/*
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 { fireEvent, render, RenderResult, screen, waitFor } from "@testing-library/react";
import userEvent from "@testing-library/user-event";

import PreferencesUserSettingsTab from "../../../../../../src/components/views/settings/tabs/user/PreferencesUserSettingsTab";
import { MatrixClientPeg } from "../../../../../../src/MatrixClientPeg";
import { mockPlatformPeg, stubClient } from "../../../../../test-utils";
import SettingsStore from "../../../../../../src/settings/SettingsStore";
import { SettingLevel } from "../../../../../../src/settings/SettingLevel";
import MatrixClientBackedController from "../../../../../../src/settings/controllers/MatrixClientBackedController";
import PlatformPeg from "../../../../../../src/PlatformPeg";

describe("PreferencesUserSettingsTab", () => {
    beforeEach(() => {
        mockPlatformPeg();
    });

    const renderTab = (): RenderResult => {
        return render(<PreferencesUserSettingsTab closeSettingsFn={() => {}} />);
    };

    it("should render", () => {
        const { asFragment } = renderTab();
        expect(asFragment()).toMatchSnapshot();
    });

    it("should reload when changing language", async () => {
        const reloadStub = jest.fn();
        PlatformPeg.get()!.reload = reloadStub;

        renderTab();
        const languageDropdown = await screen.findByRole("button", { name: "Language Dropdown" });
        expect(languageDropdown).toBeInTheDocument();

        await userEvent.click(languageDropdown);

        const germanOption = await screen.findByText("Deutsch");
        await userEvent.click(germanOption);
        expect(reloadStub).toHaveBeenCalled();
    });

    it("should not show spell check setting if unsupported", async () => {
        PlatformPeg.get()!.supportsSpellCheckSettings = jest.fn().mockReturnValue(false);

        renderTab();
        expect(screen.queryByRole("switch", { name: "Allow spell check" })).not.toBeInTheDocument();
    });

    it("should enable spell check", async () => {
        const spellCheckEnableFn = jest.fn();
        PlatformPeg.get()!.supportsSpellCheckSettings = jest.fn().mockReturnValue(true);
        PlatformPeg.get()!.getSpellCheckEnabled = jest.fn().mockReturnValue(false);
        PlatformPeg.get()!.setSpellCheckEnabled = spellCheckEnableFn;

        renderTab();
        const toggle = await screen.findByRole("switch", { name: "Allow spell check" });
        expect(toggle).toHaveAttribute("aria-checked", "false");

        await userEvent.click(toggle);

        expect(spellCheckEnableFn).toHaveBeenCalledWith(true);
    });

    describe("send read receipts", () => {
        beforeEach(() => {
            stubClient();
            jest.spyOn(SettingsStore, "setValue");
            jest.spyOn(window, "matchMedia").mockReturnValue({ matches: false } as MediaQueryList);
        });

        afterEach(() => {
            jest.resetAllMocks();
        });

        const getToggle = () => renderTab().getByRole("switch", { name: "Send read receipts" });

        const mockIsVersionSupported = (val: boolean) => {
            const client = MatrixClientPeg.safeGet();
            jest.spyOn(client, "doesServerSupportUnstableFeature").mockResolvedValue(false);
            jest.spyOn(client, "isVersionSupported").mockImplementation(async (version: string) => {
                if (version === "v1.4") return val;
                return false;
            });
            MatrixClientBackedController.matrixClient = client;
        };

        const mockGetValue = (val: boolean) => {
            const copyOfGetValueAt = SettingsStore.getValueAt;

            SettingsStore.getValueAt = <T,>(
                level: SettingLevel,
                name: string,
                roomId?: string,
                isExplicit?: boolean,
            ): T => {
                if (name === "sendReadReceipts") return val as T;
                return copyOfGetValueAt(level, name, roomId, isExplicit);
            };
        };

        const expectSetValueToHaveBeenCalled = (
            name: string,
            roomId: string | null,
            level: SettingLevel,
            value: boolean,
        ) => expect(SettingsStore.setValue).toHaveBeenCalledWith(name, roomId, level, value);

        describe("with server support", () => {
            beforeEach(() => {
                mockIsVersionSupported(true);
            });

            it("can be enabled", async () => {
                mockGetValue(false);
                const toggle = getToggle();

                await waitFor(() => expect(toggle).toHaveAttribute("aria-disabled", "false"));
                fireEvent.click(toggle);
                expectSetValueToHaveBeenCalled("sendReadReceipts", null, SettingLevel.ACCOUNT, true);
            });

            it("can be disabled", async () => {
                mockGetValue(true);
                const toggle = getToggle();

                await waitFor(() => expect(toggle).toHaveAttribute("aria-disabled", "false"));
                fireEvent.click(toggle);
                expectSetValueToHaveBeenCalled("sendReadReceipts", null, SettingLevel.ACCOUNT, false);
            });
        });

        describe("without server support", () => {
            beforeEach(() => {
                mockIsVersionSupported(false);
            });

            it("is forcibly enabled", async () => {
                const toggle = getToggle();
                await waitFor(() => {
                    expect(toggle).toHaveAttribute("aria-checked", "true");
                    expect(toggle).toHaveAttribute("aria-disabled", "true");
                });
            });

            it("cannot be disabled", async () => {
                mockGetValue(true);
                const toggle = getToggle();

                await waitFor(() => expect(toggle).toHaveAttribute("aria-disabled", "true"));
                fireEvent.click(toggle);
                expect(SettingsStore.setValue).not.toHaveBeenCalled();
            });
        });
    });
});