export type Wow335HunterPetHappinessState = "unhappy" | "content" | "happy";

/** TrinityCore 3.3.5 stores each happiness band as 333,000 POWER_HAPPINESS. */
export const WOW335_HUNTER_PET_HAPPINESS_LEVEL_SIZE = 333_000;

/**
 * Resolve the stock 3.3.5 happiness band from the pet's POWER_HAPPINESS value.
 * Invalid values safely fall back to zero, which is the Unhappy band.
 */
export function wow335HunterPetHappinessState(
  happinessPower: number,
): Wow335HunterPetHappinessState {
  const value = Number.isFinite(happinessPower)
    ? Math.max(0, Math.trunc(happinessPower))
    : 0;
  if (value < WOW335_HUNTER_PET_HAPPINESS_LEVEL_SIZE) return "unhappy";
  if (value >= WOW335_HUNTER_PET_HAPPINESS_LEVEL_SIZE * 2) return "happy";
  return "content";
}

/**
 * Stock 3.3.5 Hunter-pet main-hand base-damage multiplier by happiness band.
 * This is deliberately scoped to base auto-attack damage; it does not assert
 * that every special-attack formula consumes the modified weapon damage.
 */
export function wow335HunterPetAutoAttackDamageMultiplier(
  happinessPower: number,
): number {
  const state = wow335HunterPetHappinessState(happinessPower);
  if (state === "happy") return 1.25;
  if (state === "unhappy") return 0.75;
  return 1;
}