NativeScript/tns-core-modules/http/http.ts

import { ImageSource } from "../image-source";
import * as httpRequest from "./http-request";
export * from "./http-request";

export function getString(arg: any): Promise<string> {
    return new Promise<string>((resolve, reject) => {
        httpRequest.request(typeof arg === "string" ? { url: arg, method: "GET" } : arg)
            .then(r => {
                try {
                    const str = r.content.toString();
                    resolve(str);
                } catch (e) {
                    reject(e);
                }
            }, e => reject(e));
    });
}

export function getJSON<T>(arg: any): Promise<T> {
    return new Promise<T>((resolve, reject) => {
        httpRequest.request(typeof arg === "string" ? { url: arg, method: "GET" } : arg)
            .then(r => {
                try {
                    const json = r.content.toJSON();
                    resolve(json);
                } catch (e) {
                    reject(e);
                }
            }, e => reject(e));
    });
}

export function getImage(arg: any): Promise<ImageSource> {
    return new Promise<any>((resolve, reject) => {
        httpRequest.request(typeof arg === "string" ? { url: arg, method: "GET" } : arg)
            .then(r => {
                try {
                    resolve(r.content.toImage());
                } catch (err) {
                    reject(err);
                }
            }, err => {
                reject(err);
            });
    });
}

export function getFile(arg: any, destinationFilePath?: string): Promise<any> {
    return new Promise<any>((resolve, reject) => {
        httpRequest.request(typeof arg === "string" ? { url: arg, method: "GET" } : arg)
            .then(r => {
                try {
                    const file = r.content.toFile(destinationFilePath);
                    resolve(file);
                } catch (e) {
                    reject(e);
                }
            }, e => reject(e));
    });
}