import type { Channel } from 'stream-chat'

/**
 * Restores pending messages into the channel's visible message list so they
 * appear as if they were already sent.
 *
 * Stream's pending-messages feature removes messages from the channel view
 * once client state is lost (e.g. page refresh). This function works around
 * that limitation by reading `channel.state.pending_messages` and
 * re-inserting them via `channel.state.addMessageSorted`.
 */
export function restorePendingMessages(channel: Channel) {
  const pendingMessages = channel.state.pending_messages
  if (!pendingMessages?.length) return

  for (const pending of pendingMessages) {
    channel.state.addMessageSorted(pending.message)
  }
}