/*
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 { act, render, RenderResult, screen } from "@testing-library/react";
import userEvent from "@testing-library/user-event";
import { ClientEvent, MatrixClient, MatrixEvent, SyncState } from "matrix-js-sdk/src/matrix";
import { sleep } from "matrix-js-sdk/src/utils";
import { mocked } from "jest-mock";

import {
    VoiceBroadcastInfoState,
    VoiceBroadcastRecording,
    VoiceBroadcastRecordingPip,
} from "../../../../src/voice-broadcast";
import { flushPromises, stubClient } from "../../../test-utils";
import { mkVoiceBroadcastInfoStateEvent } from "../../utils/test-utils";
import { requestMediaPermissions } from "../../../../src/utils/media/requestMediaPermissions";
import MediaDeviceHandler, { MediaDeviceKindEnum } from "../../../../src/MediaDeviceHandler";
import dis from "../../../../src/dispatcher/dispatcher";
import { Action } from "../../../../src/dispatcher/actions";

jest.mock("../../../../src/dispatcher/dispatcher");
jest.mock("../../../../src/utils/media/requestMediaPermissions");

// mock RoomAvatar, because it is doing too much fancy stuff
jest.mock("../../../../src/components/views/avatars/RoomAvatar", () => ({
    __esModule: true,
    default: jest.fn().mockImplementation(({ room }) => {
        return <div data-testid="room-avatar">room avatar: {room.name}</div>;
    }),
}));

// mock VoiceRecording because it contains all the audio APIs
jest.mock("../../../../src/audio/VoiceRecording", () => ({
    VoiceRecording: jest.fn().mockReturnValue({
        disableMaxLength: jest.fn(),
        liveData: {
            onUpdate: jest.fn(),
        },
        start: jest.fn(),
    }),
}));

describe("VoiceBroadcastRecordingPip", () => {
    const roomId = "!room:example.com";
    let client: MatrixClient;
    let infoEvent: MatrixEvent;
    let recording: VoiceBroadcastRecording;
    let renderResult: RenderResult;

    const renderPip = async (state: VoiceBroadcastInfoState) => {
        infoEvent = mkVoiceBroadcastInfoStateEvent(roomId, state, client.getUserId() || "", client.getDeviceId() || "");
        recording = new VoiceBroadcastRecording(infoEvent, client, state);
        jest.spyOn(recording, "pause");
        jest.spyOn(recording, "resume");
        renderResult = render(<VoiceBroadcastRecordingPip recording={recording} />);
        await act(async () => {
            flushPromises();
        });
    };

    const itShouldShowTheBroadcastRoom = () => {
        it("should show the broadcast room", () => {
            expect(dis.dispatch).toHaveBeenCalledWith({
                action: Action.ViewRoom,
                room_id: roomId,
                metricsTrigger: undefined,
            });
        });
    };

    beforeAll(() => {
        client = stubClient();
        mocked(requestMediaPermissions).mockResolvedValue({
            getTracks: (): Array<MediaStreamTrack> => [],
        } as unknown as MediaStream);
        jest.spyOn(MediaDeviceHandler, "getDevices").mockResolvedValue({
            [MediaDeviceKindEnum.AudioInput]: [
                {
                    deviceId: "d1",
                    label: "Device 1",
                } as MediaDeviceInfo,
                {
                    deviceId: "d2",
                    label: "Device 2",
                } as MediaDeviceInfo,
            ],
            [MediaDeviceKindEnum.AudioOutput]: [],
            [MediaDeviceKindEnum.VideoInput]: [],
        });
        jest.spyOn(MediaDeviceHandler.instance, "setDevice").mockImplementation();
    });

    describe("when rendering a started recording", () => {
        beforeEach(async () => {
            await renderPip(VoiceBroadcastInfoState.Started);
        });

        it("should render as expected", () => {
            expect(renderResult.container).toMatchSnapshot();
        });

        describe("and selecting another input device", () => {
            beforeEach(async () => {
                await act(async () => {
                    await userEvent.click(screen.getByLabelText("Change input device"));
                    await userEvent.click(screen.getByText("Device 1"));
                });
            });

            it("should select the device and pause and resume the broadcast", () => {
                expect(MediaDeviceHandler.instance.setDevice).toHaveBeenCalledWith(
                    "d1",
                    MediaDeviceKindEnum.AudioInput,
                );
                expect(recording.pause).toHaveBeenCalled();
                expect(recording.resume).toHaveBeenCalled();
            });
        });

        describe("and clicking the room name", () => {
            beforeEach(async () => {
                await userEvent.click(screen.getByText("My room"));
            });

            itShouldShowTheBroadcastRoom();
        });

        describe("and clicking the room avatar", () => {
            beforeEach(async () => {
                await userEvent.click(screen.getByText("room avatar: My room"));
            });

            itShouldShowTheBroadcastRoom();
        });

        describe("and clicking the pause button", () => {
            beforeEach(async () => {
                await userEvent.click(screen.getByLabelText("pause voice broadcast"));
            });

            it("should pause the recording", () => {
                expect(recording.getState()).toBe(VoiceBroadcastInfoState.Paused);
            });
        });

        describe("and clicking the stop button", () => {
            beforeEach(async () => {
                await userEvent.click(screen.getByLabelText("Stop Recording"));
                // modal rendering has some weird sleeps
                await sleep(100);
            });

            it("should display the confirm end dialog", () => {
                screen.getByText("Stop live broadcasting?");
            });

            describe("and confirming the dialog", () => {
                beforeEach(async () => {
                    await userEvent.click(screen.getByText("Yes, stop broadcast"));
                });

                it("should end the recording", () => {
                    expect(recording.getState()).toBe(VoiceBroadcastInfoState.Stopped);
                });
            });
        });

        describe("and there is no connection and clicking the pause button", () => {
            beforeEach(async () => {
                mocked(client.sendStateEvent).mockImplementation(() => {
                    throw new Error();
                });
                await userEvent.click(screen.getByLabelText("pause voice broadcast"));
            });

            it("should show a connection error info", () => {
                expect(screen.getByText("Connection error - Recording paused")).toBeInTheDocument();
            });

            describe("and the connection is back", () => {
                beforeEach(() => {
                    mocked(client.sendStateEvent).mockResolvedValue({ event_id: "e1" });
                    client.emit(ClientEvent.Sync, SyncState.Catchup, SyncState.Error);
                });

                it("should render a paused recording", () => {
                    expect(screen.getByLabelText("resume voice broadcast")).toBeInTheDocument();
                });
            });
        });
    });

    describe("when rendering a paused recording", () => {
        beforeEach(async () => {
            await renderPip(VoiceBroadcastInfoState.Paused);
        });

        it("should render as expected", () => {
            expect(renderResult.container).toMatchSnapshot();
        });

        describe("and clicking the resume button", () => {
            beforeEach(async () => {
                await userEvent.click(screen.getByLabelText("resume voice broadcast"));
            });

            it("should resume the recording", () => {
                expect(recording.getState()).toBe(VoiceBroadcastInfoState.Resumed);
            });
        });
    });
});