<?php
/**
 * MinervaTemplate.php
 */

/**
 * Extended Template class of BaseTemplate for mobile devices
 */
class MinervaTemplate extends BaseTemplate {
	/** @var bool Specify whether the page is a special page */
	protected $isSpecialPage;

	/** @var bool Whether or not the user is on the Special:MobileMenu page */
	protected $isSpecialMobileMenuPage;

	/** @var bool Specify whether the page is main page */
	protected $isMainPage;

	/**
	 * Start render the page in template
	 */
	public function execute() {
		$title = $this->getSkin()->getTitle();
		$this->isSpecialPage = $title->isSpecialPage();
		$this->isSpecialMobileMenuPage = $this->isSpecialPage &&
			$title->equals( SpecialPage::getTitleFor( 'MobileMenu' ) );
		$this->isMainPage = $title->isMainPage();
		Hooks::run( 'MinervaPreRender', [ $this ] );
		$this->render( $this->data );
	}

	/**
	 * Returns available page actions
	 * @return array
	 */
	public function getPageActions() {
		return $this->isFallbackEditor() ? [] : $this->data['page_actions'];
	}

	/**
	 * Returns template data for footer
	 *
	 * @param array $data Data used to build the page
	 * @return array
	 */
	protected function getFooterTemplateData( $data ) {
		$groups = [];

		foreach ( $data['footerlinks'] as $category => $links ) {
			$items = [];
			foreach ( $links as $link ) {
				if ( isset( $this->data[$link] ) && $data[$link] !== '' ) {
					$items[] = [
						'category' => $category,
						'name' => $link,
						'linkhtml' => $data[$link],
					];
				}
			}
			$groups[] = [
				'name' => $category,
				'items' => $items,
			];
		}

		// This turns off the footer id and allows us to distinguish the old footer with the new design
		return [
			'lastmodified' => $this->getHistoryLinkHtml( $data ),
			'headinghtml' => $data['footer-site-heading-html'],
			// Note mobile-license is only available on the mobile skin. It is outputted as part of
			// footer-info on desktop hence the conditional check.
			'licensehtml' => isset( $data['mobile-license'] ) ? $data['mobile-license'] : '',
			'lists' => $groups,
		];
	}

	/**
	 * Get the HTML for rendering the available page actions
	 * @param array $data Data used to build page actions
	 * @return string
	 */
	protected function getPageActionsHtml( $data ) {
		$actions = $this->getPageActions();
		$html = '';
		$isJSOnly = true;
		if ( $actions ) {
			foreach ( $actions as $key => $val ) {
				if ( isset( $val['is_js_only'] ) ) {
					if ( !$val['is_js_only'] ) {
						$isJSOnly = false;
					}
					unset( $val['is_js_only'] );  // no need to output this attribute
				}
				$html .= $this->makeListItem( $key, $val );
			}
			$additionalClasses = $isJSOnly ? 'jsonly' : '';
			$html = '<ul id="page-actions" class="hlist ' . $additionalClasses . '">' . $html . '</ul>';
		}
		return $html;
	}

	/**
	 * Returns the 'Last edited' message, e.g. 'Last edited on...'
	 * @param array $data Data used to build the page
	 * @return string
	 */
	protected function getHistoryLinkHtml( $data ) {
		$action = Action::getActionName( RequestContext::getMain() );
		if ( isset( $data['historyLink'] ) && $action === 'view' ) {
			$historyLink = $data['historyLink'];
			$args = [
				'clockIconClass' => MobileUI::iconClass( 'clock-gray', 'before' ),
				'arrowIconClass' => MobileUI::iconClass(
					'arrow-gray', 'element', 'mw-ui-icon-small mf-mw-ui-icon-rotate-anti-clockwise indicator' ),
				'isMainPage' => $this->getSkin()->getTitle()->isMainPage(),
				'link' => $historyLink['href'],
				'text' => $historyLink['text'],
				'username' => $historyLink['data-user-name'],
				'userGender' => $historyLink['data-user-gender'],
				'timestamp' => $historyLink['data-timestamp']
			];
			$templateParser = new TemplateParser( __DIR__ );
			return $templateParser->processTemplate( 'history', $args );
		} else {
			return '';
		}
	}

	protected function isFallbackEditor() {
		$action = $this->getSkin()->getRequest()->getVal( 'action' );
		return $action === 'edit';
	}
	/**
	 * Get page secondary actions
	 */
	protected function getSecondaryActions() {
		if ( $this->isFallbackEditor() ) {
			return [];
		}

		return $this->data['secondary_actions'];
	}

	/**
	 * Get HTML representing secondary page actions like language selector
	 * @return string
	 */
	protected function getSecondaryActionsHtml() {
		$baseClass = MobileUI::buttonClass( '', 'button' );
		$html = Html::openElement( 'div', [
			'class' => 'post-content',
			'id' => 'page-secondary-actions'
		] );
		/** @var $skin SkinMinerva $skin */
		$skin = $this->getSkin();
		// no secondary actions on the user page
		if ( $skin instanceof SkinMinerva && !$skin->getUserPageHelper()->isUserPage() ) {
			foreach ( $this->getSecondaryActions() as $el ) {
				if ( isset( $el['attributes']['class'] ) ) {
					$el['attributes']['class'] .= ' ' . $baseClass;
				} else {
					$el['attributes']['class'] = $baseClass;
				}
				$html .= Html::element( 'a', $el['attributes'], $el['label'] );
			}
		}

		return $html . Html::closeElement( 'div' );
	}

	/**
	 * Get the HTML for the content of a page
	 * @param array $data Data used to build the page
	 * @return string representing HTML of content
	 */
	protected function getContentHtml( $data ) {
		if ( !$data[ 'unstyledContent' ] ) {
			$content = Html::openElement( 'div', [
				'id' => 'bodyContent',
				'class' => 'content',
			] );
			$content .= $data[ 'bodytext' ];
			if ( isset( $data['subject-page'] ) ) {
				$content .= $data['subject-page'];
			}
			return $content . Html::closeElement( 'div' );
		} else {
			return $data[ 'bodytext' ];
		}
	}

	/**
	 * Get the HTML for rendering pre-content (e.g. heading)
	 * @param array $data Data used to build the page
	 * @return string HTML
	 */
	protected function getPreContentHtml( $data ) {
		$internalBanner = $data[ 'internalBanner' ];
		$preBodyHtml = isset( $data['prebodyhtml'] ) ? $data['prebodyhtml'] : '';
		$headingHtml = isset( $data['headinghtml'] ) ? $data['headinghtml'] : '';
		$postHeadingHtml = isset( $data['postheadinghtml'] ) ? $data['postheadinghtml'] : '';

		$html = '';
		if ( $internalBanner || $preBodyHtml || isset( $data['page_actions'] ) ) {
			$html .= $preBodyHtml
				. Html::openElement( 'div', [ 'class' => 'pre-content heading-holder' ] );

			if ( !$this->isSpecialPage ) {
				$html .= $this->getPageActionsHtml( $data );
			}

			$html .= $headingHtml;
			$html .= $postHeadingHtml;
			$html .= $data['subtitle'];
			$html .= $internalBanner;
			$html .=  '</div>';
		}
		return $html;
	}

	/**
	 * Gets HTML that needs to come after the main content and before the secondary actions.
	 *
	 * @param array $data The data used to build the page
	 * @return string
	 */
	protected function getPostContentHtml( $data ) {
		return $this->getSecondaryActionsHtml();
	}

	/**
	 * Get the HTML for rendering the wrapper for loading content
	 * @param array $data Data used to build the page
	 * @return string HTML
	 */
	protected function getContentWrapperHtml( $data ) {
		return $this->getPreContentHtml( $data ) .
			$this->getContentHtml( $data ) .
			$this->getPostContentHtml( $data );
	}

	/**
	 * Gets the main menu only on Special:MobileMenu.
	 * On other pages the menu is rendered via JS.
	 * @param array [$data] Data used to build the page
	 * @return string
	 */
	protected function getMainMenuHtml( $data ) {
		if ( $this->isSpecialMobileMenuPage ) {
			$templateParser = new TemplateParser(
				__DIR__ . '/../../resources/skins.minerva.mainMenu/' );

			return $templateParser->processTemplate( 'menu', $data['menu_data'] );
		} else {
			return '';
		}
	}

	/**
	 * Render the entire page
	 * @param array $data Data used to build the page
	 * @todo replace with template engines
	 */
	protected function render( $data ) {
		$templateParser = new TemplateParser( __DIR__ );

		// prepare template data
		$templateData = [
			'banners' => $data['banners'],
			'wgScript' => $data['wgScript'],
			'isAnon' => $data['username'] === null,
			'search' => $data['search'],
			'placeholder' => wfMessage( 'mobile-frontend-placeholder' ),
			'headelement' => $data[ 'headelement' ],
			'menuButton' => $data['menuButton'],
			'headinghtml' => $data['footer-site-heading-html'],
			// A button when clicked will submit the form
			// This is used so that on tablet devices with JS disabled the search button
			// passes the value of input to the search
			// We avoid using input[type=submit] as these cannot be easily styled as mediawiki ui icons
			// which is problematic in Opera Mini (see T140490)
			'searchButton' => Html::rawElement( 'button', [
				'id' => 'searchIcon',
				'class' => MobileUI::iconClass( 'magnifying-glass', 'element' ),
			], wfMessage( 'searchbutton' ) ),
			'secondaryButtonData' => $data['secondaryButtonData'],
			'mainmenuhtml' => $this->getMainMenuHtml( $data ),
			'contenthtml' => $this->getContentWrapperHtml( $data ),
			'footer' => $this->getFooterTemplateData( $data ),
		];
		// begin rendering
		echo $templateParser->processTemplate( 'minerva', $templateData );
		$this->printTrail();
		?>
		</body>
		</html>
		<?php
	}
}