module DialogueTree where

import           Text.Blaze.Html.Renderer.String
import           Text.Blaze.Html5

data DTree
     = T Html
     | O Html [(Html, DTree)]

ht :: (ToMarkup a) => a -> Html
ht = preEscapedToHtml

normalizeOption :: (Html, DTree) -> Html
normalizeOption (h, t) =
     details . ht $
          [summary h, normalize t]

normalize :: DTree -> Html
normalize (T s)               = s
normalize (O response things) =
     details . ht $
          summary response
          : (normalizeOption <$> things)

render :: DTree -> String
render = renderHtml . normalize

put :: DTree -> IO ()
put = putStrLn . render