import { describe, expect, it } from "vitest";

import {
  parseInvalidationEvent,
  toInvalidationEvent,
} from "./invalidation";

describe("invalidation event envelopes", () => {
  it("strips every field except type, opaque id, and version", () => {
    const event = toInvalidationEvent({
      topic: "directory",
      aggregateId: "4afeea7b-6f24-43f3-b747-2db98335e01e",
      eventType: "directory.updated",
      payload: {
        id: "4afeea7b-6f24-43f3-b747-2db98335e01e",
        version: 3,
        title: "private draft title",
        blocks: [{ content: "private" }],
      },
    });
    expect(event).toEqual({
      type: "directory.updated",
      id: "4afeea7b-6f24-43f3-b747-2db98335e01e",
      version: 3,
    });
  });

  it("rejects unknown, malformed, and topic-mismatched messages", () => {
    expect(parseInvalidationEvent("not json")).toBeNull();
    expect(
      parseInvalidationEvent(
        JSON.stringify({ type: "page.content", id: "id", version: 1 }),
      ),
    ).toBeNull();
    expect(
      toInvalidationEvent({
        topic: "admin",
        aggregateId: "id",
        eventType: "page.updated",
        payload: { id: "id", version: 1 },
      }),
    ).toBeNull();
  });

  it("accepts public Stygian invalidations only on the Stygian topic", () => {
    expect(toInvalidationEvent({
      topic: "stygian",
      aggregateId: "5269001",
      eventType: "stygian.updated",
      payload: { id: "5269001", version: 4 },
    })).toEqual({ type: "stygian.updated", id: "5269001", version: 4 });
  });

  it("keeps valid scopes only on authenticated admin events", () => {
    const id = "4afeea7b-6f24-43f3-b747-2db98335e01e";
    expect(toInvalidationEvent({
      topic: "admin",
      aggregateId: id,
      eventType: "admin.updated",
      payload: { id, version: 4, scope: "team" },
    })).toEqual({ type: "admin.updated", id, version: 4, scope: "team" });
    expect(parseInvalidationEvent(JSON.stringify({ type: "admin.updated", id, version: 5, scope: `extra:${id}` })))
      .toEqual({ type: "admin.updated", id, version: 5, scope: `extra:${id}` });
    expect(parseInvalidationEvent(JSON.stringify({ type: "page.updated", id, version: 5, scope: "team" })))
      .toBeNull();
    expect(toInvalidationEvent({
      topic: "admin",
      aggregateId: id,
      eventType: "admin.updated",
      payload: { id, version: 6, scope: "unknown" },
    })).toBeNull();
  });

  it("publishes validated overwrite details only on admin events", () => {
    const id = "4afeea7b-6f24-43f3-b747-2db98335e01e";
    const overwrite = { operation: "overwrite", actorName: "Editor One" };
    expect(toInvalidationEvent({
      topic: "admin",
      aggregateId: id,
      eventType: "admin.updated",
      payload: { id, version: 7, scope: "weapon", ...overwrite },
    })).toEqual({ type: "admin.updated", id, version: 7, scope: "weapon", ...overwrite });
    expect(parseInvalidationEvent(JSON.stringify({
      type: "admin.updated",
      id,
      version: 8,
      operation: "overwrite",
    }))).toBeNull();
    expect(toInvalidationEvent({
      topic: `page:${id}`,
      aggregateId: id,
      eventType: "page.updated",
      payload: { id, version: 7, ...overwrite },
    })).toEqual({ type: "page.updated", id, version: 7 });
  });
});