{-# LANGUAGE MultiWayIf #-}

module IrcBot.BotCustomCommands where

import Network.Connection
import qualified Data.ByteString.Char8 as C
import IrcBot.BotNetwork
import IrcBot.BotNetworkCommands
import IrcBot.MessageParser
import Data.List.Split
import Data.Maybe
import IrcBot.Definitions.ServerResponse
import IrcBot.Definitions.Options
import IrcBot.Definitions.ServerAddress
import qualified Data.Aeson as A
import qualified Data.ByteString.Lazy as L
import IrcBot.JsonConfigDecoder
import GHC.Generics
import IrcBot.Config.ConfigHelper
import System.IO  
import System.Directory

  

data MethodList  = MethodList { methods :: [MethodDefinition]}



hasStringExist :: String -> C.ByteString -> Bool
hasStringExist search source = 
    do
        let byteStringSearch = C.pack search
        C.isInfixOf byteStringSearch source



basicEcho :: IServerResponse -> IO String
basicEcho serverResponse  = do
      return $ prepareSendMessage (messageTarget serverResponse) "EXAMPLE MESSAGE" 


ping :: IServerResponse -> IO String
ping serverResponse  = do
      return $ preparePong (readDataString serverResponse)


join :: IServerResponse -> IO String
join serverResponse = do
                  let splittedData = splitOn " " (messageText serverResponse)
                  output <-  L.readFile  ".connection.json"
                  let option = fromJust (A.decode output :: Maybe IOptions)
                  let myServers =  (servers option)
                  let targetChannelName = (splittedData!!1)
                  result <- mapM (\x -> if (serverName serverResponse) == (server x) then return $ x { channels = ((channels x) ++ [targetChannelName]) } else return x ) (myServers)
                  -- let newConnectionJson = IOptions { servers = myServers }
                  -- writeConfigFile newConnectionJson
                  writeConfigFile option result
                  return $ prepareJoinChannel (channelName serverResponse)               


-- filterExample :: String -> [String] -> [String]
-- filterExample a b = filter (\n -> n /= a) b

leftCommand :: IServerResponse -> IO String
leftCommand serverResponse = do
                let currentChannelName = (channelName serverResponse)
                output <-  L.readFile  ".connection.json"
                let option = fromJust (A.decode output :: Maybe IOptions)
                let myServers =  (servers option)
                result <- mapM (\x -> if (serverName serverResponse) ==  (server x) then return $ x { channels = (filter (\n -> n /= currentChannelName) (channels x)) } else return x ) (myServers)
                writeConfigFile option result
                return $ "just returning string io"

autoconnect :: IServerResponse -> IO String
autoconnect serverResponse  = do
      return $ prepareJoinChannel (channelName serverResponse)


randomImage :: IServerResponse -> IO String 
randomImage serverResponse  = do
                x <- basicRandomImplementation (messageText serverResponse) 
                return $ prepareSendMessage (channelName serverResponse) x
                
               

botsCommand :: IServerResponse -> IO String
botsCommand serverResponse = do
              does <- doesFileExist ".bots.txt"
              if does then do
                handle <- openFile ".bots.txt" ReadMode
                content <- hGetContents handle
                if length content > 0 then
                      return $ prepareSendMessage (channelName serverResponse) content
                else return $ prepareSendMessage (channelName serverResponse) "bots.txt is empty"    
              else return $ prepareSendMessage (channelName serverResponse) "bots.txt doesnt exist"


quitCommand :: IServerResponse -> IO String
quitCommand serverResponse  = do
      return $ prepareQuit



leaveCommand :: IServerResponse -> IO String
leaveCommand serverResponse  = do
      return $ prepareDisconnectFromChannel (channelName serverResponse)


data CommandTypes = SERVER | USER | NON_RETURN_ACTION deriving(Eq)


data MethodDefinition = MethodDefinition { callerString :: String, callableFunction :: IServerResponse -> IO String, commandType :: CommandTypes }

basicEchoDefinition = MethodDefinition  { callerString = ".echo", callableFunction = basicEcho,  commandType = USER  }      
pingDefinition = MethodDefinition  { callerString = "PING", callableFunction = ping, commandType = SERVER }      
bostDefinition = MethodDefinition  { callerString = ".bots", callableFunction = botsCommand, commandType = USER }      
quitDefinition = MethodDefinition  { callerString = ".quit", callableFunction = quitCommand, commandType = USER }      
leaveDefinition = MethodDefinition  { callerString = ".leave", callableFunction = leaveCommand, commandType = USER }      
leftDefinition = MethodDefinition  { callerString = ".left", callableFunction = leftCommand, commandType = NON_RETURN_ACTION }      
autoconnectDefinition = MethodDefinition  { callerString = "KICK", callableFunction = autoconnect, commandType = NON_RETURN_ACTION }      


myMethodList = MethodList {methods = [basicEchoDefinition,pingDefinition,bostDefinition,quitDefinition,leaveDefinition,autoconnectDefinition] }
myAdminMethodList = MethodList { methods = []}