Feat: add add_student to service

backend/service/services.py

@@ -1,5 +1,7 @@
+from backend.model.student import Student
 from backend.model.tribe import Tribe
 from backend.repository.abstract_repository import AbstractRepository
+from backend.repository.student_sqlite_repository import StudentRepositoryError
 from backend.repository.tribe_sqlite_repository import TribeRepositoryError
 
 
@@ -7,7 +9,15 @@ class TribeExists(Exception):
     pass
 
 
-class TribeDosNotExists(Exception):
+class TribeDoesNotExist(Exception):
+    pass
+
+
+class StudentExists(Exception):
+    pass
+
+
+class StudentDoesExist(Exception):
     pass
 
 
@@ -26,7 +36,7 @@ def update_tribe(name: str, level: str, tribe_repo: AbstractRepository, conn) ->
     try:
         tribe_repo.update(name=name, tribe=tribe)
     except TribeRepositoryError:
-        raise TribeDosNotExists(f"The tribe {name} does not exists you can't update it")
+        raise TribeDoesNotExist(f"The tribe {name} does not exists you can't update it")
     conn.commit()
     return tribe
 
@@ -35,6 +45,32 @@ def delete_tribe(name: str, tribe_repo: AbstractRepository, conn) -> None:
     try:
         tribe_repo.delete(name=name)
     except TribeRepositoryError:
-        raise TribeDosNotExists(f"The tribe {name} does not exists you can't delete it")
+        raise TribeDoesNotExist(f"The tribe {name} does not exists you can't delete it")
 
     conn.commit()
+
+
+def add_student(
+    name: str,
+    tribe: str,
+    student_repo: AbstractRepository,
+    tribe_repo: AbstractRepository,
+    conn,
+) -> Student:
+
+    try:
+        _tribe = tribe_repo.get(tribe)
+    except TribeRepositoryError:
+        raise TribeDoesNotExist(
+            f"The tribe {tribe} does not exists. Can't add a student in it"
+        )
+
+    student = Student(name=name, tribe=_tribe)
+
+    try:
+        student_repo.add(student)
+    except StudentRepositoryError:
+        raise StudentExists(f"The student {student.name} already exists. Can't add it.")
+
+    conn.commit()
+    return student