Add ability to send an email to manage your preferences from the website about vaccine-availability-notifications HOT 1 CLOSED

Unfortunately I don't have a great way to run the API locally outside of my account. I'll look at creating a test harness around the API or migrating the Terraform into this repo to make it easier for other people to work on.

It could probably broken down into a two smaller pieces of work.

1. Create an endpoint, maybe something like a POST to /user/manage_preferences

   • Accepts a JSON body with an email field
   • Look up the user by email using the fetch_user function
   • If the user exists send them an email using the send_emails_to_users function
   • Create a new EmailTemplate that says, "Hello, press the button below to manage your notification preferences." and then has a button to link back to the preferences page. Similar to how the welcome and new appointment emails are setup.

2. Update the preferences page to display a form that accepts an email and calls the new endpoint if:

   • There isn't a token query param in the URL
   • Or the API errors out when trying to load the user's notification preferences

If you have any better ideas for what the route should be, I'm all for it. Non restful endpoints like this are always a pain to name haha.

from vaccine-availability-notifications.