feat(classes): allow template variables

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@nextnm/nestjs-mailgun",
-  "version": "1.0.4",
+  "version": "1.1.0",
   "description": "NestJS provider for sending emails with mailgun",
   "author": "Nuno Carvalhão <[email protected]>",
   "license": "MIT",

src/nestjs-mailgun/classes/mailgun-email-model.ts

@@ -0,0 +1,20 @@
+import { EmailOptions } from '../services/relay/mailgun.service';
+
+export class MailgunEmailModel implements EmailOptions {
+  public 'h:X-Mailgun-Variables'?: string;
+
+  constructor(
+    public from: string,
+    public to: string | string[],
+    public subject: string,
+    public text?: string,
+    public html?: string,
+    public template?: string,
+    public attachment?: any,
+    public templateVariables?: { [key: string]: any },
+  ) {
+    this['h:X-Mailgun-Variables'] = templateVariables
+      ? JSON.stringify(templateVariables)
+      : this['h:X-Mailgun-Variables'];
+  }
+}

src/nestjs-mailgun/services/relay/mailgun.service.ts

@@ -2,6 +2,7 @@ import { Injectable, Inject } from '@nestjs/common';
 import { MAILGUN_CONFIGURATION } from '../../tokens/tokens';
 import * as mailgunConfig from 'mailgun-js';
 import { ConfigurationMailgun } from '../../../nestjs-mailgun/configuration';
+import { MailgunEmailModel } from '../../../nestjs-mailgun/classes/mailgun-email-model';
 
 export interface EmailOptions {
   from: string;
@@ -11,9 +12,7 @@ export interface EmailOptions {
   html?: string;
   template?: string;
   attachment?;
-  'recipient-variables'?: {
-    [email: string]: any;
-  };
+  'h:X-Mailgun-Variables'?: string;
 }
 @Injectable()
 export class MailgunService {
@@ -30,7 +29,7 @@ export class MailgunService {
     });
   }
 
-  public sendEmail(emailOptions: EmailOptions): Promise<boolean> {
+  public sendEmail(emailOptions: EmailOptions | MailgunEmailModel): Promise<any> {
     return new Promise((resolve, reject) => {
       this.mailgun.messages().send(emailOptions, (error, body) => {
         if (error) {