🇺🇦 #StandWithUkraine Add environment variable validation

Author: raycharius

config/index.ts

@@ -3,13 +3,12 @@ export const ENV = process.env.NODE_ENV!;
 export const PORT = process.env.PORT!;
 export const HOST = process.env.HOST!;
 export const NEXTAUTH_URL = process.env.NEXTAUTH_URL!;
-export const AUTH_PROVIDER = process.env.AUTH_PROVIDER!;
 export const SLACK_TOGETHER_APP_TOKEN = process.env.SLACK_TOGETHER_APP_TOKEN!;
 export const SLACK_TOGETHER_APP_SIGNING_SECRET = process.env.SLACK_TOGETHER_APP_SIGNING_SECRET!;
 export const SLACK_MONITORING_CHANNEL_ID = process.env.SLACK_MONITORING_CHANNEL_ID!;
 export const SLACK_ORGANIZATION_CHANNEL_ID = process.env.SLACK_ORGANIZATION_CHANNEL_ID!;
 export const TOGETHER_ADMINISTRATOR_SLACK_USER_ID = process.env.TOGETHER_ADMINISTRATOR_SLACK_USER_ID!;
-export const SLACK_WORKSPACE_ID = process.env.SLACK_TEAM_ID!;
+export const SLACK_WORKSPACE_ID = process.env.SLACK_WORKSPACE_ID!;
 export const GOOGLE_GEOCODING_API_TOKEN = process.env.GOOGLE_GEOCODING_API_TOKEN!;
 export const GOOGLE_PLACES_API_TOKEN = process.env.GOOGLE_PLACES_API_TOKEN!;
 export const ALLOWED_REFERRER_ID = process.env.ALLOWED_REFERRER_ID!;
@@ -18,3 +17,27 @@ export const OKTA_CLIENT_SECRET = process.env.OKTA_CLIENT_SECRET!;
 export const OKTA_ISSUER = process.env.OKTA_ISSUER!;
 export const MAPBOX_MAP_TOKEN = process.env.MAPBOX_MAP_TOKEN!;
 export const JOBS_API_TOKEN = process.env.JOBS_API_TOKEN!;
+
+import { MissingEnvironmentVariableError } from '../exceptions';
+
+const validateEnvVariable = (variable: string, name: string): void | never => {
+  if (!variable) {
+    throw new MissingEnvironmentVariableError(name);
+  }
+};
+
+validateEnvVariable(ENV, 'ENV');
+validateEnvVariable(HOST, 'HOST');
+validateEnvVariable(NEXTAUTH_URL, 'NEXTAUTH_URL');
+validateEnvVariable(SLACK_TOGETHER_APP_TOKEN, 'SLACK_TOGETHER_APP_TOKEN');
+validateEnvVariable(SLACK_TOGETHER_APP_SIGNING_SECRET, 'SLACK_TOGETHER_APP_SIGNING_SECRET');
+validateEnvVariable(SLACK_MONITORING_CHANNEL_ID, 'SLACK_MONITORING_CHANNEL_ID');
+validateEnvVariable(SLACK_ORGANIZATION_CHANNEL_ID, 'SLACK_ORGANIZATION_CHANNEL_ID');
+validateEnvVariable(TOGETHER_ADMINISTRATOR_SLACK_USER_ID, 'TOGETHER_ADMINISTRATOR_SLACK_USER_ID');
+validateEnvVariable(SLACK_WORKSPACE_ID, 'SLACK_WORKSPACE_ID');
+validateEnvVariable(GOOGLE_GEOCODING_API_TOKEN, 'GOOGLE_GEOCODING_API_TOKEN');
+validateEnvVariable(GOOGLE_PLACES_API_TOKEN, 'GOOGLE_PLACES_API_TOKEN');
+validateEnvVariable(ALLOWED_REFERRER_ID, 'ALLOWED_REFERRER_ID');
+validateEnvVariable(MAPBOX_MAP_TOKEN, 'JOBS_API_TOKEN');
+validateEnvVariable(process.env.DATABASE_URL!, 'DATABASE_URL');
+validateEnvVariable(process.env.NEXTAUTH_SECRET!, 'NEXTAUTH_SECRET');

exceptions/MissingEnvironmentVariableError.ts

@@ -0,0 +1,12 @@
+import { ApplicationError } from './ApplicationError';
+
+export class MissingEnvironmentVariableError extends ApplicationError {
+  constructor(name: string) {
+    super({
+      status: 500,
+      code: null,
+      data: null,
+      message: `The environment variable ${name} is missing and is required for Together App to function correctly.`,
+    });
+  }
+}

exceptions/index.ts

@@ -9,5 +9,6 @@ export * from './InvalidSlackRequestError';
 export * from './LocationProviderError';
 export * from './MemberCannotRepeatCheckInError';
 export * from './MemberNotFoundError';
+export * from './MissingEnvironmentVariableError';
 export * from './NoLocationParamsProvidedError';
 export * from './SlackMemberProviderError';