@jaricardodev/ews-javascript-api/src/js/Core/EwsServiceJsonReader.ts

EWS Managed api in JavaScript

import {ServiceObject} from "./ServiceObjects/ServiceObject";
import {ServiceLocalException} from "../Exceptions/ServiceLocalException";
import {ExchangeService} from "./ExchangeService";
import {JsonObject} from "./JsonObject";
import {PropertySet} from "./PropertySet";
import {GetObjectInstanceDelegate} from "../Misc/DelegateTypes";
import {StringHelper, TypeSystem, base64Helper} from "../ExtensionMethods";
export class EwsServiceJsonReader {
    //Service: ExchangeService;
    // constructor(service: ExchangeService){
    // 	this.Service = service;
    // }
    static ReadAsArray(jsObject: any, xmlElementName: string):any[] {
        if (!jsObject || !jsObject[xmlElementName]) {
            return [];
            //throw new Error("EwsServiceJsonReader - ReadAsArray - json property not found");
        }
        var collectionItems: any[] = jsObject[xmlElementName];
        if (!Array.isArray(collectionItems)) {
            collectionItems = [collectionItems];
        }
        return collectionItems;
    }
    static ReadBase64ElementValue(obj:any):string{
        return base64Helper.atob(obj);
    }
    static ReadServiceObjectsCollectionFromJson<TServiceObject extends ServiceObject>(jsonResponse: any/*JsonObject*/, service: ExchangeService, collectionJsonElementName: string, getObjectInstanceDelegate: GetObjectInstanceDelegate<TServiceObject>, clearPropertyBag: boolean, requestedPropertySet: PropertySet, summaryPropertiesOnly: boolean): TServiceObject[] /*System.Collections.Generic.List<TServiceObject>*/ {

        var serviceObjects: TServiceObject[] = [];
        var serviceObject: TServiceObject = null;

        var collectionItems: any[] = jsonResponse[collectionJsonElementName];

        for (var key in collectionItems) {
            if ((<string>key).indexOf("__") === 0)
                continue;
            var jsonServiceObjects: any[] = collectionItems[key];
            if (!Array.isArray(jsonServiceObjects)) {
                jsonServiceObjects = [jsonServiceObjects];
            }
            for (var jsonServiceObject of jsonServiceObjects) {
                if (jsonServiceObject != null) {
                    var typeName = TypeSystem.GetJsObjectTypeName(jsonServiceObject);
                    if (StringHelper.IsNullOrEmpty(typeName)) debugger;//check why typeName is empty - may be invalid xml parsing by xml2js
                    serviceObject = getObjectInstanceDelegate(service, typeName || key);
                    if (serviceObject != null) {
                        if ((typeName || key) !== serviceObject.GetXmlElementName()) { //string.Compare(jsonServiceObject.ReadTypeString(), serviceObject.GetXmlElementName(), StringComparison.Ordinal) != 0)                        
                            throw new ServiceLocalException(
                                StringHelper.Format(
                                    "The type of the object in the store ({0}) does not match that of the local object ({1}).",
                                    typeName,
                                    serviceObject.GetXmlElementName()));
                        }
                        serviceObject.LoadFromXmlJsObject(
                            jsonServiceObject,
                            service,
                            clearPropertyBag,
                            requestedPropertySet,
                            summaryPropertiesOnly);
                        serviceObjects.push(serviceObject);
                    }
                    // else
                    //     debugger;
                }
            }

        }

        return serviceObjects;
    }
}