From 017fc67765bdb75542045830fb85f8eb4b899485 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jovan=20Kruni=C4=87?= <jovan.krunic@gmail.com>
Date: Tue, 12 Feb 2019 14:06:54 +0100
Subject: [PATCH] feat(data): add method that checks if data item has been
 saved

---
 src/app/modules/data/data.provider.spec.ts | 6 ++++++
 src/app/modules/data/data.provider.ts      | 9 +++++++++
 2 files changed, 15 insertions(+)

diff --git a/src/app/modules/data/data.provider.spec.ts b/src/app/modules/data/data.provider.spec.ts
index 3f0826a5..b842763a 100644
--- a/src/app/modules/data/data.provider.spec.ts
+++ b/src/app/modules/data/data.provider.spec.ts
@@ -220,4 +220,10 @@ describe('DataProvider', () => {
     const result = await storageProvider.getAll();
     expect(Array.from(result.keys())).toEqual(['some-uid']);
   });
+
+  it('should properly check if a data item has already been saved', async () => {
+    expect(await dataProvider.isSaved(sampleThing.uid)).toBeFalsy();
+    await dataProvider.put(sampleThing);
+    expect(await dataProvider.isSaved(sampleThing.uid)).toBeTruthy();
+  });
 });
diff --git a/src/app/modules/data/data.provider.ts b/src/app/modules/data/data.provider.ts
index 875ca28b..186a1882 100644
--- a/src/app/modules/data/data.provider.ts
+++ b/src/app/modules/data/data.provider.ts
@@ -147,4 +147,13 @@ export class DataProvider {
   async search(query: SCSearchQuery): Promise<SCSearchResponse> {
     return (await this.client.search(query));
   }
+
+  /**
+   * Provides information if something with an UID is saved as a data item
+   *
+   * @param uid Unique identifier of the saved data item
+   */
+  async isSaved(uid: string): Promise<boolean> {
+    return this.storageProvider.has(this.getDataKey(uid));
+  }
 }