// tslint:disable: no-unused-expression

import { ILogger } from '@node-dlc/logger';
import { expect } from 'chai';

import { GossipQueriesReceiver } from '../../lib/gossip/GossipQueriesReceiver';
import { GossipQueriesReceiverState } from '../../lib/gossip/GossipQueriesReceiver';
import { GossipTimestampFilterMessage } from '../../lib/messages/GossipTimestampFilterMessage';
import { createFakeLogger, createFakePeer } from '../_test-utils';

describe('GossipQueriesReceiver', () => {
  let chainHash: Buffer;
  let sut: GossipQueriesReceiver;
  let peer: any;
  let logger: ILogger;

  beforeEach(() => {
    chainHash = Buffer.alloc(32, 1);
    peer = createFakePeer();
    logger = createFakeLogger();
    sut = new GossipQueriesReceiver(chainHash, peer, logger);
  });

  describe('initial state', () => {
    it("in 'inactive' state", () => {
      expect(sut.state).to.equal(GossipQueriesReceiverState.Idle);
    });

    it('has uint32_max start', () => {
      expect(sut.firstTimestamp).to.equal(4294967295);
    });

    it('has zero range', () => {
      expect(sut.timestampRange).to.equal(0);
    });
  });

  describe('.activate()', () => {
    it('should send gossip_timestamp_filter', () => {
      sut.activate(1590174550, 4294967294);
      expect(peer.sendMessage.callCount).to.equal(1);

      const msg: GossipTimestampFilterMessage = peer.sendMessage.args[0][0];
      expect(msg.firstTimestamp).to.equal(1590174550);
      expect(msg.timestampRange).to.equal(4294967294);
    });

    it("should transition state to 'receiving'", () => {
      sut.activate(1590174550, 4294967294);
      expect(sut.state).to.equal(GossipQueriesReceiverState.Receiving);
    });

    it('sets timestamp', () => {
      sut.activate(1590174550, 4294967294);
      expect(sut.firstTimestamp).to.equal(1590174550);
    });

    it('sets range', () => {
      sut.activate(1590174550, 4294967294);
      expect(sut.timestampRange).to.equal(4294967294);
    });
  });

  describe('.deactivate()', () => {
    it('should send gossip_timestamp_filter', () => {
      sut.deactivate();
      expect(peer.sendMessage.callCount).to.equal(1);

      const msg: GossipTimestampFilterMessage = peer.sendMessage.args[0][0];
      expect(msg.firstTimestamp).to.equal(4294967295);
      expect(msg.timestampRange).to.equal(0);
    });

    it("should transition state to 'idle'", () => {
      sut.deactivate();
      expect(sut.state).to.equal(GossipQueriesReceiverState.Idle);
    });

    it('sets timestamp', () => {
      sut.deactivate();
      expect(sut.firstTimestamp).to.equal(4294967295);
    });

    it('sets range', () => {
      sut.deactivate();
      expect(sut.timestampRange).to.equal(0);
    });
  });
});