import { APIError, APIHandler } from 'api/helpers/endpoint'
import { type JSONContent } from '@tiptap/core'
import { getPrivateUser, getUser } from 'shared/utils'
import {
  createSupabaseDirectClient,
  SupabaseDirectClient,
} from 'shared/supabase/init'
import { getNotificationDestinationsForUser } from 'common/user-notification-preferences'
import { Notification } from 'common/notifications'
import { insertNotificationToSupabase } from 'shared/supabase/notifications'
import { User } from 'common/user'
import { richTextToString } from 'common/util/parse'
import * as crypto from 'crypto'
import { sendNewEndorsementEmail } from 'email/functions/helpers'
import { type Row } from 'common/supabase/utils'
import { broadcastUpdatedComment } from 'shared/websockets/helpers'
import { convertComment } from 'common/supabase/comment'

export const MAX_COMMENT_JSON_LENGTH = 20000

export const createComment: APIHandler<'create-comment'> = async (
  { userId, content: submittedContent, replyToCommentId },
  auth
) => {
  const { creator, content } = await validateComment(
    userId,
    auth.uid,
    submittedContent
  )

  const onUser = await getUser(userId)
  if (!onUser) throw new APIError(404, 'User not found')

  const pg = createSupabaseDirectClient()
  const comment = await pg.one<Row<'profile_comments'>>(
    `insert into profile_comments (user_id, user_name, user_username, user_avatar_url, on_user_id, content, reply_to_comment_id)
        values ($1, $2, $3, $4, $5, $6, $7) returning *`,
    [
      creator.id,
      creator.name,
      creator.username,
      creator.avatarUrl,
      userId,
      content,
      replyToCommentId,
    ]
  )
  if (onUser.id !== creator.id)
    await createNewCommentOnProfileNotification(
      onUser,
      creator,
      richTextToString(content),
      comment.id,
      pg
    )

  broadcastUpdatedComment(convertComment(comment))

  return { status: 'success' }
}

const validateComment = async (
  userId: string,
  creatorId: string,
  content: JSONContent
) => {
  const creator = await getUser(creatorId)

  if (!creator) throw new APIError(401, 'Your account was not found')
  if (creator.isBannedFromPosting) throw new APIError(403, 'You are banned')

  const otherUser = await getPrivateUser(userId)
  if (!otherUser) throw new APIError(404, 'Other user not found')
  if (otherUser.blockedUserIds.includes(creatorId)) {
    throw new APIError(404, 'User has blocked you')
  }

  if (JSON.stringify(content).length > MAX_COMMENT_JSON_LENGTH) {
    throw new APIError(
      400,
      `Comment is too long; should be less than ${MAX_COMMENT_JSON_LENGTH} as a JSON string.`
    )
  }
  return { content, creator }
}

const createNewCommentOnProfileNotification = async (
  onUser: User,
  creator: User,
  sourceText: string,
  commentId: number,
  pg: SupabaseDirectClient
) => {
  const privateUser = await getPrivateUser(onUser.id)
  if (!privateUser) return
  const id = crypto.randomUUID()
  const reason = 'new_endorsement'
  const { sendToBrowser, sendToMobile, sendToEmail } =
    getNotificationDestinationsForUser(privateUser, reason)
  const notification: Notification = {
    id,
    userId: privateUser.id,
    reason,
    createdTime: Date.now(),
    isSeen: false,
    sourceId: commentId.toString(),
    sourceType: 'comment_on_profile',
    sourceUpdateType: 'created',
    sourceUserName: creator.name,
    sourceUserUsername: creator.username,
    sourceUserAvatarUrl: creator.avatarUrl,
    sourceText: sourceText,
    sourceSlug: onUser.username,
  }
  if (sendToBrowser) {
    await insertNotificationToSupabase(notification, pg)
  }
  if (sendToMobile) {
    // await createPushNotification(
    //   notification,
    //   privateUser,
    //   `${creator.name} commented on your profile`,
    //   sourceText
    // )
  }
  if (sendToEmail) {
    await sendNewEndorsementEmail(privateUser, creator, onUser, sourceText)
  }
}