element-call-Github/src/Header.tsx

/*
Copyright 2022-2024 New Vector Ltd

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 classNames from "classnames";
import { FC, HTMLAttributes, ReactNode, forwardRef, useMemo } from "react";
import { Link } from "react-router-dom";
import { useTranslation } from "react-i18next";
import { Heading, Text, Tooltip } from "@vector-im/compound-web";
import { UserProfileIcon } from "@vector-im/compound-design-tokens/assets/web/icons";
import { CallMembership } from "matrix-js-sdk/src/matrixrtc";

import styles from "./Header.module.css";
import Logo from "./icons/Logo.svg?react";
import { Avatar, Size } from "./Avatar";
import { EncryptionLock } from "./room/EncryptionLock";
import { useMediaQuery } from "./useMediaQuery";

interface HeaderProps extends HTMLAttributes<HTMLElement> {
  children: ReactNode;
  className?: string;
}

export const Header = forwardRef<HTMLElement, HeaderProps>(
  ({ children, className, ...rest }, ref) => {
    return (
      <header
        ref={ref}
        className={classNames(styles.header, className)}
        {...rest}
      >
        {children}
      </header>
    );
  },
);

Header.displayName = "Header";

interface LeftNavProps extends HTMLAttributes<HTMLElement> {
  children: ReactNode;
  className?: string;
  hideMobile?: boolean;
}

export const LeftNav: FC<LeftNavProps> = ({
  children,
  className,
  hideMobile,
  ...rest
}) => {
  return (
    <div
      className={classNames(
        styles.nav,
        styles.leftNav,
        { [styles.hideMobile]: hideMobile },
        className,
      )}
      {...rest}
    >
      {children}
    </div>
  );
};

interface RightNavProps extends HTMLAttributes<HTMLElement> {
  children?: ReactNode;
  className?: string;
  hideMobile?: boolean;
}

export const RightNav: FC<RightNavProps> = ({
  children,
  className,
  hideMobile,
  ...rest
}) => {
  return (
    <div
      className={classNames(
        styles.nav,
        styles.rightNav,
        { [styles.hideMobile]: hideMobile },
        className,
      )}
      {...rest}
    >
      {children}
    </div>
  );
};

interface HeaderLogoProps {
  className?: string;
}

export const HeaderLogo: FC<HeaderLogoProps> = ({ className }) => {
  const { t } = useTranslation();

  return (
    <Link
      className={classNames(styles.headerLogo, className)}
      to="/"
      aria-label={t("header_label")}
    >
      <Logo />
    </Link>
  );
};

interface RoomHeaderInfoProps {
  id: string;
  name: string;
  avatarUrl: string | null;
  encrypted: boolean;
  memberships: CallMembership[] | null;
}

export const RoomHeaderInfo: FC<RoomHeaderInfoProps> = ({
  id,
  name,
  avatarUrl,
  encrypted,
  memberships,
}) => {
  const { t } = useTranslation();
  const size = useMediaQuery("(max-width: 550px)") ? "sm" : "lg";

  // Count each member only once, regardless of how many devices they use
  const uniqueUsers = useMemo(
    () =>
      memberships ? new Set<string>(memberships.map((m) => m.sender!)) : null,
    [memberships],
  );

  return (
    <div className={styles.roomHeaderInfo} data-size={size}>
      <Avatar
        className={styles.roomAvatar}
        id={id}
        name={name}
        size={size === "sm" ? Size.SM : 56}
        src={avatarUrl ?? undefined}
      />
      <div className={styles.nameLine}>
        <Heading
          type={size === "sm" ? "body" : "heading"}
          size={size === "sm" ? "lg" : "md"}
          weight="semibold"
          data-testid="roomHeader_roomName"
        >
          {name}
        </Heading>
        <EncryptionLock encrypted={encrypted} />
      </div>
      {uniqueUsers && uniqueUsers.size > 0 && (
        <Tooltip
          label={`${uniqueUsers.size} users with ${memberships?.length} devices:\n${[...uniqueUsers.values()].join(", ")}`}
        >
          <div className={styles.participantsLine}>
            <UserProfileIcon
              width={20}
              height={20}
              aria-label={t("header_participants_label")}
            />
            <Text as="span" size="sm" weight="medium">
              {t("participant_count", { count: uniqueUsers.size })}
            </Text>
          </div>
        </Tooltip>
      )}
    </div>
  );
};