/** Boundary strings for shared validation unit tests (V-1, V-2, V-3). */

// ---------------------------------------------------------------------------
// V-1: SKU [A-Z0-9-]{3,24}
// ---------------------------------------------------------------------------

/** Valid SKUs spanning the charset and length boundaries. */
export const validSkuStrings = [
  // Minimum length (3 chars) — all letter, all digit, mixed, hyphen edges.
  "ABC",
  "012",
  "A0A",
  "A-B",
  "0-1",
  // Mid-range typical.
  "BW-0042",
  "SLAB-UAT-001",
  "A9Z",
  // Maximum length (24 chars).
  "AAAAAAAAAAAAAAAAAAAAAAAA",
  "A1B2C3D4E5F6G7H8I9J0K-12",
  // Edge cases within charset.
  "A-A-A-A-A-A",
  "1-2-3-4-5-6",
  "ABCDEF",
];

/** Invalid SKUs: wrong charset, too short, too long. */
export const invalidSkuStrings = [
  // Too short (1–2 chars).
  "A",
  "AB",
  // Too long (25+ chars).
  "AAAAAAAAAAAAAAAAAAAAAAAAA",
  // Lowercase letters (outside charset).
  "abc",
  "bw-0042",
  "aB3",
  // Special characters outside charset.
  "ABC!",
  "A B",
  "A_B",
  "ABC.D",
  "ABC#1",
  "ABC/1",
  "ABC\\1",
  // Empty.
  "",
];

// ---------------------------------------------------------------------------
// V-2: Title / short_title / description maxLength (UTF-8)
// ---------------------------------------------------------------------------

import {
  MAX_TITLE_LENGTH,
  MAX_SHORT_TITLE_LENGTH,
  MAX_DESCRIPTION_LENGTH,
} from "../../lib/validation/constants.js";

const TITLE_LEN = MAX_TITLE_LENGTH;
const SHORT_TITLE_LEN = MAX_SHORT_TITLE_LENGTH;
const DESC_LEN = MAX_DESCRIPTION_LENGTH;

function repeat(char: string, count: number): string {
  return char.repeat(count);
}

function buildTitle(): { title: string; length: number } {
  return { title: repeat("A", TITLE_LEN), length: TITLE_LEN };
}

function buildShortTitle(): { shortTitle: string; length: number } {
  return { shortTitle: repeat("B", SHORT_TITLE_LEN), length: SHORT_TITLE_LEN };
}

function buildDescription(): { description: string; length: number } {
  return { description: repeat("C", DESC_LEN), length: DESC_LEN };
}

export function validTitleFixture(): { title: string; length: number } {
  return buildTitle();
}

export function invalidTitleFixture(): { title: string; length: number } {
  return { title: repeat("A", TITLE_LEN + 1), length: TITLE_LEN + 1 };
}

export function validShortTitleFixture(): { shortTitle: string; length: number } {
  return buildShortTitle();
}

export function invalidShortTitleFixture(): { shortTitle: string; length: number } {
  return { shortTitle: repeat("B", SHORT_TITLE_LEN + 1), length: SHORT_TITLE_LEN + 1 };
}

export function validDescriptionFixture(): { description: string; length: number } {
  return buildDescription();
}

export function invalidDescriptionFixture(): { description: string; length: number } {
  return { description: repeat("C", DESC_LEN + 1), length: DESC_LEN + 1 };
}

// ---------------------------------------------------------------------------
// V-3: Validation module version hash
// ---------------------------------------------------------------------------

/** Expected hash for the current module (constants v1). */
export const expectedHash = "v1";

/** A stale hash to test mismatch detection. */
export const staleHash = "v0";