feat: mail notifications of sales transactions

packages/server/src/services/MailNotification/utils.ts

@@ -0,0 +1,33 @@
+import { isEmpty } from 'lodash';
+import { ServiceError } from '@/exceptions';
+import { CommonMailOptions, CommonMailOptionsDTO } from '@/interfaces';
+import { ERRORS } from './constants';
+
+/**
+ * Merges the mail options with incoming options.
+ * @param {Partial<SaleInvoiceMailOptions>} mailOptions
+ * @param {Partial<SendInvoiceMailDTO>} overridedOptions
+ * @throws {ServiceError}
+ */
+export function parseAndValidateMailOptions(
+  mailOptions: Partial<CommonMailOptions>,
+  overridedOptions: Partial<CommonMailOptionsDTO>
+) {
+  const mergedMessageOptions = {
+    ...mailOptions,
+    ...overridedOptions,
+  };
+  if (isEmpty(mergedMessageOptions.from)) {
+    throw new ServiceError(ERRORS.MAIL_FROM_NOT_FOUND);
+  }
+  if (isEmpty(mergedMessageOptions.to)) {
+    throw new ServiceError(ERRORS.MAIL_TO_NOT_FOUND);
+  }
+  if (isEmpty(mergedMessageOptions.subject)) {
+    throw new ServiceError(ERRORS.MAIL_SUBJECT_NOT_FOUND);
+  }
+  if (isEmpty(mergedMessageOptions.body)) {
+    throw new ServiceError(ERRORS.MAIL_BODY_NOT_FOUND);
+  }
+  return mergedMessageOptions;
+}