{-# LANGUAGE OverloadedStrings #-}
module Types(CArray, Page(..), Application(..), RhapsodeCSS, buildDirFile, readStrict) where

import System.Directory (getCurrentDirectory) -- default referer URI
import SpeechStyle (SpeechStyle)
import Data.CSS.Preprocessor.Conditions (ConditionalStyles, conditionalStyles)
import Data.CSS.Preprocessor.Text (TextStyle)
import Text.XML
import qualified Data.Map.Strict as M
import Network.URI
import Network.URI.Fetch (Application(..), url)
import Network.URI.Fetch.XML (Page(..), loadVisited, readStrict)

-- For the in-memory history log
import qualified Data.Set as Set
import Data.Set (Set)
import Data.Text (Text(..))
import qualified Data.Text as Txt
import System.Directory
import System.FilePath ((</>))
import Control.Parallel (par)

import Foreign.Ptr
import Foreign.StablePtr

buildDir = "."
buildDirFile = (buildDir </>)

type CArray a = Ptr a
type RhapsodeCSS = ConditionalStyles (TextStyle SpeechStyle)

foreign export ccall c_initialReferer :: IO (StablePtr (Page RhapsodeCSS))

c_initialReferer = do
    cwd <- getCurrentDirectory
    hist <- loadVisited "rhapsode"
    newStablePtr $ Page {
        -- Default to URIs being relative to CWD.
        pageURL = URI {uriScheme = "file:", uriPath = cwd,
            uriAuthority = Nothing, uriQuery = "", uriFragment = ""},
        -- Blank values:
        css = conditionalStyles nullURI "temp",
        domain = "temp",
        html = Document {
            documentPrologue = Prologue [] Nothing [],
            documentRoot = Element "temp" M.empty [],
            documentEpilogue = []
        },
        pageTitle = "", pageMIME = "", apps = [],
        backStack = [], forwardStack = [], visitedURLs = hist,
        initCSS = conditionalStyles,
        appName = "rhapsode"
    }

foreign export ccall c_freePage :: StablePtr (Page RhapsodeCSS) -> IO ()

c_freePage = freeStablePtr