import React, {memo, useMemo, useState} from 'react'
import {
  Pressable,
  type PressableProps,
  type StyleProp,
  type ViewStyle,
} from 'react-native'
import {
  AppBskyFeedDefs,
  AppBskyFeedPost,
  AppBskyFeedThreadgate,
  RichText as RichTextAPI,
} from '@atproto/api'
import {msg} from '@lingui/macro'
import {useLingui} from '@lingui/react'

import {useTheme} from '#/lib/ThemeContext'
import {Shadow} from '#/state/cache/post-shadow'
import {atoms as a, useTheme as useAlf} from '#/alf'
import {DotGrid_Stroke2_Corner0_Rounded as DotsHorizontal} from '#/components/icons/DotGrid'
import {useMenuControl} from '#/components/Menu'
import * as Menu from '#/components/Menu'
import {EventStopper} from '../EventStopper'
import {PostDropdownMenuItems} from './PostDropdownBtnMenuItems'

let PostDropdownBtn = ({
  testID,
  post,
  postFeedContext,
  record,
  richText,
  style,
  hitSlop,
  size,
  timestamp,
  threadgateRecord,
}: {
  testID: string
  post: Shadow<AppBskyFeedDefs.PostView>
  postFeedContext: string | undefined
  record: AppBskyFeedPost.Record
  richText: RichTextAPI
  style?: StyleProp<ViewStyle>
  hitSlop?: PressableProps['hitSlop']
  size?: 'lg' | 'md' | 'sm'
  timestamp: string
  threadgateRecord?: AppBskyFeedThreadgate.Record
}): React.ReactNode => {
  const theme = useTheme()
  const alf = useAlf()
  const {_} = useLingui()
  const defaultCtrlColor = theme.palette.default.postCtrl
  const menuControl = useMenuControl()
  const [hasBeenOpen, setHasBeenOpen] = useState(false)
  const lazyMenuControl = useMemo(
    () => ({
      ...menuControl,
      open() {
        setHasBeenOpen(true)
        // HACK. We need the state update to be flushed by the time
        // menuControl.open() fires but RN doesn't expose flushSync.
        setTimeout(menuControl.open)
      },
    }),
    [menuControl, setHasBeenOpen],
  )
  return (
    <EventStopper onKeyDown={false}>
      <Menu.Root control={lazyMenuControl}>
        <Menu.Trigger label={_(msg`Open post options menu`)}>
          {({props, state}) => {
            return (
              <Pressable
                {...props}
                hitSlop={hitSlop}
                testID={testID}
                style={[
                  style,
                  a.rounded_full,
                  (state.hovered || state.pressed) && [
                    alf.atoms.bg_contrast_25,
                  ],
                ]}>
                <DotsHorizontal
                  fill={defaultCtrlColor}
                  style={{pointerEvents: 'none'}}
                  size={size}
                />
              </Pressable>
            )
          }}
        </Menu.Trigger>
        {hasBeenOpen && (
          // Lazily initialized. Once mounted, they stay mounted.
          <PostDropdownMenuItems
            testID={testID}
            post={post}
            postFeedContext={postFeedContext}
            record={record}
            richText={richText}
            timestamp={timestamp}
            threadgateRecord={threadgateRecord}
          />
        )}
      </Menu.Root>
    </EventStopper>
  )
}

PostDropdownBtn = memo(PostDropdownBtn)
export {PostDropdownBtn}