import type { AuraDefinition } from "./combatAuras";
import { WOW335_TALENT_NODES } from "./wow335Talents.generated";

export const WOW335_DEATH_KNIGHT_BLOODY_VENGEANCE_TALENT_ID = "talent-1944";
export const WOW335_DEATH_KNIGHT_BLOODY_VENGEANCE_AURA_ID = "wow335:death-knight:bloody-vengeance";

const BLOODY_VENGEANCE_NODE = WOW335_TALENT_NODES.find(
  (node) => node.id === WOW335_DEATH_KNIGHT_BLOODY_VENGEANCE_TALENT_ID,
);

export interface Wow335DeathKnightBloodyVengeanceProfile {
  readonly rank: number;
  readonly physicalDamageBonusPerStack: number;
  readonly durationMs: number;
  readonly maxStacks: number;
  readonly triggerSpellId: number;
}

/** Read the exact per-rank values and linked aura child from the generated local talent row. */
export function wow335DeathKnightBloodyVengeanceProfile(
  rank: number,
): Wow335DeathKnightBloodyVengeanceProfile | null {
  const normalizedRank = Math.trunc(rank);
  const talentRank = BLOODY_VENGEANCE_NODE?.rankEffects[normalizedRank - 1];
  const description = BLOODY_VENGEANCE_NODE?.rankDescriptions[normalizedRank - 1];
  if (normalizedRank < 1 || !talentRank || !description || talentRank.procChance !== 100) return null;

  const values = description.match(
    /^Gives you a (\d+(?:\.\d+)?)% bonus to physical damage you deal for (\d+(?:\.\d+)?) seconds after dealing a critical strike from a weapon swing, spell, or ability\. This effect stacks up to (\d+) times\.$/,
  );
  const triggerSpellId = talentRank.effects.find((effect) => effect.triggerSpellId > 0)?.triggerSpellId ?? 0;
  if (!values || triggerSpellId <= 0) return null;

  const physicalDamageBonusPerStack = Number(values[1]) / 100;
  const durationMs = Number(values[2]) * 1_000;
  const maxStacks = Number(values[3]);
  if (!Number.isFinite(physicalDamageBonusPerStack) || physicalDamageBonusPerStack <= 0
    || !Number.isFinite(durationMs) || durationMs <= 0
    || !Number.isInteger(maxStacks) || maxStacks <= 0) return null;
  return { rank: normalizedRank, physicalDamageBonusPerStack, durationMs, maxStacks, triggerSpellId };
}

/** Every eligible critical-damage event can add one stack; noncrit damage cannot trigger the talent. */
export function wow335DeathKnightBloodyVengeanceShouldTrigger(
  rank: number,
  criticalDamageEvent: boolean,
): boolean {
  return criticalDamageEvent && wow335DeathKnightBloodyVengeanceProfile(rank) !== null;
}

/** The generated tooltip scopes the stack to physical damage, regardless of attack kind. */
export function wow335DeathKnightBloodyVengeanceAuraDefinition(
  rank: number,
): AuraDefinition | null {
  const profile = wow335DeathKnightBloodyVengeanceProfile(rank);
  if (!profile) return null;
  return {
    id: WOW335_DEATH_KNIGHT_BLOODY_VENGEANCE_AURA_ID,
    name: "Bloody Vengeance",
    description: `Critical strikes increase physical damage dealt by ${Math.round(profile.physicalDamageBonusPerStack * 100)}% per stack for ${profile.durationMs / 1_000} seconds, stacking up to ${profile.maxStacks} times.`,
    disposition: "buff",
    durationMs: profile.durationMs,
    maxStacks: profile.maxStacks,
    stackBehavior: "add",
    modifiers: [{
      kind: "damage",
      direction: "dealt",
      operation: "percent",
      school: "physical",
      value: profile.physicalDamageBonusPerStack,
    }],
  };
}