feat: implement configs and email template configs

src/config/config.ts

@@ -2,6 +2,7 @@ export default async () => ({
   base: {
     localUrl: `${process.env.BASE_URL}`,
     fromEmail: `${process.env.FROM_EMAIL}`,
+    appName: `${process.env.APP_NAME ?? 'Waterwolf Auth'}`,
   },
   redis: {
     host: process.env['REDIS_HOST'] ?? 'localhost',

src/mail/mail.service.ts

@@ -18,29 +18,60 @@ export class MailService {
    * Send a password reset email to the user
    * @param email The email address of the user
    */
-  public async sendPasswordResetEmail(email: string, resetCode: string): Promise<void> {}
+  public async sendPasswordResetEmail(email: string, resetCode: string): Promise<void> {
+    this.logger.debug(`Sending password reset email to ${email}`);
+
+    const resetUrl = `${this.configService.getOrThrow('base.localUrl')}/auth/reset-password?code=${resetCode}`;
+
+    const { html: templateHtml, text: templateText } = await this.fetchTemplate('reset-password');
+
+    const html = Handlebars.compile(templateHtml)({ resetUrl });
+    const text = Handlebars.compile(templateText)({ resetUrl });
+
+    this.postalService.sendMessage({
+      to: [email],
+      subject: 'Reset your password',
+      from: this.configService.getOrThrow('MAIL_FROM'),
+      plain_body: text,
+      html_body: html,
+    });
+  }
 
   /**
    * Send a welcome email to the user
    * @param email The email address of the user
    */
-  public async sendWelcomeEmail(email: string): Promise<void> {}
+  public async sendWelcomeEmail(email: string): Promise<void> {
+    this.logger.debug(`Sending verification email to ${email}`);
+
+    const { html: templateHtml, text: templateText } = await this.fetchTemplate('welcome');
+
+    const html = Handlebars.compile(templateHtml)({});
+    const text = Handlebars.compile(templateText)({});
+
+    this.postalService.sendMessage({
+      to: [email],
+      subject: `Welcome to ${this.configService.getOrThrow('base.appName')}`,
+      from: this.configService.getOrThrow('MAIL_FROM'),
+      plain_body: text,
+      html_body: html,
+    });
+  }
 
   /**
    * Send a verification email to the user
    * @param email The email address of the user
    */
   public async sendVerificationEmail(email: string, code: string): Promise<void> {
-    this.logger.debug(`Sending welcome email to ${email}`);
+    this.logger.debug(`Sending verification email to ${email}`);
 
-    const verificationUrl = `${this.configService.getOrThrow('BASE_URL')}/auth/verify?code=${code}`;
+    const verificationUrl = `${this.configService.getOrThrow('base.localUrl')}/auth/verify?code=${code}`;
 
     //handlebar render email template
     const { html: templateHtml, text: templateText } = await this.fetchTemplate('verify-email');
 
     //replace the placeholders with the actual values
-    const template = Handlebars.compile(templateHtml);
+    const html = Handlebars.compile(templateHtml)({ verificationUrl });
-    const html = template({ verificationUrl });
     const text = Handlebars.compile(templateText)({ verificationUrl });
 
     this.postalService.sendMessage({
@@ -56,7 +87,22 @@ export class MailService {
    * Send a password changed email to the user
    * @param email The email address of the user
    */
-  public async sendPasswordChangedEmail(email: string): Promise<void> {}
+  public async sendPasswordChangedEmail(email: string): Promise<void> {
+    this.logger.debug(`Sending password changed email to ${email}`);
+
+    const { html: templateHtml, text: templateText } = await this.fetchTemplate('password-changed');
+
+    const html = Handlebars.compile(templateHtml)({});
+    const text = Handlebars.compile(templateText)({});
+
+    this.postalService.sendMessage({
+      to: [email],
+      subject: 'Password changed',
+      from: this.configService.getOrThrow('MAIL_FROM'),
+      plain_body: text,
+      html_body: html,
+    });
+  }
 
   /**
    * Private function. Reads the html email template from the file system and returns the content