-    assert "б" in DUTY_MARKERS and "Б" in DUTY_MARKERS and "в" in DUTY_MARKERS
+    assert DUTY_MARKERS == frozenset({"б", "Б", "в", "В"})
+    assert "Н" not in DUTY_MARKERS and "О" not in DUTY_MARKERS
+
+
+def test_unavailable_and_vacation_markers():
+    assert UNAVAILABLE_MARKER == "Н"
+    assert VACATION_MARKER == "О"
+    raw = (
+        '{"meta": {"start_date": "2026-02-01"}, "schedule": ['
+        '{"name": "X", "duty": "\u041d; \u041e; \u0432"}]}'
+    ).encode("utf-8")
+    result = parse_duty_schedule(raw)
+    entry = result.entries[0]
+    assert entry.unavailable_dates == [date(2026, 2, 1)]
+    assert entry.vacation_dates == [date(2026, 2, 2)]
+    assert entry.duty_dates == [date(2026, 2, 3)]