Implement yaml config (#271)

src/backend/utils/appConfig.ts

@@ -0,0 +1,74 @@
+import { loadConfig } from 'config-loader';
+import * as process from 'process';
+import arg from 'arg';
+import path from 'path';
+import { z } from "zod";
+
+/**
+ * Configuration for Hawk errors catcher
+ */
+const HawkConfig = z.object({
+  backendToken: z.string().optional(), // Hawk backend token
+  frontendToken: z.string().optional(), // Hawk frontend token
+})
+
+const LocalDatabaseConfig = z.object({
+  driver: z.literal('local'),
+  local: z.object({
+    path: z.string()
+  })
+})
+
+const AuthConfig = z.object({
+  secret: z.string() // Secret for JWT
+})
+
+const FrontendConfig = z.object({
+  title: z.string(), // Title for pages
+  description: z.string(), // Description for pages
+  startPage: z.string(), // Start page
+  misprintsChatId: z.string().optional(), // Telegram chat id for misprints
+  yandexMetrikaId: z.string().optional(), // Yandex metrika id
+  carbon: z.object({
+    serve: z.string().optional(), // Carbon serve url
+    placement: z.string().optional(), // Carbon placement
+  }),
+  menu: z.array(z.union([z.string(), z.object({title: z.string(), uri: z.string()})])), // Menu for pages
+})
+
+/**
+ * Application configuration
+ */
+const AppConfig = z.object({
+  port: z.number(), // Port to listen on
+  host: z.string(), // Host to listen on
+  favicon: z.string().optional(), // Path or URL to favicon
+  uploads: z.string(), // Path to uploads folder
+  hawk: HawkConfig.optional().nullable(), // Hawk configuration
+  password: z.string(), // Password for admin panel
+  frontend: FrontendConfig, // Frontend configuration
+  auth: AuthConfig, // Auth configuration
+  database: LocalDatabaseConfig, // Database configuration
+})
+
+export type AppConfig = z.infer<typeof AppConfig>;
+
+const args = arg({ /* eslint-disable @typescript-eslint/naming-convention */
+  '--config': [ String ],
+  '-c': '--config',
+});
+
+const cwd = process.cwd();
+const paths = (args['--config'] || ['./app-config.yaml']).map((configPath) => {
+  if (path.isAbsolute(configPath)) {
+    return configPath;
+  }
+
+  return path.join(cwd, configPath);
+});
+
+const loadedConfig = loadConfig<AppConfig>(...paths);
+
+const appConfig = AppConfig.parse(loadedConfig)
+
+export default appConfig;