bp_nouveau_activity_localize_scripts( array $params = array() )

function bp_nouveau_activity_localize_scripts( $params = array() ) {
	if ( ! bp_is_activity_component() &&
	     ! bp_is_group_activity() &&
	     ! bp_is_media_component() &&
	     ! bp_is_media_directory() &&
	     ! bp_is_group_media() &&
	     ! bp_is_group_albums()
	) { // media popup overlay needs activity scripts
		return $params;
	}

	$activity_params = array(
		'user_id'        => bp_loggedin_user_id(),
		'object'         => 'user',
		'backcompat'     => (bool) has_action( 'bp_activity_post_form_options' ),
		'post_nonce'     => wp_create_nonce( 'post_update', '_wpnonce_post_update' ),
		'excluded_hosts' => []
	);

	$user_displayname = bp_get_loggedin_user_fullname();

	if ( buddypress()->avatar->show_avatars ) {
		$width  = bp_core_avatar_thumb_width();
		$height = bp_core_avatar_thumb_height();
		$activity_params = array_merge( $activity_params, array(
			'avatar_url'        => bp_get_loggedin_user_avatar( array(
				'width'  => $width,
				'height' => $height,
				'html'   => false,
			) ),
			'avatar_width'      => $width,
			'avatar_height'     => $height,
			'user_display_name' => bp_get_loggedin_user_fullname(),
			'user_domain'       => bp_loggedin_user_domain(),
			'avatar_alt'        => sprintf(
			/* translators: %s = member name */
				__( 'Profile photo of %s', 'buddyboss' ),
				$user_displayname
			),
		) );
	}

	if ( bp_is_activity_autoload_active() ) {
		$activity_params['autoload'] = true;
	}

	if ( bp_is_activity_link_preview_active() ) {
		$activity_params['link_preview'] = true;
	}

	/**
	 * Filters the included, specific, Action buttons.
	 *
	 * @since BuddyPress 3.0.0
	 *
	 * @param array $value The array containing the button params. Must look like:
	 * array( 'buttonid' => array(
	 *  'id'      => 'buttonid',                            // Id for your action
	 *  'caption' => __( 'Button caption', 'text-domain' ),
	 *  'icon'    => 'dashicons-*',                         // The dashicon to use
	 *  'order'   => 0,
	 *  'handle'  => 'button-script-handle',                // The handle of the registered script to enqueue
	 * );
	 */
	$activity_buttons = apply_filters( 'bp_nouveau_activity_buttons', array() );

	if ( ! empty( $activity_buttons ) ) {
		$activity_params['buttons'] = bp_sort_by_key( $activity_buttons, 'order', 'num' );

		// Enqueue Buttons scripts and styles
		foreach ( $activity_params['buttons'] as $key_button => $buttons ) {
			if ( empty( $buttons['handle'] ) ) {
				continue;
			}

			if ( wp_style_is( $buttons['handle'], 'registered' ) ) {
				wp_enqueue_style( $buttons['handle'] );
			}

			if ( wp_script_is( $buttons['handle'], 'registered' ) ) {
				wp_enqueue_script( $buttons['handle'] );
			}

			unset( $activity_params['buttons'][ $key_button ]['handle'] );
		}
	}

	// Activity Objects
	if ( ! bp_is_single_item() && ! bp_is_user() ) {
		$activity_objects = array(
			'profile' => array(
				'text'                     => __( 'Post in: Profile', 'buddyboss' ),
				'autocomplete_placeholder' => '',
				'priority'                 => 5,
			),
		);

		// the groups component is active & the current user is at least a member of 1 group
		if ( bp_is_active( 'groups' ) && bp_has_groups( array( 'user_id' => bp_loggedin_user_id(), 'max' => 1 ) ) ) {
			$activity_objects['group'] = array(
				'text'                     => __( 'Post in: Group', 'buddyboss' ),
				'autocomplete_placeholder' => __( 'Start typing the group name…', 'buddyboss' ),
				'priority'                 => 10,
			);
		}

		/**
		 * Filters the activity objects to apply for localized javascript data.
		 *
		 * @since BuddyPress 3.0.0
		 *
		 * @param array $activity_objects Array of activity objects.
		 */
		$activity_params['objects'] = apply_filters( 'bp_nouveau_activity_objects', $activity_objects );
	}

	$activity_strings = array(
		'whatsnewPlaceholder' => sprintf( __( "Write here or use @ to mention someone.", 'buddyboss' ), bp_get_user_firstname( $user_displayname ) ),
		'whatsnewLabel'       => __( 'Post what\'s new', 'buddyboss' ),
		'whatsnewpostinLabel' => __( 'Post in', 'buddyboss' ),
		'postUpdateButton'    => __( 'Post Update', 'buddyboss' ),
		'cancelButton'        => __( 'Cancel', 'buddyboss' ),
		'commentLabel'        => __( '%d Comment', 'buddyboss' ),
		'commentsLabel'       => __( '%d Comments', 'buddyboss' ),
		'loadingMore'         => __( 'Loading...', 'buddyboss' ),
	);

    if ( bp_get_displayed_user() && ! bp_is_my_profile() ) {
        $activity_strings['whatsnewPlaceholder'] = sprintf( __( "Write something to %s...", 'buddyboss' ), bp_get_user_firstname( bp_get_displayed_user_fullname() ) );
    }

	if ( bp_is_group() ) {
		$activity_strings['whatsnewPlaceholder'] = __( 'Share something with your group...', 'buddyboss' );
		$activity_params = array_merge(
			$activity_params,
			array(
				'object'  => 'group',
				'item_id' => bp_get_current_group_id(),
			)
		);
	}

	$params['activity'] = array(
		'params'  => $activity_params,
		'strings' => $activity_strings,
	);

	return $params;
}