"use strict";

const colors = require("chalk");
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.getConfigPath())) {
			log.error(`${Helper.getConfigPath()} does not exist.`);
			return;
		}

		log.info("Retrieving information about the package...");

		const split = packageName.split("@");
		packageName = split[0];
		const packageVersion = split[1] || "latest";

		packageJson(packageName, {
			fullMetadata: true,
			version: packageVersion,
		}).then((json) => {
			if (!("thelounge" in json)) {
				log.error(`${colors.red(json.name + " v" + json.version)} does not have The Lounge metadata.`);

				process.exit(1);
			}

			log.info(`Installing ${colors.green(json.name + " v" + json.version)}...`);

			const packagesPath = Helper.getPackagesPath();
			const packagesConfig = path.join(packagesPath, "package.json");

			// Create node_modules folder, otherwise yarn will start walking upwards to find one
			fsextra.ensureDirSync(path.join(packagesPath, "node_modules"));

			// Create package.json with private set to true, if it doesn't exist already
			if (!fs.existsSync(packagesConfig)) {
				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 yarn = path.join(
				__dirname,
				"..",
				"..",
				"node_modules",
				"yarn",
				"bin",
				"yarn.js"
			);

			let success = false;
			const add = child.spawn(
				process.execPath,
				[
					yarn,
					"add",
					"--json",
					"--exact",
					"--production",
					"--ignore-scripts",
					"--non-interactive",
					"--cwd",
					packagesPath,
					`${json.name}@${json.version}`,
				]
			);

			add.stdout.on("data", (data) => {
				data.toString().trim().split("\n").forEach((line) => {
					line = JSON.parse(line);

					if (line.type === "success") {
						success = true;
					}
				});
			});

			add.on("error", (e) => {
				log.error(`${e}`);
				process.exit(1);
			});

			add.on("close", (code) => {
				if (!success || code !== 0) {
					log.error(`Failed to install ${colors.green(json.name + " v" + json.version)}. Exit code: ${code}`);
					return;
				}

				log.info(`${colors.green(json.name + " v" + json.version)} has been successfully installed.`);
			});
		}).catch((e) => {
			log.error(`${e}`);
			process.exit(1);
		});
	});