chore(WebStorageUtility): rebuild, decrease number of static methods

Author: DanielKucal

src/decorator/webstorage.ts

@@ -1,4 +1,4 @@
-import { WebStorageUtility } from '../utility/webstorage.utility';
+import { WebStorageUtility } from '../utility';
 import { LocalStorageService, SessionStorageService, WebStorageServiceInterface } from '../service/webstorage.service';
 import * as isEmpty from 'is-empty';
 import { Config } from '../config';

src/index.ts

@@ -3,7 +3,7 @@ import { LocalStorageService, SessionStorageService } from './service/webstorage
 
 export { LocalStorage, SessionStorage } from './decorator/webstorage'
 export { WebStorageService, LocalStorageService, SessionStorageService } from './service/webstorage.service';
-export { WebStorageUtility } from './utility/webstorage.utility';
+export { WebStorageUtility } from './utility';
 export { WebStorageConfigInterface, WEBSTORAGE_CONFIG } from './config';
 export declare class Webstorable {
     save(): void;

src/service/webstorage.service.ts

@@ -1,6 +1,6 @@
 import { Injectable } from '@angular/core';
 import { ClearType, Config } from '../config';
-import { WebStorageUtility } from '../utility/webstorage.utility';
+import { WebStorageUtility } from '../utility';
 import { WebStorageConfigInterface } from '../config/config.interface';
 
 export interface WebStorageServiceInterface {

src/utility/index.ts

@@ -0,0 +1,4 @@
+import { Config } from '../config';
+import { WebStorageUtilityClass } from './webstorage-utility.class';
+
+export const WebStorageUtility: WebStorageUtilityClass = new WebStorageUtilityClass(Config.prefix);

src/utility/webstorage-utility.class.ts

@@ -0,0 +1,43 @@
+export class WebStorageUtilityClass {
+    protected _prefix: string = '';
+
+    public static getSettable(value: any): string {
+        return typeof value === "string" ? value : JSON.stringify(value);
+    }
+
+    public static getGettable(value: string): any {
+        if (value === 'undefined') return null;
+        try {
+            return JSON.parse(value);
+        } catch(e) {
+            return value;
+        }
+    }
+
+    public constructor(prefix: string) {
+        this._prefix = prefix;
+    }
+
+
+    public getStorageKey(key: string): string {
+        return `${this._prefix}${key}`;
+    }
+
+    public get(storage: Storage, key: string): any {
+        let storageKey = this.getStorageKey(key);
+        let value = storage.getItem(storageKey);
+        return WebStorageUtilityClass.getGettable(value);
+    }
+
+    public set(storage: Storage, key: string, value: any): any {
+        let storageKey = this.getStorageKey(key);
+        let storable = WebStorageUtilityClass.getSettable(value);
+        storage.setItem(storageKey, storable);
+        return value;
+    }
+
+    public remove(storage: Storage, key: string): void {
+        let storageKey = this.getStorageKey(key);
+        storage.removeItem(storageKey);
+    }
+}