lh-sdk/src/lib/common.ts

LassondeHacks REST API SDK in Typescript

import * as request from 'request';

export interface Response {

    success: boolean;
    msg: string;
    err: string;
}

export interface Model {

    save(): Promise<boolean>;
    delete(): Promise<boolean>;
}

export class SDK {

    public static instace: SDK;
    private cookie: string;
    private api: string;

    public static getInstance() {
        if (SDK.instace === undefined) {
            SDK.instace = new SDK();
        }
        return SDK.instace;
    }

    constructor() {
        if (process.env.NODE_ENV === 'production') {
            this.api = "https://lassondehacks.io/api/";
        } else if (process.env.NODE_ENV === 'staging') {
            this.api = "http://staging.lassondehacks.io:8080/";
        } else {
            this.api = "http://localhost:8080/";
        }
        this.cookie = null;
    }

    public GET(url: string): Promise<any> {
        return new Promise<any>((resolve, reject) => {
            let self = this;
            request.get(this.api + url, (err, res, body) => {
                if (err) {
                    reject(err);
                } else {
                    try {
                        if (res.headers["set-cookie"]) {
                            self.cookie = res.headers["set-cookie"][0];
                        }
                        if (typeof (body) === 'string') {
                            resolve(JSON.parse(body));
                        } else {
                            resolve(body);
                        }
                    } catch (err) {
                        reject(err);
                    }
                }
            }).setHeader("Cookie", this.cookie);
        });
    }

    public POST(url: string, params: Object): Promise<any> {
        return new Promise<any>((resolve, reject) => {
            let self = this;
            request.post(this.api + url, (err, res, body) => {
                if (err) {
                    reject(err);
                } else {
                    if (res.headers["set-cookie"]) {
                        self.cookie = res.headers["set-cookie"][0];
                    }
                    resolve(body);
                }
            }).json(params).setHeader("Cookie", this.cookie);
        });
    }

    public PUT(url: string, params: Object): Promise<any> {
        return new Promise<any>((resolve, reject) => {
            let self = this;
            request.put(this.api + url, (err, res, body) => {
                if (err) {
                    reject(err);
                } else {
                    if (res.headers["set-cookie"]) {
                        self.cookie = res.headers["set-cookie"][0];
                    }
                    resolve(body);
                }
            }).json(params).setHeader("Cookie", this.cookie);
        });
    }

    public DELETE(url: string, params: Object): Promise<any> {
        return new Promise<any>((resolve, reject) => {
            let self = this;
            request.delete(this.api + url, (err, res, body) => {
                if (err) {
                    reject(err);
                } else {
                    if (res.headers["set-cookie"]) {
                        self.cookie = res.headers["set-cookie"][0];
                    }
                    resolve(body);
                }
            }).json(params).setHeader("Cookie", this.cookie);
        });
    }
}