/*
Copyright 2024 New Vector Ltd.
Copyright 2022 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 { mocked } from "jest-mock";
import { ISendEventResponse, MatrixClient, RelationType, UploadResponse } from "matrix-js-sdk/src/matrix";
import { ImageInfo } from "matrix-js-sdk/src/types";
import { defer } from "matrix-js-sdk/src/utils";
import encrypt, { IEncryptedFile } from "matrix-encrypt-attachment";

import ContentMessages, { UploadCanceledError, uploadFile } from "../src/ContentMessages";
import { doMaybeLocalRoomAction } from "../src/utils/local-room";
import { createTestClient, mkEvent } from "./test-utils";
import { BlurhashEncoder } from "../src/BlurhashEncoder";

jest.mock("matrix-encrypt-attachment", () => ({ encryptAttachment: jest.fn().mockResolvedValue({}) }));

jest.mock("../src/BlurhashEncoder", () => ({
    BlurhashEncoder: {
        instance: {
            getBlurhash: jest.fn(),
        },
    },
}));

jest.mock("../src/utils/local-room", () => ({
    doMaybeLocalRoomAction: jest.fn(),
}));

const createElement = document.createElement.bind(document);

describe("ContentMessages", () => {
    const stickerUrl = "https://example.com/sticker";
    const roomId = "!room:example.com";
    const imageInfo = {} as unknown as ImageInfo;
    const text = "test sticker";
    let client: MatrixClient;
    let contentMessages: ContentMessages;
    let prom: Promise<ISendEventResponse>;

    beforeEach(() => {
        client = {
            getSafeUserId: jest.fn().mockReturnValue("@alice:test"),
            sendStickerMessage: jest.fn(),
            sendMessage: jest.fn(),
            isRoomEncrypted: jest.fn().mockReturnValue(false),
            uploadContent: jest.fn().mockResolvedValue({ content_uri: "mxc://server/file" }),
        } as unknown as MatrixClient;
        contentMessages = new ContentMessages();
        prom = Promise.resolve<ISendEventResponse>({ event_id: "$event_id" });
    });

    describe("sendStickerContentToRoom", () => {
        beforeEach(() => {
            mocked(client.sendStickerMessage).mockReturnValue(prom);
            mocked(doMaybeLocalRoomAction).mockImplementation(
                <T>(roomId: string, fn: (actualRoomId: string) => Promise<T>, client?: MatrixClient) => {
                    return fn(roomId);
                },
            );
        });

        it("should forward the call to doMaybeLocalRoomAction", async () => {
            await contentMessages.sendStickerContentToRoom(stickerUrl, roomId, null, imageInfo, text, client);
            expect(client.sendStickerMessage).toHaveBeenCalledWith(roomId, null, stickerUrl, imageInfo, text);
        });
    });

    describe("sendContentToRoom", () => {
        const roomId = "!roomId:server";
        beforeEach(() => {
            Object.defineProperty(global.Image.prototype, "src", {
                // Define the property setter
                set(src) {
                    window.setTimeout(() => this.onload());
                },
            });
            Object.defineProperty(global.Image.prototype, "height", {
                get() {
                    return 600;
                },
            });
            Object.defineProperty(global.Image.prototype, "width", {
                get() {
                    return 800;
                },
            });
            mocked(doMaybeLocalRoomAction).mockImplementation(
                <T>(roomId: string, fn: (actualRoomId: string) => Promise<T>) => fn(roomId),
            );
            mocked(BlurhashEncoder.instance.getBlurhash).mockResolvedValue("blurhashstring");
        });

        it("should use m.image for image files", async () => {
            mocked(client.uploadContent).mockResolvedValue({ content_uri: "mxc://server/file" });
            const file = new File([], "fileName", { type: "image/jpeg" });
            await contentMessages.sendContentToRoom(file, roomId, undefined, client, undefined);
            expect(client.sendMessage).toHaveBeenCalledWith(
                roomId,
                null,
                expect.objectContaining({
                    url: "mxc://server/file",
                    msgtype: "m.image",
                }),
            );
        });

        it("should use m.image for PNG files which cannot be parsed but successfully thumbnail", async () => {
            mocked(client.uploadContent).mockResolvedValue({ content_uri: "mxc://server/file" });
            const file = new File([], "fileName", { type: "image/png" });
            await contentMessages.sendContentToRoom(file, roomId, undefined, client, undefined);
            expect(client.sendMessage).toHaveBeenCalledWith(
                roomId,
                null,
                expect.objectContaining({
                    url: "mxc://server/file",
                    msgtype: "m.image",
                }),
            );
        });

        it("should fall back to m.file for invalid image files", async () => {
            mocked(client.uploadContent).mockResolvedValue({ content_uri: "mxc://server/file" });
            const file = new File([], "fileName", { type: "image/jpeg" });
            mocked(BlurhashEncoder.instance.getBlurhash).mockRejectedValue("NOT_AN_IMAGE");
            await contentMessages.sendContentToRoom(file, roomId, undefined, client, undefined);
            expect(client.sendMessage).toHaveBeenCalledWith(
                roomId,
                null,
                expect.objectContaining({
                    url: "mxc://server/file",
                    msgtype: "m.file",
                }),
            );
        });

        it("should use m.video for video files", async () => {
            jest.spyOn(document, "createElement").mockImplementation((tagName) => {
                const element = createElement(tagName);
                if (tagName === "video") {
                    (<HTMLVideoElement>element).load = jest.fn();
                    (<HTMLVideoElement>element).play = () => element.onloadeddata!(new Event("loadeddata"));
                    (<HTMLVideoElement>element).pause = jest.fn();
                    Object.defineProperty(element, "videoHeight", {
                        get() {
                            return 600;
                        },
                    });
                    Object.defineProperty(element, "videoWidth", {
                        get() {
                            return 800;
                        },
                    });
                    Object.defineProperty(element, "duration", {
                        get() {
                            return 123;
                        },
                    });
                }
                return element;
            });

            mocked(client.uploadContent).mockResolvedValue({ content_uri: "mxc://server/file" });
            const file = new File([], "fileName", { type: "video/mp4" });
            await contentMessages.sendContentToRoom(file, roomId, undefined, client, undefined);
            expect(client.sendMessage).toHaveBeenCalledWith(
                roomId,
                null,
                expect.objectContaining({
                    url: "mxc://server/file",
                    msgtype: "m.video",
                    info: expect.objectContaining({
                        duration: 123000,
                    }),
                }),
            );
        });

        it("should use m.audio for audio files", async () => {
            jest.spyOn(document, "createElement").mockImplementation((tagName) => {
                const element = createElement(tagName);
                if (tagName === "audio") {
                    Object.defineProperty(element, "duration", {
                        get() {
                            return 621;
                        },
                    });
                    Object.defineProperty(element, "src", {
                        set() {
                            element.onloadedmetadata!(new Event("loadedmetadata"));
                        },
                    });
                }
                return element;
            });

            mocked(client.uploadContent).mockResolvedValue({ content_uri: "mxc://server/file" });
            const file = new File([], "fileName", { type: "audio/mp3" });
            await contentMessages.sendContentToRoom(file, roomId, undefined, client, undefined);
            expect(client.sendMessage).toHaveBeenCalledWith(
                roomId,
                null,
                expect.objectContaining({
                    url: "mxc://server/file",
                    msgtype: "m.audio",
                    info: expect.objectContaining({
                        duration: 621000,
                    }),
                }),
            );
        });

        it("should fall back to m.file for invalid audio files", async () => {
            jest.spyOn(document, "createElement").mockImplementation((tagName) => {
                const element = createElement(tagName);
                if (tagName === "audio") {
                    Object.defineProperty(element, "src", {
                        set() {
                            element.onerror!("fail");
                        },
                    });
                }
                return element;
            });
            mocked(client.uploadContent).mockResolvedValue({ content_uri: "mxc://server/file" });
            const file = new File([], "fileName", { type: "audio/mp3" });
            await contentMessages.sendContentToRoom(file, roomId, undefined, client, undefined);
            expect(client.sendMessage).toHaveBeenCalledWith(
                roomId,
                null,
                expect.objectContaining({
                    url: "mxc://server/file",
                    msgtype: "m.file",
                }),
            );
        });

        it("should default to name 'Attachment' if file doesn't have a name", async () => {
            mocked(client.uploadContent).mockResolvedValue({ content_uri: "mxc://server/file" });
            const file = new File([], "", { type: "text/plain" });
            await contentMessages.sendContentToRoom(file, roomId, undefined, client, undefined);
            expect(client.sendMessage).toHaveBeenCalledWith(
                roomId,
                null,
                expect.objectContaining({
                    url: "mxc://server/file",
                    msgtype: "m.file",
                    body: "Attachment",
                }),
            );
        });

        it("should keep RoomUpload's total and loaded values up to date", async () => {
            mocked(client.uploadContent).mockResolvedValue({ content_uri: "mxc://server/file" });
            const file = new File([], "", { type: "text/plain" });
            const prom = contentMessages.sendContentToRoom(file, roomId, undefined, client, undefined);
            const [upload] = contentMessages.getCurrentUploads();

            expect(upload.loaded).toBe(0);
            expect(upload.total).toBe(file.size);
            const { progressHandler } = mocked(client.uploadContent).mock.calls[0][1]!;
            progressHandler!({ loaded: 123, total: 1234 });
            expect(upload.loaded).toBe(123);
            expect(upload.total).toBe(1234);
            await prom;
        });

        it("properly handles replies", async () => {
            mocked(client.uploadContent).mockResolvedValue({ content_uri: "mxc://server/file" });
            const file = new File([], "fileName", { type: "image/jpeg" });
            const replyToEvent = mkEvent({
                type: "m.room.message",
                user: "@bob:test",
                room: roomId,
                content: {},
                event: true,
            });
            await contentMessages.sendContentToRoom(file, roomId, undefined, client, replyToEvent);
            expect(client.sendMessage).toHaveBeenCalledWith(
                roomId,
                null,
                expect.objectContaining({
                    "url": "mxc://server/file",
                    "msgtype": "m.image",
                    "m.mentions": {
                        user_ids: ["@bob:test"],
                    },
                }),
            );
        });
    });

    describe("getCurrentUploads", () => {
        const file1 = new File([], "file1");
        const file2 = new File([], "file2");
        const roomId = "!roomId:server";

        beforeEach(() => {
            mocked(doMaybeLocalRoomAction).mockImplementation(
                <T>(roomId: string, fn: (actualRoomId: string) => Promise<T>) => fn(roomId),
            );
        });

        it("should return only uploads for the given relation", async () => {
            const relation = {
                rel_type: RelationType.Thread,
                event_id: "!threadId:server",
            };
            const p1 = contentMessages.sendContentToRoom(file1, roomId, relation, client, undefined);
            const p2 = contentMessages.sendContentToRoom(file2, roomId, undefined, client, undefined);

            const uploads = contentMessages.getCurrentUploads(relation);
            expect(uploads).toHaveLength(1);
            expect(uploads[0].relation).toEqual(relation);
            expect(uploads[0].fileName).toEqual("file1");
            await Promise.all([p1, p2]);
        });

        it("should return only uploads for no relation when not passed one", async () => {
            const relation = {
                rel_type: RelationType.Thread,
                event_id: "!threadId:server",
            };
            const p1 = contentMessages.sendContentToRoom(file1, roomId, relation, client, undefined);
            const p2 = contentMessages.sendContentToRoom(file2, roomId, undefined, client, undefined);

            const uploads = contentMessages.getCurrentUploads();
            expect(uploads).toHaveLength(1);
            expect(uploads[0].relation).toEqual(undefined);
            expect(uploads[0].fileName).toEqual("file2");
            await Promise.all([p1, p2]);
        });
    });

    describe("cancelUpload", () => {
        it("should cancel in-flight upload", async () => {
            const deferred = defer<UploadResponse>();
            mocked(client.uploadContent).mockReturnValue(deferred.promise);
            const file1 = new File([], "file1");
            const prom = contentMessages.sendContentToRoom(file1, roomId, undefined, client, undefined);
            const { abortController } = mocked(client.uploadContent).mock.calls[0][1]!;
            expect(abortController!.signal.aborted).toBeFalsy();
            const [upload] = contentMessages.getCurrentUploads();
            contentMessages.cancelUpload(upload);
            expect(abortController!.signal.aborted).toBeTruthy();
            deferred.resolve({} as UploadResponse);
            await prom;
        });
    });
});

describe("uploadFile", () => {
    beforeEach(() => {
        jest.clearAllMocks();
    });

    const client = createTestClient();

    it("should not encrypt the file if the room isn't encrypted", async () => {
        mocked(client.isRoomEncrypted).mockReturnValue(false);
        mocked(client.uploadContent).mockResolvedValue({ content_uri: "mxc://server/file" });
        const progressHandler = jest.fn();
        const file = new Blob([]);

        const res = await uploadFile(client, "!roomId:server", file, progressHandler);

        expect(res.url).toBe("mxc://server/file");
        expect(res.file).toBeFalsy();
        expect(encrypt.encryptAttachment).not.toHaveBeenCalled();
        expect(client.uploadContent).toHaveBeenCalledWith(file, expect.objectContaining({ progressHandler }));
    });

    it("should encrypt the file if the room is encrypted", async () => {
        mocked(client.isRoomEncrypted).mockReturnValue(true);
        mocked(client.uploadContent).mockResolvedValue({ content_uri: "mxc://server/file" });
        mocked(encrypt.encryptAttachment).mockResolvedValue({
            data: new ArrayBuffer(123),
            info: {} as IEncryptedFile,
        });
        const progressHandler = jest.fn();
        const file = new Blob(["123"]);

        const res = await uploadFile(client, "!roomId:server", file, progressHandler);

        expect(res.url).toBeFalsy();
        expect(res.file).toEqual(
            expect.objectContaining({
                url: "mxc://server/file",
            }),
        );
        expect(encrypt.encryptAttachment).toHaveBeenCalled();
        expect(client.uploadContent).toHaveBeenCalledWith(
            expect.any(Blob),
            expect.objectContaining({
                progressHandler,
                includeFilename: false,
                type: "application/octet-stream",
            }),
        );
        expect(mocked(client.uploadContent).mock.calls[0][0]).not.toBe(file);
    });

    it("should throw UploadCanceledError upon aborting the upload", async () => {
        mocked(client.isRoomEncrypted).mockReturnValue(false);
        const deferred = defer<UploadResponse>();
        mocked(client.uploadContent).mockReturnValue(deferred.promise);
        const file = new Blob([]);

        const prom = uploadFile(client, "!roomId:server", file);
        mocked(client.uploadContent).mock.calls[0][1]!.abortController!.abort();
        deferred.resolve({ content_uri: "mxc://foo/bar" });
        await expect(prom).rejects.toThrow(UploadCanceledError);
    });
});