Prepare Emails for Lambda

[hannogrimm]

@Darjusch Let's work on this branch to sync on potential changes to the email service <-> mongodb communication.

The email service works as follows:

• We use react-email to generate good-looking HTML templates that we can fill with custom data. (e.g. First Name on "Hello ${firstName},".
• We have lambda functions for the individual email templates in the src/functions/ folder.
  • These templates are rendered with the provided props through react-email/render.
  • The props are retrieved on the lambda handler by deconstructing the event.
  • You can test this behaviour in the Lambda GUI by creating a test event and providing an Event JSON with the necessary props.

These are the current interfaces for the Event JSON's:

sendSingleKitaNotificationsEmail

{
  to: string; // email recipient
  props: {
    kitaName: string; // name of the kita the notifications are turned on for, e.g. "Kita Rosengarten"
    consentId: string; // consent to send email (row uuid)
  };
}

sendAreaNotificationsEmail

{
  to: string; // email recipient
  props: {
   areaDescription: string; // description of the area notifications are turned on for, e.g. "Kollwitzkiez"
   consentId: string;
   }
}

sendServiceSignupEmail

{
  to: string; // email recipient
  props: {
   consentId: string;
   }
}

These properties are required for a successful run of the lambda functions.

[Darjusch]

@hannogrimm

Where does the index file come from? If i run yarn build i get: