Introduce config module

src/config/load.ts

@@ -0,0 +1,57 @@
+/**
+ * Config loader
+ */
+
+import * as fs from 'fs';
+import { URL } from 'url';
+import * as yaml from 'js-yaml';
+import { Source, Mixin } from './types';
+import isUrl = require('is-url');
+
+/**
+ * Path of configuration directory
+ */
+const dir = `${__dirname}/../../.config`;
+
+/**
+ * Path of configuration file
+ */
+const path = process.env.NODE_ENV == 'test'
+	? `${dir}/test.yml`
+	: `${dir}/default.yml`;
+
+export default function load() {
+	const config = yaml.safeLoad(fs.readFileSync(path, 'utf-8')) as Source;
+
+	const mixin = {} as Mixin;
+
+	// Validate URLs
+	if (!isUrl(config.url)) urlError(config.url);
+
+	const url = new URL(config.url);
+	config.url = normalizeUrl(config.url);
+
+	mixin.host = url.host;
+	mixin.hostname = url.hostname;
+	mixin.scheme = url.protocol.replace(/:$/, '');
+	mixin.ws_scheme = mixin.scheme.replace('http', 'ws');
+	mixin.ws_url = `${mixin.ws_scheme}://${mixin.host}`;
+	mixin.api_url = `${mixin.scheme}://${mixin.host}/api`;
+	mixin.auth_url = `${mixin.scheme}://${mixin.host}/auth`;
+	mixin.dev_url = `${mixin.scheme}://${mixin.host}/dev`;
+	mixin.docs_url = `${mixin.scheme}://${mixin.host}/docs`;
+	mixin.stats_url = `${mixin.scheme}://${mixin.host}/stats`;
+	mixin.status_url = `${mixin.scheme}://${mixin.host}/status`;
+	mixin.drive_url = `${mixin.scheme}://${mixin.host}/files`;
+
+	return Object.assign(config, mixin);
+}
+
+function normalizeUrl(url: string) {
+	return url[url.length - 1] === '/' ? url.substr(0, url.length - 1) : url;
+}
+
+function urlError(url: string) {
+	console.error(`「${url}」は、正しいURLではありません。先頭に http:// または https:// をつけ忘れてないかなど確認してください。`);
+	process.exit();
+}