ui5_easy_use/dist/ez5/package-content/api/content/LocalStorage.js

CLI tool for SAP ui5 and SAPUI5 projects to initialize apps, generate pages, insert form and table components, manage routing, and automate i18n bindings

sap.ui.define([], function () {
    "use strict";

    return class LocalStorage {
        constructor(controller) {
            this._controller = controller;
        }

        saveToLocalStorage(key, newData) {
            if (!this._isValidKey(key)) {
                return;
            }

            const storage = this._getStorage();
            const existingData = this.getFromLocalStorage(key);
            const updatedData = this._mergeData(existingData, newData);

            storage.setItem(key, JSON.stringify(updatedData));
        }

        getFromLocalStorage(key) {
            if (!this._isValidKey(key)) {
                return null;
            }

            const storedData = this._getStorage().getItem(key);
            if (!storedData) {
                return null;
            }

            try {
                return JSON.parse(storedData);
            } catch (error) {
                console.error(`Error parsing local storage value for key "${key}".`, error);
                return null;
            }
        }

        removeFromLocalStorage(key) {
            if (this._isValidKey(key)) {
                this._getStorage().removeItem(key);
            }
        }

        clearLocalStorage() {
            this._getStorage().clear();
        }

        _mergeData(existingData, newData) {
            if (Array.isArray(existingData)) {
                return [...existingData, newData];
            }

            if (existingData && typeof existingData === "object" && !Array.isArray(newData)) {
                return { ...existingData, ...newData };
            }

            return Array.isArray(newData) ? [newData] : newData;
        }

        _isValidKey(key) {
            if (key) {
                return true;
            }

            console.error("LocalStorage key cannot be empty.");
            return false;
        }

        _getStorage() {
            return window.localStorage;
        }
    };
});