/*
Copyright 2022 The Matrix.org Foundation C.I.C.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

import React from "react";
import { mocked } from "jest-mock";
import { act, fireEvent, render } from "@testing-library/react";
import { Beacon, BeaconIdentifier } from "matrix-js-sdk/src/matrix";

import LeftPanelLiveShareWarning from "../../../../src/components/views/beacon/LeftPanelLiveShareWarning";
import { OwnBeaconStore, OwnBeaconStoreEvent } from "../../../../src/stores/OwnBeaconStore";
import { flushPromises, makeBeaconInfoEvent } from "../../../test-utils";
import dispatcher from "../../../../src/dispatcher/dispatcher";
import { Action } from "../../../../src/dispatcher/actions";

jest.mock("../../../../src/stores/OwnBeaconStore", () => {
    // eslint-disable-next-line @typescript-eslint/no-var-requires
    const EventEmitter = require("events");
    class MockOwnBeaconStore extends EventEmitter {
        public getLiveBeaconIdsWithLocationPublishError = jest.fn().mockReturnValue([]);
        public getBeaconById = jest.fn();
        public getLiveBeaconIds = jest.fn().mockReturnValue([]);
        public readonly beaconUpdateErrors = new Map<BeaconIdentifier, Error>();
        public readonly beacons = new Map<BeaconIdentifier, Beacon>();
    }
    return {
        // @ts-ignore
        ...jest.requireActual("../../../../src/stores/OwnBeaconStore"),
        OwnBeaconStore: {
            instance: new MockOwnBeaconStore() as unknown as OwnBeaconStore,
        },
    };
});

describe("<LeftPanelLiveShareWarning />", () => {
    const getComponent = (props = {}) => render(<LeftPanelLiveShareWarning {...props} />);

    const roomId1 = "!room1:server";
    const roomId2 = "!room2:server";
    const aliceId = "@alive:server";

    const now = 1647270879403;
    const HOUR_MS = 3600000;

    beforeEach(() => {
        jest.spyOn(global.Date, "now").mockReturnValue(now);
        jest.spyOn(dispatcher, "dispatch")
            .mockClear()
            .mockImplementation(() => {});

        OwnBeaconStore.instance.beaconUpdateErrors.clear();
    });

    afterAll(() => {
        jest.spyOn(global.Date, "now").mockRestore();

        jest.restoreAllMocks();
    });
    // 12h old, 12h left
    const beacon1 = new Beacon(
        makeBeaconInfoEvent(aliceId, roomId1, { timeout: HOUR_MS * 24, timestamp: now - 12 * HOUR_MS }, "$1"),
    );
    // 10h left
    const beacon2 = new Beacon(makeBeaconInfoEvent(aliceId, roomId2, { timeout: HOUR_MS * 10, timestamp: now }, "$2"));

    it("renders nothing when user has no live beacons", () => {
        const { container } = getComponent();
        expect(container.innerHTML).toBeFalsy();
    });

    describe("when user has live location monitor", () => {
        beforeAll(() => {
            mocked(OwnBeaconStore.instance).getBeaconById.mockImplementation((beaconId) => {
                if (beaconId === beacon1.identifier) {
                    return beacon1;
                }
                return beacon2;
            });
        });

        beforeEach(() => {
            // @ts-ignore writing to readonly variable
            mocked(OwnBeaconStore.instance).isMonitoringLiveLocation = true;
            mocked(OwnBeaconStore.instance).getLiveBeaconIdsWithLocationPublishError.mockReturnValue([]);
            mocked(OwnBeaconStore.instance).getLiveBeaconIds.mockReturnValue([beacon2.identifier, beacon1.identifier]);
        });

        afterAll(() => {
            jest.spyOn(document, "addEventListener").mockRestore();
        });

        it("renders correctly when not minimized", () => {
            const { asFragment } = getComponent();
            expect(asFragment()).toMatchSnapshot();
        });

        it("goes to room of latest beacon when clicked", () => {
            const { container } = getComponent();
            const dispatchSpy = jest.spyOn(dispatcher, "dispatch");

            fireEvent.click(container.querySelector("[role=button]")!);

            expect(dispatchSpy).toHaveBeenCalledWith({
                action: Action.ViewRoom,
                metricsTrigger: undefined,
                // latest beacon's room
                room_id: roomId2,
                event_id: beacon2.beaconInfoId,
                highlighted: true,
                scroll_into_view: true,
            });
        });

        it("renders correctly when minimized", () => {
            const { asFragment } = getComponent({ isMinimized: true });
            expect(asFragment()).toMatchSnapshot();
        });

        it("renders location publish error", () => {
            mocked(OwnBeaconStore.instance).getLiveBeaconIdsWithLocationPublishError.mockReturnValue([
                beacon1.identifier,
            ]);
            const { asFragment } = getComponent();
            expect(asFragment()).toMatchSnapshot();
        });

        it("goes to room of latest beacon with location publish error when clicked", () => {
            mocked(OwnBeaconStore.instance).getLiveBeaconIdsWithLocationPublishError.mockReturnValue([
                beacon1.identifier,
            ]);
            const { container } = getComponent();
            const dispatchSpy = jest.spyOn(dispatcher, "dispatch");

            fireEvent.click(container.querySelector("[role=button]")!);

            expect(dispatchSpy).toHaveBeenCalledWith({
                action: Action.ViewRoom,
                metricsTrigger: undefined,
                // error beacon's room
                room_id: roomId1,
                event_id: beacon1.beaconInfoId,
                highlighted: true,
                scroll_into_view: true,
            });
        });

        it("goes back to default style when wire errors are cleared", () => {
            mocked(OwnBeaconStore.instance).getLiveBeaconIdsWithLocationPublishError.mockReturnValue([
                beacon1.identifier,
            ]);
            const { container, rerender } = getComponent();
            // error mode
            expect(container.querySelector(".mx_LeftPanelLiveShareWarning")?.textContent).toEqual(
                "An error occurred whilst sharing your live location",
            );

            act(() => {
                mocked(OwnBeaconStore.instance).getLiveBeaconIdsWithLocationPublishError.mockReturnValue([]);
                OwnBeaconStore.instance.emit(OwnBeaconStoreEvent.LocationPublishError, "abc");
            });

            rerender(<LeftPanelLiveShareWarning />);

            // default mode
            expect(container.querySelector(".mx_LeftPanelLiveShareWarning")?.textContent).toEqual(
                "You are sharing your live location",
            );
        });

        it("removes itself when user stops having live beacons", async () => {
            const { container, rerender } = getComponent({ isMinimized: true });
            // started out rendered
            expect(container.innerHTML).toBeTruthy();

            act(() => {
                // @ts-ignore writing to readonly variable
                mocked(OwnBeaconStore.instance).isMonitoringLiveLocation = false;
                OwnBeaconStore.instance.emit(OwnBeaconStoreEvent.MonitoringLivePosition);
            });

            await flushPromises();
            rerender(<LeftPanelLiveShareWarning />);

            expect(container.innerHTML).toBeFalsy();
        });

        it("refreshes beacon liveness monitors when pagevisibilty changes to visible", () => {
            OwnBeaconStore.instance.beacons.set(beacon1.identifier, beacon1);
            OwnBeaconStore.instance.beacons.set(beacon2.identifier, beacon2);
            const beacon1MonitorSpy = jest.spyOn(beacon1, "monitorLiveness");
            const beacon2MonitorSpy = jest.spyOn(beacon1, "monitorLiveness");

            jest.spyOn(document, "addEventListener").mockImplementation((_e, listener) =>
                (listener as EventListener)(new Event("")),
            );

            expect(beacon1MonitorSpy).not.toHaveBeenCalled();

            getComponent();

            expect(beacon1MonitorSpy).toHaveBeenCalled();
            expect(beacon2MonitorSpy).toHaveBeenCalled();
        });

        describe("stopping errors", () => {
            it("renders stopping error", () => {
                OwnBeaconStore.instance.beaconUpdateErrors.set(beacon2.identifier, new Error("error"));
                const { container } = getComponent();
                expect(container.textContent).toEqual("An error occurred while stopping your live location");
            });

            it("starts rendering stopping error on beaconUpdateError emit", () => {
                const { container } = getComponent();
                // no error
                expect(container.textContent).toEqual("You are sharing your live location");

                act(() => {
                    OwnBeaconStore.instance.beaconUpdateErrors.set(beacon2.identifier, new Error("error"));
                    OwnBeaconStore.instance.emit(OwnBeaconStoreEvent.BeaconUpdateError, beacon2.identifier, true);
                });

                expect(container.textContent).toEqual("An error occurred while stopping your live location");
            });

            it("renders stopping error when beacons have stopping and location errors", () => {
                mocked(OwnBeaconStore.instance).getLiveBeaconIdsWithLocationPublishError.mockReturnValue([
                    beacon1.identifier,
                ]);
                OwnBeaconStore.instance.beaconUpdateErrors.set(beacon2.identifier, new Error("error"));
                const { container } = getComponent();
                expect(container.textContent).toEqual("An error occurred while stopping your live location");
            });

            it("goes to room of latest beacon with stopping error when clicked", () => {
                mocked(OwnBeaconStore.instance).getLiveBeaconIdsWithLocationPublishError.mockReturnValue([
                    beacon1.identifier,
                ]);
                OwnBeaconStore.instance.beaconUpdateErrors.set(beacon2.identifier, new Error("error"));
                const { container } = getComponent();
                const dispatchSpy = jest.spyOn(dispatcher, "dispatch");

                fireEvent.click(container.querySelector("[role=button]")!);

                expect(dispatchSpy).toHaveBeenCalledWith({
                    action: Action.ViewRoom,
                    metricsTrigger: undefined,
                    // stopping error beacon's room
                    room_id: beacon2.roomId,
                    event_id: beacon2.beaconInfoId,
                    highlighted: true,
                    scroll_into_view: true,
                });
            });
        });
    });
});