import type { IncomingMessage } from '../../engine/interfaces/whatsapp-engine.interface';

/** Engine-neutral inbound status/story, produced by {@link buildIncomingStatus} for `StatusStoreService.ingest`. */
export interface IncomingStatus {
  waStatusId: string;
  contactJid: string;
  contactName?: string;
  contactPushName?: string;
  type: 'text' | 'image' | 'video' | 'voice';
  caption?: string;
  backgroundColor?: string;
  font?: number;
  media?: { mimetype: string; data?: string; omitted?: boolean; sizeBytes?: number };
  postedAt: number;
}

/**
 * Collapse the rich MessageType to the status union.
 *
 * `voice` is listed explicitly because both engines map a PTT message to it, and without that an
 * incoming voice status would be stored as `text` — the bucket everything non-image/video fell into.
 */
function statusType(t: string): 'text' | 'image' | 'video' | 'voice' {
  return t === 'image' || t === 'video' || t === 'voice' ? t : 'text';
}

/**
 * Build a neutral IncomingStatus from an inbound status-broadcast message, or null if `msg` is not a
 * usable status: not a status broadcast, missing an id, or the resolved poster is empty/the
 * `status@broadcast` pseudo-JID itself. For a status broadcast the adapter puts the actual poster in
 * `author` (`from` is the shared `status@broadcast` channel), falling back to `from` for engines that
 * don't set `author`.
 */
export function buildIncomingStatus(msg: IncomingMessage): IncomingStatus | null {
  if (!msg.isStatusBroadcast || !msg.id) return null;
  const contactJid = msg.author ?? msg.from;
  if (!contactJid || contactJid === 'status@broadcast') return null;
  return {
    waStatusId: msg.id,
    contactJid,
    contactName: msg.contact?.name,
    contactPushName: msg.contact?.pushName,
    type: statusType(msg.type),
    caption: msg.body || undefined,
    backgroundColor: msg.backgroundColor,
    font: msg.font,
    media: msg.media
      ? {
          mimetype: msg.media.mimetype,
          data: msg.media.data,
          omitted: msg.media.omitted,
          sizeBytes: msg.media.sizeBytes,
        }
      : undefined,
    postedAt: msg.timestamp * 1000,
  };
}