Fix backend to shared notes, and initial fronted code.

lib/Db/Note.php

@@ -13,7 +13,8 @@ class Note extends Entity implements JsonSerializable {
 	protected $timestamp;
 	protected $colorId;
 	protected $userId;
-	protected $sharedWith;
+	protected $sharedWith = [];
+	protected $sharedBy = [];
 	protected $isShared;
 	protected $tags;
 	protected $attachts;
@@ -40,8 +41,9 @@ class Note extends Entity implements JsonSerializable {
 			'colorid' => $this->colorId,
 			'color' => $this->color,
 			'userid' => $this->userId,
-			'sharedwith' => $this->sharedWith,
-			'isshared' => $this->isShared,
+			'shared_with' => $this->sharedWith,
+			'shared_by' => $this->sharedBy,
+			'is_shared' => $this->isShared,
 			'tags' => $this->tags,
 			'attachts' => $this->attachts
 		];

lib/Db/NoteMapper.php

@@ -31,6 +31,22 @@ class NoteMapper extends QBMapper {
 		return $this->findEntity($qb);
 	}
 
+	/**
+	 * @param int $id
+	 * @throws \OCP\AppFramework\Db\DoesNotExistException if not found
+	 * @throws \OCP\AppFramework\Db\MultipleObjectsReturnedException if more than one result
+	 * @return Note
+	 */
+	public function findShared($id) {
+		$qb = $this->db->getQueryBuilder();
+		$qb->select('*')
+			->from($this->tableName)
+			->where(
+				$qb->expr()->eq('id', $qb->createNamedParameter($id, IQueryBuilder::PARAM_INT))
+			);
+		return $this->findEntity($qb);
+	}
+
 	public function findAll($userId) {
 		$qb = $this->db->getQueryBuilder();
 		$qb->select('*')

lib/Db/NoteShare.php

@@ -8,15 +8,18 @@ use OCP\AppFramework\Db\Entity;
 class NoteShare extends Entity implements JsonSerializable {
 
 	protected $noteId;
+	protected $userId;
 	protected $sharedUser;
 	protected $sharedGroup;
 
 	public function jsonSerialize() {
 		return [
 			'id' => $this->id,
-			'noteid' => $this->noteId,
-			'shareduser' => $this->sharedUser,
-			'sharedgroup' => $this->sharedGroup
+			'user_id' => $this->userId,
+			'note_id' => $this->noteId,
+			'shared_user' => $this->sharedUser,
+			'shared_group' => $this->sharedGroup
 		];
 	}
+
 }