From 8e4b05e556848cc9893495871b48945983318632 Mon Sep 17 00:00:00 2001
From: alexeh <alexurola@gmail.com>
Date: Sun, 13 Oct 2024 06:35:39 +0200
Subject: [PATCH] add isolated email templates and template builder

---
 .../email/templates/email-template.builder.ts | 37 +++++++++++++++++++
 .../email-update-confirmation.template.ts     | 15 ++++++++
 .../templates/reset-password.template.ts      | 15 ++++++++
 .../email/templates/welcome-email.template.ts | 12 ++++++
 4 files changed, 79 insertions(+)
 create mode 100644 api/src/modules/notifications/email/templates/email-template.builder.ts
 create mode 100644 api/src/modules/notifications/email/templates/email-update-confirmation.template.ts
 create mode 100644 api/src/modules/notifications/email/templates/reset-password.template.ts
 create mode 100644 api/src/modules/notifications/email/templates/welcome-email.template.ts

diff --git a/api/src/modules/notifications/email/templates/email-template.builder.ts b/api/src/modules/notifications/email/templates/email-template.builder.ts
new file mode 100644
index 00000000..abda136d
--- /dev/null
+++ b/api/src/modules/notifications/email/templates/email-template.builder.ts
@@ -0,0 +1,37 @@
+import { WELCOME_EMAIL_HTML_CONTENT } from '@api/modules/notifications/email/templates/welcome-email.template';
+import { RESET_PASSWORD_HTML_CONTENT } from '@api/modules/notifications/email/templates/reset-password.template';
+import { EMAIL_UPDATE_CONFIRMATION_HTML_CONTENT } from '@api/modules/notifications/email/templates/email-update-confirmation.template';
+
+export enum TEMPLATE_TYPE {
+  WELCOME = 'welcome',
+  RESET_PASSWORD = 'reset-password',
+  EMAIL_UPDATE_CONFIRMATION = 'email-update-confirmation',
+}
+
+export interface TemplateConfig {
+  url: string;
+  expiration: number;
+  type: TEMPLATE_TYPE;
+}
+
+export class EmailTemplateBuilder {
+  url: string;
+  expiration: number;
+  type: TEMPLATE_TYPE;
+  templateMap = {
+    WELCOME_EMAIL_HTML_CONTENT: WELCOME_EMAIL_HTML_CONTENT,
+    RESET_PASSWORD_HTML_CONTENT: RESET_PASSWORD_HTML_CONTENT,
+    EMAIL_UPDATE_CONFIRMATION_HTML_CONTENT:
+      EMAIL_UPDATE_CONFIRMATION_HTML_CONTENT,
+  };
+  constructor(contentConfig: TemplateConfig) {
+    this.url = contentConfig.url;
+    this.expiration = contentConfig.expiration;
+    this.type = contentConfig.type;
+  }
+
+  build() {
+    const template = this.templateMap[this.type];
+    return template(this.url, this.expiration);
+  }
+}
diff --git a/api/src/modules/notifications/email/templates/email-update-confirmation.template.ts b/api/src/modules/notifications/email/templates/email-update-confirmation.template.ts
new file mode 100644
index 00000000..4a895942
--- /dev/null
+++ b/api/src/modules/notifications/email/templates/email-update-confirmation.template.ts
@@ -0,0 +1,15 @@
+export const EMAIL_UPDATE_CONFIRMATION_HTML_CONTENT = (
+  url,
+  expiration,
+): string => `
+    <h1>Dear User,</h1>
+    <br/>
+    <p>We have received a request to change the email address associated with your account. If you initiated this request, please confirm the change by clicking the link below:</p>
+    <br/>
+    <p><a href="${url}" target="_blank" rel="noopener noreferrer">Confirm Email Change</a></p>
+    <br/>
+    <p>This link will redirect you to our app to confirm the new email address. For security reasons, this link will expire in ${expiration}.</p>
+    <p>If you did not request this email change, please ignore this message; your account information will remain unchanged.</p>
+    <br/>
+    <p>Thank you for using our platform. We value your security and account privacy.</p>
+    <p>Best regards.</p>`;
diff --git a/api/src/modules/notifications/email/templates/reset-password.template.ts b/api/src/modules/notifications/email/templates/reset-password.template.ts
new file mode 100644
index 00000000..d75d627a
--- /dev/null
+++ b/api/src/modules/notifications/email/templates/reset-password.template.ts
@@ -0,0 +1,15 @@
+export const RESET_PASSWORD_HTML_CONTENT = (
+  url: string,
+  expiration: number,
+): string => `
+    <h1>Dear User,</h1>
+    <br/>
+    <p>We recently received a request to reset your password for your account. If you made this request, please click on the link below to securely change your password:</p>
+    <br/>
+    <p><a href="${url}" target="_blank" rel="noopener noreferrer">Secure Password Reset Link</a></p>
+    <br/>
+    <p>This link will direct you to our app to create a new password. For security reasons, this link will expire after ${expiration}.</p>
+    <p>If you did not request a password reset, please ignore this email; your password will remain the same.</p>
+    <br/>
+    <p>Thank you for using the platform. We're committed to ensuring your account's security.</p>
+    <p>Best regards.</p>`;
diff --git a/api/src/modules/notifications/email/templates/welcome-email.template.ts b/api/src/modules/notifications/email/templates/welcome-email.template.ts
new file mode 100644
index 00000000..df52a50c
--- /dev/null
+++ b/api/src/modules/notifications/email/templates/welcome-email.template.ts
@@ -0,0 +1,12 @@
+export const WELCOME_EMAIL_HTML_CONTENT = (url, expiration): string => `
+    <h1>Dear User,</h1>
+    <br/>
+    <p>We recently received a request to reset your password for your account. If you made this request, please click on the link below to securely change your password:</p>
+    <br/>
+    <p><a href="${url}" target="_blank" rel="noopener noreferrer">Secure Password Reset Link</a></p>
+    <br/>
+    <p>This link will direct you to our app to create a new password. For security reasons, this link will expire after ${expiration}.</p>
+    <p>If you did not request a password reset, please ignore this email; your password will remain the same.</p>
+    <br/>
+    <p>Thank you for using the platform. We're committed to ensuring your account's security.</p>
+    <p>Best regards.</p>`;