feat(Utils): add env parser

packages/utils/package.json

@@ -5,6 +5,8 @@
 	"license": "MIT",
 	"type": "module",
 	"exports": {
+		"./regex.js": "./dist/src/regex.js",
+		"./env.js": "./dist/src/env.js",
 		"./types.js": "./dist/src/types.js",
 		"./constants.js": "./dist/src/constants.js",
 		"./RequestWithPagination.js": "./dist/src/RequestWithPagination.js"
@@ -16,8 +18,7 @@
 		"test": "vitest run"
 	},
 	"dependencies": {
-		"lru-cache": "^10.0.0",
-		"probot": "12.3.1"
+		"@snowcrystals/icicle": "^2.0.4"
 	},
 	"devDependencies": {
 		"@types/node": "^18.16.18",

packages/utils/src/env.ts

@@ -0,0 +1,51 @@
+import { config } from "dotenv";
+config();
+
+import { ZodError, z } from "zod";
+import { Logger } from "@snowcrystals/icicle";
+import { bold } from "colorette";
+import { PRIVATE_KEY_REGEX } from "./regex.js";
+
+const logger = new Logger();
+const envSchema = z.object({
+	APP_ID: z.string(),
+	PRIVATE_KEY: z.string().regex(PRIVATE_KEY_REGEX),
+
+	WEBHOOK_SECRET: z.string(),
+
+	GITHUB_CLIENT_ID: z.string(),
+	GITHUB_CLIENT_SECRET: z.string(),
+
+	PORT: z.string().max(4),
+	NODE_ENV: z.string(),
+
+	REDIS_DATABASE_URL: z.string().url()
+});
+
+try {
+	envSchema.parse(process.env);
+} catch (err) {
+	if (!(err instanceof ZodError)) {
+		console.error(err);
+		process.exit(1);
+	}
+
+	// Filter out missing ones
+	const missing = err.issues.filter((issue) => issue.message === "Required").map((issue) => bold(issue.path[0]));
+	logger.fatal(`The following environment variables are missing: ${missing}`);
+
+	const failedTest = err.issues.filter((issue) => issue.message !== "Required");
+	for (const failedItem of failedTest) {
+		// Environment variable
+		const path = failedItem.path[0];
+		logger.fatal(`[${path}]: Failed the test with reason: ${failedItem.message}`);
+	}
+
+	process.exit(1);
+}
+
+declare global {
+	namespace NodeJS {
+		interface ProcessEnv extends z.infer<typeof envSchema> {}
+	}
+}

packages/utils/src/regex.ts

@@ -0,0 +1 @@
+export const PRIVATE_KEY_REGEX = /\s*(\bBEGIN\b).*(PRIVATE KEY\b)\s*/gm;