rewrite: Tasklist module.

bot/modules/tasklist/data.py

@@ -0,0 +1,45 @@
+from psycopg import sql
+
+from data import RowModel, Registry, Table
+from data.columns import Integer, String, Timestamp, Bool
+
+
+class TasklistData(Registry):
+    class Task(RowModel):
+        """
+        Row model describing a single task in a tasklist.
+
+        Schema
+        ------
+        CREATE TABLE tasklist(
+          taskid SERIAL PRIMARY KEY,
+          userid BIGINT NOT NULL REFERENCES user_config ON DELETE CASCADE,
+          parentid INTEGER REFERENCES tasklist (taskid) ON DELETE SET NULL,
+          content TEXT NOT NULL,
+          rewarded BOOL DEFAULT FALSE,
+          deleted_at TIMESTAMPTZ,
+          completed_at TIMESTAMPTZ,
+          created_at TIMESTAMPTZ,
+          last_updated_at TIMESTAMPTZ
+        );
+        CREATE INDEX tasklist_users ON tasklist (userid);
+
+        CREATE TABLE tasklist_channels(
+          guildid BIGINT NOT NULL REFERENCES guild_config (guildid) ON DELETE CASCADE,
+          channelid BIGINT NOT NULL
+        );
+        CREATE INDEX tasklist_channels_guilds ON tasklist_channels (guildid);
+        """
+        _tablename_ = "tasklist"
+
+        taskid = Integer(primary=True)
+        userid = Integer()
+        parentid = Integer()
+        rewarded = Bool()
+        content = String()
+        completed_at = Timestamp()
+        created_at = Timestamp()
+        deleted_at = Timestamp()
+        last_updated_at = Timestamp()
+
+    channels = Table('tasklist_channels')