extensions/msteams/src/attachments/payload.ts

export function buildMSTeamsMediaPayload(
  mediaList: Array<{ path: string; contentType?: string }>,
): {
  MediaPath?: string;
  MediaType?: string;
  MediaUrl?: string;
  MediaPaths?: string[];
  MediaUrls?: string[];
  MediaTypes?: string[];
} {
  const first = mediaList[0];
  const mediaPaths = mediaList.map((media) => media.path);
  const mediaTypes = mediaList.map((media) => media.contentType ?? "");
  return {
    MediaPath: first?.path,
    MediaType: first?.contentType,
    MediaUrl: first?.path,
    MediaPaths: mediaPaths.length > 0 ? mediaPaths : undefined,
    MediaUrls: mediaPaths.length > 0 ? mediaPaths : undefined,
    MediaTypes: mediaPaths.length > 0 ? mediaTypes : undefined,
  };
}