/**
 * TASK-0123 — AI writing tools DTOs (zod; validated by `ZodValidate`).
 *
 * Limits (spec §Limits): ≤50 blocks (422 — also re-checked in the service,
 * where it is the 422-with-details path), selected text ≤100k chars (413 —
 * the assembler's check, since the server assembles the content), language
 * ≤64 chars (trim + cap; the UI constrains it too), action = the spec's
 * four tools.
 */
import { z } from "zod";

import { WRITING_ACTIONS } from "./prompts.js";

// NOTE: the >50 cap is intentionally NOT a zod refine (that would be a 400
// VALIDATION_ERROR); the service returns the spec's 422 with details.
export const AiWritingDto = z.object({
  /** The selected block IDs (duplicates are de-duped server-side; the >50
   *  cap is the service's 422 `too_many_blocks` check, per spec §Limits). */
  blockIds: z.array(z.string().min(1)).min(1),
  /** The anchor page the selection is rendered on (UI provenance; the
   *  blocks' own pages carry the permission checks). */
  pageId: z.string().min(1),
  /** The writing action (the spec's four tools). */
  action: z.enum(WRITING_ACTIONS),
  /** Target language for `translate` (trim + cap 64; ignored otherwise). */
  language: z.string().trim().max(64).optional(),
});
export type AiWritingInput = z.infer<typeof AiWritingDto>;

export const ApplyWritingDto = z.object({
  /** The assistant message id from the stream's `done.assistantMessageId`. */
  suggestionId: z.string().min(1),
  /** Subset of the suggestion's blockIds ("accept one"); omitted = all.
   *  Must be a subset — unknown ids are a 422 (no smuggling). */
  blockIds: z.array(z.string().min(1)).min(1).optional(),
});
export type ApplyWritingInput = z.infer<typeof ApplyWritingDto>;