/** 任务复杂度：Hard / Medium / Easy（对应旧 todo skill 的 tier 1/2/3） */
export type Complexity = 'hard' | 'medium' | 'easy';

export const COMPLEXITY_ORDER: Record<Complexity, number> = { hard: 1, medium: 2, easy: 3 };
export const COMPLEXITY_LABEL: Record<Complexity, string> = { hard: 'Hard', medium: 'Medium', easy: 'Easy' };

/** 旧 todo skill 的 tier(1/2/3) ↔ 复杂度，用于迁移导入 */
export const TIER_TO_COMPLEXITY: Record<number, Complexity> = { 1: 'hard', 2: 'medium', 3: 'easy' };
export const COMPLEXITY_TO_TIER: Record<Complexity, number> = { hard: 1, medium: 2, easy: 3 };

/** 前置闸：执行前是否需要用户确认（Hard / Medium 需要，Easy 不需要） */
export function requiresPreGate(c: Complexity): boolean {
  return c === 'hard' || c === 'medium';
}

/** Hard 必须先进 plan 分析 + 任务拆解 */
export function mustDecompose(c: Complexity): boolean {
  return c === 'hard';
}

export function isComplexity(v: unknown): v is Complexity {
  return v === 'hard' || v === 'medium' || v === 'easy';
}