/*
Copyright 2024 New Vector Ltd.
Copyright 2020 The Matrix.org Foundation C.I.C.
Copyright 2018 New Vector Ltd
Copyright 2015, 2016 OpenMarket Ltd

SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
Please see LICENSE files in the repository root for full details.
*/

import React from "react";
import classNames from "classnames";

import AccessibleButton from "../elements/AccessibleButton";
import { _t, _td, TranslationKey } from "../../../languageHandler";
import E2EIcon, { E2EState } from "./E2EIcon";
import BaseAvatar from "../avatars/BaseAvatar";
import PresenceLabel from "./PresenceLabel";

export enum PowerStatus {
    Admin = "admin",
    Moderator = "moderator",
}

const PowerLabel: Record<PowerStatus, TranslationKey> = {
    [PowerStatus.Admin]: _td("power_level|admin"),
    [PowerStatus.Moderator]: _td("power_level|mod"),
};

export type PresenceState = "offline" | "online" | "unavailable" | "io.element.unreachable";

const PRESENCE_CLASS: Record<PresenceState, string> = {
    "offline": "mx_EntityTile_offline",
    "online": "mx_EntityTile_online",
    "unavailable": "mx_EntityTile_unavailable",
    "io.element.unreachable": "mx_EntityTile_unreachable",
};

function presenceClassForMember(presenceState?: PresenceState, lastActiveAgo?: number, showPresence?: boolean): string {
    if (showPresence === false) {
        return "mx_EntityTile_online_beenactive";
    }

    // offline is split into two categories depending on whether we have
    // a last_active_ago for them.
    if (presenceState === "offline") {
        if (lastActiveAgo) {
            return PRESENCE_CLASS["offline"] + "_beenactive";
        } else {
            return PRESENCE_CLASS["offline"] + "_neveractive";
        }
    } else if (presenceState) {
        return PRESENCE_CLASS[presenceState];
    } else {
        return PRESENCE_CLASS["offline"] + "_neveractive";
    }
}

interface IProps {
    name?: string;
    nameJSX?: JSX.Element;
    title?: string;
    avatarJsx?: JSX.Element; // <BaseAvatar />
    className?: string;
    presenceState: PresenceState;
    presenceLastActiveAgo: number;
    presenceLastTs: number;
    presenceCurrentlyActive?: boolean;
    onClick(): void;
    showPresence: boolean;
    subtextLabel?: string;
    e2eStatus?: E2EState;
    powerStatus?: PowerStatus;
}

interface IState {
    hover: boolean;
}

export default class EntityTile extends React.PureComponent<IProps, IState> {
    public static defaultProps = {
        onClick: () => {},
        presenceState: "offline",
        presenceLastActiveAgo: 0,
        presenceLastTs: 0,
        showInviteButton: false,
        showPresence: true,
    };

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

        this.state = {
            hover: false,
        };
    }

    /**
     * Creates the PresenceLabel component if needed
     * @returns The PresenceLabel component if we need to render it, undefined otherwise
     */
    private getPresenceLabel(): JSX.Element | undefined {
        if (!this.props.showPresence) return;
        const activeAgo = this.props.presenceLastActiveAgo
            ? Date.now() - (this.props.presenceLastTs - this.props.presenceLastActiveAgo)
            : -1;
        return (
            <PresenceLabel
                activeAgo={activeAgo}
                currentlyActive={this.props.presenceCurrentlyActive}
                presenceState={this.props.presenceState}
            />
        );
    }

    public render(): React.ReactNode {
        const mainClassNames: Record<string, boolean> = {
            mx_EntityTile: true,
        };
        if (this.props.className) mainClassNames[this.props.className] = true;

        const presenceClass = presenceClassForMember(
            this.props.presenceState,
            this.props.presenceLastActiveAgo,
            this.props.showPresence,
        );
        mainClassNames[presenceClass] = true;

        const name = this.props.nameJSX || this.props.name;
        const nameAndPresence = (
            <div className="mx_EntityTile_details">
                <div className="mx_EntityTile_name">{name}</div>
                {this.getPresenceLabel()}
            </div>
        );

        let powerLabel;
        const powerStatus = this.props.powerStatus;
        if (powerStatus) {
            const powerText = _t(PowerLabel[powerStatus]);
            powerLabel = <div className="mx_EntityTile_power">{powerText}</div>;
        }

        let e2eIcon;
        const { e2eStatus } = this.props;
        if (e2eStatus) {
            e2eIcon = <E2EIcon status={e2eStatus} isUser={true} bordered={true} />;
        }

        const av = this.props.avatarJsx || <BaseAvatar name={this.props.name} size="36px" aria-hidden="true" />;

        // The wrapping div is required to make the magic mouse listener work, for some reason.
        return (
            <div>
                <AccessibleButton
                    className={classNames(mainClassNames)}
                    title={this.props.title}
                    onClick={this.props.onClick}
                >
                    <div className="mx_EntityTile_avatar">
                        {av}
                        {e2eIcon}
                    </div>
                    {nameAndPresence}
                    {powerLabel}
                </AccessibleButton>
            </div>
        );
    }
}