/* eslint-disable @typescript-eslint/no-explicit-any */
// tslint:disable: no-unused-expression

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

import {
  ChannelsQuery,
  ChannelsQueryState,
} from '../../lib/gossip/ChannelsQuery';
import { QueryShortChannelIdsMessage } from '../../lib/messages/QueryShortChannelIdsMessage';
import { ReplyShortChannelIdsEndMessage } from '../../lib/messages/ReplyShortChannelIdsEndMessage';
import { IMessageSender } from '../../lib/Peer';
import { createFakeLogger, createFakePeer } from '../_test-utils';

describe('ChannelsQuery', () => {
  let chainHash: Buffer;
  let sut: ChannelsQuery;
  let peer: sinon.SinonStubbedInstance<IMessageSender>;
  let logger: ILogger;
  let promise: Promise<void>;

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

  describe('event: receive reply_short_channel_ids_end', () => {
    beforeEach(() => {
      // mock that we sent a message
      (sut as any)._state = ChannelsQueryState.Active;
    });

    describe('msg_complete=true, queued_scids=false', () => {
      beforeEach(() => {
        promise = sut.query(new ShortChannelId(1, 1, 1));
        peer.sendMessage.reset();
        const msg = new ReplyShortChannelIdsEndMessage();
        msg.complete = true;
        sut.handleReplyShortChannelIdsEnd(msg);
      });

      it('should not send any message', () => {
        expect(peer.sendMessage.callCount).to.equal(0);
      });

      it('should be in complete state', () => {
        expect(sut.state).to.equal(ChannelsQueryState.Complete);
      });

      it('should resolve', async () => {
        await promise;
      });
    });

    describe('msg_complete=true, queued_scids=true', () => {
      beforeEach(() => {
        promise = sut.query(new ShortChannelId(1, 1, 1));
        peer.sendMessage.reset();
        (sut as any)._queue.push(new ShortChannelId(2, 2, 2));
        const msg = new ReplyShortChannelIdsEndMessage();
        msg.complete = true;
        sut.handleReplyShortChannelIdsEnd(msg);
      });

      it('should send next query batch', () => {
        const msg = peer.sendMessage.args[0][0];
        expect(msg).to.be.instanceOf(QueryShortChannelIdsMessage);
        expect((msg as any).shortChannelIds).to.deep.equal([
          new ShortChannelId(2, 2, 2),
        ]);
      });

      it('should be in active state', () => {
        expect(sut.state).to.equal(ChannelsQueryState.Active);
      });
    });

    describe('msg_complete=false, queued_scids=false', () => {
      beforeEach(() => {
        promise = sut.query(new ShortChannelId(1, 1, 1));
        peer.sendMessage.reset();
        const msg = new ReplyShortChannelIdsEndMessage();
        msg.complete = false;
        sut.handleReplyShortChannelIdsEnd(msg);
      });

      it('should not send any message', () => {
        promise.catch(() => {
          expect(peer.sendMessage.callCount).to.equal(0);
        });
      });

      it('should be in failed state', () => {
        promise.catch(() => {
          expect(sut.state).to.equal(ChannelsQueryState.Failed);
        });
      });

      it('should reject', (done) => {
        promise.catch(() => done());
      });
    });

    describe('msg_complete=false, queued_scids=true', () => {
      beforeEach(() => {
        promise = sut.query(new ShortChannelId(1, 1, 1));
        peer.sendMessage.reset();
        (sut as any)._queue.push(new ShortChannelId(2, 2, 2));
        const msg = new ReplyShortChannelIdsEndMessage();
        msg.complete = false;
        sut.handleReplyShortChannelIdsEnd(msg);
      });

      it('should not send any message', () => {
        promise.catch(() => {
          expect(peer.sendMessage.callCount).to.equal(0);
        });
      });

      it('should be in failed state', () => {
        promise.catch(() => {
          expect(sut.state).to.equal(ChannelsQueryState.Failed);
        });
      });

      it('should reject', (done) => {
        promise.catch(() => done());
      });
    });

    describe('msg_complete=false, status!=Active', () => {
      it('not cause a failure', (done) => {
        promise = sut.query(new ShortChannelId(1, 1, 1));
        peer.sendMessage.reset();
        const msg = new ReplyShortChannelIdsEndMessage();
        msg.complete = false;
        sut.handleReplyShortChannelIdsEnd(msg);
        promise.catch(() => done());
      });
    });

    describe('msg_complete=true, status!=Active', () => {
      it('not cause a failure', async () => {
        promise = sut.query(new ShortChannelId(1, 1, 1));
        peer.sendMessage.reset();
        const msg = new ReplyShortChannelIdsEndMessage();
        msg.complete = true;
        sut.handleReplyShortChannelIdsEnd(msg);
        await promise;
      });
    });
  });
});