/*
Copyright 2024 New Vector Ltd.
Copyright 2021-2023 The Matrix.org Foundation C.I.C.

SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
Please see LICENSE files in the repository root for full details.
*/

import React from "react";
import { render, screen, fireEvent, waitFor, getByRole } from "@testing-library/react";
import { mocked } from "jest-mock";
import {
    MatrixClient,
    MatrixEvent,
    PendingEventOrdering,
    Room,
    FeatureSupport,
    Thread,
} from "matrix-js-sdk/src/matrix";

import ThreadPanel, { ThreadFilterType, ThreadPanelHeader } from "../../../src/components/structures/ThreadPanel";
import MatrixClientContext from "../../../src/contexts/MatrixClientContext";
import RoomContext from "../../../src/contexts/RoomContext";
import { _t } from "../../../src/languageHandler";
import { MatrixClientPeg } from "../../../src/MatrixClientPeg";
import { RoomPermalinkCreator } from "../../../src/utils/permalinks/Permalinks";
import ResizeNotifier from "../../../src/utils/ResizeNotifier";
import { createTestClient, getRoomContext, mkRoom, mockPlatformPeg, stubClient } from "../../test-utils";
import { mkThread } from "../../test-utils/threads";
import { IRoomState } from "../../../src/components/structures/RoomView";

jest.mock("../../../src/utils/Feedback");

describe("ThreadPanel", () => {
    describe("Header", () => {
        it("expect that All filter for ThreadPanelHeader properly renders Show: All threads", () => {
            const { asFragment } = render(
                <ThreadPanelHeader filterOption={ThreadFilterType.All} setFilterOption={() => undefined} />,
            );
            expect(asFragment()).toMatchSnapshot();
        });

        it("expect that My filter for ThreadPanelHeader properly renders Show: My threads", () => {
            const { asFragment } = render(
                <ThreadPanelHeader filterOption={ThreadFilterType.My} setFilterOption={() => undefined} />,
            );
            expect(asFragment()).toMatchSnapshot();
        });

        it("expect that ThreadPanelHeader properly opens a context menu when clicked on the button", () => {
            const { container } = render(
                <ThreadPanelHeader filterOption={ThreadFilterType.All} setFilterOption={() => undefined} />,
            );
            const found = container.querySelector(".mx_ThreadPanel_dropdown");
            expect(found).toBeTruthy();
            expect(screen.queryByRole("menu")).toBeFalsy();
            fireEvent.click(found!);
            expect(screen.queryByRole("menu")).toBeTruthy();
        });

        it("expect that ThreadPanelHeader has the correct option selected in the context menu", () => {
            const { container } = render(
                <ThreadPanelHeader filterOption={ThreadFilterType.All} setFilterOption={() => undefined} />,
            );
            fireEvent.click(container.querySelector(".mx_ThreadPanel_dropdown")!);
            const found = screen.queryAllByRole("menuitemradio");
            expect(found).toHaveLength(2);
            const foundButton = screen.queryByRole("menuitemradio", { checked: true });
            expect(foundButton?.textContent).toEqual(
                `${_t("threads|all_threads")}${_t("threads|all_threads_description")}`,
            );
            expect(foundButton).toMatchSnapshot();
        });

        it("sends an unthreaded read receipt when the Mark All Threads Read button is clicked", async () => {
            const mockClient = createTestClient();
            const mockEvent = {} as MatrixEvent;
            const mockRoom = mkRoom(mockClient, "!roomId:example.org");
            mockRoom.getLastLiveEvent.mockReturnValue(mockEvent);
            const roomContextObject = {
                room: mockRoom,
            } as unknown as IRoomState;
            const { container } = render(
                <RoomContext.Provider value={roomContextObject}>
                    <MatrixClientContext.Provider value={mockClient}>
                        <ThreadPanelHeader filterOption={ThreadFilterType.All} setFilterOption={() => undefined} />
                    </MatrixClientContext.Provider>
                </RoomContext.Provider>,
            );
            fireEvent.click(getByRole(container, "button", { name: "Mark all as read" }));
            await waitFor(() =>
                expect(mockClient.sendReadReceipt).toHaveBeenCalledWith(mockEvent, expect.anything(), true),
            );
        });

        it("doesn't send a receipt if no room is in context", async () => {
            const mockClient = createTestClient();
            const { container } = render(
                <MatrixClientContext.Provider value={mockClient}>
                    <ThreadPanelHeader filterOption={ThreadFilterType.All} setFilterOption={() => undefined} />
                </MatrixClientContext.Provider>,
            );
            fireEvent.click(getByRole(container, "button", { name: "Mark all as read" }));
            await waitFor(() => expect(mockClient.sendReadReceipt).not.toHaveBeenCalled());
        });
    });

    describe("Filtering", () => {
        const ROOM_ID = "!roomId:example.org";
        const SENDER = "@alice:example.org";

        let mockClient: MatrixClient;
        let room: Room;

        const TestThreadPanel = () => (
            <MatrixClientContext.Provider value={mockClient}>
                <RoomContext.Provider
                    value={getRoomContext(room, {
                        canSendMessages: true,
                    })}
                >
                    <ThreadPanel
                        roomId={ROOM_ID}
                        onClose={jest.fn()}
                        resizeNotifier={new ResizeNotifier()}
                        permalinkCreator={new RoomPermalinkCreator(room)}
                    />
                </RoomContext.Provider>
            </MatrixClientContext.Provider>
        );

        beforeEach(async () => {
            jest.clearAllMocks();

            stubClient();
            mockPlatformPeg();
            mockClient = mocked(MatrixClientPeg.safeGet());
            Thread.setServerSideSupport(FeatureSupport.Stable);
            Thread.setServerSideListSupport(FeatureSupport.Stable);
            Thread.setServerSideFwdPaginationSupport(FeatureSupport.Stable);
            jest.spyOn(mockClient, "supportsThreads").mockReturnValue(true);

            room = new Room(ROOM_ID, mockClient, mockClient.getUserId() ?? "", {
                pendingEventOrdering: PendingEventOrdering.Detached,
            });
            jest.spyOn(room, "fetchRoomThreads").mockReturnValue(Promise.resolve());
            jest.spyOn(mockClient, "getRoom").mockReturnValue(room);
            await room.createThreadsTimelineSets();
            const [allThreads, myThreads] = room.threadsTimelineSets;
            jest.spyOn(room, "createThreadsTimelineSets").mockReturnValue(Promise.resolve([allThreads!, myThreads!]));
        });

        function toggleThreadFilter(container: HTMLElement, newFilter: ThreadFilterType) {
            fireEvent.click(container.querySelector(".mx_ThreadPanel_dropdown")!);
            const found = screen.queryAllByRole("menuitemradio");
            expect(found).toHaveLength(2);

            const allThreadsContent = `${_t("threads|all_threads")}${_t("threads|all_threads_description")}`;
            const myThreadsContent = `${_t("threads|my_threads")}${_t("threads|my_threads_description")}`;

            const allThreadsOption = found.find((it) => it.textContent === allThreadsContent);
            const myThreadsOption = found.find((it) => it.textContent === myThreadsContent);
            expect(allThreadsOption).toBeTruthy();
            expect(myThreadsOption).toBeTruthy();

            const toSelect = newFilter === ThreadFilterType.My ? myThreadsOption : allThreadsOption;
            fireEvent.click(toSelect!);
        }

        type EventData = { sender: string | null; content: string | null };

        function findEvents(container: HTMLElement): EventData[] {
            return Array.from(container.querySelectorAll(".mx_EventTile")).map((el) => {
                const sender = el.querySelector(".mx_DisambiguatedProfile_displayName")?.textContent ?? null;
                const content = el.querySelector(".mx_EventTile_body")?.textContent ?? null;
                return { sender, content };
            });
        }

        function toEventData(event: MatrixEvent): EventData {
            return { sender: event.event.sender ?? null, content: event.event.content?.body ?? null };
        }

        it("correctly filters Thread List with multiple threads", async () => {
            const otherThread = mkThread({
                room,
                client: mockClient,
                authorId: SENDER,
                participantUserIds: [mockClient.getUserId()!],
            });

            const mixedThread = mkThread({
                room,
                client: mockClient,
                authorId: SENDER,
                participantUserIds: [SENDER, mockClient.getUserId()!],
            });

            const ownThread = mkThread({
                room,
                client: mockClient,
                authorId: mockClient.getUserId()!,
                participantUserIds: [mockClient.getUserId()!],
            });

            const threadRoots = [otherThread.rootEvent, mixedThread.rootEvent, ownThread.rootEvent];
            jest.spyOn(mockClient, "fetchRoomEvent").mockImplementation((_, eventId) => {
                const event = threadRoots.find((it) => it.getId() === eventId)?.event;
                return event ? Promise.resolve(event) : Promise.reject();
            });
            const [allThreads, myThreads] = room.threadsTimelineSets;
            allThreads!.addLiveEvent(otherThread.rootEvent);
            allThreads!.addLiveEvent(mixedThread.rootEvent);
            allThreads!.addLiveEvent(ownThread.rootEvent);
            myThreads!.addLiveEvent(mixedThread.rootEvent);
            myThreads!.addLiveEvent(ownThread.rootEvent);

            let events: EventData[] = [];
            const renderResult = render(<TestThreadPanel />);
            await waitFor(() => expect(renderResult.container.querySelector(".mx_AutoHideScrollbar")).toBeFalsy());
            await waitFor(() => {
                events = findEvents(renderResult.container);
                expect(findEvents(renderResult.container)).toHaveLength(3);
            });
            expect(events[0]).toEqual(toEventData(otherThread.rootEvent));
            expect(events[1]).toEqual(toEventData(mixedThread.rootEvent));
            expect(events[2]).toEqual(toEventData(ownThread.rootEvent));
            await waitFor(() => expect(renderResult.container.querySelector(".mx_ThreadPanel_dropdown")).toBeTruthy());
            toggleThreadFilter(renderResult.container, ThreadFilterType.My);
            await waitFor(() => expect(renderResult.container.querySelector(".mx_AutoHideScrollbar")).toBeFalsy());
            await waitFor(() => {
                events = findEvents(renderResult.container);
                expect(findEvents(renderResult.container)).toHaveLength(2);
            });
            expect(events[0]).toEqual(toEventData(mixedThread.rootEvent));
            expect(events[1]).toEqual(toEventData(ownThread.rootEvent));
            toggleThreadFilter(renderResult.container, ThreadFilterType.All);
            await waitFor(() => expect(renderResult.container.querySelector(".mx_AutoHideScrollbar")).toBeFalsy());
            await waitFor(() => {
                events = findEvents(renderResult.container);
                expect(findEvents(renderResult.container)).toHaveLength(3);
            });
            expect(events[0]).toEqual(toEventData(otherThread.rootEvent));
            expect(events[1]).toEqual(toEventData(mixedThread.rootEvent));
            expect(events[2]).toEqual(toEventData(ownThread.rootEvent));
        });

        it("correctly filters Thread List with a single, unparticipated thread", async () => {
            const otherThread = mkThread({
                room,
                client: mockClient,
                authorId: SENDER,
                participantUserIds: [mockClient.getUserId()!],
            });

            const threadRoots = [otherThread.rootEvent];
            jest.spyOn(mockClient, "fetchRoomEvent").mockImplementation((_, eventId) => {
                const event = threadRoots.find((it) => it.getId() === eventId)?.event;
                return event ? Promise.resolve(event) : Promise.reject();
            });
            const [allThreads] = room.threadsTimelineSets;
            allThreads!.addLiveEvent(otherThread.rootEvent);

            let events: EventData[] = [];
            const renderResult = render(<TestThreadPanel />);
            await waitFor(() => expect(renderResult.container.querySelector(".mx_AutoHideScrollbar")).toBeFalsy());
            await waitFor(() => {
                events = findEvents(renderResult.container);
                expect(findEvents(renderResult.container)).toHaveLength(1);
            });
            expect(events[0]).toEqual(toEventData(otherThread.rootEvent));
            await waitFor(() => expect(renderResult.container.querySelector(".mx_ThreadPanel_dropdown")).toBeTruthy());
            toggleThreadFilter(renderResult.container, ThreadFilterType.My);
            await waitFor(() => expect(renderResult.container.querySelector(".mx_AutoHideScrollbar")).toBeFalsy());
            await waitFor(() => {
                events = findEvents(renderResult.container);
                expect(findEvents(renderResult.container)).toHaveLength(0);
            });
            toggleThreadFilter(renderResult.container, ThreadFilterType.All);
            await waitFor(() => expect(renderResult.container.querySelector(".mx_AutoHideScrollbar")).toBeFalsy());
            await waitFor(() => {
                events = findEvents(renderResult.container);
                expect(findEvents(renderResult.container)).toHaveLength(1);
            });
            expect(events[0]).toEqual(toEventData(otherThread.rootEvent));
        });
    });
});