chore: move backend to hono + typescript (#558)

* feat: setup secure presigned uploads and downloads

* clean up

* update lock

* Get presigned url finally working

* 557: Migrate backend to hono + ts

* chore: update Dockerfile and package.json for backend configuration

* add dev command

* remove unused packages

* Enhance backend API and frontend components for course management

- Updated CORS configuration in the backend to allow specific methods and headers.
- Refactored lesson download endpoint to use a new route for PDF downloads.
- Removed unused certificate download functionality from the lesson router.
- Updated frontend components to reflect changes in API endpoints and improve video upload functionality.
- Introduced new video upload component and adjusted video handling in lesson materials.
- Cleaned up unnecessary imports and optimized component structure for better performance.

* PR cleanups

* Enhance email configuration by adding SMTP_SENDER environment variable

- Updated docker-compose.yaml to include SMTP_SENDER.
- Modified Dockerfile to accept SMTP_SENDER as an argument.
- Updated environment schema in env.ts to define SMTP_SENDER as optional.
- Adjusted mail service to use SMTP_SENDER for the email 'from' field.
- Updated documentation to reflect the new SMTP_SENDER variable.

* Remove debug log statement from sendEmail function

---------

Co-authored-by: Iniubong Obonguko <iniubongobonguko2018@gmail.com>

apps/dashboard/src/mail/sendEmail.ts

@@ -1,35 +1,36 @@
 import { env } from '$env/dynamic/public';
 
-const sendEmail = async (
-  emailDataArray: {
-    from?: string;
-    to: string;
-    subject: string;
-    content: string;
-    replyTo?: string;
-    isPersonalEmail?: boolean;
-  }[]
-) => {
-  try {
-    const response = await fetch(`${env.PUBLIC_SERVER_URL}/sendEmail`, {
-      method: 'POST',
-      headers: {
-        'Content-Type': 'application/json'
-      },
-      body: JSON.stringify(emailDataArray)
-    });
+const sendEmail = (sFetch: typeof fetch) => {
+  return async (
+    emailDataArray: {
+      from?: string;
+      to: string;
+      subject: string;
+      content: string;
+      replyTo?: string;
+      isPersonalEmail?: boolean;
+    }[]
+  ) => {
+    try {
+      const response = await sFetch(`${env.PUBLIC_SERVER_URL}/mail/send`, {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json'
+        },
+        body: JSON.stringify(emailDataArray)
+      });
 
-    if (!response.ok) {
-      console.log('Failed to send emails');
+      if (!response.ok) {
+        console.log('Failed to send emails');
+        return;
+      }
+
+      console.log('Emails sent successfully:', response);
+      return response;
+    } catch (error) {
+      console.error('Error sending emails:', error);
       return;
     }
-
-    const responseData = await response.json();
-    console.log('Emails sent successfully:', responseData);
-    return responseData;
-  } catch (error) {
-    console.error('Error sending emails:', error);
-    return;
-  }
+  };
 };
 export default sendEmail;