ai.fivesixteensvgapi.hs

{- |
I can modify the code to use Haskell instead of Python. Haskell is a purely functional programming language that supports lazy evaluation, 
type inference, and higher-order functions To use Haskell in a browser, I will need to use a tool that can compile Haskell code to JavaScript, 
such as GHCJS or Haste. These tools allow me to write Haskell code that can interact with the browser’s APIs, such as DOM, CSS, and XML HTTP Request. 
Here is the modified code in Haskell, using GHCJS and the ghcjs-dom library: -}

{-# LANGUAGE OverloadedStrings #-}

import Control.Monad (forM_, when)
import Data.Maybe (fromJust)
import Data.Text (Text, pack, unpack)
import GHCJS.DOM (currentDocument)
import GHCJS.DOM.Document (getBody, createElement, getElementById)
import GHCJS.DOM.Element (setInnerHTML)
import GHCJS.DOM.HTMLButtonElement (castToHTMLButtonElement)
import GHCJS.DOM.HTMLInputElement (castToHTMLInputElement, getValue, setValue)
import GHCJS.DOM.HTMLElement (setInnerText)
import GHCJS.DOM.Node (appendChild, getParentNode)
import GHCJS.DOM.Types (HTMLButtonElement, HTMLInputElement, HTMLDivElement, castToHTMLDivElement)
import System.Directory (doesDirectoryExist, listDirectory)
import System.FilePath ((</>))

-- A function to create a button with a label and an onclick handler
createButton :: Text -> IO () -> IO HTMLButtonElement
createButton label handler = do
  Just doc <- currentDocument -- Get the current document
  Just button <- fmap castToHTMLButtonElement <$> createElement doc (Just "button") -- Create a button element
  setInnerText button (Just label) -- Set the button label
  button `onclick` handler -- Set the button handler
  return button -- Return the button element

-- A function to create a text input with a placeholder
createInput :: Text -> IO HTMLInputElement
createInput placeholder = do
  Just doc <- currentDocument -- Get the current document
  Just input <- fmap castToHTMLInputElement <$> createElement doc (Just "input") -- Create an input element
  input `setAttribute` ("type", "text") -- Set the input type to text
  input `setAttribute` ("placeholder", placeholder) -- Set the input placeholder
  return input -- Return the input element

-- A function to create a div element with a text content
createDiv :: Text -> IO HTMLDivElement
createDiv text = do
  Just doc <- currentDocument -- Get the current document
  Just div <- fmap castToHTMLDivElement <$> createElement doc (Just "div") -- Create a div element
  setInnerText div (Just text) -- Set the div text content
  return div -- Return the div element

-- A function to append a child node to a parent node
appendChildTo :: Node -> Node -> IO ()
appendChildTo parent child = do
  _ <- appendChild parent (Just child) -- Append the child node to the parent node
  return () -- Return nothing

-- A function to set an attribute to an element
setAttribute :: Element -> (Text, Text) -> IO ()
setAttribute element (name, value) = do
  _ <- element `setAttributeNS` (Nothing, name, value) -- Set the attribute name and value to the element
  return () -- Return nothing

-- A function to set an onclick handler to an element
onclick :: IsElement self => self -> IO () -> IO (IO ())
onclick element handler = do
  cb <- asyncCallback1 $ \_ -> handler -- Create a callback for the handler
  element `addEventListener` ("click", cb, False) -- Add a click event listener to the element
  return (releaseCallback cb) -- Return a function to release the callback

-- A function to scan a directory for files containing the string 'fivesixteensvg' in the filename
-- Returns a list of file names, or an empty list if none found
scanFiles :: FilePath -> IO [FilePath]
scanFiles dir = do
  exists <- doesDirectoryExist dir -- Check if the directory exists
  if exists -- If the directory exists
    then do
      files <- listDirectory dir -- List the files in the directory
      return $ filter (isInfixOf "fivesixteensvg") files -- Filter the files that contain the string 'fivesixteensvg'
    else return [] -- If the directory does not exist, return an empty list

-- A function to execute a Javascript file using GHCJS
-- Returns nothing, but prints the output to the console
executeJS :: FilePath -> IO ()
executeJS file = do
  js <- readFile file -- Read the Javascript file
  eval js -- Evaluate the Javascript code
  return () -- Return nothing

-- A function to create a web page with the directory tree and the option to execute a Javascript file
createWebPage :: IO ()
createWebPage = do
  Just doc <- currentDocument -- Get the current document
  Just body <- getBody doc -- Get the body element
  browseButton <- createButton "Browse" browse -- Create a button to browse the directory tree
  appendChildTo body browseButton -- Append the button to the body
  executeButton <- createButton "Execute" execute -- Create a button to execute a Javascript file
  appendChildTo body executeButton -- Append the button to the body
  where -- ^ Not !where parameter typing goes here
    -- A helper function to browse the directory tree
    browse :: IO ()
    browse = do
      path <- prompt "Enter the path of the directory you want to browse:" -- Ask the user to enter the path
      when (path /= "") $ do -- If the path is not empty
        files <- scanFiles path -- Scan the directory for files
        forM_ files $ \file -> do -- For each file
          div <- createDiv (pack file) -- Create a div element with the file name
          Just doc <- currentDocument -- Get the current document
          Just body <- getBody doc -- Get the body element
          appendChildTo body div -- Append the div to the body

    -- A helper function to execute a Javascript file
    execute :: IO ()
    execute = do
      file <- prompt "Enter the name of the Javascript file you want to execute:" -- Ask the user to enter the file name
      when (file /= "") $ do -- If the file name is not empty
        executeJS file -- Execute the Javascript file

-- A helper function to prompt the user for input
prompt :: Text -> IO Text
prompt message = do
  Just doc <- currentDocument -- Get the current document
  Just input <- fmap castToHTMLInputElement <$> getElementById doc "prompt-input" -- Get the input element by id
  Just button <- fmap castToHTMLButtonElement <$> getElementById doc "prompt-button" -- Get the button element by id
  Just div <- fmap castToHTMLDivElement <$> getElementById doc "prompt-div" -- Get the div element by id
  setInnerText div (Just message) -- Set the div text to the message
  setValue input (Just "") -- Clear the input value
  setAttribute div ("style", "display: block;") -- Show the div element
  value <- newEmptyMVar -- Create an empty MVar to store the value
  release <- button `onclick` do -- Set the button onclick handler
    v <- getValue input -- Get the input value
    putMVar value (fromJust v) -- Put the value in the MVar
    setAttribute div ("style", "display: none;") -- Hide the div element
  takeMVar value -- Take the value from the MVar
  release -- Release the button onclick handler
  return value -- Return the value

-- The main function
main :: IO ()
main = do
  createWebPage -- Create a web page with the directory tree and the option to execute a Javascript file
{- | This comment will describe the overall function and its name. You can find more information about commenting
    in Haskell in the Haskell Cheat Sheet or the [Haddock User Guide]. -}
    --