Implement routes for trash index

Signed-off-by: Marcel Klehr <mklehr@gmx.net>

appinfo/routes.php

@@ -85,6 +85,8 @@ return [
 		['name' => 'internal_folders#find_shares', 'url' => '/share', 'verb' => 'GET'],
 		['name' => 'internal_folders#edit_share', 'url' => '/share/{shareId}', 'verb' => 'PUT'],
 		['name' => 'internal_folders#delete_share', 'url' => '/share/{shareId}', 'verb' => 'DELETE'],
+		['name' => 'trash#get_children', 'url' => '/trash/children', 'verb' => 'GET'],
+		['name' => 'trash#count', 'url' => '/trash/count', 'verb' => 'GET'],
 
 		// Public REST API
 		['name' => 'bookmark#get_bookmarks', 'url' => '/public/rest/v2/bookmark', 'verb' => 'GET'],

lib/Controller/TrashController.php

@@ -0,0 +1,76 @@
+<?php
+/*
+ * Copyright (c) 2020. The Nextcloud Bookmarks contributors.
+ *
+ * This file is licensed under the Affero General Public License version 3 or later. See the COPYING file.
+ */
+
+namespace OCA\Bookmarks\Controller;
+
+use OCA\Bookmarks\Db\TrashMapper;
+use OCA\Bookmarks\Service\Authorizer;
+use OCP\AppFramework\ApiController;
+use OCP\AppFramework\Http;
+use OCP\AppFramework\Http\JSONResponse;
+
+class TrashController extends ApiController {
+	/**
+	 * @var Authorizer
+	 */
+	private $authorizer;
+
+	/**
+	 * @var \Psr\Log\LoggerInterface
+	 */
+	private $logger;
+	private TrashMapper $trash;
+
+	/**
+	 * FoldersController constructor.
+	 *
+	 * @param $appName
+	 * @param $request
+	 * @param Authorizer $authorizer
+	 * @param \Psr\Log\LoggerInterface $logger
+	 * @param TrashMapper $trash
+	 */
+	public function __construct($appName, $request, Authorizer $authorizer, \Psr\Log\LoggerInterface $logger, TrashMapper $trash) {
+		parent::__construct($appName, $request);
+		$this->authorizer = $authorizer;
+		$this->logger = $logger;
+
+		$this->authorizer->setCORS(false);
+		$this->trash = $trash;
+	}
+
+	/**
+	 * @param int $folderId
+	 * @param int $layers
+	 * @return JSONResponse
+	 *
+	 * @NoAdminRequired
+	 */
+	public function getChildren(): JSONResponse {
+		if (!Authorizer::hasPermission(Authorizer::PERM_READ, $this->authorizer->getPermissionsForFolder(-1, $this->request))) {
+			return new JSONResponse(['status' => 'error', 'data' => 'Unauthorized'], Http::STATUS_FORBIDDEN);
+		}
+
+		$children = $this->trash->getChildren($this->authorizer->getUserId());
+		$res = new JSONResponse(['status' => 'success', 'data' => $children]);
+		return $res;
+	}
+
+	/**
+	 * @return JSONResponse
+	 * @NoAdminRequired
+	 * @NoCSRFRequired
+	 */
+	public function count(): JSONResponse {
+		if (!Authorizer::hasPermission(Authorizer::PERM_ALL, $this->authorizer->getPermissionsForFolder(-1, $this->request))) {
+			return new JSONResponse(['status' => 'error', 'data' => 'Unauthorized'], Http::STATUS_FORBIDDEN);
+		}
+
+		$count = $this->trash->countTrash($this->authorizer->getUserId());
+		return new JSONResponse(['status' => 'success', 'item' => $count]);
+	}
+}

lib/Db/TrashMapper.php

@@ -240,6 +240,53 @@ class TrashMapper extends QBMapper {
 		return $descendants;
 	}
 
+	/**
+	 * @return (int|mixed|string)[][]
+	 *
+	 * @psalm-return array<array-key, array<string, int|mixed|string>>
+	 */
+	public function getChildren(string $userId): array {
+		$qb = $this->getChildrenQuery[self::TYPE_BOOKMARK];
+		$this->selectFromType(self::TYPE_BOOKMARK, ['t.deleted_at', 't.type'], $qb);
+		$qb->andWhere($qb->expr()->eq('t.user_id', $qb->createNamedParameter($userId)));
+		$childBookmarks = $qb->execute()->fetchAll();
+
+		$qb = $this->getChildrenQuery[self::TYPE_FOLDER];
+		$this->selectFromType(self::TYPE_FOLDER, ['t.deleted_at', 't.type'], $qb);
+		$qb->andWhere($qb->expr()->eq('t.user_id', $qb->createNamedParameter($userId)));
+		$childFolders = $qb->execute()->fetchAll();
+
+		$qb = $this->getChildrenQuery[self::TYPE_SHARE];
+		$this->selectFromType(self::TYPE_SHARE, ['t.deleted_at', 't.type'], $qb);
+		$qb->andWhere($qb->expr()->eq('t.user_id', $qb->createNamedParameter($userId)));
+		$childShares = $qb->execute()->fetchAll();
+
+		$children = array_merge($childBookmarks, $childFolders, $childShares);
+		$dates = array_reverse(array_column($children, 'deleted_at'));
+		array_multisort($dates, $children);
+
+		$bookmark = new Bookmark();
+
+		$children = array_map(function ($child) use ($bookmark) {
+			$item = ['type' => $child['type'], 'id' => (int)$child['id'], 'title' => $child['title'], 'userId' => $child['user_id']];
+
+			if ($item['type'] === self::TYPE_SHARE) {
+				$item['type'] = self::TYPE_FOLDER;
+				$item['id'] = (int)$child['folder_id'];
+			}
+
+			if ($item['type'] === self::TYPE_BOOKMARK) {
+				foreach (Bookmark::$columns as $col) {
+					$item[$bookmark->columnToProperty($col)] = $child[$col];
+				}
+			}
+
+			return $item;
+		}, $children);
+
+		return $children;
+	}
+
 
 	/**
 	 * @param string $type