<?php
namespace Fisharebest\Webtrees;

/**
 * webtrees: online genealogy
 * Copyright (C) 2015 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/>.
 */

use PDO;
use PDOException;
use Rhumsaa\Uuid\Uuid;

/**
 * Class gedcom_favorites_WT_Module
 *
 * Note that the user favorites module simply extends this module, so ensure that the
 * logic works for both.
 */
class gedcom_favorites_WT_Module extends Module implements ModuleBlockInterface {
	/** {@inheritdoc} */
	public function getTitle() {
		return /* I18N: Name of a module */ I18N::translate('Favorites');
	}

	/** {@inheritdoc} */
	public function getDescription() {
		return /* I18N: Description of the “Favorites” module */ I18N::translate('Display and manage a family tree’s favorite pages.');
	}

	/** {@inheritdoc} */
	public function getBlock($block_id, $template = true, $cfg = null) {
		global $ctype, $controller;

		self::updateSchema(); // make sure the favorites table has been created

		$action = Filter::get('action');
		switch ($action) {
		case 'deletefav':
			$favorite_id = Filter::getInteger('favorite_id');
			if ($favorite_id) {
				self::deleteFavorite($favorite_id);
			}
			break;
		case 'addfav':
			$gid      = Filter::get('gid', WT_REGEX_XREF);
			$favnote  = Filter::get('favnote');
			$url      = Filter::getUrl('url');
			$favtitle = Filter::get('favtitle');

			if ($gid) {
				$record = GedcomRecord::getInstance($gid);
				if ($record && $record->canShow()) {
					self::addFavorite(array(
						'user_id'   => $ctype === 'user' ? Auth::id() : null,
						'gedcom_id' => WT_GED_ID,
						'gid'       => $record->getXref(),
						'type'      => $record::RECORD_TYPE,
						'url'       => null,
						'note'      => $favnote,
						'title'     => $favtitle,
					));
				}
			} elseif ($url) {
				self::addFavorite(array(
					'user_id'   => $ctype === 'user' ? Auth::id() : null,
					'gedcom_id' => WT_GED_ID,
					'gid'       => null,
					'type'      => 'URL',
					'url'       => $url,
					'note'      => $favnote,
					'title'     => $favtitle ? $favtitle : $url,
				));
			}
			break;
		}

		$block = get_block_setting($block_id, 'block', '0');

		if ($cfg) {
			foreach (array('block') as $name) {
				if (array_key_exists($name, $cfg)) {
					$$name = $cfg[$name];
				}
			}
		}

		$userfavs = $this->getFavorites($ctype === 'user' ? Auth::id() : WT_GED_ID);
		if (!is_array($userfavs)) {
			$userfavs = array();
		}

		$id = $this->getName() . $block_id;
		$class = $this->getName() . '_block';
		$title = $this->getTitle();

		if (Auth::check()) {
			$controller
				->addExternalJavascript(WT_AUTOCOMPLETE_JS_URL)
				->addInlineJavascript('autocomplete();');
		}

		$content = '';
		if ($userfavs) {
			foreach ($userfavs as $key=>$favorite) {
				if (isset($favorite['id'])) {
					$key = $favorite['id'];
				}
				$removeFavourite = '<a class="font9" href="index.php?ctype=' . $ctype . '&amp;action=deletefav&amp;favorite_id=' . $key . '" onclick="return confirm(\'' . I18N::translate('Are you sure you want to remove this item from your list of favorites?') . '\');">' . I18N::translate('Remove') . '</a> ';
				if ($favorite['type'] == 'URL') {
					$content .= '<div id="boxurl' . $key . '.0" class="person_box">';
					if ($ctype == 'user' || WT_USER_GEDCOM_ADMIN) {
						$content .= $removeFavourite;
					}
					$content .= '<a href="' . $favorite['url'] . '"><b>' . $favorite['title'] . '</b></a>';
					$content .= '<br>' . $favorite['note'];
					$content .= '</div>';
				} else {
					$record = GedcomRecord::getInstance($favorite['gid']);
					if ($record && $record->canShow()) {
						if ($record instanceof Individual) {
							$content .= '<div id="box' . $favorite["gid"] . '.0" class="person_box action_header';
							switch ($record->getsex()) {
							case 'M':
								break;
							case 'F':
								$content .= 'F';
								break;
							default:
								$content .= 'NN';
								break;
							}
							$content .= '">';
							if ($ctype == "user" || WT_USER_GEDCOM_ADMIN) {
								$content .= $removeFavourite;
							}
							$content .= Theme::theme()->individualBoxLarge($record);
							$content .= $favorite['note'];
							$content .= '</div>';
						} else {
							$content .= '<div id="box' . $favorite['gid'] . '.0" class="person_box">';
							if ($ctype == 'user' || WT_USER_GEDCOM_ADMIN) {
								$content .= $removeFavourite;
							}
							$content .= $record->format_list('span');
							$content .= '<br>' . $favorite['note'];
							$content .= '</div>';
						}
					}
				}
			}
		}
		if ($ctype == 'user' || WT_USER_GEDCOM_ADMIN) {
			$uniqueID = Uuid::uuid4(); // This block can theoretically appear multiple times, so use a unique ID.
			$content .= '<div class="add_fav_head">';
			$content .= '<a href="#" onclick="return expand_layer(\'add_fav' . $uniqueID . '\');">' . I18N::translate('Add a new favorite') . '<i id="add_fav' . $uniqueID . '_img" class="icon-plus"></i></a>';
			$content .= '</div>';
			$content .= '<div id="add_fav' . $uniqueID . '" style="display: none;">';
			$content .= '<form name="addfavform" method="get" action="index.php">';
			$content .= '<input type="hidden" name="action" value="addfav">';
			$content .= '<input type="hidden" name="ctype" value="' . $ctype . '">';
			$content .= '<input type="hidden" name="ged" value="' . WT_GEDCOM . '">';
			$content .= '<div class="add_fav_ref">';
			$content .= '<input type="radio" name="fav_category" value="record" checked onclick="jQuery(\'#gid' . $uniqueID . '\').removeAttr(\'disabled\'); jQuery(\'#url, #favtitle\').attr(\'disabled\',\'disabled\').val(\'\');">';
			$content .= '<label for="gid' . $uniqueID . '">' . I18N::translate('Enter an individual, family, or source ID') . '</label>';
			$content .= '<input class="pedigree_form" data-autocomplete-type="IFSRO" type="text" name="gid" id="gid' . $uniqueID . '" size="5" value="">';
			$content .= ' ' . print_findindi_link('gid' . $uniqueID);
			$content .= ' ' . print_findfamily_link('gid' . $uniqueID);
			$content .= ' ' . print_findsource_link('gid' . $uniqueID);
			$content .= ' ' . print_findrepository_link('gid' . $uniqueID);
			$content .= ' ' . print_findnote_link('gid' . $uniqueID);
			$content .= ' ' . print_findmedia_link('gid' . $uniqueID);
			$content .= '</div>';
			$content .= '<div class="add_fav_url">';
			$content .= '<input type="radio" name="fav_category" value="url" onclick="jQuery(\'#url, #favtitle\').removeAttr(\'disabled\'); jQuery(\'#gid' . $uniqueID . '\').attr(\'disabled\',\'disabled\').val(\'\');">';
			$content .= '<input type="text" name="url" id="url" size="20" value="" placeholder="' . WT_Gedcom_Tag::getLabel('URL') . '" disabled> ';
			$content .= '<input type="text" name="favtitle" id="favtitle" size="20" value="" placeholder="' . I18N::translate('Title') . '" disabled>';
			$content .= '<p>' . I18N::translate('Enter an optional note about this favorite') . '</p>';
			$content .= '<textarea name="favnote" rows="6" cols="50"></textarea>';
			$content .= '</div>';
			$content .= '<input type="submit" value="' . I18N::translate('Add') . '">';
			$content .= '</form></div>';
		}

		if ($template) {
			if ($block) {
				$class .= ' small_inner_block';
			}
			return Theme::theme()->formatBlock($id, $title, $class, $content);
		} else {
			return $content;
		}
	}

	/** {@inheritdoc} */
	public function loadAjax() {
		return false;
	}

	/** {@inheritdoc} */
	public function isUserBlock() {
		return false;
	}

	/** {@inheritdoc} */
	public function isGedcomBlock() {
		return true;
	}

	/** {@inheritdoc} */
	public function configureBlock($block_id) {
		if (Filter::postBool('save') && Filter::checkCsrf()) {
			set_block_setting($block_id, 'block', Filter::postBool('block'));
		}

		$block = get_block_setting($block_id, 'block', '0');

		echo '<tr><td class="descriptionbox wrap width33">';
		echo /* I18N: label for a yes/no option */ I18N::translate('Add a scrollbar when block contents grow');
		echo '</td><td class="optionbox">';
		echo edit_field_yes_no('block', $block);
		echo '</td></tr>';
	}

	/**
	 * Delete a favorite from the database
	 *
	 * @param integer $favorite_id
	 *
	 * @return boolean
	 */
	public static function deleteFavorite($favorite_id) {
		return (bool)
			Database::prepare("DELETE FROM `##favorite` WHERE favorite_id=?")
			->execute(array($favorite_id));
	}

	/**
	 * Store a new favorite in the database
	 *
	 * @param $favorite
	 *
	 * @return boolean
	 */
	public static function addFavorite($favorite) {
		// -- make sure a favorite is added
		if (empty($favorite['gid']) && empty($favorite['url'])) {
			return false;
		}

		//-- make sure this is not a duplicate entry
		$sql = "SELECT SQL_NO_CACHE 1 FROM `##favorite` WHERE";
		if (!empty($favorite['gid'])) {
			$sql .= " xref=?";
			$vars = array($favorite['gid']);
		} else {
			$sql .= " url=?";
			$vars = array($favorite['url']);
		}
		$sql .= " AND gedcom_id=?";
		$vars[] = $favorite['gedcom_id'];
		if ($favorite['user_id']) {
			$sql .= " AND user_id=?";
			$vars[] = $favorite['user_id'];
		} else {
			$sql .= " AND user_id IS NULL";
		}

		if (Database::prepare($sql)->execute($vars)->fetchOne()) {
			return false;
		}

		//-- add the favorite to the database
		return (bool)
			Database::prepare("INSERT INTO `##favorite` (user_id, gedcom_id, xref, favorite_type, url, title, note) VALUES (? ,? ,? ,? ,? ,? ,?)")
				->execute(array($favorite['user_id'], $favorite['gedcom_id'], $favorite['gid'], $favorite['type'], $favorite['url'], $favorite['title'], $favorite['note']));
	}

	/**
	 * Get favorites for a user or family tree
	 *
	 * @param integer $gedcom_id
	 *
	 * @return string[][]
	 */
	public static function getFavorites($gedcom_id) {
		self::updateSchema(); // make sure the favorites table has been created

		return
			Database::prepare(
				"SELECT SQL_CACHE favorite_id AS id, user_id, gedcom_id, xref AS gid, favorite_type AS type, title, note, url" .
				" FROM `##favorite` WHERE gedcom_id=? AND user_id IS NULL")
			->execute(array($gedcom_id))
			->fetchAll(PDO::FETCH_ASSOC);
	}

	/**
	 * Make sure the database structure is up-to-date.
	 */
	protected static function updateSchema() {
		// Create tables, if not already present
		try {
			Database::updateSchema(WT_ROOT . WT_MODULES_DIR . 'gedcom_favorites/db_schema/', 'FV_SCHEMA_VERSION', 4);
		} catch (PDOException $ex) {
			// The schema update scripts should never fail.  If they do, there is no clean recovery.
			FlashMessages::addMessage($ex->getMessage(), 'danger');
			header('Location: ' . WT_BASE_URL . 'site-unavailable.php');
			throw $ex;
		}
	}
}
