import type { DamageSchool } from "./itemStats";

const MOLTEN_FURY_SCHOOLS = new Set<DamageSchool>(["fire", "frost", "arcane"]);

export const WOW335_MAGE_MOLTEN_FURY_TALENT_ID = "talent-1732";

/** Returns the local generated Molten Fury multiplier for one eligible Mage hit. */
export function wow335MageMoltenFuryMultiplier(
  rank: number,
  school: DamageSchool,
  targetHealth: number,
  targetMaxHealth: number,
): number {
  const normalizedRank = Math.max(0, Math.min(2, Math.trunc(rank)));
  if (normalizedRank <= 0 || !MOLTEN_FURY_SCHOOLS.has(school)
    || !Number.isFinite(targetHealth) || !Number.isFinite(targetMaxHealth)
    || targetMaxHealth <= 0 || targetHealth / targetMaxHealth >= 0.35) {
    return 1;
  }
  return 1 + normalizedRank * 0.06;
}

/** Applies Molten Fury to a Mage damage event using the target's pre-hit health. */
export function wow335MageMoltenFuryDamage(
  amount: number,
  rank: number,
  school: DamageSchool,
  targetHealth: number,
  targetMaxHealth: number,
): number {
  const multiplier = wow335MageMoltenFuryMultiplier(rank, school, targetHealth, targetMaxHealth);
  return multiplier === 1 ? amount : Math.round(amount * multiplier);
}