docs: start of api reference file

affluences-api/API.md

@@ -1,3 +1,45 @@
+# Affluences API Reference
+
+## Terminology
+
+* `site`
+    * General name for a location/institution
+    * Defined by a UUID and a slug, e.g. `ghent-university`
+    * Can contain one more or more sites, e.g.
+      `ghent-university-library-book-tower` is a child of `ghent-university`
+
+## Notes
+
+The API checks for browser user agents, so your requests should include a valid
+user agent of a modern browser.
+
+## API Routes
+
+### Search for sites
+
+`GET https://api.affluences.com/app/v3/sites`
+
+**Body format**
+
+```json
+{
+  "selected_categories": [
+    1
+  ],
+  "page": 0,
+  "search_query": "university of ghent"
+}
+```
+
+**Response format**
+
+`Data<Vec<SiteData>>`
+
+### Retrieve time table for a given site
+
+`GET https://reservation.affluences.com/api/sites/4737e57a-ee05-4f7b-901a-7bb541eeb297`
+
+
 curl -L 'https://api.affluences.com/app/v3/sites/ghent-university' -H 'User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/112.0'
 
 returnt lijst van alle bibliotheken op ugent, inclusief de uuids die dan nodig zijn om de specifieke requests te sturen naar die bib zijn stuff