feat(domain-core): add email subscription rejection levels

packages/domain-core/src/Domain/Email/EmailSubscriptionRejectionLevel.spec.ts

@@ -0,0 +1,18 @@
+import { EmailSubscriptionRejectionLevel } from './EmailSubscriptionRejectionLevel'
+
+describe('EmailSubscriptionRejectionLevel', () => {
+  it('should create a value object', () => {
+    const valueOrError = EmailSubscriptionRejectionLevel.create(EmailSubscriptionRejectionLevel.LEVELS.SignIn)
+
+    expect(valueOrError.isFailed()).toBeFalsy()
+    expect(valueOrError.getValue().value).toEqual('SIGN_IN')
+  })
+
+  it('should not create an invalid value object', () => {
+    for (const value of ['', undefined, null, 0, 'FOOBAR']) {
+      const valueOrError = EmailSubscriptionRejectionLevel.create(value as string)
+
+      expect(valueOrError.isFailed()).toBeTruthy()
+    }
+  })
+})

packages/domain-core/src/Domain/Email/EmailSubscriptionRejectionLevel.ts

@@ -0,0 +1,30 @@
+import { Result } from '../Core/Result'
+import { ValueObject } from '../Core/ValueObject'
+
+import { EmailSubscriptionRejectionLevelProps } from './EmailSubscriptionRejectionLevelProps'
+
+export class EmailSubscriptionRejectionLevel extends ValueObject<EmailSubscriptionRejectionLevelProps> {
+  static readonly LEVELS = {
+    SignIn: 'SIGN_IN',
+    Marketing: 'MARKETING',
+    FailedCloudBackup: 'FAILED_CLOUD_BACKUP',
+    FailedEmailBackup: 'FAILED_EMAIL_BACKUP',
+  }
+
+  get value(): string {
+    return this.props.value
+  }
+
+  private constructor(props: EmailSubscriptionRejectionLevelProps) {
+    super(props)
+  }
+
+  static create(name: string): Result<EmailSubscriptionRejectionLevel> {
+    const isValidName = Object.values(this.LEVELS).includes(name)
+    if (!isValidName) {
+      return Result.fail<EmailSubscriptionRejectionLevel>(`Invalid subscription rejection level: ${name}`)
+    } else {
+      return Result.ok<EmailSubscriptionRejectionLevel>(new EmailSubscriptionRejectionLevel({ value: name }))
+    }
+  }
+}

packages/domain-core/src/Domain/Email/EmailSubscriptionRejectionLevelProps.ts

@@ -0,0 +1,3 @@
+export interface EmailSubscriptionRejectionLevelProps {
+  value: string
+}

packages/domain-core/src/Domain/index.ts

@@ -20,6 +20,9 @@ export * from './Core/Validator'
 export * from './Core/ValueObject'
 export * from './Core/ValueObjectProps'
 
+export * from './Email/EmailSubscriptionRejectionLevel'
+export * from './Email/EmailSubscriptionRejectionLevelProps'
+
 export * from './Mapping/MapperInterface'
 
 export * from './Subscription/SubscriptionPlanName'