@fosenu/httpclient/build/Client.js

A HTTP-client written in typescript, using native node.js library

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
const http = require("http");
const https = require("https");
var Protocol;
(function (Protocol) {
    Protocol["HTTP"] = "http";
    Protocol["HTTPS"] = "https";
})(Protocol = exports.Protocol || (exports.Protocol = {}));
var HTTP_METHOD;
(function (HTTP_METHOD) {
    HTTP_METHOD["GET"] = "GET";
    HTTP_METHOD["POST"] = "POST";
    HTTP_METHOD["PUT"] = "PUT";
    HTTP_METHOD["DELETE"] = "DELETE";
})(HTTP_METHOD || (HTTP_METHOD = {}));
var ResponseType;
(function (ResponseType) {
    ResponseType["JSON"] = "application/json";
    ResponseType["XML"] = "application/xml";
    ResponseType["XML_TEXT"] = "text/xml";
    ResponseType["HTML"] = "text/html";
    ResponseType["SCRIPT"] = "script";
})(ResponseType || (ResponseType = {}));
const defaultOptions = {
    protocol: Protocol.HTTP,
    encoding: 'utf8',
    error: error => console.error(error),
    baseUrl: '',
    headers: {}
};
class Client {
    static isErrorStatus(response) {
        return response.statusCode >= 400 && response.statusCode < 600;
    }
    static prepareData(data) {
        if (data) {
            if (typeof data === 'object')
                return JSON.stringify(data);
            return data.toString();
        }
        return null;
    }
    constructor(url, options = defaultOptions) {
        this.parseOptions(options);
        this._options.baseUrl = url;
    }
    parseOptions(options) {
        this._options = Object.assign({}, defaultOptions, options);
    }
    parseResponseData(type, data) {
        switch (type) {
            case ResponseType.JSON:
                return JSON.parse(data);
            case ResponseType.XML:
            case ResponseType.XML_TEXT:
            case ResponseType.HTML:
            case ResponseType.SCRIPT:
                return data;
            default:
                throw new Error(`Unsupported content-type for http response received: ${type}`);
        }
    }
    createRequestFn(protocol) {
        if (protocol === Protocol.HTTP)
            return http.request;
        else if (protocol === Protocol.HTTPS)
            return https.request;
        else
            throw new Error(`Unsupported protocol: ${protocol}`);
    }
    responseHandler(response) {
        let data = '';
        let type;
        if (response.headers && response.headers['content-type'])
            type = response.headers['content-type'].split(';')[0];
        response.on('data', chunkData => data += chunkData);
        return new Promise((resolve, reject) => {
            response.on('end', () => {
                try {
                    const parsedData = this.parseResponseData(type, data);
                    if (Client.isErrorStatus(response)) {
                        this.options.error(new Error(parsedData));
                        return reject(parsedData);
                    }
                    return resolve(parsedData);
                }
                catch (ex) {
                    this.options.error(ex);
                    return reject(ex);
                }
            });
        });
    }
    request(type, path, data) {
        const requestFn = this.createRequestFn(this._options.protocol);
        const { baseUrl, port, headers, protocol } = this._options;
        const preparedData = Client.prepareData(data);
        if (preparedData) {
            headers['content-length'] = Buffer.byteLength(preparedData);
        }
        const requestOptions = {
            hostname: baseUrl,
            port,
            path,
            method: type,
            headers,
            protocol: `${protocol}:`
        };
        return new Promise((resolve, reject) => {
            const request = requestFn(requestOptions, (res) => __awaiter(this, void 0, void 0, function* () {
                try {
                    const parsedResponse = yield this.responseHandler(res);
                    return resolve(parsedResponse);
                }
                catch (ex) {
                    return reject(ex);
                }
            }));
            request.on('error', error => {
                this._options.error(error);
                return reject(error);
            });
            request.end(preparedData);
        });
    }
    get(path) {
        return __awaiter(this, void 0, void 0, function* () {
            return this.request(HTTP_METHOD.GET, path, null);
        });
    }
    post(path, data = null) {
        return __awaiter(this, void 0, void 0, function* () {
            return this.request(HTTP_METHOD.POST, path, data);
        });
    }
    put(path, data = null) {
        return __awaiter(this, void 0, void 0, function* () {
            return this.request(HTTP_METHOD.PUT, path, data);
        });
    }
    delete(path, data = null) {
        return __awaiter(this, void 0, void 0, function* () {
            return this.request(HTTP_METHOD.DELETE, path, data);
        });
    }
    get options() {
        return this._options;
    }
}
exports.Client = Client;
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