// Cases ported from T3 Code's agentAwareness.test.ts, so the gateway notifies when T3's own app would.
import { describe, expect, it } from "bun:test";

import { threadPhase } from "../src/awareness.ts";
import type { ThreadShell } from "../src/t3/types.ts";

const thread = (overrides: Partial<ThreadShell> = {}): ThreadShell => ({
  id: "thread-2",
  projectId: "project-1",
  title: "Integrate orchestration",
  createdAt: "2026-05-22T12:00:00.000Z",
  updatedAt: "2026-05-22T12:00:00.000Z",
  status: "running",
  activeRunId: "run-1",
  pendingRuntimeRequest: null,
  modelSelection: { instanceId: "codex", model: "gpt-5.4" },
  lineage: { relationshipToParent: null },
  settledOverride: null,
  ...overrides,
});

const request = (kind: string, blocking?: boolean): ThreadShell["pendingRuntimeRequest"] => ({
  id: `request-${kind}`,
  kind,
  createdAt: "2026-05-22T12:00:00.000Z",
  ...(blocking === undefined ? {} : { blocking }),
});

describe("threadPhase", () => {
  it("does not announce completion after a manual stop", () => {
    expect(threadPhase(thread({ status: "completed" }))).toBe("completed");
    expect(threadPhase(thread({ status: "completed", latestRunStopRequested: true }))).toBeNull();
  });

  it.each(["running", "completed", "failed"])("hides %s subagent activity", (status) => {
    expect(threadPhase(thread({ status, lineage: { relationshipToParent: "subagent" } }))).toBeNull();
  });

  it("keeps an older activity run visible over a newer cancelled run", () => {
    expect(threadPhase(thread({ status: "cancelled", activityRunStatus: "running" }))).toBe("running");
  });

  it.each(["completed", "failed"])("hides settled %s work", (status) => {
    expect(threadPhase(thread({ status, settledOverride: "settled" }))).toBeNull();
  });

  it.each([
    ["starting", "starting"],
    ["running", "running"],
    ["waiting", "running"],
  ] as const)("keeps settled %s work visible", (status, phase) => {
    expect(threadPhase(thread({ status, settledOverride: "settled" }))).toBe(phase);
  });

  it.each([
    ["user_input", "waiting_for_input"],
    ["command", "waiting_for_approval"],
  ] as const)("keeps a settled terminal thread with a pending %s request", (kind, phase) => {
    expect(
      threadPhase(thread({ status: "completed", settledOverride: "settled", pendingRuntimeRequest: request(kind) })),
    ).toBe(phase);
  });

  it("keeps settled work held open by an awaited monitor", () => {
    expect(
      threadPhase(
        thread({
          status: "completed",
          settledOverride: "settled",
          pendingBackgroundTasks: [{ kind: "monitor", awaited: true }],
        }),
      ),
    ).toBe("running");
  });

  it.each([
    ["only a dev server", "completed", [{ kind: "command" }]],
    ["a dev server's watchdog monitor", "completed", [{ kind: "monitor" }]],
    ["a command the agent waits on", "running", [{ kind: "command", awaited: true }]],
    ["a dev server and a subagent", "running", [{ kind: "command" }, { kind: "subagent" }]],
  ] as const)("reports a completed run waiting on %s as %s", (_case, phase, tasks) => {
    expect(threadPhase(thread({ status: "completed", pendingBackgroundTasks: [...tasks] }))).toBe(phase);
  });

  it("reports an async question as input only after the working run completes", () => {
    const asking = thread({ pendingRuntimeRequest: request("user_input", false) });
    expect(threadPhase(asking)).toBe("running");
    expect(threadPhase({ ...asking, status: "completed" })).toBe("waiting_for_input");
  });

  it("does not present authentication refreshes as approvals", () => {
    expect(threadPhase(thread({ pendingRuntimeRequest: request("auth_refresh") }))).toBe("running");
  });

  it("hides threads that never ran", () => {
    expect(threadPhase(thread({ status: "idle" }))).toBeNull();
  });

  // Not from upstream: delegate_task children carry no subagent lineage, only delegatedFrom.
  it("shows delegated threads only while they wait on the user", () => {
    const delegatedFrom = { environmentId: "env-desktop", threadId: "thread-1", title: "Parent" };
    expect(threadPhase(thread({ delegatedFrom }))).toBeNull();
    expect(threadPhase(thread({ delegatedFrom, status: "completed" }))).toBeNull();
    expect(threadPhase(thread({ delegatedFrom, pendingRuntimeRequest: request("command") }))).toBe("waiting_for_approval");
  });
});