153 lines
4.1 KiB
JavaScript
153 lines
4.1 KiB
JavaScript
const logger = require('./logger.js');
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const realpath = require('fs/promises').realpath;
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const stat = require('fs/promises').stat;
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const http = require('http');
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const { HTTP_GET, HTTP_POST } = require('./constants.js');
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function timeDiff(startTime) {
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if (startTime instanceof Date) {
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return (new Date().getTime() - startTime.getTime());
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}
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return new Date().getTime - startTime;
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}
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function clone(object) {
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let clone = {};
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for (key in object) {
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clone[key] = object[key];
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}
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return clone;
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}
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function httpGET(host, port, path, args) {
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return httpRequest(host, port, path, HTTP_GET, args);
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}
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function httpPOST(host, port, path, args) {
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return httpRequest(host, port, path, HTTP_POST, args);
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}
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function httpRequest(host, port, path, method, args) {
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return new Promise(function (resolve, reject) {
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if (!path.startsWith("/")) {
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path = "/" + path;
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}
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const options = {
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hostname: host,
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port: port,
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path: path,
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method: method
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};
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let requestName = 'http \'' + method + '\' request > \'' + host + ':' + port + path;
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if (args !== undefined) {
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args = new URLSearchParams(args).toString();
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options.headers = {
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'Content-Type': 'application/x-www-form-urlencoded'
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}
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requestName += '?' + args;
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}
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requestName += '\'';
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logger.debug('sending ' + requestName + '...');
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const request = http.request(options, function (response) {
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if (!response) {
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return reject('no response from host for ' + requestName);
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}
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let responseData = "";
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response.on('data', function (data) {
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responseData += data;
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});
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response.on('end', function () {
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logger.debug(requestName + ' returned status code \'' + response.statusCode + '\' and data \'' + responseData + '\'');
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let fn = resolve;
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if (response.statusCode != 200) {
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fn = reject;
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}
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if (!responseData) {
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return fn();
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}
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try {
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return fn(JSON.parse(responseData));
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} catch (err) {
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return fn(responseData);
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}
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});
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});
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request.on('error', function (err) {
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return reject(requestName + ' returned an error >>> ' + err.message);
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});
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if (args !== undefined) {
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request.write(args);
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}
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request.end();
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});
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}
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function toHex(value) {
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let hex = Number(value).toString(16);
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return hex;
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}
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function hexToRGB(hex) {
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let validHEXInput = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
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if (!validHEXInput) {
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return;
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}
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let output = [
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{
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red: parseInt(validHEXInput[1], 16),
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green: parseInt(validHEXInput[2], 16),
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blue: parseInt(validHEXInput[3], 16),
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},
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];
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return output;
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}
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function sortById(array) {
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return array.sort(function (a, b) {
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return a.id - b.id;
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});
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}
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function fileExists(file) {
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return new Promise((resolve, reject) => {
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if (file == undefined) {
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reject('can not check the existence of an undefined file');
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}
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resolvePath(file)
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.then((path) => {
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stat(path)
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.then((stats) => {
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resolve({ path, stats });
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})
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})
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.catch(reject);
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});
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}
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function resolvePath(file) {
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return new Promise((resolve, reject) => {
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if (file == undefined) {
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reject('can not resolve a path to an undefined file');
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}
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realpath(file)
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.then(resolve)
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.catch((err) => {
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reject('resolving path \'' + file + '\' encountered an error >>> ' + err);
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});
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});
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}
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module.exports = {
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timeDiff,
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clone,
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httpGET,
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httpPOST,
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toHex,
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hexToRGB,
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sortById,
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fileExists,
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resolvePath
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} |