{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE FlexibleContexts #-}
module Villefort.Server  where

import Web.Scotty
import Control.Monad.Reader
import Control.Monad.IO.Class
import Control.Concurrent
import Data.List.Split
import Data.Text.Lazy hiding (splitOn,map,concat,head)
import Villefort.Database
import Villefort.Todo
import Villefort.Stats
import Villefort.Definitions
import Villefort.Weekly
import Paths_Villefort
import Villefort.Time
import Villefort.Daily
import System.IO.Strict as S
import System.Environment
import Control.Monad

import System.Process
import System.Directory
import System.Posix.Process


getWeeks ::(MonadReader VConfig m,MonadIO m) =>  m [[[Char]]]
getWeeks = do
  rawSql <- makeQuery "select id, Title from weeks where state = 1 order by Title"
  return $ Prelude.mapM (\x -> [Prelude.head x ,( Prelude.tail (Prelude.last x))]) rawSql


getIndex :: [[Char]] -> Int -> [Char]
getIndex str i = (Data.List.Split.splitOn "=" (str !! i)) !! 1


-- | Converts date from Javascript to sqlite date fromat 
convDate :: String -> String
convDate date = newDate
        where splitDate = Data.List.Split.splitOn "%2F" date
              newDate = (splitDate !! 2) ++ "-" ++ (splitDate !! 0) ++ "-" ++ (splitDate !! 1)


-- | makes html for radiobutton
makeRadio :: String -> String
makeRadio x =  "<dd><input type='radio' name='subject' value='"++ x ++ "'> " ++ x ++ "</br> \n"

makeNewPage :: (MonadReader VConfig m, MonadIO m) => m String
makeNewPage = do
  headerPath <-liftIO $  getDataFileName "templates/header"
  htmlHeader <- liftIO $ S.readFile headerPath
  addPath <- liftIO $ getDataFileName "templates/add.html"
  add <- liftIO $ S.readFile addPath
  let splitWeeks = splitOn "?" add
  subjects <- getSubjects
  let radiobuttons =  map makeRadio subjects
  return (htmlHeader ++ (splitWeeks !! 0) ++ (concat radiobuttons) ++ (splitWeeks !! 1))
 
-- | Main function of loop



villefort :: VConfig -> IO ()
villefort conf = do
  args <- getArgs
  case args of
    ["--custom",_] -> putStrLn "custom" >> launch conf 
    ["--recompile"] -> putStrLn "recompiling" >> recompile
    _ -> putStrLn "straight starting " >> do
      if noCustom conf
        then launch conf >> putStrLn "overload"
        else checkCustomBuild >> launch conf

recompile :: IO ()
recompile = do
  dir <- getAppUserDataDirectory "villefort"
  let execPath = dir ++ "/villefort"
      sourcePath = dir ++"/villefort.hs"
  (_,_,_,pid) <- createProcess (proc "/usr/bin/ghc" ["-o",execPath,sourcePath])
  _ <-
    waitForProcess pid
  return ()

checkCustomBuild :: IO ()
checkCustomBuild = do
  dir <- getAppUserDataDirectory "villefort"
  let path = dir ++ "/villefort"
  putStrLn path
  isBuild <- doesFileExist path
  dataDir <- getDataDir
  if isBuild
    then putStrLn "custom buil detected" >> executeFile path True ["--custom",dataDir] Nothing
    else putStrLn "no custom build :("

launch :: VConfig -> IO ()    
launch conf = do      
  _ <- forkIO $ dailyCheck conf
  scotty ( port conf) $ do
    get "/" $ do
      todos <- liftIO $ runReaderT  getTodos conf
      html $ pack $ todos
      
    get "/new" $ do
      page <- liftIO $ runReaderT makeNewPage conf
      html $ pack page
      
    post "/delete" $ do
      rawHtml <- body
      runReaderT (deleteTodo rawHtml) conf
      redirect "/"

    post "/update" $ do
      rawHtml <- body
      let da   = Data.List.Split.splitOn "&" (show rawHtml)
      do liftIO $ print $ show da
      let rawid = Data.List.Split.splitOn "=" $  (Prelude.init (da !! 1))
      let sqlId   = read (rawid!! 1) :: Int
      let rawtime = Data.List.Split.splitOn "=" $ (da !! 0)
      do liftIO $ print rawtime
      let insertTime = read (rawtime !! 1) :: Int
      do liftIO $ runReaderT (updateTask sqlId insertTime) conf
      redirect "/"

    post "/add" $ do
      rawBody <-body
      let parse = Data.List.Split.splitOn "&" (show rawBody)
      do liftIO $ print parse
      let rep y = map (\x -> if x == '+' then ' ' else x) y
      let summary = rep $ getIndex parse 0
      let date    = convDate $ getIndex parse 3
      let todoTitle   = rep $ getIndex parse 1
      let todoSubject = rep $ getIndex parse 2
      liftIO $ runReaderT (addTask todoTitle summary date todoSubject) conf
      redirect "/"
  
    get "/time" $ do
      dat <-liftIO $ runReaderT getSummary conf
      html $ pack  dat
       
  

    get "/js-chart-widgets.min.js" $ do 
     jsPath <- liftIO $  getDataFileName "templates/js.js"
     file jsPath

    get "/templates/:asset" $ do
      asset <- param "asset"
      path <- liftIO $ getDataFileName $ "templates/" ++ asset
      file path
     
    get "/weekly" $ do
      to <- liftIO $ runReaderT weeklyStats conf
      html $ pack to

      
    get "/stat" $ do
      page <- liftIO $runReaderT  genStats conf
      html $ pack page