<?php
/**
 * webtrees: online genealogy
 * Copyright (C) 2016 webtrees development team
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
namespace Fisharebest\Webtrees\Module;

use Fisharebest\Webtrees\Auth;
use Fisharebest\Webtrees\Fact;
use Fisharebest\Webtrees\Functions\Functions;
use Fisharebest\Webtrees\Functions\FunctionsPrint;
use Fisharebest\Webtrees\Functions\FunctionsPrintFacts;
use Fisharebest\Webtrees\GedcomTag;
use Fisharebest\Webtrees\I18N;

/**
 * Class MediaTabModule
 */
class MediaTabModule extends AbstractModule implements ModuleTabInterface {
	/** @var  Fact[] A list of facts with media objects. */
	private $facts;

	/** {@inheritdoc} */
	public function getTitle() {
		return /* I18N: Name of a module */ I18N::translate('Media');
	}

	/** {@inheritdoc} */
	public function getDescription() {
		return /* I18N: Description of the “Media” module */ I18N::translate('A tab showing the media objects linked to an individual.');
	}

	/** {@inheritdoc} */
	public function defaultTabOrder() {
		return 50;
	}

	/** {@inheritdoc} */
	public function hasTabContent() {
		global $WT_TREE;

		return Auth::isEditor($WT_TREE) || $this->getFactsWithMedia();
	}

	/** {@inheritdoc} */
	public function isGrayedOut() {
		return !$this->getFactsWithMedia();
	}

	/** {@inheritdoc} */
	public function getTabContent() {
		global $WT_TREE, $controller;

		ob_start();
		echo '<table class="facts_table">';
		foreach ($this->getFactsWithMedia() as $fact) {
			if ($fact->getTag() == 'OBJE') {
				FunctionsPrintFacts::printMainMedia($fact, 1);
			} else {
				for ($i = 2; $i < 4; ++$i) {
					FunctionsPrintFacts::printMainMedia($fact, $i);
				}
			}
		}
		if (!$this->getFactsWithMedia()) {
			echo '<tr><td id="no_tab4" colspan="2" class="facts_value">', I18N::translate('There are no media objects for this individual.'), '</td></tr>';
		}
		// New media link
		if ($controller->record->canEdit() && $WT_TREE->getPreference('MEDIA_UPLOAD') >= Auth::accessLevel($controller->record->getTree())) {
			?>
			<tr>
				<td class="facts_label">
					<?php echo GedcomTag::getLabel('OBJE'); ?>
				</td>
				<td class="facts_value">
					<a href="#" onclick="window.open('addmedia.php?action=showmediaform&amp;linktoid=<?php echo $controller->record->getXref(); ?>&amp;ged=<?php echo $controller->record->getTree()->getNameUrl(); ?>', '_blank', edit_window_specs); return false;">
						<?php echo I18N::translate('Add a media object'); ?>
					</a>
					<?php echo FunctionsPrint::helpLink('OBJE'); ?>
					<br>
					<a href="#" onclick="window.open('inverselink.php?linktoid=<?php echo $controller->record->getXref(); ?>&amp;ged=<?php echo $WT_TREE->getNameUrl(); ?>&amp;linkto=person', '_blank', find_window_specs); return false;">
						<?php echo I18N::translate('Link to an existing media object'); ?>
					</a>
				</td>
			</tr>
		<?php
		}
		?>
		</table>
		<?php
		return '<div id="' . $this->getName() . '_content">' . ob_get_clean() . '</div>';
	}

	/**
	 * Get all the facts for an individual which contain media objects.
	 *
	 * @return Fact[]
	 */
	private function getFactsWithMedia() {
		global $controller;

		if ($this->facts === null) {
			$facts = $controller->record->getFacts();
			foreach ($controller->record->getSpouseFamilies() as $family) {
				if ($family->canShow()) {
					foreach ($family->getFacts() as $fact) {
						$facts[] = $fact;
					}
				}
			}
			$this->facts = [];
			foreach ($facts as $fact) {
				if (preg_match('/(?:^1|\n\d) OBJE @' . WT_REGEX_XREF . '@/', $fact->getGedcom())) {
					$this->facts[] = $fact;
				}
			}
			Functions::sortFacts($this->facts);
		}

		return $this->facts;
	}

	/** {@inheritdoc} */
	public function canLoadAjax() {
		return !Auth::isSearchEngine(); // Search engines cannot use AJAX
	}

	/** {@inheritdoc} */
	public function getPreLoadContent() {
		return '';
	}
}
