/*
Copyright 2019, 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 { MatrixClient, MatrixEvent } from "matrix-js-sdk/src/matrix";
import { MockedObject } from "jest-mock";
import { render } from "@testing-library/react";

import { getMockClientWithEventEmitter, mkEvent, mkMessage, mkStubRoom } from "../../../test-utils";
import { MatrixClientPeg } from "../../../../src/MatrixClientPeg";
import * as languageHandler from "../../../../src/languageHandler";
import DMRoomMap from "../../../../src/utils/DMRoomMap";
import TextualBody from "../../../../src/components/views/messages/TextualBody";
import MatrixClientContext from "../../../../src/contexts/MatrixClientContext";
import { RoomPermalinkCreator } from "../../../../src/utils/permalinks/Permalinks";
import { MediaEventHelper } from "../../../../src/utils/MediaEventHelper";

const mkRoomTextMessage = (body: string): MatrixEvent => {
    return mkMessage({
        msg: body,
        room: "room_id",
        user: "sender",
        event: true,
    });
};

describe("<TextualBody />", () => {
    afterEach(() => {
        jest.spyOn(MatrixClientPeg, "get").mockRestore();
    });

    const defaultRoom = mkStubRoom("room_id", "test room", undefined);
    let defaultMatrixClient: MockedObject<MatrixClient>;
    beforeEach(() => {
        defaultMatrixClient = getMockClientWithEventEmitter({
            getRoom: () => defaultRoom,
            getRooms: () => [defaultRoom],
            getAccountData: (): MatrixEvent | undefined => undefined,
            isGuest: () => false,
            mxcUrlToHttp: (s: string) => s,
            getUserId: () => "@user:example.com",
        });
    });

    const defaultEvent = mkEvent({
        type: "m.room.message",
        room: "room_id",
        user: "sender",
        content: {
            body: "winks",
            msgtype: "m.emote",
        },
        event: true,
    });
    const defaultProps = {
        mxEvent: defaultEvent,
        highlights: [] as string[],
        highlightLink: "",
        onMessageAllowed: jest.fn(),
        onHeightChanged: jest.fn(),
        permalinkCreator: new RoomPermalinkCreator(defaultRoom),
        mediaEventHelper: {} as MediaEventHelper,
    };
    const getComponent = (props = {}, matrixClient: MatrixClient = defaultMatrixClient, renderingFn?: any) =>
        (renderingFn ?? render)(
            <MatrixClientContext.Provider value={matrixClient}>
                <TextualBody {...defaultProps} {...props} />
            </MatrixClientContext.Provider>,
        );

    it("renders m.emote correctly", () => {
        DMRoomMap.makeShared();

        const ev = mkEvent({
            type: "m.room.message",
            room: "room_id",
            user: "sender",
            content: {
                body: "winks",
                msgtype: "m.emote",
            },
            event: true,
        });

        const { container } = getComponent({ mxEvent: ev });
        expect(container).toHaveTextContent("* sender winks");
        const content = container.querySelector(".mx_EventTile_body");
        expect(content).toContainHTML('<span class="mx_EventTile_body" dir="auto">winks</span>');
    });

    it("renders m.notice correctly", () => {
        DMRoomMap.makeShared();

        const ev = mkEvent({
            type: "m.room.message",
            room: "room_id",
            user: "bot_sender",
            content: {
                body: "this is a notice, probably from a bot",
                msgtype: "m.notice",
            },
            event: true,
        });

        const { container } = getComponent({ mxEvent: ev });
        expect(container).toHaveTextContent(ev.getContent().body);
        const content = container.querySelector(".mx_EventTile_body");
        expect(content).toContainHTML(`<span class="mx_EventTile_body" dir="auto">${ev.getContent().body}</span>`);
    });

    describe("renders plain-text m.text correctly", () => {
        beforeEach(() => {
            DMRoomMap.makeShared();
        });

        it("simple message renders as expected", () => {
            const ev = mkRoomTextMessage("this is a plaintext message");
            const { container } = getComponent({ mxEvent: ev });
            expect(container).toHaveTextContent(ev.getContent().body);
            const content = container.querySelector(".mx_EventTile_body");
            expect(content).toContainHTML(`<span class="mx_EventTile_body" dir="auto">${ev.getContent().body}</span>`);
        });

        // If pills were rendered within a Portal/same shadow DOM then it'd be easier to test
        it("linkification get applied correctly into the DOM", () => {
            const ev = mkRoomTextMessage("Visit https://matrix.org/");
            const { container } = getComponent({ mxEvent: ev });
            expect(container).toHaveTextContent(ev.getContent().body);
            const content = container.querySelector(".mx_EventTile_body");
            expect(content).toContainHTML(
                '<span class="mx_EventTile_body" dir="auto">' +
                    'Visit <a href="https://matrix.org/" class="linkified" target="_blank" rel="noreferrer noopener">' +
                    "https://matrix.org/</a></span>",
            );
        });

        it("pillification of MXIDs get applied correctly into the DOM", () => {
            const ev = mkRoomTextMessage("Chat with @user:example.com");
            const { container } = getComponent({ mxEvent: ev });
            const content = container.querySelector(".mx_EventTile_body");
            expect(content.innerHTML).toMatchInlineSnapshot(
                `"Chat with <span><bdi><a class="mx_Pill mx_UserPill mx_UserPill_me" href="https://matrix.to/#/@user:example.com"><img class="mx_BaseAvatar mx_BaseAvatar_image" src="mxc://avatar.url/image.png" style="width: 16px; height: 16px;" alt="" data-testid="avatar-img" aria-hidden="true"><span class="mx_Pill_linkText">Member</span></a></bdi></span>"`,
            );
        });

        it("pillification of room aliases get applied correctly into the DOM", () => {
            const ev = mkRoomTextMessage("Visit #room:example.com");
            const { container } = getComponent({ mxEvent: ev });
            const content = container.querySelector(".mx_EventTile_body");
            expect(content.innerHTML).toMatchInlineSnapshot(
                `"Visit <span><bdi><a class="mx_Pill mx_RoomPill" href="https://matrix.to/#/#room:example.com"><span class="mx_Pill_linkText">#room:example.com</span></a></bdi></span>"`,
            );
        });
    });

    describe("renders formatted m.text correctly", () => {
        let matrixClient: MatrixClient;
        beforeEach(() => {
            matrixClient = getMockClientWithEventEmitter({
                getRoom: () => mkStubRoom("room_id", "room name", undefined),
                getAccountData: (): MatrixEvent | undefined => undefined,
                getUserId: () => "@me:my_server",
                getHomeserverUrl: () => "https://my_server/",
                on: (): void => undefined,
                removeListener: (): void => undefined,
                isGuest: () => false,
                mxcUrlToHttp: (s: string) => s,
            });
            DMRoomMap.makeShared();
        });

        it("italics, bold, underline and strikethrough render as expected", () => {
            const ev = mkEvent({
                type: "m.room.message",
                room: "room_id",
                user: "sender",
                content: {
                    body: "foo *baz* __bar__ <del>del</del> <u>u</u>",
                    msgtype: "m.text",
                    format: "org.matrix.custom.html",
                    formatted_body: "foo <em>baz</em> <strong>bar</strong> <del>del</del> <u>u</u>",
                },
                event: true,
            });

            const { container } = getComponent({ mxEvent: ev }, matrixClient);
            expect(container).toHaveTextContent("foo baz bar del u");
            const content = container.querySelector(".mx_EventTile_body");
            expect(content).toContainHTML(
                '<span class="mx_EventTile_body markdown-body" dir="auto">' +
                    ev.getContent().formatted_body +
                    "</span>",
            );
        });

        it("spoilers get injected properly into the DOM", () => {
            const ev = mkEvent({
                type: "m.room.message",
                room: "room_id",
                user: "sender",
                content: {
                    body: "Hey [Spoiler for movie](mxc://someserver/somefile)",
                    msgtype: "m.text",
                    format: "org.matrix.custom.html",
                    formatted_body: 'Hey <span data-mx-spoiler="movie">the movie was awesome</span>',
                },
                event: true,
            });

            const { container } = getComponent({ mxEvent: ev }, matrixClient);
            expect(container).toHaveTextContent("Hey (movie) the movie was awesome");
            const content = container.querySelector(".mx_EventTile_body");
            expect(content).toContainHTML(
                '<span class="mx_EventTile_body markdown-body" dir="auto">' +
                    "Hey <span>" +
                    '<span class="mx_EventTile_spoiler">' +
                    '<span class="mx_EventTile_spoiler_reason">(movie)</span>&nbsp;' +
                    '<span class="mx_EventTile_spoiler_content"><span>the movie was awesome</span></span>' +
                    "</span></span></span>",
            );
        });

        it("linkification is not applied to code blocks", () => {
            const ev = mkEvent({
                type: "m.room.message",
                room: "room_id",
                user: "sender",
                content: {
                    body: "Visit `https://matrix.org/`\n```\nhttps://matrix.org/\n```",
                    msgtype: "m.text",
                    format: "org.matrix.custom.html",
                    formatted_body: "<p>Visit <code>https://matrix.org/</code></p>\n<pre>https://matrix.org/\n</pre>\n",
                },
                event: true,
            });

            const { container } = getComponent({ mxEvent: ev }, matrixClient);
            expect(container).toHaveTextContent("Visit https://matrix.org/ 1https://matrix.org/");
            const content = container.querySelector(".mx_EventTile_body");
            expect(content).toMatchSnapshot();
        });

        // If pills were rendered within a Portal/same shadow DOM then it'd be easier to test
        it("pills get injected correctly into the DOM", () => {
            const ev = mkEvent({
                type: "m.room.message",
                room: "room_id",
                user: "sender",
                content: {
                    body: "Hey User",
                    msgtype: "m.text",
                    format: "org.matrix.custom.html",
                    formatted_body: 'Hey <a href="https://matrix.to/#/@user:server">Member</a>',
                },
                event: true,
            });

            const { container } = getComponent({ mxEvent: ev }, matrixClient);
            expect(container).toHaveTextContent("Hey Member");
            const content = container.querySelector(".mx_EventTile_body");
            expect(content).toMatchSnapshot();
        });

        it("pills do not appear in code blocks", () => {
            const ev = mkEvent({
                type: "m.room.message",
                room: "room_id",
                user: "sender",
                content: {
                    body: "`@room`\n```\n@room\n```",
                    msgtype: "m.text",
                    format: "org.matrix.custom.html",
                    formatted_body: "<p><code>@room</code></p>\n<pre><code>@room\n</code></pre>\n",
                },
                event: true,
            });

            const { container } = getComponent({ mxEvent: ev });
            expect(container).toHaveTextContent("@room 1@room");
            const content = container.querySelector(".mx_EventTile_body");
            expect(content).toMatchSnapshot();
        });

        it("pills do not appear for event permalinks", () => {
            const ev = mkEvent({
                type: "m.room.message",
                room: "room_id",
                user: "sender",
                content: {
                    body:
                        "An [event link](https://matrix.to/#/!ZxbRYPQXDXKGmDnJNg:example.com/" +
                        "$16085560162aNpaH:example.com?via=example.com) with text",
                    msgtype: "m.text",
                    format: "org.matrix.custom.html",
                    formatted_body:
                        'An <a href="https://matrix.to/#/!ZxbRYPQXDXKGmDnJNg:example.com/' +
                        '$16085560162aNpaH:example.com?via=example.com">event link</a> with text',
                },
                event: true,
            });

            const { container } = getComponent({ mxEvent: ev }, matrixClient);
            expect(container).toHaveTextContent("An event link with text");
            const content = container.querySelector(".mx_EventTile_body");
            expect(content).toContainHTML(
                '<span class="mx_EventTile_body markdown-body" dir="auto">' +
                    'An <a href="https://matrix.to/#/!ZxbRYPQXDXKGmDnJNg:example.com/' +
                    '$16085560162aNpaH:example.com?via=example.com" ' +
                    'rel="noreferrer noopener">event link</a> with text</span>',
            );
        });

        it("pills appear for room links with vias", () => {
            const ev = mkEvent({
                type: "m.room.message",
                room: "room_id",
                user: "sender",
                content: {
                    body:
                        "A [room link](https://matrix.to/#/!ZxbRYPQXDXKGmDnJNg:example.com" +
                        "?via=example.com&via=bob.com) with vias",
                    msgtype: "m.text",
                    format: "org.matrix.custom.html",
                    formatted_body:
                        'A <a href="https://matrix.to/#/!ZxbRYPQXDXKGmDnJNg:example.com' +
                        '?via=example.com&amp;via=bob.com">room link</a> with vias',
                },
                event: true,
            });

            const { container } = getComponent({ mxEvent: ev }, matrixClient);
            expect(container).toHaveTextContent("A room name with vias");
            const content = container.querySelector(".mx_EventTile_body");
            expect(content).toContainHTML(
                '<span class="mx_EventTile_body markdown-body" dir="auto">' +
                    'A <span><bdi><a class="mx_Pill mx_RoomPill" ' +
                    'href="https://matrix.to/#/!ZxbRYPQXDXKGmDnJNg:example.com' +
                    '?via=example.com&amp;via=bob.com"' +
                    '><img class="mx_BaseAvatar mx_BaseAvatar_image" ' +
                    'src="mxc://avatar.url/room.png" ' +
                    'style="width: 16px; height: 16px;" alt="" data-testid="avatar-img" aria-hidden="true">' +
                    '<span class="mx_Pill_linkText">room name</span></a></bdi></span> with vias</span>',
            );
        });

        it("renders formatted body without html corretly", () => {
            const ev = mkEvent({
                type: "m.room.message",
                room: "room_id",
                user: "sender",
                content: {
                    body: "escaped \\*markdown\\*",
                    msgtype: "m.text",
                    format: "org.matrix.custom.html",
                    formatted_body: "escaped *markdown*",
                },
                event: true,
            });

            const { container } = getComponent({ mxEvent: ev }, matrixClient);

            const content = container.querySelector(".mx_EventTile_body");
            expect(content).toContainHTML(
                '<span class="mx_EventTile_body" dir="auto">' + "escaped *markdown*" + "</span>",
            );
        });
    });

    it("renders url previews correctly", () => {
        languageHandler.setMissingEntryGenerator((key) => key.split("|", 2)[1]);

        const matrixClient = getMockClientWithEventEmitter({
            getRoom: () => mkStubRoom("room_id", "room name", undefined),
            getAccountData: (): MatrixClient | undefined => undefined,
            getUrlPreview: (url: string) => new Promise(() => {}),
            isGuest: () => false,
            mxcUrlToHttp: (s: string) => s,
        });
        DMRoomMap.makeShared();

        const ev = mkRoomTextMessage("Visit https://matrix.org/");
        const { container, rerender } = getComponent(
            { mxEvent: ev, showUrlPreview: true, onHeightChanged: jest.fn() },
            matrixClient,
        );

        expect(container).toHaveTextContent(ev.getContent().body);
        expect(container.querySelector("a")).toHaveAttribute("href", "https://matrix.org/");

        // simulate an event edit and check the transition from the old URL preview to the new one
        const ev2 = mkEvent({
            type: "m.room.message",
            room: "room_id",
            user: "sender",
            content: {
                "m.new_content": {
                    body: "Visit https://vector.im/ and https://riot.im/",
                    msgtype: "m.text",
                },
            },
            event: true,
        });
        jest.spyOn(ev, "replacingEventDate").mockReturnValue(new Date(1993, 7, 3));
        ev.makeReplaced(ev2);

        getComponent(
            { mxEvent: ev, showUrlPreview: true, onHeightChanged: jest.fn(), replacingEventId: ev.getId() },
            matrixClient,
            rerender,
        );

        expect(container).toHaveTextContent(ev2.getContent()["m.new_content"].body + "(edited)");

        const links = ["https://vector.im/", "https://riot.im/"];
        const anchorNodes = container.querySelectorAll("a");
        Array.from(anchorNodes).forEach((node, index) => {
            expect(node).toHaveAttribute("href", links[index]);
        });
    });
});