US - Event API anbinden

Value proposition

As a user i want to see real and current events to find things I am interested in.

NOTE:

Event categories are not included in the main API they have to be fetched separately
"preis" key sometimes includes a br tag that has to be removed
There are different Strings in "preis" that could be our "Kostenlos"
[x] Create branch US_Event_API
[x] MongoDB - add a "metaInfo" collection
[x] Add db/models/MetaInfo
- [x] create Schema {lastFetch: date }
[x] create api/metaInfo.js with a GET and a POST request
[ ] Create a function fetchEventsFromApi
- [ ] Fetch event categories and get category ids from the categories we will include (Because we can not be sure the ids will stay the same)
- [ ] For every category fetch the related events from https://www.stadt-koeln.de/externe-dienste/open-data/events-od.php?&kat=[CATEGORYID]&ndays=365 and add our matching category id
- [ ] Format all fetched events fitting our event structure and add isFetchedEvent=true key/value
- [ ] Get all events with isFetchedEvent=true from our database, filter for events comparing the fetched event ID(Link)
  - [ ] That are in our database but not in our fetched array -> Delete them from our database
  - [ ] Use findOneAndUpdate with upsert option to update events and create new ones
- [ ] Update the metaInfo with the current date

useData.js

[ ] When fetching the events always check the MetaInfo lastFetch date and if the date does not equal today call fetchEventsFromApi

EventForm

[ ] Add isFetchedEvent with false value to all events created through our form and events already existing in our database

EVENT Schema