import { useGlobSetting } from '@jeesite/core/hooks/setting';
import { toLocalMapUrl } from '@jeesite/core/utils/map/offlineMap';

const { ctxPath } = useGlobSetting();

const ABSOLUTE_IMAGE_RE = /^(data:image\/|https?:\/\/|blob:|file:|localmap:|\/\/)/i;
const RAW_BASE64_RE = /^[A-Za-z0-9+/=\s]+$/;
const WINDOWS_ABSOLUTE_PATH_RE = /^[A-Za-z]:[\\/]/;
const WINDOWS_UNC_PATH_RE = /^\\\\[^\\]+\\[^\\]+/;

const appendCtxPath = (path: string) => {
  const normalizedPath = path.startsWith('/') ? path : `/${path}`;
  return ctxPath ? `${ctxPath}${normalizedPath}` : normalizedPath;
};

export const normalizeAvatarSrc = (value?: string | null) => {
  const source = String(value ?? '').trim();
  if (!source) return '';
  if (/^file:\/\//i.test(source)) return toLocalMapUrl(source);
  if (ABSOLUTE_IMAGE_RE.test(source)) return source;
  if (WINDOWS_ABSOLUTE_PATH_RE.test(source) || WINDOWS_UNC_PATH_RE.test(source)) {
    return toLocalMapUrl(source);
  }

  if (source.startsWith('/ctxPath/')) {
    return appendCtxPath(source.replace(/^\/ctxPath\/?/i, ''));
  }

  if (source.startsWith('ctxPath/')) {
    return appendCtxPath(source.replace(/^ctxPath\/?/i, ''));
  }

  const isLikelyBase64 =
    RAW_BASE64_RE.test(source) &&
    !source.startsWith('/') &&
    !source.includes('.') &&
    !source.includes('?') &&
    !source.includes('&');

  if (isLikelyBase64) {
    return `data:image/png;base64,${source}`;
  }

  return appendCtxPath(source);
};