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

import type { RegistryCredentialStatus } from "@/types/registry";

import { executeRegistryCredentialValidation } from "./credential-execution";
import { REGISTRY_CREDENTIAL_TASK_KIND } from "./credential-task";

const {
  refreshRegistryCollectionsMock,
  refreshRegistryCredentialMock,
  submitRegistryCredentialMock,
  trackAndPollTaskMock,
} = vi.hoisted(() => ({
  refreshRegistryCollectionsMock: vi.fn(),
  refreshRegistryCredentialMock: vi.fn(),
  submitRegistryCredentialMock: vi.fn(),
  trackAndPollTaskMock: vi.fn(),
}));

vi.mock("@/actions/registry/registry", () => ({
  refreshRegistryCollections: refreshRegistryCollectionsMock,
  refreshRegistryCredential: refreshRegistryCredentialMock,
  submitRegistryCredential: submitRegistryCredentialMock,
}));

vi.mock("@/store/task-watcher/store", () => ({
  TASK_WATCHER_STATUS: { PENDING: "pending", READY: "ready", ERROR: "error" },
  trackAndPollTask: trackAndPollTaskMock,
}));

const activeCredential: RegistryCredentialStatus = {
  configured: true,
  isValid: true,
  scopes: ["catalog:read"],
  validationPending: false,
};
const noCredential: RegistryCredentialStatus = {
  configured: false,
  isValid: false,
  scopes: [],
  validationPending: false,
};
const pendingCredential: RegistryCredentialStatus = {
  configured: true,
  isValid: false,
  scopes: [],
  validationPending: true,
};

describe("executeRegistryCredentialValidation", () => {
  beforeEach(() => {
    vi.clearAllMocks();
    refreshRegistryCollectionsMock.mockResolvedValue({
      status: "complete",
      catalog: { status: "complete", artifacts: [] },
      tenantArtifacts: [],
    });
    submitRegistryCredentialMock.mockResolvedValue({
      status: "submitted",
      taskId: "task-1",
      priorConfigured: false,
    });
    trackAndPollTaskMock.mockResolvedValue({
      status: "ready",
      result: { stored: true, error: null },
    });
    refreshRegistryCredentialMock.mockResolvedValue({
      status: "status",
      credential: activeCredential,
    });
  });

  it("connects after the watched task settles and the credential is active", async () => {
    // Given
    const key = "registry-test-key";

    // When
    const outcome = await executeRegistryCredentialValidation(key);

    // Then
    expect(outcome).toEqual({
      status: "connected",
      credential: activeCredential,
      collections: {
        status: "complete",
        catalog: { status: "complete", artifacts: [] },
        tenantArtifacts: [],
      },
    });
    expect(submitRegistryCredentialMock).toHaveBeenCalledWith(key);
    expect(refreshRegistryCredentialMock).toHaveBeenCalledTimes(1);
    expect(refreshRegistryCollectionsMock).toHaveBeenCalledTimes(1);
    expect(trackAndPollTaskMock).toHaveBeenCalledWith({
      taskId: "task-1",
      kind: REGISTRY_CREDENTIAL_TASK_KIND,
      meta: { priorConfigured: "false" },
      notifyHandler: false,
    });
    // The key must never reach the persisted watcher record.
    expect(JSON.stringify(trackAndPollTaskMock.mock.calls)).not.toContain(key);
  });

  it("reports an invalid key when the settled credential is not active", async () => {
    // Given
    refreshRegistryCredentialMock.mockResolvedValue({
      status: "status",
      credential: noCredential,
    });

    // When
    const outcome = await executeRegistryCredentialValidation("bad-key");

    // Then
    expect(outcome).toEqual({ status: "invalid", credential: noCredential });
  });

  it("keeps a failed replacement distinct from a first invalid key", async () => {
    // Given
    submitRegistryCredentialMock.mockResolvedValue({
      status: "submitted",
      taskId: "task-2",
      priorConfigured: true,
    });
    trackAndPollTaskMock.mockResolvedValue({
      status: "error",
      error: 'Task ended in state "failed".',
    });
    refreshRegistryCredentialMock.mockResolvedValue({
      status: "status",
      credential: activeCredential,
    });

    // When
    const outcome = await executeRegistryCredentialValidation("replacement");

    // Then
    expect(outcome).toEqual({ status: "replacement_failed" });
  });

  it("reports a validation still pending after the watch settles", async () => {
    // Given
    trackAndPollTaskMock.mockResolvedValue({
      status: "error",
      error: "The task expired before it could be tracked to completion.",
    });
    refreshRegistryCredentialMock.mockResolvedValue({
      status: "status",
      credential: pendingCredential,
    });

    // When
    const outcome = await executeRegistryCredentialValidation("slow-key");

    // Then
    expect(outcome).toEqual({
      status: "pending",
      credential: pendingCredential,
    });
  });

  it("passes submit failures through without watching any task", async () => {
    // Given
    submitRegistryCredentialMock
      .mockResolvedValueOnce({ status: "access_denied" })
      .mockResolvedValueOnce({
        status: "replacement_failed",
        credential: activeCredential,
      })
      .mockResolvedValueOnce({ status: "error" });

    // When
    const denied = await executeRegistryCredentialValidation("key");
    const replacementFailed = await executeRegistryCredentialValidation("key");
    const failed = await executeRegistryCredentialValidation("key");

    // Then
    expect(denied).toEqual({ status: "access_denied" });
    expect(replacementFailed).toEqual({ status: "replacement_failed" });
    expect(failed).toEqual({ status: "error" });
    expect(trackAndPollTaskMock).not.toHaveBeenCalled();
    expect(refreshRegistryCredentialMock).not.toHaveBeenCalled();
  });

  it("confirms and publishes once when validation finishes after the dialog deadline", async () => {
    vi.useFakeTimers();
    const changed = vi.fn();
    window.addEventListener("registry-credential-changed", changed);
    try {
      let finish: (result: unknown) => void = () => {};
      trackAndPollTaskMock.mockReturnValue(
        new Promise((resolve) => {
          finish = resolve;
        }),
      );
      const waiting = executeRegistryCredentialValidation("slow-key");
      await vi.advanceTimersByTimeAsync(30_000);
      await expect(waiting).resolves.toEqual({ status: "pending" });
      expect(refreshRegistryCredentialMock).not.toHaveBeenCalled();
      finish({ status: "ready", result: { stored: true, error: null } });
      await vi.advanceTimersByTimeAsync(0);
      expect(refreshRegistryCredentialMock).toHaveBeenCalledTimes(1);
      expect(refreshRegistryCollectionsMock).toHaveBeenCalledTimes(1);
      expect(changed).toHaveBeenCalledTimes(1);
      expect(changed.mock.calls[0][0].detail.status).toBe("connected");
    } finally {
      window.removeEventListener("registry-credential-changed", changed);
      vi.useRealTimers();
    }
  });

  it("publishes the same failure returned to the dialog when collections fail", async () => {
    const changed = vi.fn();
    window.addEventListener("registry-credential-changed", changed);
    try {
      refreshRegistryCollectionsMock.mockResolvedValue({
        status: "unavailable",
      });
      const result = await executeRegistryCredentialValidation("key");
      expect(result).toEqual({
        status: "error",
        message: "Registry collections could not be loaded. Try again.",
      });
      expect(changed).toHaveBeenCalledTimes(1);
      expect(changed.mock.calls[0][0].detail).toBe(result);
    } finally {
      window.removeEventListener("registry-credential-changed", changed);
    }
  });

  it.each([false, true])(
    "does not confirm an unsettled task (priorConfigured: %s)",
    async (priorConfigured) => {
      submitRegistryCredentialMock.mockResolvedValue({
        status: "submitted",
        taskId: "task-1",
        priorConfigured,
      });
      trackAndPollTaskMock.mockResolvedValue({ status: "pending" });
      expect(await executeRegistryCredentialValidation("race-key")).toEqual({
        status: "pending",
      });
      expect(refreshRegistryCredentialMock).not.toHaveBeenCalled();
      expect(refreshRegistryCollectionsMock).not.toHaveBeenCalled();
    },
  );

  it("fails safely when the submit RPC rejects", async () => {
    // Given
    submitRegistryCredentialMock.mockRejectedValue(new Error("rpc dropped"));

    // When
    const outcome = await executeRegistryCredentialValidation("key");

    // Then
    expect(outcome).toEqual({ status: "error" });
    expect(trackAndPollTaskMock).not.toHaveBeenCalled();
  });

  it("fails safely when the authoritative re-read RPC rejects", async () => {
    // Given
    refreshRegistryCredentialMock.mockRejectedValue(new Error("rpc dropped"));

    // When
    const outcome = await executeRegistryCredentialValidation("key");

    // Then
    expect(outcome).toEqual({ status: "error" });
  });

  it("fails safely when tracking throws before the authoritative re-read", async () => {
    // Given
    trackAndPollTaskMock.mockRejectedValue(new Error("watcher crashed"));

    // When
    const outcome = await executeRegistryCredentialValidation("key");

    // Then
    expect(outcome).toEqual({ status: "error" });
    expect(refreshRegistryCredentialMock).not.toHaveBeenCalled();
  });

  it("propagates authoritative re-read failures after the watch", async () => {
    // Given
    refreshRegistryCredentialMock
      .mockResolvedValueOnce({ status: "access_denied" })
      .mockResolvedValueOnce({ status: "error" });

    // When
    const denied = await executeRegistryCredentialValidation("key");
    const failed = await executeRegistryCredentialValidation("key");

    // Then
    expect(denied).toEqual({ status: "access_denied" });
    expect(failed).toEqual({ status: "error" });
  });

  it("does not report a rejected replacement as connected when the prior key remains active", async () => {
    submitRegistryCredentialMock.mockResolvedValue({
      status: "submitted",
      taskId: "task",
      priorConfigured: true,
    });
    trackAndPollTaskMock.mockResolvedValue({
      status: "ready",
      result: { stored: false, error: "Invalid key" },
    });
    expect(await executeRegistryCredentialValidation("replacement")).toEqual({
      status: "replacement_failed",
    });
  });
});