/*
Copyright 2023 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, screen, within } from "@testing-library/react";
import { JoinRule, MatrixError, Preset, Visibility } from "matrix-js-sdk/src/matrix";

import CreateRoomDialog from "../../../../src/components/views/dialogs/CreateRoomDialog";
import { flushPromises, getMockClientWithEventEmitter, mockClientMethodsUser } from "../../../test-utils";
import SettingsStore from "../../../../src/settings/SettingsStore";

describe("<CreateRoomDialog />", () => {
    const userId = "@alice:server.org";
    const mockClient = getMockClientWithEventEmitter({
        ...mockClientMethodsUser(userId),
        getDomain: jest.fn().mockReturnValue("server.org"),
        getClientWellKnown: jest.fn(),
        doesServerForceEncryptionForPreset: jest.fn(),
        // make every alias available
        getRoomIdForAlias: jest.fn().mockRejectedValue(new MatrixError({ errcode: "M_NOT_FOUND" })),
    });

    const getE2eeEnableToggleInputElement = () => screen.getByLabelText("Enable end-to-end encryption");
    // labelled toggle switch doesn't set the disabled attribute, only aria-disabled
    const getE2eeEnableToggleIsDisabled = () =>
        getE2eeEnableToggleInputElement().getAttribute("aria-disabled") === "true";

    beforeEach(() => {
        mockClient.doesServerForceEncryptionForPreset.mockResolvedValue(false);
        mockClient.getClientWellKnown.mockReturnValue({});
    });

    const getComponent = (props = {}) => render(<CreateRoomDialog onFinished={jest.fn()} {...props} />);

    it("should default to private room", async () => {
        getComponent();
        await flushPromises();

        expect(screen.getByText("Create a private room")).toBeInTheDocument();
    });

    it("should use defaultName from props", async () => {
        const defaultName = "My test room";
        getComponent({ defaultName });
        await flushPromises();

        expect(screen.getByLabelText("Name")).toHaveDisplayValue(defaultName);
    });

    describe("for a private room", () => {
        // default behaviour is a private room

        it("should use server .well-known default for encryption setting", async () => {
            // default to off
            mockClient.getClientWellKnown.mockReturnValue({
                "io.element.e2ee": {
                    default: false,
                },
            });
            getComponent();
            await flushPromises();

            expect(getE2eeEnableToggleInputElement()).not.toBeChecked();
            expect(getE2eeEnableToggleIsDisabled()).toBeFalsy();
            expect(
                screen.getByText(
                    "Your server admin has disabled end-to-end encryption by default in private rooms & Direct Messages.",
                ),
            ).toBeDefined();
        });

        it("should use server .well-known force_disable for encryption setting", async () => {
            // force to off
            mockClient.getClientWellKnown.mockReturnValue({
                "io.element.e2ee": {
                    default: true,
                    force_disable: true,
                },
            });
            getComponent();
            await flushPromises();

            expect(getE2eeEnableToggleInputElement()).not.toBeChecked();
            expect(getE2eeEnableToggleIsDisabled()).toBeTruthy();
            expect(
                screen.getByText(
                    "Your server admin has disabled end-to-end encryption by default in private rooms & Direct Messages.",
                ),
            ).toBeDefined();
        });

        it("should use defaultEncrypted prop", async () => {
            // default to off in server wk
            mockClient.getClientWellKnown.mockReturnValue({
                "io.element.e2ee": {
                    default: false,
                },
            });
            // but pass defaultEncrypted prop
            getComponent({ defaultEncrypted: true });
            await flushPromises();
            // encryption enabled
            expect(getE2eeEnableToggleInputElement()).toBeChecked();
            expect(getE2eeEnableToggleIsDisabled()).toBeFalsy();
        });

        it("should use defaultEncrypted prop when it is false", async () => {
            // default to off in server wk
            mockClient.getClientWellKnown.mockReturnValue({
                "io.element.e2ee": {
                    default: true,
                },
            });
            // but pass defaultEncrypted prop
            getComponent({ defaultEncrypted: false });
            await flushPromises();
            // encryption disabled
            expect(getE2eeEnableToggleInputElement()).not.toBeChecked();
            // not forced to off
            expect(getE2eeEnableToggleIsDisabled()).toBeFalsy();
        });

        it("should override defaultEncrypted when server .well-known forces disabled encryption", async () => {
            // force to off
            mockClient.getClientWellKnown.mockReturnValue({
                "io.element.e2ee": {
                    force_disable: true,
                },
            });
            getComponent({ defaultEncrypted: true });
            await flushPromises();

            // server forces encryption to disabled, even though defaultEncrypted is false
            expect(getE2eeEnableToggleInputElement()).not.toBeChecked();
            expect(getE2eeEnableToggleIsDisabled()).toBeTruthy();
            expect(
                screen.getByText(
                    "Your server admin has disabled end-to-end encryption by default in private rooms & Direct Messages.",
                ),
            ).toBeDefined();
        });

        it("should override defaultEncrypted when server forces enabled encryption", async () => {
            mockClient.doesServerForceEncryptionForPreset.mockResolvedValue(true);
            getComponent({ defaultEncrypted: false });
            await flushPromises();

            // server forces encryption to enabled, even though defaultEncrypted is true
            expect(getE2eeEnableToggleInputElement()).toBeChecked();
            expect(getE2eeEnableToggleIsDisabled()).toBeTruthy();
            expect(screen.getByText("Your server requires encryption to be enabled in private rooms.")).toBeDefined();
        });

        it("should enable encryption toggle and disable field when server forces encryption", async () => {
            mockClient.doesServerForceEncryptionForPreset.mockResolvedValue(true);
            getComponent();

            await flushPromises();
            expect(getE2eeEnableToggleInputElement()).toBeChecked();
            expect(getE2eeEnableToggleIsDisabled()).toBeTruthy();

            expect(screen.getByText("Your server requires encryption to be enabled in private rooms.")).toBeDefined();
        });

        it("should warn when trying to create a room with an invalid form", async () => {
            const onFinished = jest.fn();
            getComponent({ onFinished });
            await flushPromises();

            fireEvent.click(screen.getByText("Create room"));
            await flushPromises();

            // didn't submit room
            expect(onFinished).not.toHaveBeenCalled();
        });

        it("should create a private room", async () => {
            const onFinished = jest.fn();
            getComponent({ onFinished });
            await flushPromises();

            const roomName = "Test Room Name";
            fireEvent.change(screen.getByLabelText("Name"), { target: { value: roomName } });

            fireEvent.click(screen.getByText("Create room"));
            await flushPromises();

            expect(onFinished).toHaveBeenCalledWith(true, {
                createOpts: {
                    name: roomName,
                },
                encryption: true,
                parentSpace: undefined,
                roomType: undefined,
            });
        });
    });

    describe("for a knock room", () => {
        describe("when feature is disabled", () => {
            it("should not have the option to create a knock room", async () => {
                jest.spyOn(SettingsStore, "getValue").mockReturnValue(false);
                getComponent();
                fireEvent.click(screen.getByLabelText("Room visibility"));
                expect(screen.queryByRole("option", { name: "Ask to join" })).not.toBeInTheDocument();
            });
        });

        describe("when feature is enabled", () => {
            const onFinished = jest.fn();
            const roomName = "Test Room Name";

            beforeEach(async () => {
                onFinished.mockReset();
                jest.spyOn(SettingsStore, "getValue").mockImplementation(
                    (setting) => setting === "feature_ask_to_join",
                );
                getComponent({ onFinished });
                fireEvent.change(screen.getByLabelText("Name"), { target: { value: roomName } });
                fireEvent.click(screen.getByLabelText("Room visibility"));
                fireEvent.click(screen.getByRole("option", { name: "Ask to join" }));
            });

            it("should have a heading", () => {
                expect(screen.getByRole("heading")).toHaveTextContent("Create a room");
            });

            it("should have a hint", () => {
                expect(
                    screen.getByText(
                        "Anyone can request to join, but admins or moderators need to grant access. You can change this later.",
                    ),
                ).toBeInTheDocument();
            });

            it("should create a knock room with private visibility", async () => {
                fireEvent.click(screen.getByText("Create room"));
                await flushPromises();
                expect(onFinished).toHaveBeenCalledWith(true, {
                    createOpts: {
                        name: roomName,
                        visibility: Visibility.Private,
                    },
                    encryption: true,
                    joinRule: JoinRule.Knock,
                    parentSpace: undefined,
                    roomType: undefined,
                });
            });

            it("should create a knock room with public visibility", async () => {
                fireEvent.click(
                    screen.getByRole("checkbox", { name: "Make this room visible in the public room directory." }),
                );
                fireEvent.click(screen.getByText("Create room"));
                await flushPromises();
                expect(onFinished).toHaveBeenCalledWith(true, {
                    createOpts: {
                        name: roomName,
                        visibility: Visibility.Public,
                    },
                    encryption: true,
                    joinRule: JoinRule.Knock,
                    parentSpace: undefined,
                    roomType: undefined,
                });
            });
        });
    });

    describe("for a public room", () => {
        it("should set join rule to public defaultPublic is truthy", async () => {
            const onFinished = jest.fn();
            getComponent({ defaultPublic: true, onFinished });
            await flushPromises();

            expect(screen.getByText("Create a public room")).toBeInTheDocument();

            // e2e section is not rendered
            expect(screen.queryByText("Enable end-to-end encryption")).not.toBeInTheDocument();

            const roomName = "Test Room Name";
            fireEvent.change(screen.getByLabelText("Name"), { target: { value: roomName } });
        });

        it("should not create a public room without an alias", async () => {
            const onFinished = jest.fn();
            getComponent({ onFinished });
            await flushPromises();

            // set to public
            fireEvent.click(screen.getByLabelText("Room visibility"));
            fireEvent.click(screen.getByText("Public room"));
            expect(within(screen.getByLabelText("Room visibility")).findByText("Public room")).toBeTruthy();
            expect(screen.getByText("Create a public room")).toBeInTheDocument();

            // set name
            const roomName = "Test Room Name";
            fireEvent.change(screen.getByLabelText("Name"), { target: { value: roomName } });

            // try to create the room
            fireEvent.click(screen.getByText("Create room"));
            await flushPromises();

            // alias field invalid
            expect(screen.getByLabelText("Room address").parentElement!).toHaveClass("mx_Field_invalid");

            // didn't submit
            expect(onFinished).not.toHaveBeenCalled();
        });

        it("should create a public room", async () => {
            const onFinished = jest.fn();
            getComponent({ onFinished, defaultPublic: true });
            await flushPromises();

            // set name
            const roomName = "Test Room Name";
            fireEvent.change(screen.getByLabelText("Name"), { target: { value: roomName } });

            const roomAlias = "test";

            fireEvent.change(screen.getByLabelText("Room address"), { target: { value: roomAlias } });

            // try to create the room
            fireEvent.click(screen.getByText("Create room"));
            await flushPromises();

            expect(onFinished).toHaveBeenCalledWith(true, {
                createOpts: {
                    name: roomName,
                    preset: Preset.PublicChat,
                    room_alias_name: roomAlias,
                    visibility: Visibility.Public,
                },
                guestAccess: false,
                parentSpace: undefined,
                roomType: undefined,
            });
        });
    });
});