ui5_easy_use/dist/ez5/package-content/api/content/DummyBackend.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 DummyBackend {
        constructor(storageKey = "ez5DummyBackendRecords") {
            this.storageKey = storageKey;
            this.memoryRecords = this._getSeedRecords();
        }

        async list() {
            return this._cloneRecords(this._readRecords());
        }

        async create(record) {
            if (!record || typeof record !== "object" || Array.isArray(record)) {
                throw new Error("DummyBackend.create requires a record object.");
            }

            const records = this._readRecords();
            const nextRecord = this._buildRecord(record, records);

            records.push(nextRecord);
            this._writeRecords(records);

            return this._cloneRecord(nextRecord);
        }

        async reset() {
            const records = this._getSeedRecords();
            this._writeRecords(records);
            return this._cloneRecords(records);
        }

        // Form and table examples both use this shape, so keep new records aligned with the seed data.
        _buildRecord(record, records) {
            const status = record.Status || record.Highlight || "None";

            return {
                EmployeeName: "",
                Country: "",
                Email: "",
                Time: "",
                Status: status,
                Highlight: status,
                ...record,
                EmployeeId: this._resolveEmployeeId(record, records),
                Highlight: status
            };
        }

        _readRecords() {
            const storage = this._getStorage();
            if (!storage) {
                return this._cloneRecords(this.memoryRecords);
            }

            const storedRecords = storage.getItem(this.storageKey);
            if (!storedRecords) {
                const seedRecords = this._getSeedRecords();
                this._writeRecords(seedRecords);
                return seedRecords;
            }

            try {
                const parsedRecords = JSON.parse(storedRecords);
                return Array.isArray(parsedRecords) ? parsedRecords : this._getSeedRecords();
            } catch (error) {
                console.warn("DummyBackend: failed to parse stored records; resetting seed data.", error);
                return this._getSeedRecords();
            }
        }

        _writeRecords(records) {
            const nextRecords = this._cloneRecords(records);
            this.memoryRecords = nextRecords;

            const storage = this._getStorage();
            if (storage) {
                storage.setItem(this.storageKey, JSON.stringify(nextRecords));
            }
        }

        _resolveEmployeeId(record, records) {
            if (record.EmployeeId !== undefined && record.EmployeeId !== null && record.EmployeeId !== "") {
                return record.EmployeeId;
            }

            const numericIds = records
                .map((item) => Number(item.EmployeeId))
                .filter((value) => Number.isFinite(value));

            return numericIds.length ? Math.max(...numericIds) + 1 : 1;
        }

        _getStorage() {
            if (typeof window === "undefined" || !window.localStorage) {
                return null;
            }

            return window.localStorage;
        }

        _cloneRecords(records) {
            return records.map((record) => this._cloneRecord(record));
        }

        _cloneRecord(record) {
            return { ...record };
        }

        _getSeedRecords() {
            return [
                {
                    EmployeeId: 1,
                    EmployeeName: "Zaid",
                    Country: "Saudi Arabia",
                    Email: "zaid@example.com",
                    Time: "09:00 AM",
                    Highlight: "Success"
                },
                {
                    EmployeeId: 2,
                    EmployeeName: "Yazan",
                    Country: "Egypt",
                    Email: "yazan@example.com",
                    Time: "10:30 AM",
                    Highlight: "Information"
                },
                {
                    EmployeeId: 3,
                    EmployeeName: "Ahmed",
                    Country: "Jordan",
                    Email: "ahmed@example.com",
                    Time: "11:15 AM",
                    Highlight: "Warning"
                },
                {
                    EmployeeId: 4,
                    EmployeeName: "Sara",
                    Country: "United Arab Emirates",
                    Email: "sara@example.com",
                    Time: "01:45 PM",
                    Highlight: "None"
                },
                {
                    EmployeeId: 5,
                    EmployeeName: "Lina",
                    Country: "Kuwait",
                    Email: "lina@example.com",
                    Time: "03:00 PM",
                    Highlight: "Success"
                }
            ];
        }
    };
});