Create 'lounge install' command

package.json

@@ -52,6 +52,7 @@
     "ldapjs": "1.0.1",
     "lodash": "4.17.4",
     "moment": "2.18.1",
+    "package-json": "4.0.1",
     "read": "1.0.7",
     "request": "2.82.0",
     "semver": "5.4.1",

src/command-line/index.js

@@ -32,6 +32,7 @@ require("./add");
 require("./remove");
 require("./reset");
 require("./edit");
+require("./install");
 
 program.parse(process.argv);
 

src/command-line/install.js

@@ -0,0 +1,82 @@
+"use strict";
+
+const colors = require("colors/safe");
+const program = require("commander");
+const Helper = require("../helper");
+const Utils = require("./utils");
+
+program
+	.command("install <package>")
+	.description("Install a theme or a package")
+	.on("--help", Utils.extraHelp)
+	.action(function(packageName) {
+		const fs = require("fs");
+		const fsextra = require("fs-extra");
+		const path = require("path");
+		const child = require("child_process");
+		const packageJson = require("package-json");
+
+		if (!fs.existsSync(Helper.CONFIG_PATH)) {
+			log.error(`${Helper.CONFIG_PATH} does not exist.`);
+			return;
+		}
+
+		packageJson(packageName, {
+			fullMetadata: true
+		}).then((json) => {
+			if (!("lounge" in json)) {
+				log.error(`${colors.red(packageName)} does not have The Lounge metadata.`);
+
+				process.exit(1);
+			}
+
+			log.info(`Installing ${colors.green(packageName)}...`);
+
+			const packagesPath = Helper.getPackagesPath();
+			const packagesParent = path.dirname(packagesPath);
+			const packagesConfig = path.join(packagesParent, "package.json");
+
+			// Create node_modules folder, otherwise npm will start walking upwards to find one
+			fsextra.ensureDirSync(packagesPath);
+
+			// Create package.json with private set to true to avoid npm warnings
+			fs.writeFileSync(packagesConfig, JSON.stringify({
+				private: true,
+				description: "Packages for The Lounge. All packages in node_modules directory will be automatically loaded.",
+			}, null, "\t"));
+
+			const npm = child.spawn(
+				process.platform === "win32" ? "npm.cmd" : "npm",
+				[
+					"install",
+					"--production",
+					"--no-save",
+					"--no-bin-links",
+					"--no-package-lock",
+					"--prefix",
+					packagesParent,
+					packageName
+				],
+				{
+					stdio: "inherit"
+				}
+			);
+
+			npm.on("error", (e) => {
+				log.error(`${e}`);
+				process.exit(1);
+			});
+
+			npm.on("close", (code) => {
+				if (code !== 0) {
+					log.error(`Failed to install ${colors.green(packageName)}. Exit code: ${code}`);
+					return;
+				}
+
+				log.info(`${colors.green(packageName)} has been successfully installed.`);
+			});
+		}).catch((e) => {
+			log.error(`${e}`);
+			process.exit(1);
+		});
+	});