MagicMirror/js/utils.js

const execSync = require("node:child_process").execSync;
const path = require("node:path");

const rootPath = path.resolve(`${__dirname}/../`);
const Log = require(`${rootPath}/js/logger.js`);
const os = require("node:os");
const fs = require("node:fs");
const si = require("systeminformation");

const modulePositions = []; // will get list from index.html
const regionRegEx = /"region ([^"]*)/i;
const indexFileName = "index.html";
const discoveredPositionsJSFilename = "js/positions.js";

module.exports = {

	async logSystemInformation  () {
		try {
			let installedNodeVersion = execSync("node -v", { encoding: "utf-8" }).replace("v", "").replace(/(?:\r\n|\r|\n)/g, "");

			const staticData = await si.get({
				system: "manufacturer, model, virtual",
				osInfo: "platform, distro, release, arch",
				versions: "kernel, node, npm, pm2"
			});
			let systemDataString = [
				"\n#####  System Information  #####",
				`- SYSTEM:    manufacturer: ${staticData.system.manufacturer}; model: ${staticData.system.model}; virtual: ${staticData.system.virtual}; timeZone: ${Intl.DateTimeFormat().resolvedOptions().timeZone}`,
				`- OS:        platform: ${staticData.osInfo.platform}; distro: ${staticData.osInfo.distro}; release: ${staticData.osInfo.release}; arch: ${staticData.osInfo.arch}; kernel: ${staticData.versions.kernel}`,
				`- VERSIONS:  electron: ${process.versions.electron}; used node: ${staticData.versions.node}; installed node: ${installedNodeVersion}; npm: ${staticData.versions.npm}; pm2: ${staticData.versions.pm2}`,
				`- ENV:       XDG_SESSION_TYPE: ${process.env.XDG_SESSION_TYPE}; MM_CONFIG_FILE: ${process.env.MM_CONFIG_FILE};`,
				`             WAYLAND_DISPLAY:  ${process.env.WAYLAND_DISPLAY}; DISPLAY: ${process.env.DISPLAY}; ELECTRON_ENABLE_GPU: ${process.env.ELECTRON_ENABLE_GPU}`,
				`- RAM:       total: ${(os.totalmem() / 1024 / 1024).toFixed(2)} MB; free: ${(os.freemem() / 1024 / 1024).toFixed(2)} MB; used: ${((os.totalmem() - os.freemem()) / 1024 / 1024).toFixed(2)} MB`,
				`- UPTIME:    ${Math.floor(os.uptime() / 60)} minutes`
			].join("\n");
			Log.info(systemDataString);

			// Return is currently only for jest
			return systemDataString;
		} catch (e) {
			Log.error(e);
		}
	},

	// return all available module positions
	getAvailableModulePositions () {
		return modulePositions;
	},

	// return if position is on modulePositions Array (true/false)
	moduleHasValidPosition (position) {
		if (this.getAvailableModulePositions().indexOf(position) === -1) return false;
		return true;
	},

	getModulePositions () {
		// if not already discovered
		if (modulePositions.length === 0) {
			// get the lines of the index.html
			const lines = fs.readFileSync(indexFileName).toString().split("\n");
			// loop thru the lines
			lines.forEach((line) => {
				// run the regex on each line
				const results = regionRegEx.exec(line);
				// if the regex returned something
				if (results && results.length > 0) {
					// get the position parts and replace space with underscore
					const positionName = results[1].replace(" ", "_");
					// add it to the list
					modulePositions.push(positionName);
				}
			});
			try {
				fs.writeFileSync(discoveredPositionsJSFilename, `const modulePositions=${JSON.stringify(modulePositions)}`);
			}
			catch (error) {
				Log.error("unable to write js/positions.js with the discovered module positions\nmake the MagicMirror/js folder writeable by the user starting MagicMirror");
			}
		}
		// return the list to the caller
		return modulePositions;
	}
};