/**
 * llmindex.io — canonical task/subject domains (v1)
 * Author:  Simon-Pierre Boucher
 * Contact: contact@spboucher.ai
 * License: Proprietary — © Simon-Pierre Boucher, all rights reserved
 */

export const DOMAINS = [
  'code',
  'math',
  'reasoning',
  'agentic',
  'terminal',
  'writing',
  'knowledge',
  'multilingual',
  'instruction_following',
  'safety_refusal_quality',
  'svg_design',
  'vision_ocr',
] as const;

export type Domain = (typeof DOMAINS)[number];

export const GLOBAL_DOMAIN = 'global' as const;

/** Domains scored via graded items + IRT (vs. pairwise duels + Bradley-Terry). */
export const IRT_DOMAINS: readonly Domain[] = [
  'code',
  'math',
  'reasoning',
  'agentic',
  'terminal',
  'knowledge',
  'multilingual',
  'instruction_following',
  'vision_ocr',
];

/** Domains requiring image input — only run against multimodal models. */
export const VISION_DOMAINS: readonly Domain[] = ['vision_ocr'];

/** Open-ended domains scored via LLM-judged pairwise duels (Bradley-Terry). */
export const DUEL_DOMAINS: readonly Domain[] = ['writing', 'safety_refusal_quality', 'svg_design'];

export function isDomain(value: string): value is Domain {
  return (DOMAINS as readonly string[]).includes(value);
}