feat: upload module (#486)

* feat: wip upload module

* feat: local storage and serve local images

* feat: protect against injections

* feat: server local and s3 files

* fix: use storage location when serving local files

* feat: cross field env validation

server/src/integrations/environment/decorators/is-aws-region.decorator.ts

@@ -0,0 +1,26 @@
+import {
+  registerDecorator,
+  ValidationOptions,
+  ValidatorConstraint,
+  ValidatorConstraintInterface,
+} from 'class-validator';
+
+@ValidatorConstraint({ async: true })
+export class IsAWSRegionConstraint implements ValidatorConstraintInterface {
+  validate(region: string) {
+    const regex = /^[a-z]{2}-[a-z]+-\d{1}$/;
+    return regex.test(region); // Returns true if region matches regex
+  }
+}
+
+export function IsAWSRegion(validationOptions?: ValidationOptions) {
+  return function (object: object, propertyName: string) {
+    registerDecorator({
+      target: object.constructor,
+      propertyName: propertyName,
+      options: validationOptions,
+      constraints: [],
+      validator: IsAWSRegionConstraint,
+    });
+  };
+}

server/src/integrations/environment/decorators/is-duration.decorator.ts

@@ -0,0 +1,27 @@
+import {
+  registerDecorator,
+  ValidationOptions,
+  ValidatorConstraint,
+  ValidatorConstraintInterface,
+} from 'class-validator';
+
+@ValidatorConstraint({ async: true })
+export class IsDurationConstraint implements ValidatorConstraintInterface {
+  validate(duration: string) {
+    const regex =
+      /^-?[0-9]+(.[0-9]+)?(m(illiseconds?)?|s(econds?)?|h((ou)?rs?)?|d(ays?)?|w(eeks?)?|M(onths?)?|y(ears?)?)?$/;
+    return regex.test(duration); // Returns true if duration matches regex
+  }
+}
+
+export function IsDuration(validationOptions?: ValidationOptions) {
+  return function (object: object, propertyName: string) {
+    registerDecorator({
+      target: object.constructor,
+      propertyName: propertyName,
+      options: validationOptions,
+      constraints: [],
+      validator: IsDurationConstraint,
+    });
+  };
+}