// Sarah-JSON authoring schema for Meeseeks skills.
// Frozen at "SkillCore + extensions envelope" (plan v3 § 15.3 C1).
// This is the canonical authoring shape; the export bundle (SKILL.md +
// manifest.json + actions.toon) is derived from it.

import { z } from "zod";

export const SKILL_NAME_PATTERN = /^[a-z][a-z0-9-]*$/;

export const ACTIONS = ["click", "type", "read", "wait", "verify"] as const;
export type Action = (typeof ACTIONS)[number];

export const SkillTarget = z.object({
  description: z.string().min(1),
  bbox: z.tuple([z.number(), z.number(), z.number(), z.number()]).optional(),
  ax_role: z.string().optional(),
  ax_name: z.string().optional(),
});

export const SkillStep = z.object({
  id: z.string().min(1),
  instruction: z.string().min(1),
  action: z.enum(ACTIONS),
  target: SkillTarget,
  successCheck: z.string().min(1),
  fallback: z.string().optional(),
});

export const SkillMeta = z.object({
  domain: z.string().min(1),
  redacted: z.literal(true),
  placeholders: z.array(z.string()),
});

export const SkillCore = z.object({
  schemaVersion: z.literal("0.1"),
  name: z.string().regex(SKILL_NAME_PATTERN),
  intent: z.string().min(1),
  inputs: z.array(z.string()),
  preconditions: z.array(z.string()),
  steps: z.array(SkillStep).min(1),
  meta: SkillMeta,
  extensions: z.record(z.string(), z.unknown()).default({}),
});

export type Skill = z.infer<typeof SkillCore>;
export type Step = z.infer<typeof SkillStep>;
export type Target = z.infer<typeof SkillTarget>;
export type Meta = z.infer<typeof SkillMeta>;