Add module.

bot/modules/todo/data.py

@@ -0,0 +1,37 @@
+from data import RowTable, Table
+
+tasklist = RowTable(
+    'tasklist',
+    ('taskid', 'guildid', 'userid', 'content', 'complete', 'rewarded', 'created_at', 'last_updated_at'),
+    'taskid'
+)
+
+
+@tasklist.save_query
+def expire_old_tasks():
+    with tasklist.conn:
+        with tasklist.conn.cursor() as curs:
+            curs.execute(
+                "DELETE FROM tasklist WHERE "
+                "last_updated_at < timezone('utc', NOW()) - INTERVAL '7d' "
+                "RETURNING *"
+            )
+            return curs.fetchall()
+
+
+tasklist_channels = Table('tasklist_channels')
+
+tasklist_rewards = Table('tasklist_reward_history')
+
+
+@tasklist_rewards.save_query
+def count_recent_for(guildid, userid, interval='24h'):
+    with tasklist_rewards.conn:
+        with tasklist_rewards.conn.cursor() as curs:
+            curs.execute(
+                "SELECT SUM(reward_count) FROM tasklist_reward_history "
+                "WHERE "
+                "guildid = {} AND userid = {}"
+                "AND reward_time > timezone('utc', NOW()) - INTERVAL '{}'".format(guildid, userid, interval)
+            )
+            return curs.fetchone()[0] or 0