{-# LANGUAGE OverloadedStrings #-}
module Main where

import Web.Scotty
import Data.Char
import Control.Monad.IO.Class
import Database.HDBC.Sqlite3 
import Database.HDBC
import Data.List.Split
import Data.Text.Lazy.Encoding (decodeUtf8)
import Data.Text.Lazy hiding (splitOn,map,concat)
import Data.Time
import Database
import Todo
import Stats
import Paths_Villefort



getDone = makeQuery  "select Title, time  from todo where due = Date('now','localtime') and state = 0" 

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


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 split = Data.List.Split.splitOn "%2F" date
              newDate = (split !! 2) ++ "-" ++ (split !! 0) ++ "-" ++ (split !! 1)


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

makeNewPage = do
  path <- getDataFileName "templates/add.html"
  rawhtml <- liftIO $ readFile path
  let split = splitOn "?" rawhtml
  subjects <- getSubjects
  let radiobuttons = map makeRadio subjects
  return ((split !! 0) ++ (concat radiobuttons) ++ (split !! 1))
 
-- | Main function of loop
main :: IO ()
main = do
  scotty 3002 $ do
    get "/" $ do
      todos <- liftIO  getTodos
      html $ pack $ todos
      
    get "/new" $ do
      page <- liftIO makeNewPage
      html $ pack page
      
    post "/delete" $ do
      raw <- body
      deleteTodo raw
      redirect "/"

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

    post "/add" $ do
      raw <-body
      conn <- liftIO $ getDb
      let parse = Data.List.Split.splitOn "&" (show raw)
      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 title   = rep $ getIndex parse 1
      let subject = rep $ getIndex parse 2
      stmt <- liftIO $ prepare conn "insert into todo (Description,Title,Entered,Due,State,time,Subject) Values (?,?,current_date,?,1,0,?)"
      do liftIO $ execute stmt [toSql title,toSql summary,toSql date,toSql subject]
      do liftIO $ commit conn
      do liftIO $ disconnect conn
      redirect "/"

  
    get "/time" $ do
      dat <- liftIO $ getDone
      html $ pack  $ ("<h1> Shit I've done today </h1> " ++ (show dat))

   

    get "/js-chart-widgets.min.js" $ do
      path <- liftIO $  getDataFileName "js.js"
      file path
      
    get "/stat" $ do
      page <- liftIO $ genStats
      html $ pack page