import fs from 'node:fs';
import path from 'node:path';
import { backfillMindspaceSeoGeoHtml } from './mindspace-geo-backfill.mjs';

function isPublicHtmlPath(value) {
  const normalized = String(value ?? '').replace(/\\/g, '/');
  return /(?:^|\/)public\/[^/]+\.html$/i.test(normalized);
}

export function prepareMindspacePublicHtmlForDisk(html, { htmlFilePath = '' } = {}) {
  const source = String(html ?? '');
  const filePath = String(htmlFilePath ?? '');
  if (!source.trim()) return source;
  if (filePath && !isPublicHtmlPath(filePath)) return source;
  if (!filePath && !/<html[\s>]/i.test(source)) return source;
  return backfillMindspaceSeoGeoHtml(source, {
    htmlFilePath: filePath,
    fixWarnings: true,
  });
}

export function materializeMindspaceSeoGeoOnDisk(
  absolutePath,
  {
    forceGeo = false,
    fixWarnings = true,
  } = {},
) {
  const filePath = path.resolve(String(absolutePath ?? ''));
  if (!filePath || !/\.html$/i.test(filePath)) {
    return { changed: false, html: '' };
  }
  const before = fs.readFileSync(filePath, 'utf8');
  const after = backfillMindspaceSeoGeoHtml(before, {
    htmlFilePath: filePath,
    forceGeo,
    fixWarnings,
  });
  if (after === before) {
    return { changed: false, html: before };
  }
  fs.writeFileSync(filePath, after, 'utf8');
  return { changed: true, html: after };
}