/*
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 { fireEvent, render, screen } from "@testing-library/react";
import { logger } from "matrix-js-sdk/src/logger";

import VoiceUserSettingsTab from "../../../../../../src/components/views/settings/tabs/user/VoiceUserSettingsTab";
import MediaDeviceHandler, { IMediaDevices, MediaDeviceKindEnum } from "../../../../../../src/MediaDeviceHandler";
import { flushPromises } from "../../../../../test-utils";

jest.mock("../../../../../../src/MediaDeviceHandler");
const MediaDeviceHandlerMock = mocked(MediaDeviceHandler);

describe("<VoiceUserSettingsTab />", () => {
    const getComponent = (): React.ReactElement => <VoiceUserSettingsTab />;

    const audioIn1 = {
        deviceId: "1",
        groupId: "g1",
        kind: MediaDeviceKindEnum.AudioInput,
        label: "Audio input test 1",
    };
    const videoIn1 = {
        deviceId: "2",
        groupId: "g1",
        kind: MediaDeviceKindEnum.VideoInput,
        label: "Video input test 1",
    };
    const videoIn2 = {
        deviceId: "3",
        groupId: "g1",
        kind: MediaDeviceKindEnum.VideoInput,
        label: "Video input test 2",
    };
    const defaultMediaDevices = {
        [MediaDeviceKindEnum.AudioOutput]: [],
        [MediaDeviceKindEnum.AudioInput]: [audioIn1],
        [MediaDeviceKindEnum.VideoInput]: [videoIn1, videoIn2],
    } as unknown as IMediaDevices;

    beforeEach(() => {
        jest.clearAllMocks();
        MediaDeviceHandlerMock.hasAnyLabeledDevices.mockResolvedValue(true);
        MediaDeviceHandlerMock.getDevices.mockResolvedValue(defaultMediaDevices);
        MediaDeviceHandlerMock.getVideoInput.mockReturnValue(videoIn1.deviceId);

        // @ts-ignore bad mocking
        MediaDeviceHandlerMock.instance = { setDevice: jest.fn().mockResolvedValue(undefined) };
    });

    describe("devices", () => {
        it("renders dropdowns for input devices", async () => {
            render(getComponent());
            await flushPromises();

            expect(screen.getByLabelText("Microphone")).toHaveDisplayValue(audioIn1.label);
            expect(screen.getByLabelText("Camera")).toHaveDisplayValue(videoIn1.label);
        });

        it("updates device", async () => {
            render(getComponent());
            await flushPromises();

            fireEvent.change(screen.getByLabelText("Camera"), { target: { value: videoIn2.deviceId } });

            expect(MediaDeviceHandlerMock.instance.setDevice).toHaveBeenCalledWith(
                videoIn2.deviceId,
                MediaDeviceKindEnum.VideoInput,
            );

            expect(screen.getByLabelText("Camera")).toHaveDisplayValue(videoIn2.label);
        });

        it("logs and resets device when update fails", async () => {
            // stub to avoid littering console with expected error
            jest.spyOn(logger, "error").mockImplementation(() => {});
            MediaDeviceHandlerMock.instance.setDevice.mockRejectedValue("oups!");
            render(getComponent());
            await flushPromises();

            fireEvent.change(screen.getByLabelText("Camera"), { target: { value: videoIn2.deviceId } });

            expect(MediaDeviceHandlerMock.instance.setDevice).toHaveBeenCalledWith(
                videoIn2.deviceId,
                MediaDeviceKindEnum.VideoInput,
            );

            expect(screen.getByLabelText("Camera")).toHaveDisplayValue(videoIn2.label);

            await flushPromises();

            expect(logger.error).toHaveBeenCalledWith("Failed to set device videoinput: 3");
            // reset to original
            expect(screen.getByLabelText("Camera")).toHaveDisplayValue(videoIn1.label);
        });

        it("does not render dropdown when no devices exist for type", async () => {
            render(getComponent());
            await flushPromises();

            expect(screen.getByText("No Audio Outputs detected")).toBeInTheDocument();
            expect(screen.queryByLabelText("Audio Output")).not.toBeInTheDocument();
        });
    });

    it("renders audio processing settings", () => {
        const { getByTestId } = render(getComponent());
        expect(getByTestId("voice-auto-gain")).toBeTruthy();
        expect(getByTestId("voice-noise-suppression")).toBeTruthy();
        expect(getByTestId("voice-echo-cancellation")).toBeTruthy();
    });

    it("sets and displays audio processing settings", () => {
        MediaDeviceHandlerMock.getAudioAutoGainControl.mockReturnValue(false);
        MediaDeviceHandlerMock.getAudioEchoCancellation.mockReturnValue(true);
        MediaDeviceHandlerMock.getAudioNoiseSuppression.mockReturnValue(false);

        const { getByRole } = render(getComponent());

        getByRole("switch", { name: "Automatically adjust the microphone volume" }).click();
        getByRole("switch", { name: "Noise suppression" }).click();
        getByRole("switch", { name: "Echo cancellation" }).click();

        expect(MediaDeviceHandler.setAudioAutoGainControl).toHaveBeenCalledWith(true);
        expect(MediaDeviceHandler.setAudioEchoCancellation).toHaveBeenCalledWith(false);
        expect(MediaDeviceHandler.setAudioNoiseSuppression).toHaveBeenCalledWith(true);
    });
});