import axios from 'axios';

import { topicState, topic } from '../../helpers/state';
import commands from '../../../src/commands';
import stateController from '../../../src/state/stateController';
import { Command } from 'commander';
import api from '../../../src/api';
import { findMessageResponseMock, topicMessageResponse, findMessagesResponseMock, topicMessagesResponse } from '../../helpers/api/apiTopicHelper'
import { Logger } from "../../../src/utils/logger";
import stateUtils from '../../../src/utils/state';

const logger = Logger.getInstance();
jest.mock('../../../src/state/state'); // Mock the original module -> looks for __mocks__/state.ts in same directory
jest.mock('axios');

describe('topic message find command', () => {
  const logSpy = jest.spyOn(logger, 'log');
  const errorSpy = jest.spyOn(logger, 'error');

  beforeEach(() => {
    stateController.saveState(topicState);
  });

  describe('topic message find - success path', () => {
    afterEach(() => {
      // Spy cleanup
      logSpy.mockClear();
      errorSpy.mockClear();
    });

    test('✅ Find message for topic ID and sequence number', async () => {
      // Arrange
      const program = new Command();
      commands.topicCommands(program);
      api.topic.findMessage = jest.fn().mockResolvedValue(findMessageResponseMock);
      
      // Act
      await program.parseAsync([
        'node',
        'hedera-cli.ts',
        'topic',
        'message',
        'find',
        '--topic-id',
        topic.topicId,
        '--sequence-number',
        topicMessageResponse.sequence_number.toString(),
      ]);

      // Assert
      expect(logSpy).toHaveBeenCalledWith(
        `Message found: "${Buffer.from(
          topicMessageResponse.message,
            'base64',
          ).toString('ascii')}"`
      );
    });

    test('✅ Find message for topic ID and sequence number filters', async () => {
      // Arrange
      const program = new Command();
      commands.topicCommands(program);
      const mockedAxios = axios as jest.Mocked<typeof axios>;
      const mockResponse = { data: topicMessagesResponse };
      mockedAxios.get.mockResolvedValue(mockResponse);

      // Act
      await program.parseAsync([
        'node',
        'hedera-cli.ts',
        'topic',
        'message',
        'find',
        '--topic-id',
        topic.topicId,
        '--sequence-number-gte',
        topicMessagesResponse.messages.length.toString(),
      ]);

      // Assert
      expect(mockedAxios.get).toHaveBeenCalledWith(`${stateUtils.getMirrorNodeURL()}/topics/${topic.topicId}/messages?sequencenumber=gte:${topicMessagesResponse.messages.length.toString()}&limit=100`);
    });
  });

  describe('topic message find - failing path', () => {
    afterEach(() => {
      // Spy cleanup
      logSpy.mockClear();
      errorSpy.mockClear();
    });

    test('❌ If no sequence number and sequence number filters are provided throw error', async () => {
      // Arrange
      const program = new Command();
      commands.topicCommands(program);
      api.topic.findMessage = jest.fn().mockResolvedValue(findMessageResponseMock);
      
      // Act
      await program.parseAsync([
        'node',
        'hedera-cli.ts',
        'topic',
        'message',
        'find',
        '--topic-id',
        topic.topicId,
      ]);

      // Assert
      expect(errorSpy).toHaveBeenCalledWith(
        'Please provide a sequence number or a sequence number filter'
      );
    });

    test('❌ If no messages with filter are found, show "no messages found" message', async () => {
      // Arrange
      const program = new Command();
      commands.topicCommands(program);
      const customFindMessageResponseMock = {
        data: {
          messages: [],
          links: {
            next: null,
          },
        },
      };
      api.topic.findMessagesWithFilters = jest.fn().mockResolvedValue(customFindMessageResponseMock);
      
      // Act
      await program.parseAsync([
        'node',
        'hedera-cli.ts',
        'topic',
        'message',
        'find',
        '--topic-id',
        topic.topicId,
        '--sequence-number-gte',
        '1000000',
      ]);

      // Assert
      expect(logSpy).toHaveBeenCalledWith(
        'No messages found'
      );
    });
  });
});