import {
  AppBar as AppBarMui,
  Box,
  Button,
  Container,
  Menu,
  MenuItem,
  Toolbar,
  Typography
} from '@mui/material'

import { useEffect, useState } from 'react'
import { useDispatch, useSelector } from 'react-redux'
import {
  setAuthState,
  setMetadataEvent,
  userLogOutAction
} from '../../store/actions'
import { State } from '../../store/rootReducer'
import { Dispatch } from '../../store/store'
import Username from '../username'

import { Link, useNavigate } from 'react-router-dom'
import { MetadataController, NostrController } from '../../controllers'
import {
  appPublicRoutes,
  appPrivateRoutes,
  getProfileRoute
} from '../../routes'
import {
  clearAuthToken,
  hexToNpub,
  saveNsecBunkerDelegatedKey,
  shorten
} from '../../utils'
import styles from './style.module.scss'
import { setUserRobotImage } from '../../store/userRobotImage/action'

const metadataController = new MetadataController()

export const AppBar = () => {
  const navigate = useNavigate()

  const dispatch: Dispatch = useDispatch()

  const [username, setUsername] = useState('')
  const [userAvatar, setUserAvatar] = useState('')
  const [anchorElUser, setAnchorElUser] = useState<null | HTMLElement>(null)

  const authState = useSelector((state: State) => state.auth)
  const metadataState = useSelector((state: State) => state.metadata)
  const userRobotImage = useSelector((state: State) => state.userRobotImage)

  useEffect(() => {
    if (metadataState) {
      if (metadataState.content) {
        const { picture, display_name, name } = JSON.parse(
          metadataState.content
        )

        if (picture || userRobotImage) {
          setUserAvatar(picture || userRobotImage)
        }

        const npub = authState.usersPubkey
          ? hexToNpub(authState.usersPubkey)
          : ''

        setUsername(shorten(display_name || name || npub, 7))
      } else {
        setUserAvatar(userRobotImage || '')
        setUsername('')
      }
    }
  }, [metadataState, userRobotImage, authState.usersPubkey])

  const handleOpenUserMenu = (event: React.MouseEvent<HTMLElement>) => {
    setAnchorElUser(event.currentTarget)
  }

  const handleCloseUserMenu = () => {
    setAnchorElUser(null)
  }

  const handleProfile = () => {
    const hexKey = authState?.usersPubkey
    if (hexKey) navigate(getProfileRoute(hexKey))

    setAnchorElUser(null)
  }

  const handleLogout = () => {
    handleCloseUserMenu()
    dispatch(
      setAuthState({
        keyPair: undefined,
        loggedIn: false,
        usersPubkey: undefined,
        loginMethod: undefined,
        nsecBunkerPubkey: undefined
      })
    )
    dispatch(setMetadataEvent(metadataController.getEmptyMetadataEvent()))
    dispatch(setUserRobotImage(null))

    // clear authToken saved in local storage
    clearAuthToken()

    dispatch(userLogOutAction())

    // update nsecBunker delegated key after logout
    const nostrController = NostrController.getInstance()
    const newDelegatedKey = nostrController.generateDelegatedKey()
    saveNsecBunkerDelegatedKey(newDelegatedKey)

    navigate('/')
  }
  const isAuthenticated = authState?.loggedIn === true

  return (
    <AppBarMui
      position="fixed"
      className={styles.AppBar}
      sx={{
        boxShadow: 'none'
      }}
    >
      <Container maxWidth="xl" disableGutters={true}>
        <Toolbar className={styles.toolbar}>
          <Box className={styles.logoWrapper}>
            <img src="/logo.png" alt="Logo" onClick={() => navigate('/')} />
          </Box>

          <Box className={styles.rightSideBox}>
            {!isAuthenticated && (
              <Button
                onClick={() => {
                  navigate(appPublicRoutes.login)
                }}
                variant="contained"
              >
                LOGIN
              </Button>
            )}

            {isAuthenticated && (
              <>
                <Username
                  username={username}
                  avatarContent={userAvatar}
                  handleClick={handleOpenUserMenu}
                />
                <Menu
                  id="menu-appbar"
                  anchorEl={anchorElUser}
                  anchorOrigin={{
                    vertical: 'bottom',
                    horizontal: 'center'
                  }}
                  keepMounted
                  transformOrigin={{
                    vertical: 'top',
                    horizontal: 'center'
                  }}
                  open={!!anchorElUser}
                  onClose={handleCloseUserMenu}
                >
                  <MenuItem
                    sx={{
                      justifyContent: 'center',
                      display: { md: 'none' }
                    }}
                  >
                    <Typography variant="h6">{username}</Typography>
                  </MenuItem>
                  <MenuItem
                    onClick={handleProfile}
                    sx={{
                      justifyContent: 'center'
                    }}
                  >
                    Profile
                  </MenuItem>
                  <MenuItem
                    onClick={() => {
                      setAnchorElUser(null)

                      navigate(appPrivateRoutes.settings)
                    }}
                    sx={{
                      justifyContent: 'center'
                    }}
                  >
                    Settings
                  </MenuItem>
                  <MenuItem
                    onClick={() => {
                      setAnchorElUser(null)

                      navigate(appPublicRoutes.verify)
                    }}
                    sx={{
                      justifyContent: 'center'
                    }}
                  >
                    Verify
                  </MenuItem>
                  <Link
                    to={appPublicRoutes.source}
                    target="_blank"
                    style={{ color: 'inherit', textDecoration: 'inherit' }}
                  >
                    <MenuItem
                      sx={{
                        justifyContent: 'center'
                      }}
                    >
                      Source
                    </MenuItem>
                  </Link>
                  <MenuItem
                    onClick={handleLogout}
                    sx={{
                      justifyContent: 'center'
                    }}
                  >
                    Logout
                  </MenuItem>
                </Menu>
              </>
            )}
          </Box>
        </Toolbar>
      </Container>
    </AppBarMui>
  )
}