import { LANGUAGE_VERSION } from './LanguageScene';
import { validateJevDecision, type AgentVersion, type JevDecision, type Skill } from './protocol';

export const QUALITY_POINTS = { poor: 0, partial: 25, good: 75, excellent: 100 } as const;
const REASONS = {
  unsafe: '检测到不安全因素',
  insufficient_evidence: '当前阶段证据不足',
  tracking_error: '动作跟踪或对齐异常',
  verified_progress: '模型报告已有进展，但仍拒绝继续',
} as const;
function stopReason(decision: JevDecision): string {
  const reason = decision.reason;
  if (reason && reason !== 'none') return REASONS[reason];
  return decision.noul === 'uncertain'
    ? '模型无法确认下一技能安全，未提供具体原因'
    : '模型拒绝继续，未提供具体原因';
}
/** Supervisory advice can veto but cannot grant physical authority. */
export class TaskSupervisor {
  last?: JevDecision;
  get qualityScore(): number | undefined {
    const score = this.last?.score;
    return score && score !== 'unavailable' ? QUALITY_POINTS[score] : undefined;
  }
  inspect(
    value: unknown,
    candidates: readonly (Skill | 'stop')[],
    version: AgentVersion,
    secure: boolean,
  ): JevDecision {
    const decision = validateJevDecision(value, candidates, version);
    this.last = decision;
    if (version === LANGUAGE_VERSION && decision.noul !== 'allow')
      throw new Error(`Noul 拦截（${decision.noul}）：${stopReason(decision)}`);
    if (decision.choice === 'stop' || decision.recovery === 'stop')
      throw new Error(`Jev 请求安全停止：${stopReason(decision)}`);
    if (decision.grasp === 'secure' && !secure) throw new Error('Jev 抓持判断与本地物理证据矛盾');
    if (
      ['carry', 'stop-base'].includes(decision.choice) &&
      (decision.grasp !== 'secure' || !secure)
    )
      throw new Error('搬运前未取得一致抓持证据');
    return decision;
  }
}