make env validation errors clear

* modify mail smtp variable names

apps/server/src/integrations/environment/environment.validation.ts

@@ -1,12 +1,16 @@
-import { IsNotEmpty, IsUrl, validateSync } from 'class-validator';
+import { IsNotEmpty, IsNotIn, IsUrl, validateSync } from 'class-validator';
 import { plainToInstance } from 'class-transformer';
 
 export class EnvironmentVariables {
   @IsNotEmpty()
-  @IsUrl({ protocols: ['postgres', 'postgresql'], require_tld: false })
+  @IsUrl(
+    { protocols: ['postgres', 'postgresql'], require_tld: false },
+    { message: 'DATABASE_URL must be a valid postgres connection string' },
+  )
   DATABASE_URL: string;
 
   @IsNotEmpty()
+  @IsNotIn(['REPLACE_WITH_LONG_SECRET'])
   APP_SECRET: string;
 }
 
@@ -14,14 +18,21 @@ export function validate(config: Record<string, any>) {
   const validatedConfig = plainToInstance(EnvironmentVariables, config);
 
   const errors = validateSync(validatedConfig);
+
+  console.error(
+    'The EnvironmentVariables has failed the following validations:',
+  );
+
   if (errors.length > 0) {
     errors.map((error) => {
-      console.error(error.toString());
+      console.log(JSON.stringify(error.constraints));
     });
+
     console.log(
       'Please fix the environment variables and try again. Shutting down...',
     );
     process.exit(1);
   }
+
   return validatedConfig;
 }