{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ScopedTypeVariables #-}

module Zenith.CLI where

import qualified Brick.AttrMap as A
import qualified Brick.BChan as BC
import qualified Brick.Focus as F
import Brick.Forms
  ( Form(..)
  , (@@=)
  , allFieldsValid
  , editShowableFieldWithValidate
  , editTextField
  , focusedFormInputAttr
  , handleFormEvent
  , invalidFormInputAttr
  , newForm
  , renderForm
  , setFieldValid
  , updateFormState
  )
import qualified Brick.Main as M
import qualified Brick.Types as BT
import Brick.Types (Widget)
import Brick.Util (bg, clamp, fg, on, style)
import qualified Brick.Widgets.Border as B
import Brick.Widgets.Border.Style (unicode, unicodeBold)
import qualified Brick.Widgets.Center as C
import Brick.Widgets.Core
  ( Padding(..)
  , (<+>)
  , (<=>)
  , emptyWidget
  , fill
  , hBox
  , hLimit
  , joinBorders
  , padAll
  , padBottom
  , str
  , strWrap
  , strWrapWith
  , txt
  , txtWrap
  , txtWrapWith
  , updateAttrMap
  , vBox
  , vLimit
  , withAttr
  , withBorderStyle
  )
import qualified Brick.Widgets.Dialog as D
import qualified Brick.Widgets.Edit as E
import qualified Brick.Widgets.List as L
import qualified Brick.Widgets.ProgressBar as P
import Control.Concurrent (forkIO, threadDelay)
import Control.Exception (catch, throw, throwIO, try)
import Control.Monad (forever, void)
import Control.Monad.IO.Class (liftIO)
import Control.Monad.Logger (LoggingT, runFileLoggingT, runNoLoggingT)
import Data.Aeson
import Data.HexString (toText)
import Data.Maybe
import qualified Data.Text as T
import qualified Data.Text.Encoding as E
import Data.Time.Clock.POSIX (posixSecondsToUTCTime)
import qualified Data.Vector as Vec
import Database.Persist
import Database.Persist.Sqlite
import qualified Graphics.Vty as V
import qualified Graphics.Vty.CrossPlatform as VC
import Lens.Micro ((&), (.~), (^.), set)
import Lens.Micro.Mtl
import Lens.Micro.TH
import System.Hclip
import Text.Wrap (FillScope(..), FillStrategy(..), WrapSettings(..), wrapText)
import ZcashHaskell.Keys (generateWalletSeedPhrase, getWalletSeed)
import ZcashHaskell.Orchard (getSaplingFromUA, isValidUnifiedAddress)
import ZcashHaskell.Sapling (decodeSaplingAddress, isValidShieldedAddress)
import ZcashHaskell.Transparent
  ( decodeExchangeAddress
  , decodeTransparentAddress
  , encodeTransparentReceiver
  )
import ZcashHaskell.Types
import ZcashHaskell.Utils (getBlockTime, makeZebraCall)
import Zenith.Core
import Zenith.DB
import Zenith.Scanner (processTx)
import Zenith.Types
  ( Config(..)
  , PhraseDB(..)
  , UnifiedAddressDB(..)
  , ZcashNetDB(..)
  )
import Zenith.Utils (displayTaz, displayZec, jsonNumber, showAddress)

data Name
  = WList
  | AList
  | AcList
  | TList
  | HelpDialog
  | DialogInputField
  | RecField
  | AmtField
  | MemoField
  deriving (Eq, Show, Ord)

data DialogInput = DialogInput
  { _dialogInput :: !T.Text
  } deriving (Show)

makeLenses ''DialogInput

data SendInput = SendInput
  { _sendTo :: !T.Text
  , _sendAmt :: !Float
  , _sendMemo :: !T.Text
  } deriving (Show)

makeLenses ''SendInput

data DialogType
  = WName
  | AName
  | AdName
  | WSelect
  | ASelect
  | SendTx
  | Blank

data DisplayType
  = AddrDisplay
  | MsgDisplay
  | PhraseDisplay
  | TxDisplay
  | SyncDisplay
  | SendDisplay
  | BlankDisplay

data Tick
  = TickVal !Float
  | TickMsg !String

data State = State
  { _network :: !ZcashNet
  , _wallets :: !(L.List Name (Entity ZcashWallet))
  , _accounts :: !(L.List Name (Entity ZcashAccount))
  , _addresses :: !(L.List Name (Entity WalletAddress))
  , _transactions :: !(L.List Name (Entity UserTx))
  , _msg :: !String
  , _helpBox :: !Bool
  , _dialogBox :: !DialogType
  , _splashBox :: !Bool
  , _inputForm :: !(Form DialogInput () Name)
  , _focusRing :: !(F.FocusRing Name)
  , _startBlock :: !Int
  , _dbPath :: !T.Text
  , _zebraHost :: !T.Text
  , _zebraPort :: !Int
  , _displayBox :: !DisplayType
  , _syncBlock :: !Int
  , _balance :: !Integer
  , _barValue :: !Float
  , _eventDispatch :: !(BC.BChan Tick)
  , _timer :: !Int
  , _txForm :: !(Form SendInput () Name)
  }

makeLenses ''State

drawUI :: State -> [Widget Name]
drawUI s = [splashDialog s, helpDialog s, displayDialog s, inputDialog s, ui s]
  where
    ui :: State -> Widget Name
    ui st =
      joinBorders $
      withBorderStyle unicode $
      B.borderWithLabel
        (str
           ("Zenith - " <>
            show (st ^. network) <>
            " - " <>
            T.unpack
              (maybe
                 "(None)"
                 (\(_, w) -> zcashWalletName $ entityVal w)
                 (L.listSelectedElement (st ^. wallets)))))
        (C.hCenter
           (str
              ("Account: " ++
               T.unpack
                 (maybe
                    "(None)"
                    (\(_, a) -> zcashAccountName $ entityVal a)
                    (L.listSelectedElement (st ^. accounts))))) <=>
         C.hCenter
           (str
              ("Balance: " ++
               if st ^. network == MainNet
                 then displayZec (st ^. balance)
                 else displayTaz (st ^. balance))) <=>
         listAddressBox "Addresses" (st ^. addresses) <+>
         B.vBorder <+>
         (C.hCenter (str ("Last block seen: " ++ show (st ^. syncBlock))) <=>
          listTxBox "Transactions" (st ^. network) (st ^. transactions))) <=>
      C.hCenter
        (hBox
           [ capCommand "W" "allets"
           , capCommand "A" "ccounts"
           , capCommand "V" "iew address"
           , capCommand "Q" "uit"
           , str $ show (st ^. timer)
           ])
    listBox :: Show e => String -> L.List Name e -> Widget Name
    listBox titleLabel l =
      C.vCenter $
      vBox
        [ C.hCenter
            (B.borderWithLabel (str titleLabel) $
             hLimit 25 $ vLimit 15 $ L.renderList listDrawElement True l)
        , str " "
        , C.hCenter $ str "Select "
        ]
    selectListBox ::
         Show e
      => String
      -> L.List Name e
      -> (Bool -> e -> Widget Name)
      -> Widget Name
    selectListBox titleLabel l drawF =
      vBox
        [ C.hCenter
            (B.borderWithLabel (str titleLabel) $
             hLimit 25 $ vLimit 15 $ L.renderList drawF True l)
        , str " "
        ]
    listAddressBox ::
         String -> L.List Name (Entity WalletAddress) -> Widget Name
    listAddressBox titleLabel a =
      C.vCenter $
      vBox
        [ C.hCenter
            (B.borderWithLabel (str titleLabel) $
             hLimit 40 $ vLimit 15 $ L.renderList listDrawAddress True a)
        , str " "
        , C.hCenter
            (hBox
               [ capCommand "↑↓ " "move"
               , capCommand "↲ " "select"
               , capCommand "Tab " "->"
               ])
        ]
    listTxBox ::
         String -> ZcashNet -> L.List Name (Entity UserTx) -> Widget Name
    listTxBox titleLabel znet tx =
      C.vCenter $
      vBox
        [ C.hCenter
            (B.borderWithLabel (str titleLabel) $
             hLimit 50 $ vLimit 15 $ L.renderList (listDrawTx znet) True tx)
        , str " "
        , C.hCenter
            (hBox
               [ capCommand "↑↓ " "move"
               , capCommand "T" "x Display"
               , capCommand "Tab " "<-"
               ])
        ]
    helpDialog :: State -> Widget Name
    helpDialog st =
      if st ^. helpBox
        then D.renderDialog
               (D.dialog (Just (str "Commands")) Nothing 55)
               (vBox ([C.hCenter $ str "Key", B.hBorder] <> keyList) <+>
                vBox ([str "Actions", B.hBorder] <> actionList))
        else emptyWidget
      where
        keyList = map (C.hCenter . str) ["?", "Esc", "w", "a", "v", "q"]
        actionList =
          map
            (hLimit 40 . str)
            [ "Open help"
            , "Close dialog"
            , "Switch wallets"
            , "Switch accounts"
            , "View address"
            , "Quit"
            ]
    inputDialog :: State -> Widget Name
    inputDialog st =
      case st ^. dialogBox of
        WName ->
          D.renderDialog
            (D.dialog (Just (str "Create Wallet")) Nothing 50)
            (renderForm $ st ^. inputForm)
        AName ->
          D.renderDialog
            (D.dialog (Just (str "Create Account")) Nothing 50)
            (renderForm $ st ^. inputForm)
        AdName ->
          D.renderDialog
            (D.dialog (Just (str "Create Address")) Nothing 50)
            (renderForm $ st ^. inputForm)
        WSelect ->
          D.renderDialog
            (D.dialog (Just (str "Select Wallet")) Nothing 50)
            (selectListBox "Wallets" (st ^. wallets) listDrawWallet <=>
             C.hCenter
               (hBox
                  [ capCommand "↑↓ " "move"
                  , capCommand "↲ " "select"
                  , capCommand "N" "ew"
                  , capCommand "S" "how phrase"
                  , xCommand
                  ]))
        ASelect ->
          D.renderDialog
            (D.dialog (Just (str "Select Account")) Nothing 50)
            (selectListBox "Accounts" (st ^. accounts) listDrawAccount <=>
             C.hCenter
               (hBox
                  [ capCommand "↑↓ " "move"
                  , capCommand "↲ " "select"
                  , capCommand "N" "ew"
                  , xCommand
                  ]))
        SendTx ->
          D.renderDialog
            (D.dialog (Just (str "Send Transaction")) Nothing 50)
            (renderForm (st ^. txForm) <=>
             C.hCenter
               (hBox [capCommand "↲ " "Send", capCommand "<esc> " "Cancel"]))
        Blank -> emptyWidget
    splashDialog :: State -> Widget Name
    splashDialog st =
      if st ^. splashBox
        then withBorderStyle unicodeBold $
             D.renderDialog
               (D.dialog Nothing Nothing 30)
               (withAttr
                  titleAttr
                  (str
                     " _____          _ _   _     \n|__  /___ _ __ (_) |_| |__\n  / // _ \\ '_ \\| | __| '_ \\\n / /|  __/ | | | | |_| | | |\n/____\\___|_| |_|_|\\__|_| |_|") <=>
                C.hCenter (withAttr titleAttr (str "Zcash Wallet v0.5.0.0")) <=>
                C.hCenter (withAttr blinkAttr $ str "Press any key..."))
        else emptyWidget
    capCommand :: String -> String -> Widget Name
    capCommand k comm = hBox [withAttr titleAttr (str k), str comm, str " | "]
    xCommand :: Widget Name
    xCommand = hBox [str "E", withAttr titleAttr (str "x"), str "it"]
    displayDialog :: State -> Widget Name
    displayDialog st =
      case st ^. displayBox of
        AddrDisplay ->
          case L.listSelectedElement $ st ^. addresses of
            Just (_, a) ->
              withBorderStyle unicodeBold $
              D.renderDialog
                (D.dialog
                   (Just $ txt ("Address: " <> walletAddressName (entityVal a)))
                   Nothing
                   60)
                (padAll 1 $
                 B.borderWithLabel
                   (str "Unified")
                   (txtWrapWith (WrapSettings False True NoFill FillAfterFirst) $
                    getUA $ walletAddressUAddress $ entityVal a) <=>
                 B.borderWithLabel
                   (str "Legacy Shielded")
                   (txtWrapWith (WrapSettings False True NoFill FillAfterFirst) $
                    fromMaybe "None" $
                    (getSaplingFromUA .
                     E.encodeUtf8 . getUA . walletAddressUAddress)
                      (entityVal a)) <=>
                 B.borderWithLabel
                   (str "Transparent")
                   (txtWrapWith (WrapSettings False True NoFill FillAfterFirst) $
                    maybe "None" (encodeTransparentReceiver (st ^. network)) $
                    t_rec =<<
                    (isValidUnifiedAddress .
                     E.encodeUtf8 . getUA . walletAddressUAddress)
                      (entityVal a)) <=>
                 C.hCenter
                   (hBox
                      [ str "Copy: "
                      , capCommand "U" "nified"
                      , capCommand "S" "apling"
                      , capCommand "T" "ransparent"
                      ]) <=>
                 C.hCenter xCommand)
            Nothing -> emptyWidget
        PhraseDisplay ->
          case L.listSelectedElement $ st ^. wallets of
            Just (_, w) ->
              withBorderStyle unicodeBold $
              D.renderDialog
                (D.dialog (Just $ txt "Seed Phrase") Nothing 50)
                (padAll 1 $
                 txtWrap $
                 E.decodeUtf8Lenient $
                 getBytes $ getPhrase $ zcashWalletSeedPhrase $ entityVal w)
            Nothing -> emptyWidget
        MsgDisplay ->
          withBorderStyle unicodeBold $
          D.renderDialog
            (D.dialog (Just $ txt "Message") Nothing 50)
            (padAll 1 $ strWrap $ st ^. msg)
        TxDisplay ->
          case L.listSelectedElement $ st ^. transactions of
            Nothing -> emptyWidget
            Just (_, tx) ->
              withBorderStyle unicodeBold $
              D.renderDialog
                (D.dialog (Just $ txt "Transaction") Nothing 50)
                (padAll
                   1
                   (str
                      ("Date:   " ++
                       show
                         (posixSecondsToUTCTime
                            (fromIntegral (userTxTime $ entityVal tx)))) <=>
                    (str "Tx ID:  " <+>
                     strWrapWith
                       (WrapSettings False True NoFill FillAfterFirst)
                       (show (userTxHex $ entityVal tx))) <=>
                    str
                      ("Amount: " ++
                       if st ^. network == MainNet
                         then displayZec
                                (fromIntegral $ userTxAmount $ entityVal tx)
                         else displayTaz
                                (fromIntegral $ userTxAmount $ entityVal tx)) <=>
                    (txt "Memo:   " <+>
                     txtWrapWith
                       (WrapSettings False True NoFill FillAfterFirst)
                       (userTxMemo (entityVal tx)))))
        SyncDisplay ->
          withBorderStyle unicodeBold $
          D.renderDialog
            (D.dialog (Just $ txt "Sync") Nothing 50)
            (padAll
               1
               (updateAttrMap
                  (A.mapAttrNames
                     [ (barDoneAttr, P.progressCompleteAttr)
                     , (barToDoAttr, P.progressIncompleteAttr)
                     ])
                  (P.progressBar
                     (Just $ show (st ^. barValue * 100))
                     (_barValue st))))
        SendDisplay ->
          withBorderStyle unicodeBold $
          D.renderDialog
            (D.dialog (Just $ txt "Sending Transaction") Nothing 50)
            (padAll 1 (str $ st ^. msg))
        BlankDisplay -> emptyWidget

mkInputForm :: DialogInput -> Form DialogInput e Name
mkInputForm =
  newForm
    [label "Name: " @@= editTextField dialogInput DialogInputField (Just 1)]
  where
    label s w =
      padBottom (Pad 1) $ vLimit 1 (hLimit 15 $ str s <+> fill ' ') <+> w

mkSendForm :: Integer -> SendInput -> Form SendInput e Name
mkSendForm bal =
  newForm
    [ label "To:     " @@= editTextField sendTo RecField (Just 1)
    , label "Amount: " @@=
      editShowableFieldWithValidate sendAmt AmtField (isAmountValid bal)
    , label "Memo:   " @@= editTextField sendMemo MemoField (Just 1)
    ]
  where
    isAmountValid :: Integer -> Float -> Bool
    isAmountValid b i = (fromIntegral b * 100000000.0) >= i
    label s w =
      padBottom (Pad 1) $ vLimit 1 (hLimit 15 $ str s <+> fill ' ') <+> w

isRecipientValid :: T.Text -> Bool
isRecipientValid a =
  case isValidUnifiedAddress (E.encodeUtf8 a) of
    Just _a1 -> True
    Nothing ->
      isValidShieldedAddress (E.encodeUtf8 a) ||
      (case decodeTransparentAddress (E.encodeUtf8 a) of
         Just _a3 -> True
         Nothing ->
           case decodeExchangeAddress a of
             Just _a4 -> True
             Nothing -> False)

listDrawElement :: (Show a) => Bool -> a -> Widget Name
listDrawElement sel a =
  let selStr s =
        if sel
          then withAttr customAttr (str $ "<" <> s <> ">")
          else str s
   in C.hCenter $ selStr $ show a

listDrawWallet :: Bool -> Entity ZcashWallet -> Widget Name
listDrawWallet sel w =
  let selStr s =
        if sel
          then withAttr customAttr (txt $ "<" <> s <> ">")
          else txt s
   in C.hCenter $ selStr $ zcashWalletName (entityVal w)

listDrawAccount :: Bool -> Entity ZcashAccount -> Widget Name
listDrawAccount sel w =
  let selStr s =
        if sel
          then withAttr customAttr (txt $ "<" <> s <> ">")
          else txt s
   in C.hCenter $ selStr $ zcashAccountName (entityVal w)

listDrawAddress :: Bool -> Entity WalletAddress -> Widget Name
listDrawAddress sel w =
  let selStr s =
        if sel
          then withAttr customAttr (txt $ "<" <> s <> ">")
          else txt s
   in C.hCenter $
      selStr $
      walletAddressName (entityVal w) <>
      ": " <> showAddress (walletAddressUAddress (entityVal w))

listDrawTx :: ZcashNet -> Bool -> Entity UserTx -> Widget Name
listDrawTx znet sel tx =
  selStr $
  T.pack
    (show $ posixSecondsToUTCTime (fromIntegral (userTxTime $ entityVal tx))) <>
  " " <> T.pack fmtAmt
  where
    amt = fromIntegral $ userTxAmount $ entityVal tx
    dispAmount =
      if znet == MainNet
        then displayZec amt
        else displayTaz amt
    fmtAmt =
      if amt > 0
        then "↘" <> dispAmount <> " "
        else " " <> dispAmount <> "↗"
    selStr s =
      if sel
        then withAttr customAttr (txt $ "> " <> s)
        else txt $ "  " <> s

customAttr :: A.AttrName
customAttr = L.listSelectedAttr <> A.attrName "custom"

titleAttr :: A.AttrName
titleAttr = A.attrName "title"

blinkAttr :: A.AttrName
blinkAttr = A.attrName "blink"

baseAttr :: A.AttrName
baseAttr = A.attrName "base"

barDoneAttr :: A.AttrName
barDoneAttr = A.attrName "done"

barToDoAttr :: A.AttrName
barToDoAttr = A.attrName "remaining"

validBarValue :: Float -> Float
validBarValue = clamp 0 1

scanZebra :: T.Text -> T.Text -> Int -> Int -> BC.BChan Tick -> IO ()
scanZebra dbP zHost zPort b eChan = do
  _ <- liftIO $ initDb dbP
  bStatus <- liftIO $ checkBlockChain zHost zPort
  pool <- runNoLoggingT $ initPool dbP
  dbBlock <- runNoLoggingT $ getMaxBlock pool
  let sb = max dbBlock b
  if sb > zgb_blocks bStatus || sb < 1
    then do
      liftIO $ BC.writeBChan eChan $ TickMsg "Invalid starting block for scan"
    else do
      let bList = [(sb + 1) .. (zgb_blocks bStatus)]
      let step = (1.0 :: Float) / fromIntegral (zgb_blocks bStatus - (sb + 1))
      mapM_ (processBlock pool step) bList
  where
    processBlock :: ConnectionPool -> Float -> Int -> IO ()
    processBlock pool step bl = do
      r <-
        liftIO $
        makeZebraCall
          zHost
          zPort
          "getblock"
          [Data.Aeson.String $ T.pack $ show bl, jsonNumber 1]
      case r of
        Left e1 -> do
          liftIO $ BC.writeBChan eChan $ TickMsg e1
        Right blk -> do
          r2 <-
            liftIO $
            makeZebraCall
              zHost
              zPort
              "getblock"
              [Data.Aeson.String $ T.pack $ show bl, jsonNumber 0]
          case r2 of
            Left e2 -> do
              liftIO $ BC.writeBChan eChan $ TickMsg e2
            Right hb -> do
              let blockTime = getBlockTime hb
              mapM_ (runNoLoggingT . processTx zHost zPort blockTime pool) $
                bl_txs $ addTime blk blockTime
              liftIO $ BC.writeBChan eChan $ TickVal step
    addTime :: BlockResponse -> Int -> BlockResponse
    addTime bl t =
      BlockResponse
        (bl_confirmations bl)
        (bl_height bl)
        (fromIntegral t)
        (bl_txs bl)

appEvent :: BT.BrickEvent Name Tick -> BT.EventM Name State ()
appEvent (BT.AppEvent t) = do
  s <- BT.get
  pool <- liftIO $ runNoLoggingT $ initPool $ s ^. dbPath
  case t of
    TickMsg m -> do
      case s ^. displayBox of
        AddrDisplay -> return ()
        MsgDisplay -> return ()
        PhraseDisplay -> return ()
        TxDisplay -> return ()
        SyncDisplay -> return ()
        SendDisplay -> do
          BT.modify $ set msg m
        BlankDisplay -> return ()
    TickVal v -> do
      case s ^. displayBox of
        AddrDisplay -> return ()
        MsgDisplay -> return ()
        PhraseDisplay -> return ()
        TxDisplay -> return ()
        SendDisplay -> return ()
        SyncDisplay -> do
          if s ^. barValue == 1.0
            then do
              selWallet <-
                do case L.listSelectedElement $ s ^. wallets of
                     Nothing -> do
                       let fWall =
                             L.listSelectedElement $
                             L.listMoveToBeginning $ s ^. wallets
                       case fWall of
                         Nothing -> throw $ userError "Failed to select wallet"
                         Just (_j, w1) -> return w1
                     Just (_k, w) -> return w
              _ <-
                liftIO $
                syncWallet
                  (Config (s ^. dbPath) (s ^. zebraHost) (s ^. zebraPort))
                  selWallet
              BT.modify $ set displayBox BlankDisplay
              BT.modify $ set barValue 0.0
              updatedState <- BT.get
              ns <- liftIO $ refreshWallet updatedState
              BT.put ns
            else BT.modify $ set barValue $ validBarValue (v + s ^. barValue)
        BlankDisplay -> do
          case s ^. dialogBox of
            AName -> return ()
            AdName -> return ()
            WName -> return ()
            WSelect -> return ()
            ASelect -> return ()
            SendTx -> return ()
            Blank -> do
              if s ^. timer == 90
                then do
                  BT.modify $ set barValue 0.0
                  BT.modify $ set displayBox SyncDisplay
                  sBlock <- liftIO $ getMinBirthdayHeight pool
                  _ <-
                    liftIO $
                    forkIO $
                    scanZebra
                      (s ^. dbPath)
                      (s ^. zebraHost)
                      (s ^. zebraPort)
                      sBlock
                      (s ^. eventDispatch)
                  BT.modify $ set timer 0
                  return ()
                else do
                  BT.modify $ set timer $ 1 + s ^. timer
appEvent (BT.VtyEvent e) = do
  r <- F.focusGetCurrent <$> use focusRing
  s <- BT.get
  if s ^. splashBox
    then BT.modify $ set splashBox False
    else if s ^. helpBox
           then do
             case e of
               V.EvKey V.KEsc [] -> do
                 BT.modify $ set helpBox False
               _ev -> return ()
           else do
             case s ^. displayBox of
               AddrDisplay -> do
                 case e of
                   V.EvKey (V.KChar 'x') [] ->
                     BT.modify $ set displayBox BlankDisplay
                   V.EvKey (V.KChar 'u') [] -> do
                     case L.listSelectedElement $ s ^. addresses of
                       Just (_, a) -> do
                         liftIO $
                           setClipboard $
                           T.unpack $
                           getUA $ walletAddressUAddress $ entityVal a
                         BT.modify $
                           set msg $
                           "Copied Unified Address <" ++
                           T.unpack (walletAddressName (entityVal a)) ++ ">!"
                         BT.modify $ set displayBox MsgDisplay
                       Nothing -> return ()
                   V.EvKey (V.KChar 's') [] -> do
                     case L.listSelectedElement $ s ^. addresses of
                       Just (_, a) -> do
                         liftIO $
                           setClipboard $
                           maybe "None" T.unpack $
                           getSaplingFromUA $
                           E.encodeUtf8 $
                           getUA $ walletAddressUAddress $ entityVal a
                         BT.modify $
                           set msg $
                           "Copied Sapling Address <" ++
                           T.unpack (walletAddressName (entityVal a)) ++ ">!"
                         BT.modify $ set displayBox MsgDisplay
                       Nothing -> return ()
                   V.EvKey (V.KChar 't') [] -> do
                     case L.listSelectedElement $ s ^. addresses of
                       Just (_, a) -> do
                         liftIO $
                           setClipboard $
                           T.unpack $
                           maybe
                             "None"
                             (encodeTransparentReceiver (s ^. network)) $
                           t_rec =<<
                           (isValidUnifiedAddress .
                            E.encodeUtf8 . getUA . walletAddressUAddress)
                             (entityVal a)
                         BT.modify $
                           set msg $
                           "Copied Transparent Address <" ++
                           T.unpack (walletAddressName (entityVal a)) ++ ">!"
                         BT.modify $ set displayBox MsgDisplay
                       Nothing -> return ()
                   _ev -> return ()
               MsgDisplay -> BT.modify $ set displayBox BlankDisplay
               PhraseDisplay -> BT.modify $ set displayBox BlankDisplay
               TxDisplay -> BT.modify $ set displayBox BlankDisplay
               SendDisplay -> BT.modify $ set displayBox BlankDisplay
               SyncDisplay -> BT.modify $ set displayBox BlankDisplay
               BlankDisplay -> do
                 case s ^. dialogBox of
                   WName -> do
                     case e of
                       V.EvKey V.KEsc [] -> BT.modify $ set dialogBox Blank
                       V.EvKey V.KEnter [] -> do
                         fs <- BT.zoom inputForm $ BT.gets formState
                         nw <- liftIO $ addNewWallet (fs ^. dialogInput) s
                         ns <- liftIO $ refreshWallet nw
                         BT.put ns
                         aL <- use accounts
                         BT.modify $ set displayBox MsgDisplay
                         BT.modify $
                           set dialogBox $
                           if not (null $ L.listElements aL)
                             then Blank
                             else AName
                       ev ->
                         BT.zoom inputForm $ handleFormEvent (BT.VtyEvent ev)
                   AName -> do
                     case e of
                       V.EvKey V.KEsc [] -> BT.modify $ set dialogBox Blank
                       V.EvKey V.KEnter [] -> do
                         fs <- BT.zoom inputForm $ BT.gets formState
                         ns <-
                           liftIO $
                           refreshAccount =<<
                           addNewAddress "Change" Internal =<<
                           addNewAccount (fs ^. dialogInput) s
                         BT.put ns
                         addrL <- use addresses
                         BT.modify $ set displayBox MsgDisplay
                         BT.modify $
                           set dialogBox $
                           if not (null $ L.listElements addrL)
                             then Blank
                             else AdName
                       ev ->
                         BT.zoom inputForm $ handleFormEvent (BT.VtyEvent ev)
                   AdName -> do
                     case e of
                       V.EvKey V.KEsc [] -> BT.modify $ set dialogBox Blank
                       V.EvKey V.KEnter [] -> do
                         fs <- BT.zoom inputForm $ BT.gets formState
                         nAddr <-
                           liftIO $ addNewAddress (fs ^. dialogInput) External s
                         BT.put nAddr
                         BT.modify $ set displayBox MsgDisplay
                         BT.modify $ set dialogBox Blank
                       ev ->
                         BT.zoom inputForm $ handleFormEvent (BT.VtyEvent ev)
                   WSelect -> do
                     case e of
                       V.EvKey (V.KChar 'x') [] ->
                         BT.modify $ set dialogBox Blank
                       V.EvKey V.KEnter [] -> do
                         ns <- liftIO $ refreshWallet s
                         BT.put ns
                         BT.modify $ set dialogBox Blank
                       V.EvKey (V.KChar 'n') [] -> do
                         BT.modify $
                           set inputForm $
                           updateFormState (DialogInput "New Wallet") $
                           s ^. inputForm
                         BT.modify $ set dialogBox WName
                       V.EvKey (V.KChar 's') [] ->
                         BT.modify $ set displayBox PhraseDisplay
                       ev -> BT.zoom wallets $ L.handleListEvent ev
                   ASelect -> do
                     case e of
                       V.EvKey (V.KChar 'x') [] ->
                         BT.modify $ set dialogBox Blank
                       V.EvKey V.KEnter [] -> do
                         ns <- liftIO $ refreshAccount s
                         BT.put ns
                         BT.modify $ set dialogBox Blank
                       V.EvKey (V.KChar 'n') [] -> do
                         BT.modify $
                           set inputForm $
                           updateFormState (DialogInput "New Account") $
                           s ^. inputForm
                         BT.modify $ set dialogBox AName
                       ev -> BT.zoom accounts $ L.handleListEvent ev
                   SendTx -> do
                     case e of
                       V.EvKey V.KEsc [] -> BT.modify $ set dialogBox Blank
                       V.EvKey V.KEnter [] -> do
                         if allFieldsValid (s ^. txForm)
                           then do
                             pool <-
                               liftIO $ runNoLoggingT $ initPool $ s ^. dbPath
                             selWal <-
                               do case L.listSelectedElement $ s ^. wallets of
                                    Nothing -> do
                                      let fWall =
                                            L.listSelectedElement $
                                            L.listMoveToBeginning $ s ^. wallets
                                      case fWall of
                                        Nothing ->
                                          throw $
                                          userError "Failed to select wallet"
                                        Just (_j, w1) -> return w1
                                    Just (_k, w) -> return w
                             selAcc <-
                               do case L.listSelectedElement $ s ^. accounts of
                                    Nothing -> do
                                      let fAcc =
                                            L.listSelectedElement $
                                            L.listMoveToBeginning $
                                            s ^. accounts
                                      case fAcc of
                                        Nothing ->
                                          throw $
                                          userError "Failed to select wallet"
                                        Just (_j, w1) -> return w1
                                    Just (_k, w) -> return w
                             fs1 <- BT.zoom txForm $ BT.gets formState
                             bl <-
                               liftIO $ getLastSyncBlock pool $ entityKey selWal
                             _ <-
                               liftIO $
                               forkIO $
                               sendTransaction
                                 pool
                                 (s ^. eventDispatch)
                                 (s ^. zebraHost)
                                 (s ^. zebraPort)
                                 (s ^. network)
                                 (entityKey selAcc)
                                 bl
                                 (fs1 ^. sendAmt)
                                 (fs1 ^. sendTo)
                                 (fs1 ^. sendMemo)
                             BT.modify $ set msg "Preparing transaction..."
                             BT.modify $ set displayBox SendDisplay
                             BT.modify $ set dialogBox Blank
                           else do
                             BT.modify $ set msg "Invalid inputs"
                             BT.modify $ set displayBox MsgDisplay
                             BT.modify $ set dialogBox Blank
                       ev -> do
                         BT.zoom txForm $ do
                           handleFormEvent (BT.VtyEvent ev)
                           fs <- BT.gets formState
                           BT.modify $
                             setFieldValid
                               (isRecipientValid (fs ^. sendTo))
                               RecField
                   Blank -> do
                     case e of
                       V.EvKey (V.KChar '\t') [] -> focusRing %= F.focusNext
                       V.EvKey V.KEnter [] -> do
                         ns <- liftIO $ refreshTxs s
                         BT.put ns
                       V.EvKey (V.KChar 'q') [] -> M.halt
                       V.EvKey (V.KChar '?') [] -> BT.modify $ set helpBox True
                       V.EvKey (V.KChar 'n') [] ->
                         BT.modify $ set dialogBox AdName
                       V.EvKey (V.KChar 'v') [] ->
                         BT.modify $ set displayBox AddrDisplay
                       V.EvKey (V.KChar 'w') [] ->
                         BT.modify $ set dialogBox WSelect
                       V.EvKey (V.KChar 't') [] ->
                         BT.modify $ set displayBox TxDisplay
                       V.EvKey (V.KChar 'a') [] ->
                         BT.modify $ set dialogBox ASelect
                       V.EvKey (V.KChar 's') [] -> do
                         BT.modify $
                           set txForm $
                           mkSendForm (s ^. balance) (SendInput "" 0.0 "")
                         BT.modify $ set dialogBox SendTx
                       ev ->
                         case r of
                           Just AList ->
                             BT.zoom addresses $ L.handleListEvent ev
                           Just TList ->
                             BT.zoom transactions $ L.handleListEvent ev
                           _anyName -> return ()
  where
    printMsg :: String -> BT.EventM Name State ()
    printMsg s = BT.modify $ updateMsg s
    updateMsg :: String -> State -> State
    updateMsg = set msg
appEvent _ = return ()

theMap :: A.AttrMap
theMap =
  A.attrMap
    V.defAttr
    [ (L.listAttr, V.white `on` V.blue)
    , (L.listSelectedAttr, V.blue `on` V.white)
    , (customAttr, fg V.black)
    , (titleAttr, V.withStyle (fg V.brightGreen) V.bold)
    , (blinkAttr, style V.blink)
    , (focusedFormInputAttr, V.white `on` V.blue)
    , (invalidFormInputAttr, V.red `on` V.black)
    , (E.editAttr, V.white `on` V.blue)
    , (E.editFocusedAttr, V.blue `on` V.white)
    , (baseAttr, bg V.brightBlack)
    , (barDoneAttr, V.white `on` V.blue)
    , (barToDoAttr, V.white `on` V.black)
    ]

theApp :: M.App State Tick Name
theApp =
  M.App
    { M.appDraw = drawUI
    , M.appChooseCursor = M.showFirstCursor
    , M.appHandleEvent = appEvent
    , M.appStartEvent = return ()
    , M.appAttrMap = const theMap
    }

runZenithCLI :: Config -> IO ()
runZenithCLI config = do
  let host = c_zebraHost config
  let port = c_zebraPort config
  let dbFilePath = c_dbPath config
  pool <- runNoLoggingT $ initPool dbFilePath
  w <- try $ checkZebra host port :: IO (Either IOError ZebraGetInfo)
  case w of
    Right zebra -> do
      bc <-
        try $ checkBlockChain host port :: IO
          (Either IOError ZebraGetBlockChainInfo)
      case bc of
        Left e1 -> throwIO e1
        Right chainInfo -> do
          initDb dbFilePath
          walList <- getWallets pool $ zgb_net chainInfo
          accList <-
            if not (null walList)
              then runNoLoggingT $ getAccounts pool $ entityKey $ head walList
              else return []
          addrList <-
            if not (null accList)
              then runNoLoggingT $ getAddresses pool $ entityKey $ head accList
              else return []
          txList <-
            if not (null addrList)
              then getUserTx pool $ entityKey $ head addrList
              else return []
          let block =
                if not (null walList)
                  then zcashWalletLastSync $ entityVal $ head walList
                  else 0
          bal <-
            if not (null accList)
              then getBalance pool $ entityKey $ head accList
              else return 0
          eventChan <- BC.newBChan 10
          _ <-
            forkIO $
            forever $ do
              BC.writeBChan eventChan (TickVal 0.0)
              threadDelay 1000000
          let buildVty = VC.mkVty V.defaultConfig
          initialVty <- buildVty
          void $
            M.customMain initialVty buildVty (Just eventChan) theApp $
            State
              (zgb_net chainInfo)
              (L.list WList (Vec.fromList walList) 1)
              (L.list AcList (Vec.fromList accList) 0)
              (L.list AList (Vec.fromList addrList) 1)
              (L.list TList (Vec.fromList txList) 1)
              ("Start up Ok! Connected to Zebra " ++
               (T.unpack . zgi_build) zebra ++ " on port " ++ show port ++ ".")
              False
              (if null walList
                 then WName
                 else Blank)
              True
              (mkInputForm $ DialogInput "Main")
              (F.focusRing [AList, TList])
              (zgb_blocks chainInfo)
              dbFilePath
              host
              port
              MsgDisplay
              block
              bal
              1.0
              eventChan
              0
              (mkSendForm 0 $ SendInput "" 0.0 "")
    Left e -> do
      print $
        "No Zebra node available on port " <>
        show port <> ". Check your configuration."

refreshWallet :: State -> IO State
refreshWallet s = do
  pool <- runNoLoggingT $ initPool $ s ^. dbPath
  walList <- getWallets pool $ s ^. network
  (ix, selWallet) <-
    do case L.listSelectedElement $ s ^. wallets of
         Nothing -> do
           let fWall =
                 L.listSelectedElement $ L.listMoveToBeginning $ s ^. wallets
           case fWall of
             Nothing -> throw $ userError "Failed to select wallet"
             Just (j, w1) -> return (j, w1)
         Just (k, w) -> return (k, w)
  aL <- runNoLoggingT $ getAccounts pool $ entityKey selWallet
  let bl = zcashWalletLastSync $ entityVal selWallet
  addrL <-
    if not (null aL)
      then runNoLoggingT $ getAddresses pool $ entityKey $ head aL
      else return []
  bal <-
    if not (null aL)
      then getBalance pool $ entityKey $ head aL
      else return 0
  txL <-
    if not (null addrL)
      then getUserTx pool $ entityKey $ head addrL
      else return []
  let wL = L.listReplace (Vec.fromList walList) (Just ix) (s ^. wallets)
  let aL' = L.listReplace (Vec.fromList aL) (Just 0) (s ^. accounts)
  let addrL' = L.listReplace (Vec.fromList addrL) (Just 0) (s ^. addresses)
  let txL' = L.listReplace (Vec.fromList txL) (Just 0) (s ^. transactions)
  return $
    s & wallets .~ wL & accounts .~ aL' & syncBlock .~ bl & balance .~ bal &
    addresses .~
    addrL' &
    transactions .~
    txL' &
    msg .~
    "Switched to wallet: " ++
    T.unpack (zcashWalletName $ entityVal selWallet)

addNewWallet :: T.Text -> State -> IO State
addNewWallet n s = do
  sP <- generateWalletSeedPhrase
  pool <- runNoLoggingT $ initPool $ s ^. dbPath
  let bH = s ^. startBlock
  let netName = s ^. network
  r <- saveWallet pool $ ZcashWallet n (ZcashNetDB netName) (PhraseDB sP) bH 0
  case r of
    Nothing -> do
      return $ s & msg .~ ("Wallet already exists: " ++ T.unpack n)
    Just _ -> do
      wL <- getWallets pool netName
      let aL =
            L.listFindBy (\x -> zcashWalletName (entityVal x) == n) $
            L.listReplace (Vec.fromList wL) (Just 0) (s ^. wallets)
      return $ (s & wallets .~ aL) & msg .~ "Created new wallet: " ++ T.unpack n

addNewAccount :: T.Text -> State -> IO State
addNewAccount n s = do
  pool <- runNoLoggingT $ initPool $ s ^. dbPath
  selWallet <-
    do case L.listSelectedElement $ s ^. wallets of
         Nothing -> do
           let fWall =
                 L.listSelectedElement $ L.listMoveToBeginning $ s ^. wallets
           case fWall of
             Nothing -> throw $ userError "Failed to select wallet"
             Just (_j, w1) -> return w1
         Just (_k, w) -> return w
  aL' <- getMaxAccount pool (entityKey selWallet)
  zA <-
    try $ createZcashAccount n (aL' + 1) selWallet :: IO
      (Either IOError ZcashAccount)
  case zA of
    Left e -> return $ s & msg .~ ("Error: " ++ show e)
    Right zA' -> do
      r <- saveAccount pool zA'
      case r of
        Nothing ->
          return $ s & msg .~ ("Account already exists: " ++ T.unpack n)
        Just x -> do
          aL <- runNoLoggingT $ getAccounts pool (entityKey selWallet)
          let nL =
                L.listMoveToElement x $
                L.listReplace (Vec.fromList aL) (Just 0) (s ^. accounts)
          return $
            (s & accounts .~ nL) & msg .~ "Created new account: " ++ T.unpack n

refreshAccount :: State -> IO State
refreshAccount s = do
  pool <- runNoLoggingT $ initPool $ s ^. dbPath
  selAccount <-
    do case L.listSelectedElement $ s ^. accounts of
         Nothing -> do
           let fAcc =
                 L.listSelectedElement $ L.listMoveToBeginning $ s ^. accounts
           case fAcc of
             Nothing -> throw $ userError "Failed to select account"
             Just (_j, w1) -> return w1
         Just (_k, w) -> return w
  aL <- runNoLoggingT $ getAddresses pool $ entityKey selAccount
  bal <- getBalance pool $ entityKey selAccount
  let aL' = L.listReplace (Vec.fromList aL) (Just 0) (s ^. addresses)
  selAddress <-
    do case L.listSelectedElement aL' of
         Nothing -> do
           let fAdd = L.listSelectedElement $ L.listMoveToBeginning aL'
           return fAdd
         Just a2 -> return $ Just a2
  case selAddress of
    Nothing ->
      return $
      s & balance .~ bal & addresses .~ aL' & msg .~ "Switched to account: " ++
      T.unpack (zcashAccountName $ entityVal selAccount)
    Just (_i, a) -> do
      tList <- getUserTx pool $ entityKey a
      let tL' = L.listReplace (Vec.fromList tList) (Just 0) (s ^. transactions)
      return $
        s & balance .~ bal & addresses .~ aL' & transactions .~ tL' & msg .~
        "Switched to account: " ++
        T.unpack (zcashAccountName $ entityVal selAccount)

refreshTxs :: State -> IO State
refreshTxs s = do
  pool <- runNoLoggingT $ initPool $ s ^. dbPath
  selAddress <-
    do case L.listSelectedElement $ s ^. addresses of
         Nothing -> do
           let fAdd =
                 L.listSelectedElement $ L.listMoveToBeginning $ s ^. addresses
           return fAdd
         Just a2 -> return $ Just a2
  case selAddress of
    Nothing -> return s
    Just (_i, a) -> do
      tList <- getUserTx pool $ entityKey a
      let tL' = L.listReplace (Vec.fromList tList) (Just 0) (s ^. transactions)
      return $ s & transactions .~ tL'

addNewAddress :: T.Text -> Scope -> State -> IO State
addNewAddress n scope s = do
  pool <- runNoLoggingT $ initPool $ s ^. dbPath
  selAccount <-
    do case L.listSelectedElement $ s ^. accounts of
         Nothing -> do
           let fAcc =
                 L.listSelectedElement $ L.listMoveToBeginning $ s ^. accounts
           case fAcc of
             Nothing -> throw $ userError "Failed to select account"
             Just (_j, a1) -> return a1
         Just (_k, a) -> return a
  maxAddr <- getMaxAddress pool (entityKey selAccount) scope
  uA <-
    try $ createWalletAddress n (maxAddr + 1) (s ^. network) scope selAccount :: IO
      (Either IOError WalletAddress)
  case uA of
    Left e -> return $ s & msg .~ ("Error: " ++ show e)
    Right uA' -> do
      nAddr <- saveAddress pool uA'
      case nAddr of
        Nothing ->
          return $ s & msg .~ ("Address already exists: " ++ T.unpack n)
        Just x -> do
          addrL <- runNoLoggingT $ getAddresses pool (entityKey selAccount)
          let nL =
                L.listMoveToElement x $
                L.listReplace (Vec.fromList addrL) (Just 0) (s ^. addresses)
          return $
            (s & addresses .~ nL) & msg .~ "Created new address: " ++
            T.unpack n ++
            "(" ++
            T.unpack (showAddress $ walletAddressUAddress $ entityVal x) ++ ")"

sendTransaction ::
     ConnectionPool
  -> BC.BChan Tick
  -> T.Text
  -> Int
  -> ZcashNet
  -> ZcashAccountId
  -> Int
  -> Float
  -> T.Text
  -> T.Text
  -> IO ()
sendTransaction pool chan zHost zPort znet accId bl amt ua memo = do
  BC.writeBChan chan $ TickMsg "Preparing transaction..."
  outUA <- parseAddress ua
  res <-
    runFileLoggingT "zenith.log" $
    prepareTx pool zHost zPort znet accId bl amt outUA memo
  BC.writeBChan chan $ TickMsg "Transaction ready, sending to Zebra..."
  case res of
    Left e -> BC.writeBChan chan $ TickMsg $ show e
    Right rawTx -> do
      resp <-
        makeZebraCall
          zHost
          zPort
          "sendrawtransaction"
          [Data.Aeson.String $ toText rawTx]
      case resp of
        Left e1 -> BC.writeBChan chan $ TickMsg $ "Zebra error: " ++ show e1
        Right txId -> BC.writeBChan chan $ TickMsg $ "Tx ID: " ++ txId
  where
    parseAddress :: T.Text -> IO UnifiedAddress
    parseAddress a =
      case isValidUnifiedAddress (E.encodeUtf8 a) of
        Just a1 -> return a1
        Nothing ->
          case decodeSaplingAddress (E.encodeUtf8 a) of
            Just a2 ->
              return $
              UnifiedAddress znet Nothing (Just $ sa_receiver a2) Nothing
            Nothing ->
              case decodeTransparentAddress (E.encodeUtf8 a) of
                Just a3 ->
                  return $
                  UnifiedAddress znet Nothing Nothing (Just $ ta_receiver a3)
                Nothing -> throwIO $ userError "Incorrect address"