module HobTest.Context.Stubbed (
        loadStubbedContext,
        stubbedFileLoader,
        failingFileWriter
        ) where

import Control.Monad.Error (throwError)
import Data.Text           (pack)
import Data.Tree

import qualified Hob.Context              as HC
import qualified Hob.Context.FileContext  as HFC
import qualified Hob.Context.StyleContext as HSC

import Hob.DirectoryTree
import Hob.Ui

fileTreeStub :: IO (Forest DirectoryTreeElement)
fileTreeStub = return [
    Node (DirectoryTreeElement "a" "/xxx/a" True) [
        Node (DirectoryTreeElement "b" "/xxx/a/b" False) []],
    Node (DirectoryTreeElement "a.b" "/xxx/a.b" False) [],
    Node (DirectoryTreeElement "c" "/xxx/c" False) [],
    Node (DirectoryTreeElement "-" "/xxx/cannotRead" False) []]

failingFileWriter :: HFC.FileWriter
failingFileWriter _ _ = throwError $ userError "cannot write files stub"

stubbedFileLoader :: HFC.FileLoader
stubbedFileLoader "/xxx/c" = return $ Just $ pack "file contents for /xxx/c"
stubbedFileLoader "/xxx/a/b" = return $ Just $ pack "file contents for /xxx/a/b"
stubbedFileLoader "/xxx/a.b" = return $ Just $ pack "file contents for /xxx/a.b"
stubbedFileLoader "/xxx/cannotRead" = return Nothing
stubbedFileLoader "/xxx/testName.hs" = return $ Just $ pack "file contents for /xxx/testName.hs"
stubbedFileLoader path = throwError $ userError $ "cannot open unknown file: "++path

loadStubbedContext :: IO HC.Context
loadStubbedContext = do
    sc <- HSC.defaultStyleContext "app-data"
    fc <- HFC.defaultFileContext stubbedFileLoader failingFileWriter fileTreeStub
    loadGui fc sc