from data import Registry, RowModel
from data.columns import String, Timestamp, Integer


class Koan(RowModel):
    """
    Schema
    ======
    CREATE TABLE koans(
      koanid INTEGER GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
      communityid INTEGER NOT NULL REFERENCES communities ON UPDATE CASCADE ON DELETE CASCADE,
      name TEXT NOT NULL,
      message TEXT NOT NULL,
      created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
      _timestamp TIMESTAMPTZ NOT NULL DEFAULT NOW()
    );
    """
    _tablename_ = 'koans'
    _cache_ = {}

    koanid = Integer(primary=True)
    communityid = Integer()
    name = String()
    message = String()
    created_at = Timestamp()
    _timestamp = Timestamp()


class KoanData(Registry):
    VERSION = ('KOANS', 1)

    koans = Koan.table