{-# LANGUAGE DeriveAnyClass #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE OverloadedStrings #-}

module SpaceTraders.APIClient.Systems
  ( listSystems
  ) where

import Control.Exception
import Network.HTTP.Simple

import SpaceTraders
import SpaceTraders.APIClient.Client
import SpaceTraders.APIClient.Pagination
import SpaceTraders.Database.Systems
import SpaceTraders.Model.System(System)

listSystems :: SpaceTradersT (APIResponse [System])
listSystems = do
  s <- getSystems
  listSystems' Pagination{limit=20, page=((length s) `div` 20) + 1, total=0}
  where
    listSystems' :: Pagination -> SpaceTradersT (APIResponse [System])
    listSystems' p = do
      resp <- sendPaginated (Just p) $ setRequestPath "/v2/systems"
      case resp of
        Left e -> throw e
        Right (APIMessage [] _) -> Right <$> getSystems
        Right (APIMessage r (Just p')) -> do
          addSystems r
          listSystems' (nextPage p')
        _ -> undefined