import { beforeEach, describe, expect, it } from "bun:test";
import { TestApp } from "../testing/TestApp";
import { ApplicationUpdateStarted } from "../events/ApplicationUpdateStarted";
import { ApplicationUpdateFinished } from "../events/ApplicationUpdateFinished";

describe("ApplicationUpdates", () => {
  describe("getPendingUpdates", () => {
    it("should return an empty array when there are no pending updates", () => {
      const app = new TestApp();
      expect(app.projections.ApplicationUpdates.getPendingUpdates()).toEqual(
        []
      );
    });

    it("should return all pending updates when several started", () => {
      const app = new TestApp([
        new ApplicationUpdateStarted(
          { id: "mail", newVersion: "1.0.0" },
          new Date()
        ),
        new ApplicationUpdateStarted(
          { id: "blog", newVersion: "10.0.1" },
          new Date()
        ),
      ]);

      const updates = app.projections.ApplicationUpdates.getPendingUpdates();
      expect(updates).toEqual([
        { id: "mail", newVersion: "1.0.0" },
        { id: "blog", newVersion: "10.0.1" },
      ]);
    });

    it("should return all pending updates for an application while it isn't successfull", () => {
      const app = new TestApp([
        new ApplicationUpdateStarted(
          { id: "mail", newVersion: "1.0.0" },
          new Date()
        ),
        new ApplicationUpdateStarted(
          { id: "blog", newVersion: "10.0.1" },
          new Date()
        ),
        new ApplicationUpdateStarted(
          { id: "mail", newVersion: "1.0.1" },
          new Date()
        ),
      ]);

      const updates = app.projections.ApplicationUpdates.getPendingUpdates();
      expect(updates).toEqual([
        { id: "mail", newVersion: "1.0.0" },
        { id: "blog", newVersion: "10.0.1" },
        { id: "mail", newVersion: "1.0.1" },
      ]);
    });

    it("should not return updates for applications after they were marked as successful", () => {
      const app = new TestApp([
        new ApplicationUpdateStarted(
          { id: "mail", newVersion: "1.0.0" },
          new Date()
        ),
        new ApplicationUpdateStarted(
          { id: "blog", newVersion: "10.0.1" },
          new Date()
        ),
        new ApplicationUpdateFinished({ id: "mail" }, new Date()),
      ]);

      const updates = app.projections.ApplicationUpdates.getPendingUpdates();
      expect(updates).toEqual([{ id: "blog", newVersion: "10.0.1" }]);
    });

    it("should consider the latest update for an application", () => {
      const app = new TestApp([
        new ApplicationUpdateStarted(
          { id: "mail", newVersion: "1.0.0" },
          new Date()
        ),
        new ApplicationUpdateStarted(
          { id: "blog", newVersion: "4.2.0" },
          new Date()
        ),
        new ApplicationUpdateFinished({ id: "mail" }, new Date()),
        new ApplicationUpdateStarted(
          { id: "mail", newVersion: "1.0.1" },
          new Date()
        ),
      ]);

      const updates = app.projections.ApplicationUpdates.getPendingUpdates();
      expect(updates).toEqual([
        { id: "blog", newVersion: "4.2.0" },
        { id: "mail", newVersion: "1.0.1" },
      ]);
    });
  });
});