import 'lib/sentry' // must be near top
import 'view/icons'

import React, {useEffect, useState} from 'react'
import {KeyboardProvider} from 'react-native-keyboard-controller'
import {RootSiblingParent} from 'react-native-root-siblings'
import {SafeAreaProvider} from 'react-native-safe-area-context'
import {msg} from '@lingui/macro'
import {useLingui} from '@lingui/react'

import {useIntentHandler} from '#/lib/hooks/useIntentHandler'
import {QueryProvider} from '#/lib/react-query'
import {Provider as StatsigProvider} from '#/lib/statsig/statsig'
import {ThemeProvider} from '#/lib/ThemeContext'
import I18nProvider from '#/locale/i18nProvider'
import {logger} from '#/logger'
import {Provider as A11yProvider} from '#/state/a11y'
import {Provider as MutedThreadsProvider} from '#/state/cache/thread-mutes'
import {Provider as DialogStateProvider} from '#/state/dialogs'
import {listenSessionDropped} from '#/state/events'
import {Provider as InvitesStateProvider} from '#/state/invites'
import {Provider as LightboxStateProvider} from '#/state/lightbox'
import {MessagesProvider} from '#/state/messages'
import {Provider as ModalStateProvider} from '#/state/modals'
import {init as initPersistedState} from '#/state/persisted'
import {Provider as PrefsStateProvider} from '#/state/preferences'
import {Provider as LabelDefsProvider} from '#/state/preferences/label-defs'
import {Provider as ModerationOptsProvider} from '#/state/preferences/moderation-opts'
import {Provider as UnreadNotifsProvider} from '#/state/queries/notifications/unread'
import {
  Provider as SessionProvider,
  SessionAccount,
  useSession,
  useSessionApi,
} from '#/state/session'
import {readLastActiveAccount} from '#/state/session/util'
import {Provider as ShellStateProvider} from '#/state/shell'
import {Provider as LoggedOutViewProvider} from '#/state/shell/logged-out'
import {Provider as ProgressGuideProvider} from '#/state/shell/progress-guide'
import {Provider as SelectedFeedProvider} from '#/state/shell/selected-feed'
import {Provider as StarterPackProvider} from '#/state/shell/starter-pack'
import {Provider as HiddenRepliesProvider} from '#/state/threadgate-hidden-replies'
import {ActiveVideoProvider} from '#/view/com/util/post-embeds/ActiveVideoContext'
import * as Toast from '#/view/com/util/Toast'
import {ToastContainer} from '#/view/com/util/Toast.web'
import {Shell} from '#/view/shell/index'
import {ThemeProvider as Alf} from '#/alf'
import {useColorModeTheme} from '#/alf/util/useColorModeTheme'
import {useStarterPackEntry} from '#/components/hooks/useStarterPackEntry'
import {Provider as PortalProvider} from '#/components/Portal'
import {Provider as TourProvider} from '#/tours'
import {BackgroundNotificationPreferencesProvider} from '../modules/expo-background-notification-handler/src/BackgroundNotificationHandlerProvider'

function InnerApp() {
  const [isReady, setIsReady] = React.useState(false)
  const {currentAccount} = useSession()
  const {resumeSession} = useSessionApi()
  const theme = useColorModeTheme()
  const {_} = useLingui()
  useIntentHandler()
  const hasCheckedReferrer = useStarterPackEntry()

  // init
  useEffect(() => {
    async function onLaunch(account?: SessionAccount) {
      try {
        if (account) {
          await resumeSession(account)
        }
      } catch (e) {
        logger.error(`session: resumeSession failed`, {message: e})
      } finally {
        setIsReady(true)
      }
    }
    const account = readLastActiveAccount()
    onLaunch(account)
  }, [resumeSession])

  useEffect(() => {
    return listenSessionDropped(() => {
      Toast.show(
        _(msg`Sorry! Your session expired. Please log in again.`),
        'info',
      )
    })
  }, [_])

  // wait for session to resume
  if (!isReady || !hasCheckedReferrer) return null

  return (
    <KeyboardProvider enabled={false}>
      <Alf theme={theme}>
        <ThemeProvider theme={theme}>
          <RootSiblingParent>
            <ActiveVideoProvider>
              <React.Fragment
                // Resets the entire tree below when it changes:
                key={currentAccount?.did}>
                <QueryProvider currentDid={currentAccount?.did}>
                  <StatsigProvider>
                    <MessagesProvider>
                      {/* LabelDefsProvider MUST come before ModerationOptsProvider */}
                      <LabelDefsProvider>
                        <ModerationOptsProvider>
                          <LoggedOutViewProvider>
                            <SelectedFeedProvider>
                              <HiddenRepliesProvider>
                                <UnreadNotifsProvider>
                                  <BackgroundNotificationPreferencesProvider>
                                    <MutedThreadsProvider>
                                      <SafeAreaProvider>
                                        <TourProvider>
                                          <ProgressGuideProvider>
                                            <Shell />
                                          </ProgressGuideProvider>
                                        </TourProvider>
                                      </SafeAreaProvider>
                                    </MutedThreadsProvider>
                                  </BackgroundNotificationPreferencesProvider>
                                </UnreadNotifsProvider>
                              </HiddenRepliesProvider>
                            </SelectedFeedProvider>
                          </LoggedOutViewProvider>
                        </ModerationOptsProvider>
                      </LabelDefsProvider>
                    </MessagesProvider>
                  </StatsigProvider>
                </QueryProvider>
              </React.Fragment>
              <ToastContainer />
            </ActiveVideoProvider>
          </RootSiblingParent>
        </ThemeProvider>
      </Alf>
    </KeyboardProvider>
  )
}

function App() {
  const [isReady, setReady] = useState(false)

  React.useEffect(() => {
    initPersistedState().then(() => setReady(true))
  }, [])

  if (!isReady) {
    return null
  }

  /*
   * NOTE: only nothing here can depend on other data or session state, since
   * that is set up in the InnerApp component above.
   */
  return (
    <A11yProvider>
      <SessionProvider>
        <ShellStateProvider>
          <PrefsStateProvider>
            <InvitesStateProvider>
              <ModalStateProvider>
                <DialogStateProvider>
                  <LightboxStateProvider>
                    <I18nProvider>
                      <PortalProvider>
                        <StarterPackProvider>
                          <InnerApp />
                        </StarterPackProvider>
                      </PortalProvider>
                    </I18nProvider>
                  </LightboxStateProvider>
                </DialogStateProvider>
              </ModalStateProvider>
            </InvitesStateProvider>
          </PrefsStateProvider>
        </ShellStateProvider>
      </SessionProvider>
    </A11yProvider>
  )
}

export default App
