import { BadRequestException } from '@nestjs/common';
import { GatewayEventsController } from './gateway-events.controller';

describe('GatewayEventsController protocol logging', () => {
  const sendChain = {
    handleSubmitResult: jest.fn(),
    handleSubmitSegmentResult: jest.fn(),
    handleReceipt: jest.fn(),
    intakeReceipt: jest.fn(),
  };
  const protocolLogs = {
    record: jest.fn(),
  };
  const metrics = {
    beginCmppInboundStage: jest.fn().mockReturnValue(1n),
    finishCmppInboundStage: jest.fn(),
  };
  const controller = new GatewayEventsController(
    sendChain as never,
    {} as never,
    protocolLogs as never,
    { recordEvent: jest.fn() } as never,
    metrics as never,
  );

  beforeEach(() => {
    jest.clearAllMocks();
  });

  it('does not duplicate a supplier SubmitResp from the internal aggregate callback', async () => {
    sendChain.handleSubmitResult.mockResolvedValue({ accepted: true });
    const body = {
      messageId: 'MSG-1',
      channelId: 'channel-1',
      gatewayMessageId: '123',
      sequenceId: 7,
      submitStatus: 'accepted' as const,
    };

    await controller.submitResult(body);

    expect(protocolLogs.record).not.toHaveBeenCalled();
  });

  it('persists each supplier segment response without adding a duplicate protocol log', async () => {
    sendChain.handleSubmitSegmentResult.mockResolvedValue({ accepted: true });
    const body = {
      messageId: 'MSG-LONG-1',
      channelId: 'channel-1',
      submitId: 'submit-1',
      segmentIndex: 2,
      segmentTotal: 3,
      gatewayMessageId: '456',
      sequenceId: 8,
      submitStatus: 'accepted' as const,
    };

    await expect(controller.submitSegmentResult(body)).resolves.toEqual({ accepted: true });
    expect(sendChain.handleSubmitSegmentResult).toHaveBeenCalledWith(body);
    expect(protocolLogs.record).not.toHaveBeenCalled();
  });

  it('logs a supplier receipt only after it is durably accepted by the inbox', async () => {
    sendChain.intakeReceipt.mockResolvedValue({ accepted: true, inboxId: 'inbox-1', status: 'pending' });
    const body = {
      messageId: 'receipt-456',
      channelId: 'channel-1',
      connectionId: 'channel-1:0',
      gatewayMessageId: '456',
      phoneNumber: '13127620092',
      receiptStatus: 'undelivered' as const,
      rawStatus: 'UNDELIV',
    };

    await expect(controller.receiptIntake(body)).resolves.toEqual({
      accepted: true,
      inboxId: 'inbox-1',
      status: 'pending',
    });
    expect(protocolLogs.record).toHaveBeenCalledWith(expect.objectContaining({
      direction: 'channel_to_platform',
      eventType: 'deliver_receipt',
      channelId: 'channel-1',
      messageId: 'receipt-456',
      gatewayMessageId: '456',
      status: 'success',
    }));
  });

  it('records a failed inbound total without swallowing the service error', async () => {
    const failure = new Error('inbound failed');
    (sendChain as Record<string, jest.Mock>).submitInboundMessage = jest.fn().mockRejectedValue(failure);

    await expect(controller.submitInbound({
      account: '607532',
      phoneNumber: '13127620092',
      content: 'failed',
      sequenceId: 142,
    })).rejects.toBe(failure);

    expect(metrics.finishCmppInboundStage).toHaveBeenCalledWith(1n, 'total', 'error');
  });

  it('accepts only safe outbound Gateway packet events', () => {
    expect(controller.protocolLog({
      protocol: 'cmpp',
      direction: 'platform_to_channel',
      eventType: 'submit',
      status: 'success',
      messageId: 'MSG-1',
    })).toEqual({ accepted: true });
    expect(protocolLogs.record).toHaveBeenCalledTimes(1);

    expect(() => controller.protocolLog({
      protocol: 'cmpp',
      direction: 'client_to_platform',
      eventType: 'submit',
      status: 'success',
    })).toThrow(BadRequestException);

    expect(controller.protocolLog({
      protocol: 'cmpp',
      direction: 'channel_to_platform',
      eventType: 'submit_resp',
      status: 'success',
      messageId: 'MSG-1',
    })).toEqual({ accepted: true });
    expect(controller.protocolLog({
      protocol: 'cmpp',
      direction: 'platform_to_client',
      eventType: 'submit_resp',
      status: 'success',
      messageId: 'MSG-1',
    })).toEqual({ accepted: true });
    expect(controller.protocolLog({
      protocol: 'cmpp',
      direction: 'platform_to_client',
      eventType: 'deliver_receipt',
      status: 'success',
      messageId: 'MSG-1',
    })).toEqual({ accepted: true });
    expect(controller.protocolLog({
      protocol: 'cmpp',
      direction: 'platform_to_client',
      eventType: 'deliver_uplink',
      status: 'success',
      messageId: 'MSG-1',
    })).toEqual({ accepted: true });
    expect(controller.protocolLog({
      protocol: 'cmpp',
      direction: 'client_to_platform',
      eventType: 'deliver_resp',
      status: 'success',
      messageId: 'MSG-1',
    })).toEqual({ accepted: true });
  });

  it('enriches an enterprise Submit packet with identifiers returned by the real service', async () => {
    (sendChain as Record<string, jest.Mock>).submitInboundMessage = jest.fn().mockResolvedValue({
      accepted: true,
      tenantId: 'tenant-1',
      applicationId: 'app-1',
      messageId: 'MSG-1',
      status: 'fragment_pending',
    });

    await controller.submitInbound({
      account: '607532',
      phoneNumber: '13127620092',
      content: 'fragment',
      sequenceId: 141,
    });

    expect(protocolLogs.record).toHaveBeenCalledWith(expect.objectContaining({
      direction: 'client_to_platform',
      eventType: 'submit',
      tenantId: 'tenant-1',
      applicationId: 'app-1',
      messageId: 'MSG-1',
      status: 'success',
    }));
    expect(metrics.finishCmppInboundStage).toHaveBeenCalledWith(1n, 'total', 'success');
  });

  it('replaces a fallback receipt identifier with the resolved main message identifier', async () => {
    sendChain.handleReceipt.mockResolvedValue({
      tenantId: 'tenant-1',
      applicationId: 'app-1',
      messageId: 'MSG-LONG-1',
    });

    await controller.receipt({
      messageId: 'receipt-736070230367350788',
      channelId: 'channel-copy',
      gatewayMessageId: '736070230367350788',
      phoneNumber: '13127620092',
      receiptStatus: 'delivered',
      rawStatus: 'DELIVRD',
    });

    expect(protocolLogs.record).toHaveBeenCalledWith(expect.objectContaining({
      direction: 'channel_to_platform',
      eventType: 'deliver_receipt',
      channelId: 'channel-copy',
      messageId: 'MSG-LONG-1',
      gatewayMessageId: '736070230367350788',
      tenantId: 'tenant-1',
      applicationId: 'app-1',
      status: 'success',
    }));
  });
});