Write scraper for Rite Aid

[Mr0grog]

All of Rite Aid's APIs (the one we currently use, the one VaccineSpotter used to use, and the newer, public SMART SL API in #159) have been down for almost a week. We’ve spent much of that time trying to get in touch with them on various channels, along with our contacts at the State of NJ and USDS, but they’ve been completely unresponsive.

So! It’s time to start scraping, unfortunately.

It looks like their scheduling web app has its own API for use by XHR (yay!) and that we can hit at URLs like: https://www.riteaid.com/content/riteaid-web/en.racloudgetavailablestores.json?address=08103&radius=25&vaccineIds=9-PREF-113,11-PREF-114,13-PREF-115&showAllStoresWithAvailibility=false&fetchMechanismVersion=2&count=100

I can’t figure out how to page through results, but you can set count and radius pretty high, so that may eliminate any need for it.

vaccineIds appear to be:

• 9-PREF-113: Moderna Adult Dose 1, or Pfizer Adult Dose 2 (but in this case add &dose1appointmentDate=2021-10-22T00:00:00)
• 42-PREF-113: Moderna Adult Booster
• 11-PREF-114: Pfizer Adult Dose 1, or Pfizer Adult Dose 2 (but in this case add &dose1appointmentDate=2021-10-22T00:00:00)
• 43-PREF-114: Pfizer Adult Booster
• 13-PREF-115: J&J Adult Dose 1
• 46-PREF-115: J&J Adult Booster 1
• 47-PREF-122: Pfizer Pediatric Dose 1

This is high priority, since there is actually a real crunch right now (booster and pediatrics), and locations often don’t have appointments available. It’s super important for NJ.

[Mr0grog]

It looks like Washington’s API is not showing Rite Aid (e.g. https://vaccinelocator.doh.wa.gov/locations/98115), likely because of this problem, so once we’ve got things solved here, we should let them know they can use us if helpful.

[Mr0grog]

This was solved in #488.