export interface AdvisorSuggestion {
  topic: string;
  suggestions: string[];
  reminder: string;
}

const DEFAULT_MAPPING: Record<string, string[]> = {
  bug: ["/bug-diagnose", "/risk-fix", "pi-review-mode"],
  build: ["/preflight", "/bug-implement", "pi-review-mode"],
  docs: ["pi-docparser", "pi-mermaid", "/preflight"],
  design: ["/review-arch", "pi-mermaid"],
};

export function suggestInstalledResources(topic: string, available: string[] = [], mapping: Record<string, string[]> = DEFAULT_MAPPING): AdvisorSuggestion {
  const normalized = topic.toLowerCase();
  const bucket = normalized.includes('bug') ? 'bug'
    : normalized.includes('build') ? 'build'
    : normalized.includes('doc') ? 'docs'
    : normalized.includes('design') ? 'design'
    : 'bug';
  const wanted = mapping[bucket] || [];
  const suggestions = wanted.filter((item) => available.length === 0 || available.includes(item));
  return {
    topic: bucket,
    suggestions,
    reminder: 'Prefer installed prompts/extensions before installing new tools.',
  };
}