Add cadence values to the matchy tasks

cadence - Run this task every "x" weeks
cadence - Unix seconds timestamp for the start of this cadence

matchy/state.py

@@ -16,7 +16,7 @@ logger = logging.getLogger("state")
 logger.setLevel(logging.INFO)
 
 # Warning: Changing any of the below needs proper thought to ensure backwards compatibility
-_VERSION = 4
+_VERSION = 5
 
 
 def _migrate_to_v1(d: dict):
@@ -64,12 +64,24 @@ def _migrate_to_v4(d: dict):
     del d[_Key._HISTORY]
 
 
+def _migrate_to_v5(d: dict):
+    """v5 added weekly cadence"""
+    tasks = d.get(_Key.TASKS, {})
+    for tasks in tasks.values():
+        match_tasks = tasks.get(_Key.MATCH_TASKS, [])
+        for match in match_tasks:
+            # All previous matches were every week starting from now
+            match[_Key.CADENCE] = 1
+            match[_Key.CADENCE_START] = int(datetime.now().timestamp())
+
+
 # Set of migration functions to apply
 _MIGRATIONS = [
     _migrate_to_v1,
     _migrate_to_v2,
     _migrate_to_v3,
     _migrate_to_v4,
+    _migrate_to_v5
 ]
 
 
@@ -94,6 +106,8 @@ class _Key(str):
     MEMBERS_MIN = "members_min"
     WEEKDAY = "weekdays"
     HOUR = "hours"
+    CADENCE = "cadence"
+    CADENCE_START = "CADENCE_START"
 
     # Unused
     _MATCHEES = "matchees"
@@ -139,6 +153,8 @@ _SCHEMA = Schema(
                         _Key.MEMBERS_MIN: Use(int),
                         _Key.WEEKDAY: Use(int),
                         _Key.HOUR: Use(int),
+                        _Key.CADENCE: Use(int),
+                        _Key.CADENCE_START: Use(int),
                     }
                 ]
             }