Added email to student id conversion function.

.gitignore

@@ -1,3 +1,4 @@
 __pycache__
 *~
 /venv/
+.idea/

covscraper/aulaapi.py

@@ -0,0 +1,35 @@
+import sys
+
+from requests import Session
+
+from covscraper.auth import Authenticator
+
+
+def email_to_id(session: Session, student_email: str):
+    # Nuke @uni. in case it got copied in
+    student_email = student_email.replace("@uni.", "@")
+
+    # Grab internal aula id for student first
+    response = session.get(
+        "https://apiv2.coventry.aula.education/search/v2/users/{}".format(
+            student_email
+        ),
+    )
+
+    aula_id = None
+    for i in response.json()["users"]:
+        if i["email"] == student_email:
+            aula_id = i["id"]
+            break
+
+    # Grab student object and extract corresponding student ID
+    data = {"userIds": [aula_id]}
+    return session.post(
+        "https://apiv2.coventry.aula.education/users/getByIds",
+        json=data,
+    ).json()["users"][0]["custom"]["studentId"]
+
+
+if __name__ == "__main__":
+    auth = Authenticator(sys.argv[1], sys.argv[2])
+    print(email_to_id(auth, sys.argv[3]))