import {
  OO_EYE_ASYMMETRY_MIN_RATIO,
  OO_EYE_CENTER_SPACING_RATIO,
  ooEyeCentersFromLogoRatio,
} from "@rakazo/core";

/**
 * evOo brand lock — non-negotiable (Ingo).
 *
 * Oo trademark = asymmetric Kulleraugen + size difference.
 *
 * All mascot surfaces (EvooMascot, BotAvatar, Wordmark) MUST keep:
 * 1. Consistent size asymmetry between the two eyes (big O vs small o).
 * 2. Kulleraugen — big, round, glossy googly/cute sclera + pupils.
 * 3. Eye center spacing matched to `evoo-logo.svg` (close / slight overlap).
 *
 * Personality (mouth, hands, accessories, poses) builds ON TOP of this signature.
 * Never symmetrize the eyes. Never use Grok-style emoji faces. Never equal eye radii.
 */

/** Canonical trademark string — cite in reviews and design docs. */
export const EVOO_OO_TRADEMARK = "Oo trademark = asymmetric Kulleraugen + size difference" as const;

/** Big eye (capital O) — outer sclera radius in mascot viewBox units. */
export const EVOO_EYE_BIG_R = 30;

/** Small eye (lowercase o) — ~φ⁻¹ of big eye; trademark size gap. */
export const EVOO_EYE_SMALL_R = 18.54;

/** Big sclera anchor in the mascot viewBox (capital O). */
export const EVOO_EYE_BIG_CX = 44;
export const EVOO_EYE_BIG_CY = 54;

const _mascotSmallCenter = ooEyeCentersFromLogoRatio(
  { cx: EVOO_EYE_BIG_CX, cy: EVOO_EYE_BIG_CY, r: EVOO_EYE_BIG_R },
  EVOO_EYE_SMALL_R,
);

/** Small sclera anchor derived from the logo spacing ratio. */
export const EVOO_EYE_SMALL_CX = _mascotSmallCenter.cx;
export const EVOO_EYE_SMALL_CY = _mascotSmallCenter.cy;

/** Logo-matched center distance ÷ sum of sclera radii (re-export for docs/tests). */
export const EVOO_EYE_CENTER_SPACING_RATIO = OO_EYE_CENTER_SPACING_RATIO;

/** Pupil radii scale with sclera; golden-ratio proportion preserved. */
export const EVOO_PUPIL_BIG_R = 14.2;
export const EVOO_PUPIL_SMALL_R = EVOO_PUPIL_BIG_R * 0.618034;

/** Pupil anchors track sclera; offsets unchanged from the original mascot art. */
export const EVOO_PUPIL_BIG_CX = EVOO_EYE_BIG_CX + 4;
export const EVOO_PUPIL_BIG_CY = EVOO_EYE_BIG_CY + 3;
export const EVOO_PUPIL_SMALL_CX = EVOO_EYE_SMALL_CX + 0.37;
export const EVOO_PUPIL_SMALL_CY = EVOO_EYE_SMALL_CY + 0.94;

/** Minimum big÷small ratio — catches accidental symmetrization in tests/CI. */
export const EVOO_EYE_ASYMMETRY_MIN_RATIO = OO_EYE_ASYMMETRY_MIN_RATIO;

export const EVOO_BRAND_LOCK_RULES = [
  "Two eyes only: one big O, one small o — never equal radii.",
  "Kulleraugen: round white sclera, dark glossy pupil, primary + secondary catchlights.",
  "Eye spacing follows evoo-logo.svg — centers closer than r_big + r_small (slight overlap).",
  "Poses may change gaze, blink, squint (eyeOpen), brows, mouth, hands, accessories — not eye size parity.",
  "No Grok-bot emoji face replacement; no symmetric sticker eyes.",
] as const;

/** Dev/test guard — throws if constants violate the trademark asymmetry. */
export function assertEvooEyeBrandLock(bigR = EVOO_EYE_BIG_R, smallR = EVOO_EYE_SMALL_R): void {
  if (!(bigR > smallR)) {
    throw new Error(
      `${EVOO_OO_TRADEMARK}: big eye radius must exceed small (${bigR} vs ${smallR})`,
    );
  }
  const ratio = bigR / smallR;
  if (ratio < EVOO_EYE_ASYMMETRY_MIN_RATIO) {
    throw new Error(
      `${EVOO_OO_TRADEMARK}: asymmetry ratio ${ratio.toFixed(3)} below minimum ${EVOO_EYE_ASYMMETRY_MIN_RATIO}`,
    );
  }
}

assertEvooEyeBrandLock();