feat: mail notifications of sales transactions

packages/server/src/lib/Mail/index.ts

@@ -2,18 +2,13 @@ import fs from 'fs';
 import Mustache from 'mustache';
 import { Container } from 'typedi';
 import path from 'path';
-import { IMailable } from '@/interfaces';
-
-interface IMailAttachment {
-  filename: string;
-  path: string;
-  cid: string;
-}
+import { IMailAttachment } from '@/interfaces';
 
 export default class Mail {
   view: string;
-  subject: string;
-  to: string;
+  subject: string = '';
+  content: string = '';
+  to: string | string[];
   from: string = `${process.env.MAIL_FROM_NAME} ${process.env.MAIL_FROM_ADDRESS}`;
   data: { [key: string]: string | number };
   attachments: IMailAttachment[];
@@ -21,16 +16,24 @@ export default class Mail {
   /**
    * Mail options.
    */
-  private get mailOptions() {
+  public get mailOptions() {
     return {
       to: this.to,
       from: this.from,
       subject: this.subject,
-      html: this.render(this.data),
+      html: this.html,
       attachments: this.attachments,
     };
   }
 
+  /**
+   * Retrieves the html content of the mail.
+   * @returns {string}
+   */
+  public get html() {
+    return this.view ? Mail.render(this.view, this.data) : this.content;
+  }
+
   /**
    * Sends the given mail to the target address.
    */
@@ -52,7 +55,7 @@ export default class Mail {
    * Set send mail to address.
    * @param {string} to -
    */
-  setTo(to: string) {
+  setTo(to: string | string[]) {
     this.to = to;
     return this;
   }
@@ -62,11 +65,16 @@ export default class Mail {
    * @param {string} from
    * @return {}
    */
-  private setFrom(from: string) {
+  setFrom(from: string) {
     this.from = from;
     return this;
   }
 
+  /**
+   * Set attachments to the mail.
+   * @param {IMailAttachment[]} attachments 
+   * @returns {Mail}
+   */
   setAttachments(attachments: IMailAttachment[]) {
     this.attachments = attachments;
     return this;
@@ -95,21 +103,26 @@ export default class Mail {
     return this;
   }
 
+  setContent(content: string) {
+    this.content = content;
+    return this;
+  }
+
   /**
    * Renders the view template with the given data.
    * @param  {object} data
    * @return {string}
    */
-  render(data): string {
-    const viewContent = this.getViewContent();
+  static render(view: string, data: Record<string, any>): string {
+    const viewContent = Mail.getViewContent(view);
     return Mustache.render(viewContent, data);
   }
 
   /**
    * Retrieve view content from the view directory.
    */
-  private getViewContent(): string {
-    const filePath = path.join(global.__views_dir, `/${this.view}`);
+  static getViewContent(view: string): string {
+    const filePath = path.join(global.__views_dir, `/${view}`);
     return fs.readFileSync(filePath, 'utf8');
   }
 }