/*
Copyright 2020 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, { createRef } from "react";
import { MatrixClientPeg } from "../../MatrixClientPeg";
import defaultDispatcher from "../../dispatcher/dispatcher";
import { ActionPayload } from "../../dispatcher/payloads";
import { Action } from "../../dispatcher/actions";
import { _t } from "../../languageHandler";
import { ContextMenuButton } from "./ContextMenu";
import {USER_NOTIFICATIONS_TAB, USER_SECURITY_TAB} from "../views/dialogs/UserSettingsDialog";
import { OpenToTabPayload } from "../../dispatcher/payloads/OpenToTabPayload";
import RedesignFeedbackDialog from "../views/dialogs/RedesignFeedbackDialog";
import Modal from "../../Modal";
import LogoutDialog from "../views/dialogs/LogoutDialog";
import SettingsStore from "../../settings/SettingsStore";
import {getCustomTheme} from "../../theme";
import {getHostingLink} from "../../utils/HostingLink";
import {ButtonEvent} from "../views/elements/AccessibleButton";
import SdkConfig from "../../SdkConfig";
import {getHomePageUrl} from "../../utils/pages";
import { OwnProfileStore } from "../../stores/OwnProfileStore";
import { UPDATE_EVENT } from "../../stores/AsyncStore";
import BaseAvatar from '../views/avatars/BaseAvatar';
import classNames from "classnames";
import AccessibleTooltipButton from "../views/elements/AccessibleTooltipButton";
import { SettingLevel } from "../../settings/SettingLevel";
import IconizedContextMenu, {
    IconizedContextMenuOption,
    IconizedContextMenuOptionList
} from "../views/context_menus/IconizedContextMenu";
import TagOrderStore from "../../stores/TagOrderStore";
import * as fbEmitter from "fbemitter";
import FlairStore from "../../stores/FlairStore";

interface IProps {
    isMinimized: boolean;
}

type PartialDOMRect = Pick<DOMRect, "width" | "left" | "top" | "height">;

interface IState {
    contextMenuPosition: PartialDOMRect;
    isDarkTheme: boolean;
    selectedCommunityProfile: {
        displayName: string;
        avatarMxc: string;
    };
}

export default class UserMenu extends React.Component<IProps, IState> {
    private dispatcherRef: string;
    private themeWatcherRef: string;
    private tagStoreRef: fbEmitter.EventSubscription;
    private buttonRef: React.RefObject<HTMLButtonElement> = createRef();

    constructor(props: IProps) {
        super(props);

        this.state = {
            contextMenuPosition: null,
            isDarkTheme: this.isUserOnDarkTheme(),
            selectedCommunityProfile: null,
        };

        OwnProfileStore.instance.on(UPDATE_EVENT, this.onProfileUpdate);
    }

    private get hasHomePage(): boolean {
        return !!getHomePageUrl(SdkConfig.get());
    }

    public componentDidMount() {
        this.dispatcherRef = defaultDispatcher.register(this.onAction);
        this.themeWatcherRef = SettingsStore.watchSetting("theme", null, this.onThemeChanged);
        this.tagStoreRef = TagOrderStore.addListener(this.onTagStoreUpdate);
    }

    public componentWillUnmount() {
        if (this.themeWatcherRef) SettingsStore.unwatchSetting(this.themeWatcherRef);
        if (this.dispatcherRef) defaultDispatcher.unregister(this.dispatcherRef);
        OwnProfileStore.instance.off(UPDATE_EVENT, this.onProfileUpdate);
    }

    private isUserOnDarkTheme(): boolean {
        const theme = SettingsStore.getValue("theme");
        if (theme.startsWith("custom-")) {
            return getCustomTheme(theme.substring("custom-".length)).is_dark;
        }
        return theme === "dark";
    }

    private onTagStoreUpdate = async () => {
        if (!SettingsStore.getValue("feature_communities_v2_prototypes")) {
            return;
        }

        const selectedId = TagOrderStore.getSelectedTags()[0];
        if (!selectedId) {
            this.setState({selectedCommunityProfile: null});
            return;
        }

        // For some reason the group's profile info isn't on the js-sdk Group object but
        // is in the flair store, so get it from there.
        const profile = await FlairStore.getGroupProfileCached(MatrixClientPeg.get(), selectedId);
        const displayName = profile.name || selectedId;
        const avatarMxc = profile.avatarUrl;
        this.setState({selectedCommunityProfile: {displayName, avatarMxc}});
    };

    private onProfileUpdate = async () => {
        // the store triggered an update, so force a layout update. We don't
        // have any state to store here for that to magically happen.
        this.forceUpdate();
    };

    private onThemeChanged = () => {
        this.setState({isDarkTheme: this.isUserOnDarkTheme()});
    };

    private onAction = (ev: ActionPayload) => {
        if (ev.action !== Action.ToggleUserMenu) return; // not interested

        if (this.state.contextMenuPosition) {
            this.setState({contextMenuPosition: null});
        } else {
            if (this.buttonRef.current) this.buttonRef.current.click();
        }
    };

    private onOpenMenuClick = (ev: React.MouseEvent) => {
        ev.preventDefault();
        ev.stopPropagation();
        const target = ev.target as HTMLButtonElement;
        this.setState({contextMenuPosition: target.getBoundingClientRect()});
    };

    private onContextMenu = (ev: React.MouseEvent) => {
        ev.preventDefault();
        ev.stopPropagation();
        this.setState({
            contextMenuPosition: {
                left: ev.clientX,
                top: ev.clientY,
                width: 20,
                height: 0,
            },
        });
    };

    private onCloseMenu = () => {
        this.setState({contextMenuPosition: null});
    };

    private onSwitchThemeClick = (ev: React.MouseEvent) => {
        ev.preventDefault();
        ev.stopPropagation();

        // Disable system theme matching if the user hits this button
        SettingsStore.setValue("use_system_theme", null, SettingLevel.DEVICE, false);

        const newTheme = this.state.isDarkTheme ? "light" : "dark";
        SettingsStore.setValue("theme", null, SettingLevel.DEVICE, newTheme); // set at same level as Appearance tab
    };

    private onSettingsOpen = (ev: ButtonEvent, tabId: string) => {
        ev.preventDefault();
        ev.stopPropagation();

        const payload: OpenToTabPayload = {action: Action.ViewUserSettings, initialTabId: tabId};
        defaultDispatcher.dispatch(payload);
        this.setState({contextMenuPosition: null}); // also close the menu
    };

    private onShowArchived = (ev: ButtonEvent) => {
        ev.preventDefault();
        ev.stopPropagation();

        // TODO: Archived room view: https://github.com/vector-im/element-web/issues/14038
        // Note: You'll need to uncomment the button too.
        console.log("TODO: Show archived rooms");
    };

    private onProvideFeedback = (ev: ButtonEvent) => {
        ev.preventDefault();
        ev.stopPropagation();

        Modal.createTrackedDialog('Report bugs & give feedback', '', RedesignFeedbackDialog);
        this.setState({contextMenuPosition: null}); // also close the menu
    };

    private onSignOutClick = (ev: ButtonEvent) => {
        ev.preventDefault();
        ev.stopPropagation();

        Modal.createTrackedDialog('Logout from LeftPanel', '', LogoutDialog);
        this.setState({contextMenuPosition: null}); // also close the menu
    };

    private onHomeClick = (ev: ButtonEvent) => {
        ev.preventDefault();
        ev.stopPropagation();

        defaultDispatcher.dispatch({action: 'view_home_page'});
    };

    private renderContextMenu = (): React.ReactNode => {
        if (!this.state.contextMenuPosition) return null;

        let hostingLink;
        const signupLink = getHostingLink("user-context-menu");
        if (signupLink) {
            hostingLink = (
                <div className="mx_UserMenu_contextMenu_header">
                    {_t(
                        "<a>Upgrade</a> to your own domain", {},
                        {
                            a: sub => (
                                <a
                                    href={signupLink}
                                    target="_blank"
                                    rel="noreferrer noopener"
                                    tabIndex={-1}
                                >{sub}</a>
                            ),
                        },
                    )}
                </div>
            );
        }

        let homeButton = null;
        if (this.hasHomePage) {
            homeButton = (
                <IconizedContextMenuOption
                    iconClassName="mx_UserMenu_iconHome"
                    label={_t("Home")}
                    onClick={this.onHomeClick}
                />
            );
        }

        return <IconizedContextMenu
            // -20 to overlap the context menu by just over the width of the `...` icon and make it look connected
            left={this.state.contextMenuPosition.width + this.state.contextMenuPosition.left - 20}
            top={this.state.contextMenuPosition.top + this.state.contextMenuPosition.height}
            onFinished={this.onCloseMenu}
            className="mx_UserMenu_contextMenu"
        >
            <div className="mx_UserMenu_contextMenu_header">
                <div className="mx_UserMenu_contextMenu_name">
                        <span className="mx_UserMenu_contextMenu_displayName">
                            {OwnProfileStore.instance.displayName}
                        </span>
                    <span className="mx_UserMenu_contextMenu_userId">
                            {MatrixClientPeg.get().getUserId()}
                        </span>
                </div>
                <AccessibleTooltipButton
                    className="mx_UserMenu_contextMenu_themeButton"
                    onClick={this.onSwitchThemeClick}
                    title={this.state.isDarkTheme ? _t("Switch to light mode") : _t("Switch to dark mode")}
                >
                    <img
                        src={require("../../../res/img/element-icons/roomlist/dark-light-mode.svg")}
                        alt={_t("Switch theme")}
                        width={16}
                    />
                </AccessibleTooltipButton>
            </div>
            {hostingLink}
            <IconizedContextMenuOptionList>
                {homeButton}
                <IconizedContextMenuOption
                    iconClassName="mx_UserMenu_iconBell"
                    label={_t("Notification settings")}
                    onClick={(e) => this.onSettingsOpen(e, USER_NOTIFICATIONS_TAB)}
                />
                <IconizedContextMenuOption
                    iconClassName="mx_UserMenu_iconLock"
                    label={_t("Security & privacy")}
                    onClick={(e) => this.onSettingsOpen(e, USER_SECURITY_TAB)}
                />
                <IconizedContextMenuOption
                    iconClassName="mx_UserMenu_iconSettings"
                    label={_t("All settings")}
                    onClick={(e) => this.onSettingsOpen(e, null)}
                />
                {/* <IconizedContextMenuOption
                    iconClassName="mx_UserMenu_iconArchive"
                    label={_t("Archived rooms")}
                    onClick={this.onShowArchived}
                /> */}
                <IconizedContextMenuOption
                    iconClassName="mx_UserMenu_iconMessage"
                    label={_t("Feedback")}
                    onClick={this.onProvideFeedback}
                />
            </IconizedContextMenuOptionList>
            <IconizedContextMenuOptionList red>
                <IconizedContextMenuOption
                    iconClassName="mx_UserMenu_iconSignOut"
                    label={_t("Sign out")}
                    onClick={this.onSignOutClick}
                />
            </IconizedContextMenuOptionList>
        </IconizedContextMenu>;
    };

    public render() {
        const avatarSize = 32; // should match border-radius of the avatar

        let displayName = OwnProfileStore.instance.displayName || MatrixClientPeg.get().getUserId();
        let avatarUrl = OwnProfileStore.instance.getHttpAvatarUrl(avatarSize);

        if (this.state.selectedCommunityProfile) {
            displayName = this.state.selectedCommunityProfile.displayName
            const mxc = this.state.selectedCommunityProfile.avatarMxc;
            if (mxc) {
                avatarUrl = MatrixClientPeg.get().mxcUrlToHttp(mxc, avatarSize, avatarSize);
            } else {
                avatarUrl = null;
            }
        }

        let name = <span className="mx_UserMenu_userName">{displayName}</span>;
        let buttons = (
            <span className="mx_UserMenu_headerButtons">
                {/* masked image in CSS */}
            </span>
        );
        if (this.props.isMinimized) {
            name = null;
            buttons = null;
        }

        const classes = classNames({
            'mx_UserMenu': true,
            'mx_UserMenu_minimized': this.props.isMinimized,
        });

        return (
            <React.Fragment>
                <ContextMenuButton
                    className={classes}
                    onClick={this.onOpenMenuClick}
                    inputRef={this.buttonRef}
                    label={_t("User menu")}
                    isExpanded={!!this.state.contextMenuPosition}
                    onContextMenu={this.onContextMenu}
                >
                    <div className="mx_UserMenu_row">
                        <span className="mx_UserMenu_userAvatarContainer">
                            <BaseAvatar
                                idName={displayName}
                                name={displayName}
                                url={avatarUrl}
                                width={avatarSize}
                                height={avatarSize}
                                resizeMethod="crop"
                                className="mx_UserMenu_userAvatar"
                            />
                        </span>
                        {name}
                        {buttons}
                    </div>
                </ContextMenuButton>
                {this.renderContextMenu()}
            </React.Fragment>
        );
    }
}
