From 86b9bff09a51b17151efa5ec322cddcc50a54cb2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jovan=20Kruni=C4=87?= <jovan.krunic@gmail.com>
Date: Fri, 14 Dec 2018 14:47:20 +0100
Subject: [PATCH] feat(storage): add search using regex

---
 src/app/modules/storage/storage.provider.spec.ts |  7 +++++++
 src/app/modules/storage/storage.provider.ts      | 15 +++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/src/app/modules/storage/storage.provider.spec.ts b/src/app/modules/storage/storage.provider.spec.ts
index 27da31d5..1ebe6268 100644
--- a/src/app/modules/storage/storage.provider.spec.ts
+++ b/src/app/modules/storage/storage.provider.spec.ts
@@ -153,4 +153,11 @@ describe('StorageProvider', () => {
     expect(await storageProvider.has('foo')).toBeTruthy();
     expect(await storageProvider.has('something-else')).toBeFalsy();
   });
+
+  it('should allow search by regex', async () => {
+    await storageProvider.putMultiple(sampleEntries);
+    const found: Map<string, any> = await storageProvider.search<any>(/bar/);
+    expect(Array.from(found.keys()).sort()).toEqual(['bar', 'foobar']);
+    expect(Array.from(found.values())).toEqual([{foo: 'BarFoo'}, 123]);
+  });
 });
diff --git a/src/app/modules/storage/storage.provider.ts b/src/app/modules/storage/storage.provider.ts
index 832f0f00..d7a84350 100644
--- a/src/app/modules/storage/storage.provider.ts
+++ b/src/app/modules/storage/storage.provider.ts
@@ -53,6 +53,21 @@ export class StorageProvider {
     return entry;
   }
 
+  /**
+   * Gets values from the storage using the provided regex
+   *
+   * @param pattern Regular expression to test existing storage keys with
+   */
+  async search<T>(pattern: RegExp): Promise<Map<string, T>> {
+    const map: Map<string, any> = new Map();
+    await this.storage.forEach((value, key) => {
+      if (pattern.test(key)) {
+        map.set(key, value);
+      }
+    });
+    return map;
+  }
+
   /**
    * Deletes a storage entry using the key used to save it
    *