import type { WebSearchResult } from '@/lib/types/web-search';

/**
 * Format search results into a markdown context block for LLM prompts.
 */
export function formatSearchResultsAsContext(result: WebSearchResult): string {
  if (!result.answer && result.sources.length === 0) {
    return '';
  }

  const lines: string[] = [];

  if (result.answer) {
    lines.push(result.answer);
    lines.push('');
  }

  if (result.sources.length > 0) {
    lines.push('Sources:');
    for (const src of result.sources) {
      lines.push(`- [${src.title}](${src.url}): ${src.content.slice(0, 200)}`);
    }
  }

  return lines.join('\n');
}