import { afterEach, beforeEach, describe, expect, it } from "vitest";
import { PLAYER_AGGRO_ID } from "./aggro";
import { applyEnemySourceAura, enemySourceAuraContract, supportedEnemySourceAuraDefinition } from "./enemySourceAuras";
import { useCombatStore, type MobCombatState } from "./combatStore";
import { requireDungeonDefinition } from "./dungeonRegistry";
import { DEFAULT_ENEMY_ATTACK, type EnemyAttackDefinition } from "./enemyAttacks";
import { clearMobRuntimeRegistry, setMobPosition } from "./mobRuntimeRegistry";
import { clearPartyRuntimeRegistry } from "./partyRuntimeRegistry";
import { resetCombatSpatialProvider } from "./combatSpatial";

const stockade = requireDungeonDefinition("stormwind-stockade");

function importedAttack(entry: number, spellId: number): EnemyAttackDefinition {
  const attack = stockade.entities[`entry-${entry}`]?.combat?.attacks
    .find((candidate) => candidate.spellId === spellId);
  if (!attack) throw new Error(`Missing imported Stockade attack ${entry}:${spellId}`);
  return attack;
}

function registerMob(id: string, entry: number, attacks: readonly EnemyAttackDefinition[]): void {
  useCombatStore.getState().registerMob(id, {
    name: `Imported Stockade entry ${entry}`,
    serverEntry: entry,
    level: 30,
    maxHealth: 50_000,
    xpReward: 0,
    attacks,
  });
  setMobPosition(id, [2, 0, 0]);
}

function engageMob(id: string, now: number): void {
  useCombatStore.getState().selectMob(id);
  useCombatStore.getState().damageMob(id, 1, now);
}

function delayedMainhand(): EnemyAttackDefinition {
  return {
    ...DEFAULT_ENEMY_ATTACK,
    initialCooldownMs: [60_000, 60_000],
    repeatCooldownMs: [2_000, 2_000],
  };
}

function bloodlustAura(casterId: string, appliedAt: number) {
  const contract = enemySourceAuraContract(6742, "ascension");
  if (!contract) throw new Error("Missing pinned Bloodlust source contract");
  const definition = supportedEnemySourceAuraDefinition(contract);
  if (!definition) throw new Error("Missing supported Bloodlust source definition");
  const aura = applyEnemySourceAura([], definition, casterId, casterId, appliedAt)[0];
  if (!aura) throw new Error("Could not create sourced Bloodlust aura");
  return aura;
}

beforeEach(() => {
  clearMobRuntimeRegistry();
  clearPartyRuntimeRegistry();
  resetCombatSpatialProvider();
  useCombatStore.getState().initializeCharacter({ classId: "warrior", level: 30 });
  useCombatStore.getState().setPlayerPosition([0, 0, 0]);
});

afterEach(() => {
  clearMobRuntimeRegistry();
  clearPartyRuntimeRegistry();
  resetCombatSpatialProvider();
});

describe("imported Stockade Dual Wield and Thrash", () => {
  it("preserves the three sourced 674 self casts and Bazil's 29651 capability row", () => {
    for (const [entry, eventType] of [[1696, 0], [1711, 1], [1716, 1]] as const) {
      const attack = importedAttack(entry, 674);
      expect(attack).toMatchObject({
        target: "self",
        source: { entry, eventType, actionType: 11, targetType: 1 },
        effect: { kind: "weapon-capability", capability: "dual-wield", sourceSpellId: 674, sourceProfile: "ascension" },
      });
      expect(attack.repeatCooldownMs).toEqual([0, 0]);
    }
    expect(importedAttack(1716, 29651)).toMatchObject({
      effect: { kind: "weapon-capability", sourceSpellId: 29651, sourceProfile: "ascension" },
    });
  });

  it("enables Targorr's offhand from the imported in-combat cast and uses a separate half-delay swing clock", () => {
    const mobId = "enemy-extra-targorr-dual-wield";
    const importedDualWield = importedAttack(1696, 674);
    // Synthetic clock knobs make the exact imported SmartAI effect testable in a short fixture.
    const testDualWield: EnemyAttackDefinition = {
      ...importedDualWield,
      initialCooldownMs: [0, 0],
      repeatCooldownMs: [60_000, 60_000],
      maximumCasts: 1,
    };
    registerMob(mobId, 1696, [delayedMainhand(), testDualWield]);
    engageMob(mobId, 1_000);

    useCombatStore.getState().advanceMobCombat(1_000);
    const normalizedCast = useCombatStore.getState().mobs[mobId]!.attacks
      .find((attack) => attack.id === testDualWield.id)!;
    const releaseAt = 1_000 + (normalizedCast.castTimeMs ?? 0);
    useCombatStore.getState().advanceMobCombat(releaseAt + 1);
    let state = useCombatStore.getState();
    const mob = state.mobs[mobId]!;
    expect(mob.dualWieldEnabled).toBe(true);
    const firstOffhandAt = releaseAt + 201;
    expect(mob.nextEnemyOffhandAttackAt).toBe(firstOffhandAt);
    expect(mob.abilityReadyAt[testDualWield.id]).toBe(Number.POSITIVE_INFINITY);

    useCombatStore.getState().advanceMobCombat(firstOffhandAt - 1);
    expect(useCombatStore.getState().combatEvents.filter((event) => (
      event.sourceActorId === mobId && event.kind === "damage" && event.abilityId?.startsWith("offhand:")
    ))).toHaveLength(0);
    useCombatStore.getState().advanceMobCombat(firstOffhandAt);
    state = useCombatStore.getState();
    const offhandHits = state.combatEvents.filter((event) => (
      event.sourceActorId === mobId && event.kind === "damage" && event.abilityId?.startsWith("offhand:")
    ));
    expect(offhandHits).toHaveLength(1);
    expect(offhandHits[0]?.attackHand).toBe("offhand");
    expect(offhandHits[0]?.extraAttackSourceSpellId).toBeUndefined();
    expect(offhandHits[0]?.rawAmount).toBe(Math.round(mob.attackDamage * 0.5));
    expect(state.mobs[mobId]?.abilityReadyAt["basic-attack"]).toBe(61_000);
    expect(state.mobs[mobId]?.nextEnemyOffhandAttackAt).toBeGreaterThan(firstOffhandAt);
  });

  it("starts Bazil's sourced out-of-combat capability with a half-swing initial offhand delay", () => {
    const mobId = "enemy-extra-bazil-dual-wield-ooc";
    const importedDualWield = importedAttack(1716, 674);
    expect(importedDualWield.activation).toBe("out-of-combat");
    const testDualWield: EnemyAttackDefinition = {
      ...importedDualWield,
      initialCooldownMs: [0, 0],
      repeatCooldownMs: [60_000, 60_000],
      maximumCasts: 1,
    };
    registerMob(mobId, 1716, [delayedMainhand(), testDualWield]);

    useCombatStore.getState().advanceMobCombat(5_000);
    expect(useCombatStore.getState().mobs[mobId]?.dualWieldEnabled).toBe(true);
    expect(useCombatStore.getState().mobs[mobId]?.nextEnemyOffhandAttackAt).toBe(0);

    engageMob(mobId, 6_000);
    useCombatStore.getState().advanceMobCombat(6_000);
    const mob = useCombatStore.getState().mobs[mobId]!;
    expect(mob.nextEnemyOffhandAttackAt).toBe(6_000 + Math.round(mob.swingMs * 0.5));
  });

  it("retimes only in-flight melee clocks for Bloodlust; Thrash drains next update and spell cooldown stays fixed", () => {
    const mobId = "enemy-extra-targorr-haste-clock";
    const thrash: EnemyAttackDefinition = {
      ...importedAttack(1696, 3391),
      initialCooldownMs: [60_000, 60_000],
      repeatCooldownMs: [60_000, 60_000],
      maximumCasts: 1,
    };
    registerMob(mobId, 1696, [delayedMainhand(), thrash]);
    engageMob(mobId, 10_000);
    const current = useCombatStore.getState().mobs[mobId]!;
    const sourceSpellReadyAt = 17_000;
    useCombatStore.setState((state) => ({
      auras: [bloodlustAura(mobId, 10_999)],
      mobs: { ...state.mobs, [mobId]: {
        ...current,
        dualWieldEnabled: true,
        nextEnemyOffhandAttackAt: 12_000,
        pendingExtraAttacks: [{
          id: `thrash:${mobId}:source-cast`,
          sourceSpellId: 3391,
          targetActorId: PLAYER_AGGRO_ID,
          queuedAt: 11_000,
          remaining: 2,
        }],
        abilityReadyAt: {
          ...current.abilityReadyAt,
          "basic-attack": 14_000,
          [thrash.id]: sourceSpellReadyAt,
        },
        meleeAttackSpeedMultiplier: 1,
      } },
    }));

    useCombatStore.getState().advanceMobCombat(11_000);
    let state = useCombatStore.getState();
    let mob = state.mobs[mobId]!;
    expect(mob.nextEnemyOffhandAttackAt).toBe(11_000 + Math.round(1_000 / 1.3));
    expect(mob.pendingExtraAttacks).toHaveLength(1);
    expect(mob.pendingExtraAttacks?.[0]?.queuedAt).toBe(11_000);
    expect(mob.abilityReadyAt[thrash.id]).toBe(sourceSpellReadyAt);
    expect(state.combatEvents.filter((event) => event.sourceActorId === mobId
      && event.kind === "damage" && event.abilityId?.startsWith("thrash:") )).toHaveLength(0);

    useCombatStore.getState().advanceMobCombat(11_001);
    state = useCombatStore.getState();
    mob = state.mobs[mobId]!;
    const queuedHits = state.combatEvents.filter((event) => event.sourceActorId === mobId
      && event.kind === "damage" && event.abilityId?.startsWith("thrash:"));
    expect(queuedHits).toHaveLength(2);
    expect(queuedHits.every((event) => event.attackHand === "extra-mainhand"
      && event.extraAttackSourceSpellId === 3391)).toBe(true);
    expect(queuedHits.every((event) => event.occurredAt === 11_001)).toBe(true);
    expect(mob.pendingExtraAttacks).toEqual([]);
    expect(mob.abilityReadyAt[thrash.id]).toBe(sourceSpellReadyAt);

    useCombatStore.setState({ auras: [] });
    useCombatStore.getState().advanceMobCombat(11_100);
    state = useCombatStore.getState();
    mob = state.mobs[mobId]!;
    expect(mob.nextEnemyOffhandAttackAt).toBe(11_100
      + Math.round((11_000 + Math.round(1_000 / 1.3) - 11_100) * 1.3));
    expect(mob.abilityReadyAt[thrash.id]).toBe(sourceSpellReadyAt);
  });

  it("drops queued Thrash outside melee range and clears weapon state for dead targets", () => {
    const rangedMobId = "enemy-extra-thrash-out-of-range";
    registerMob(rangedMobId, 1696, [delayedMainhand()]);
    engageMob(rangedMobId, 20_000);
    useCombatStore.setState((state) => ({
      mobs: { ...state.mobs, [rangedMobId]: {
        ...state.mobs[rangedMobId]!,
        dualWieldEnabled: true,
        nextEnemyOffhandAttackAt: 25_000,
        pendingExtraAttacks: [{
          id: `thrash:${rangedMobId}:range`, sourceSpellId: 3391,
          targetActorId: PLAYER_AGGRO_ID, queuedAt: 20_000, remaining: 2,
        }],
      } },
    }));
    useCombatStore.getState().setPlayerPosition([20, 0, 0]);
    useCombatStore.getState().advanceMobCombat(20_001);
    expect(useCombatStore.getState().mobs[rangedMobId]?.pendingExtraAttacks).toEqual([]);
    expect(useCombatStore.getState().combatEvents.filter((event) => event.sourceActorId === rangedMobId
      && event.kind === "damage" && event.abilityId?.startsWith("thrash:"))).toHaveLength(0);

    const deadTargetMobId = "enemy-extra-thrash-dead-target";
    useCombatStore.getState().setPlayerPosition([0, 0, 0]);
    registerMob(deadTargetMobId, 1696, [delayedMainhand()]);
    engageMob(deadTargetMobId, 21_000);
    useCombatStore.setState((state) => ({
      mobs: { ...state.mobs, [deadTargetMobId]: {
        ...state.mobs[deadTargetMobId]!,
        dualWieldEnabled: true,
        nextEnemyOffhandAttackAt: 30_000,
        pendingExtraAttacks: [{
          id: `thrash:${deadTargetMobId}:dead`, sourceSpellId: 3391,
          targetActorId: PLAYER_AGGRO_ID, queuedAt: 21_000, remaining: 2,
        }],
        lastDamagedActorId: PLAYER_AGGRO_ID,
      } },
      health: 0,
    }));
    useCombatStore.getState().advanceMobCombat(21_001);
    const deadState = useCombatStore.getState().mobs[deadTargetMobId]!;
    expect(deadState.pendingExtraAttacks).toEqual([]);
    expect(deadState.dualWieldEnabled).toBe(false);
    expect(deadState.nextEnemyOffhandAttackAt).toBe(0);
    expect(deadState.lastDamagedActorId).toBeNull();
  });

  it("clears queued attacks and offhand timers on navigation/leash and full encounter resets", () => {
    const mobId = "enemy-extra-thrash-navigation-reset";
    registerMob(mobId, 1696, [delayedMainhand()]);
    engageMob(mobId, 30_000);
    const prime = (id: string) => useCombatStore.setState((state) => ({
      mobs: { ...state.mobs, [id]: {
        ...state.mobs[id]!,
        dualWieldEnabled: true,
        nextEnemyOffhandAttackAt: 45_000,
        pendingExtraAttacks: [{
          id: `thrash:${id}:reset`, sourceSpellId: 3391,
          targetActorId: PLAYER_AGGRO_ID, queuedAt: 30_000, remaining: 2,
        }],
        lastDamagedActorId: PLAYER_AGGRO_ID,
        meleeAttackSpeedMultiplier: 1 / 1.3,
      } },
    }));
    prime(mobId);
    expect(useCombatStore.getState().resetMobForNavigation(mobId, false, 31_000)).toBe(true);
    let mob = useCombatStore.getState().mobs[mobId]!;
    expect(mob.pendingExtraAttacks).toEqual([]);
    expect(mob.dualWieldEnabled).toBe(false);
    expect(mob.nextEnemyOffhandAttackAt).toBe(0);
    expect(mob.lastDamagedActorId).toBeNull();
    expect(mob.meleeAttackSpeedMultiplier).toBe(1);

    prime(mobId);
    useCombatStore.getState().resetEncounter();
    mob = useCombatStore.getState().mobs[mobId]!;
    expect(mob.pendingExtraAttacks).toEqual([]);
    expect(mob.dualWieldEnabled).toBe(false);
    expect(mob.nextEnemyOffhandAttackAt).toBe(0);
    expect(mob.lastDamagedActorId).toBeNull();
    expect(mob.meleeAttackSpeedMultiplier).toBe(1);
  });

  it("does not grant source Dual Wield capability to RuneWaker, summoned, or character-defender mobs", () => {
    const importedDualWield = importedAttack(1716, 674);
    const testDualWield: EnemyAttackDefinition = {
      ...importedDualWield,
      initialCooldownMs: [0, 0],
      repeatCooldownMs: [60_000, 60_000],
      maximumCasts: 1,
    };
    const fixtures = [
      ["enemy-extra-rw-exclusion", { runewakerNpcId: 7 }],
      ["enemy-extra-summon-exclusion", { summonedBy: "summoner" }],
      ["enemy-extra-defender-exclusion", { characterDefender: {} as MobCombatState["characterDefender"] }],
    ] as const;
    for (const [id] of fixtures) registerMob(id, 1716, [testDualWield]);
    useCombatStore.setState((state) => {
      const mobs = { ...state.mobs };
      for (const [id, excludedState] of fixtures) {
        mobs[id] = { ...mobs[id]!, ...excludedState, dualWieldEnabled: true,
          pendingExtraAttacks: [], nextEnemyOffhandAttackAt: 0 };
      }
      return { mobs };
    });

    useCombatStore.getState().advanceMobCombat(40_000);
    for (const [id] of fixtures) expect(useCombatStore.getState().mobs[id]?.dualWieldEnabled).toBe(false);
  });

  it("queues Targorr's imported Thrash for two independent next-update mainhand packets", () => {
    const mobId = "enemy-extra-targorr-thrash";
    const importedThrash = importedAttack(1696, 3391);
    expect(importedThrash).toMatchObject({
      id: "spell-3391",
      effect: { kind: "extra-attacks", sourceSpellId: 3391, sourceProfile: "ascension", count: 2 },
    });
    // The source has no Stockade SmartAI cast row for Thrash; these are synthetic test-only schedule values.
    const syntheticThrashClock: EnemyAttackDefinition = {
      ...importedThrash,
      initialCooldownMs: [0, 0],
      repeatCooldownMs: [60_000, 60_000],
      maximumCasts: 1,
    };
    registerMob(mobId, 1696, [delayedMainhand(), syntheticThrashClock]);
    engageMob(mobId, 2_000);

    useCombatStore.getState().advanceMobCombat(2_000);
    const normalizedThrash = useCombatStore.getState().mobs[mobId]!.attacks
      .find((attack) => attack.id === syntheticThrashClock.id)!;
    const releaseAt = 2_000 + (normalizedThrash.castTimeMs ?? 0);
    useCombatStore.getState().advanceMobCombat(releaseAt + 1);
    let mob = useCombatStore.getState().mobs[mobId]!;
    expect(mob.pendingExtraAttacks).toEqual([{
      id: `thrash:${mobId}:spell-3391:0:${releaseAt + 1}`,
      sourceSpellId: 3391,
      targetActorId: PLAYER_AGGRO_ID,
      queuedAt: releaseAt + 1,
      remaining: 2,
    }]);
    expect(useCombatStore.getState().combatEvents.filter((event) => (
      event.sourceActorId === mobId && event.kind === "damage"
    ))).toHaveLength(0);

    useCombatStore.getState().advanceMobCombat(releaseAt + 2);
    mob = useCombatStore.getState().mobs[mobId]!;
    const swings = useCombatStore.getState().combatEvents.filter((event) => (
      event.sourceActorId === mobId && event.kind === "damage" && event.abilityId?.startsWith("thrash:")
    ));
    expect(swings).toHaveLength(2);
    expect(new Set(swings.map((event) => event.abilityId)).size).toBe(2);
    expect(swings.every((event) => event.targetActorId === PLAYER_AGGRO_ID)).toBe(true);
    expect(mob.pendingExtraAttacks).toEqual([]);
    expect(mob.abilityCastCounts[syntheticThrashClock.id]).toBe(1);
  });
});