import { afterEach, beforeEach, describe, expect, it } from "vitest";
import { PLAYER_AGGRO_ID } from "./aggro";
import { useCombatStore } from "./combatStore";
import { registerCombatSpatialProvider, resetCombatSpatialProvider } from "./combatSpatial";
import { clearMobRuntimeRegistry, getMobPosition, setMobPosition } from "./mobRuntimeRegistry";
import { clearPartyRuntimeRegistry, registerPartyRuntimePosition } from "./partyRuntimeRegistry";
import { usePartyStore } from "./partyStore";

function registerTarget(id = "target", position: readonly [number, number, number] = [0, 0, 10]) {
  useCombatStore.getState().registerMob(id, { name: id, maxHealth: 1_000, xpReward: 0 });
  setMobPosition(id, position);
  useCombatStore.getState().selectMob(id);
}

describe("dungeon combat fidelity integration", () => {
  beforeEach(() => {
    resetCombatSpatialProvider();
    clearMobRuntimeRegistry();
    clearPartyRuntimeRegistry();
    useCombatStore.getState().initializeCharacter({ classId: "mage", level: 10 });
    useCombatStore.getState().setPlayerPosition([0, 0, 0]);
    usePartyStore.getState().initializeParty("fidelity", 10, useCombatStore.getState().health);
  });
  afterEach(resetCombatSpatialProvider);

  it("rejects obstructed and rear-arc hostile casts while friendly healing ignores facing", () => {
    registerTarget();
    let blocked = true;
    registerCombatSpatialProvider({
      actor: (id) => id === PLAYER_AGGRO_ID
        ? { id, position: [0, 0, 0], yaw: Math.PI }
        : { id, position: getMobPosition(id) ?? [0, 0, 0], yaw: 0 },
      hasLineOfSight: () => !blocked,
      projectGroundPoint: (point) => point,
    });
    expect(useCombatStore.getState().castAbility("mage-frostbolt", { now: 1_000 })).toMatchObject({ ok: false, reason: "line-of-sight" });
    blocked = false;
    expect(useCombatStore.getState().castAbility("mage-frostbolt", { now: 1_000 })).toMatchObject({ ok: false, reason: "not-facing" });

    useCombatStore.getState().initializeCharacter({ classId: "priest", level: 10 });
    const ally = usePartyStore.getState().members[0];
    registerPartyRuntimePosition(ally.id, [0, 0, 10]);
    usePartyStore.getState().selectMember(ally.id);
    usePartyStore.setState((state) => ({ members: state.members.map((member) => member.id === ally.id ? { ...member, health: 1 } : member) }));
    const friendlyResult = useCombatStore.getState().castAbility("wow335-priest-lesser-heal", { now: 2_000 });
    expect(friendlyResult.reason).toBeUndefined();
  });

  it("cycles only living enemy targets that are in range and line of sight", () => {
    for (const [id, position] of [
      ["blocked-near", [2, 0, 0]],
      ["visible", [4, 0, 0]],
      ["too-far", [41, 0, 0]],
    ] as const) {
      useCombatStore.getState().registerMob(id, { name: id });
      setMobPosition(id, position);
    }
    let blockVisibleTarget = false;
    registerCombatSpatialProvider({
      actor: (id) => ({ id, position: getMobPosition(id) ?? [0, 0, 0], yaw: 0 }),
      hasLineOfSight: (_origin, target) => target[0] !== 2 && (!blockVisibleTarget || target[0] !== 4),
      projectGroundPoint: (point) => point,
    });

    expect(useCombatStore.getState().cycleTarget("next", [0, 0, 0], 40)).toBe("visible");
    expect(useCombatStore.getState().cycleTarget("next", [0, 0, 0], 40)).toBe("visible");

    blockVisibleTarget = true;
    expect(useCombatStore.getState().cycleTarget("next", [0, 0, 0], 40)).toBeNull();
    expect(useCombatStore.getState().selectedTargetId).toBeNull();
  });

  it("applies only the first two direct-damage pushbacks and ignores fully absorbed hits", () => {
    registerTarget();
    expect(useCombatStore.getState().castAbility("mage-frostbolt", { now: 1_000 }).ok).toBe(true);
    const original = useCombatStore.getState().activeCast!.completesAt;
    useCombatStore.getState().damagePlayer(1);
    useCombatStore.getState().damagePlayer(1);
    useCombatStore.getState().damagePlayer(1);
    expect(useCombatStore.getState().activeCast).toMatchObject({ completesAt: original + 1_000, pushbackHits: 2 });

    useCombatStore.getState().cancelCast();
    useCombatStore.setState({ globalCooldownEndsAt: 0, shield: 10_000, shieldExpiresAt: Number.MAX_SAFE_INTEGER });
    expect(useCombatStore.getState().castAbility("mage-frostbolt", { now: 5_000 }).ok).toBe(true);
    const absorbedOriginal = useCombatStore.getState().activeCast!.completesAt;
    useCombatStore.getState().damagePlayer(100);
    expect(useCombatStore.getState().activeCast!.completesAt).toBe(absorbedOriginal);
  });

  it("creates persistent collision-safe ground effects and dynamically ticks actors in their radius", () => {
    useCombatStore.getState().initializeCharacter({ classId: "paladin", level: 80 });
    registerTarget("late-target", [20, 0, 0]);
    registerCombatSpatialProvider({
      actor: (id) => ({ id, position: id === PLAYER_AGGRO_ID ? [0, 0, 0] : getMobPosition(id) ?? [0, 0, 0], yaw: 0 }),
      hasLineOfSight: () => true,
      projectGroundPoint: (point) => [point[0], 0, point[2]],
    });
    const groundResult = useCombatStore.getState().castAbility("paladin-consecration", { now: 1_000, groundPosition: [0, 3, 0] });
    expect(groundResult.reason).toBeUndefined();
    expect(useCombatStore.getState().areaEffects).toHaveLength(1);
    setMobPosition("late-target", [2, 0, 0]);
    const before = useCombatStore.getState().mobs["late-target"].health;
    useCombatStore.getState().tick(1, 2_000);
    expect(useCombatStore.getState().mobs["late-target"].health).toBeLessThan(before);
  });

  it("spends independent Death Knight runes and exposes every combatant through actor snapshots", () => {
    useCombatStore.getState().initializeCharacter({ classId: "death-knight", level: 10 });
    registerTarget("rune-target", [0, 0, 10]);
    expect(useCombatStore.getState().castAbility("death-knight-icy-touch", { now: 1_000 }).ok).toBe(true);
    expect(useCombatStore.getState().deathKnightRunes.filter((rune) => rune.readyAt > 1_000)).toHaveLength(1);
    useCombatStore.getState().synchronizeActors();
    const actors = useCombatStore.getState().actors;
    expect(actors[PLAYER_AGGRO_ID].runes).toHaveLength(6);
    expect(actors["rune-target"].kind).toBe("enemy");
    for (const member of usePartyStore.getState().members) expect(actors[member.id].kind).toBe("companion");
  });

  it("emits structured effective damage and healing records", () => {
    registerTarget("event-target", [0, 0, 10]);
    useCombatStore.getState().damageMob("event-target", 25, 1_000);
    useCombatStore.getState().damagePlayer(10);
    useCombatStore.getState().healPlayer(100);
    const events = useCombatStore.getState().combatEvents;
    expect(events.some((event) => event.kind === "damage" && event.targetActorId === "event-target" && event.effectiveAmount > 0)).toBe(true);
    expect(events.some((event) => event.kind === "healing" && event.overheal >= 0)).toBe(true);
    expect(events.every((event) => event.rawAmount >= event.effectiveAmount)).toBe(true);
  });
});