<?php
namespace MediaWiki\Skins\Vector\Components;

use MessageLocalizer;
use Skin;
use User;

/**
 * VectorComponentMainMenu component
 */
class VectorComponentMainMenu implements VectorComponent {
	/** @var VectorComponent|null */
	private $optOut;
	/** @var VectorComponent|null */
	private $alert;
	/** @var array */
	private $sidebarData;
	/** @var array */
	private $languageData;
	/** @var MessageLocalizer */
	private $localizer;
	/** @var User */
	private $user;

	/**
	 * @param array $sidebarData
	 * @param Skin $skin
	 * @param bool $shouldLanguageAlertBeInSidebar
	 * @param array $languageData
	 */
	public function __construct(
		array $sidebarData,
		Skin $skin,
		bool $shouldLanguageAlertBeInSidebar,
		array $languageData
	) {
		$this->sidebarData = $sidebarData;
		$this->localizer = $skin->getContext();
		$this->languageData = $languageData;
		$user = $skin->getUser();
		$this->user = $user;
		if ( $user->isRegistered() ) {
			$this->optOut = new VectorComponentMainMenuActionOptOut( $skin );
		}
		if ( $shouldLanguageAlertBeInSidebar ) {
			$this->alert = new VectorComponentMainMenuActionLanguageSwitchAlert( $skin );
		}
	}

	/**
	 * @return User
	 */
	private function getUser(): User {
		return $this->user;
	}

	/**
	 * Updates side bar data so that it has a label and heading-class defined
	 * so it doesn't inherit Mustache properties from parent
	 * @param array $portletData
	 * @return array
	 */
	private function fillMissingDataPortlet( $portletData ) {
		return $portletData + [
			'label' => '',
			'heading-class' => '',
		];
	}

	/**
	 * Updates side bar data so that it has a label and heading-class defined
	 * so it doesn't inherit Mustache properties from parent
	 *
	 * @param array $sidebarData
	 * @return array
	 */
	private function fillMissingData( array $sidebarData ): array {
		$portletsFirst = $sidebarData['data-portlets-first'];
		$sidebarData['data-portlets-first'] = $this->fillMissingDataPortlet( $portletsFirst );
		$portletsRest = $sidebarData['array-portlets-rest'];
		foreach ( $portletsRest as $key => $childData ) {
			$portletsRest[$key] = $this->fillMissingDataPortlet( $childData );
		}
		$sidebarData['array-portlets-rest'] = $portletsRest;
		return $sidebarData;
	}

	/**
	 * @inheritDoc
	 */
	public function getTemplateData(): array {
		$action = $this->optOut;
		$alert = $this->alert;

		$pinnableHeader = new VectorComponentPinnableHeader(
			$this->localizer,
			false,
			'vector-main-menu',
			null
		);

		$class = $this->getUser()->isAnon() ? 'vector-main-menu-btn-dropdown-anon ' : '';
		$class .= 'vector-main-menu';
		return $this->fillMissingData( $this->sidebarData ) + [
			'id' => 'vector-main-menu',
			'class' => $class,
			'label' => $this->localizer->msg( 'vector-main-menu-label' )->text(),
			// @todo: Helper method for making icon classes would be useful.
			'heading-class' => 'mw-checkbox-hack-button mw-ui-icon mw-ui-button '
				. 'mw-ui-quiet mw-ui-icon-wikimedia-menu mw-ui-icon-element',
			'data-main-menu-action' => $action ? $action->getTemplateData() : null,
			// T295555 Add language switch alert message temporarily (to be removed).
			'data-vector-language-switch-alert' => $alert ? $alert->getTemplateData() : null,
			'data-pinnable-header' => $pinnableHeader->getTemplateData(),
			'data-languages' => $this->fillMissingDataPortlet( $this->languageData ),
		];
	}
}