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

module SpaceTraders.APIClient.Ships
  ( dock
  , myShips
  , orbit
  ) where

import Data.Aeson.Types
import qualified Data.Text.Encoding as T
import GHC.Generics
import Network.HTTP.Simple

import SpaceTraders
import SpaceTraders.APIClient.Client
import SpaceTraders.APIClient.Pagination
import SpaceTraders.Database.Ships
import SpaceTraders.Model.Nav
import SpaceTraders.Model.Ship

data NavMessage = NavMessage { nav :: Nav } deriving (FromJSON, Generic, Show)
dock :: Ship -> SpaceTradersT (APIResponse Ship)
dock ship = do
  resp <- send $ setRequestPath (T.encodeUtf8 $ mconcat ["/v2/my/ships/", symbol ship, "/dock"])
               . setRequestMethod "POST" :: SpaceTradersT (APIResponse NavMessage)
  case resp of
    Left e -> return $ Left e
    Right (NavMessage n) -> do
      let s = ship{SpaceTraders.Model.Ship.nav=n}
      updateShip s
      return $ Right s

myShips :: SpaceTradersT (APIResponse [Ship])
myShips = do
  listShips' Pagination{limit=20, page=1, total=0}
  where
    listShips' :: Pagination -> SpaceTradersT (APIResponse [Ship])
    listShips' p = do
      resp <- sendPaginated (Just p) $ setRequestPath "/v2/my/ships" :: SpaceTradersT (APIPaginatedResponse [Ship])
      case resp of
        Left e -> return $ Left e
        Right (APIMessage r (Just p')) -> do
          mapM_ setShip r
          if (limit p' * page p' < total p') then listShips' (nextPage p')
                                             else Right <$> getShips
        _ -> undefined

orbit :: Ship -> SpaceTradersT (APIResponse Ship)
orbit ship = do
  resp <- send $ setRequestPath (T.encodeUtf8 $ mconcat ["/v2/my/ships/", symbol ship, "/orbit"])
               . setRequestMethod "POST" :: SpaceTradersT (APIResponse NavMessage)
  case resp of
    Left e -> return $ Left e
    Right (NavMessage n) -> do
      let s = ship{SpaceTraders.Model.Ship.nav=n}
      updateShip s
      return $ Right s