import {
  MetadataController,
  RelayController,
  UserRelaysType
} from 'controllers'
import { Filter, kinds } from 'nostr-tools'
import { useState } from 'react'
import { CommentEvent, ModDetails } from 'types'
import { useDidMount } from './useDidMount'

export const useComments = (mod: ModDetails) => {
  const [commentEvents, setCommentEvents] = useState<CommentEvent[]>([])

  useDidMount(async () => {
    const metadataController = await MetadataController.getInstance()

    const authorReadRelays = await metadataController.findUserRelays(
      mod.author,
      UserRelaysType.Read
    )

    const filter: Filter = {
      kinds: [kinds.ShortTextNote],
      '#a': [mod.aTag]
    }

    RelayController.getInstance().subscribeForEvents(
      filter,
      authorReadRelays,
      (event) => {
        setCommentEvents((prev) => {
          if (prev.find((e) => e.id === event.id)) {
            return [...prev]
          }

          return [event, ...prev]
        })
      }
    )
  })

  return {
    commentEvents,
    setCommentEvents
  }
}