// tslint:disable: no-unused-expression

import { ILogger } from "@node-lightning/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);
        });
    });
});