{-# LANGUAGE DeriveGeneric        #-}
{-# LANGUAGE OverloadedStrings    #-}
{-# LANGUAGE TemplateHaskell      #-}
{-# OPTIONS_GHC -fno-warn-orphans #-}

module Model.Frequency () where

import Database.SQLite.Simple (SQLData(SQLText))
import Database.SQLite.Simple.FromField (fieldData, FromField(fromField))
import Database.SQLite.Simple.Ok (Ok(Ok, Errors))
import Database.SQLite.Simple.ToField (ToField(toField))
import qualified Data.Text as T

import Common.Model (Frequency)

instance FromField Frequency where
  fromField field = case fieldData field of
    SQLText text -> Ok (read (T.unpack text) :: Frequency)
    _ -> Errors [error "SQLText field required for frequency"]

instance ToField Frequency where
  toField frequency = SQLText . T.pack . show $ frequency