import client from '@anticrm/client'
import contact from '@anticrm/contact'
import core, { Client, setCurrentAccount, Version } from '@anticrm/core'
import login from '@anticrm/login'
import { getMetadata, getResource } from '@anticrm/platform'
import { fetchMetadataLocalStorage, getCurrentLocation, navigate, setMetadataLocalStorage } from '@anticrm/ui'
import presentation from './plugin'

export let versionError: string | undefined = ''

export async function connect (title: string): Promise<Client | undefined> {
  const token = fetchMetadataLocalStorage(login.metadata.LoginToken)
  const endpoint = fetchMetadataLocalStorage(login.metadata.LoginEndpoint)
  const email = fetchMetadataLocalStorage(login.metadata.LoginEmail)

  if (token === null || endpoint === null || email === null) {
    navigate({
      path: [login.component.LoginApp],
      query: { navigateUrl: encodeURIComponent(JSON.stringify(getCurrentLocation())) }
    })
    return
  }

  const getClient = await getResource(client.function.GetClient)
  const instance = await getClient(
    token,
    endpoint,
    () => {
      location.reload()
    },
    () => {
      clearMetadata()
      navigate({
        path: [login.component.LoginApp],
        query: {}
      })
    }
  )
  console.log('logging in as', email)

  const me = await instance.findOne(contact.class.EmployeeAccount, { email })
  if (me !== undefined) {
    console.log('login: employee account', me)
    setCurrentAccount(me)
  } else {
    console.error('WARNING: no employee account found.')
    clearMetadata()
    navigate({
      path: [login.component.LoginApp],
      query: { navigateUrl: encodeURIComponent(JSON.stringify(getCurrentLocation())) }
    })
    return
  }

  try {
    const version = await instance.findOne<Version>(core.class.Version, {})
    console.log('Model version', version)

    const requirdVersion = getMetadata(presentation.metadata.RequiredVersion)
    if (requirdVersion !== undefined) {
      console.log('checking min model version', requirdVersion)
      const versionStr = `${version?.major as number}.${version?.minor as number}.${version?.patch as number}`

      if (version === undefined || requirdVersion !== versionStr) {
        versionError = `${versionStr} => ${requirdVersion}`
        return undefined
      }
    }
  } catch (err: any) {
    console.log(err)
    const requirdVersion = getMetadata(presentation.metadata.RequiredVersion)
    console.log('checking min model version', requirdVersion)
    if (requirdVersion !== undefined) {
      versionError = `'unknown' => ${requirdVersion}`
      return undefined
    }
  }

  // Update window title
  document.title = [fetchMetadataLocalStorage(login.metadata.CurrentWorkspace), title].filter((it) => it).join(' - ')

  return instance
}
function clearMetadata (): void {
  setMetadataLocalStorage(login.metadata.LoginToken, null)
  setMetadataLocalStorage(login.metadata.LoginEndpoint, null)
  setMetadataLocalStorage(login.metadata.LoginEmail, null)
  setMetadataLocalStorage(login.metadata.CurrentWorkspace, null)
}