import type { CompanyPortabilityFileEntry } from "@paperclipai/shared";

const contentTypeByExtension: Record<string, string> = {
  ".gif": "image/gif",
  ".jpeg": "image/jpeg",
  ".jpg": "image/jpeg",
  ".png": "image/png",
  ".svg": "image/svg+xml",
  ".webp": "image/webp",
};

export function getPortableFileText(entry: CompanyPortabilityFileEntry | null | undefined) {
  return typeof entry === "string" ? entry : null;
}

export function getPortableFileContentType(
  filePath: string,
  entry: CompanyPortabilityFileEntry | null | undefined,
) {
  if (entry && typeof entry === "object" && entry.contentType) return entry.contentType;
  const extensionIndex = filePath.toLowerCase().lastIndexOf(".");
  if (extensionIndex === -1) return null;
  return contentTypeByExtension[filePath.toLowerCase().slice(extensionIndex)] ?? null;
}

export function getPortableFileDataUrl(
  filePath: string,
  entry: CompanyPortabilityFileEntry | null | undefined,
) {
  if (!entry || typeof entry === "string") return null;
  const contentType = getPortableFileContentType(filePath, entry) ?? "application/octet-stream";
  return `data:${contentType};base64,${entry.data}`;
}

export function isPortableImageFile(
  filePath: string,
  entry: CompanyPortabilityFileEntry | null | undefined,
) {
  const contentType = getPortableFileContentType(filePath, entry);
  return typeof contentType === "string" && contentType.startsWith("image/");
}