Feat: add update_tribe in service

backend/service/services.py

@@ -7,6 +7,10 @@ class TribeExists(Exception):
     pass
 
 
+class TribeDosNotExists(Exception):
+    pass
+
+
 def add_tribe(name: str, level: str, tribe_repo: AbstractRepository, conn):
     tribe = Tribe(name=name, level=level)
     try:
@@ -15,3 +19,13 @@ def add_tribe(name: str, level: str, tribe_repo: AbstractRepository, conn):
         raise TribeExists(f"The tribe {tribe.name} already exists")
     conn.commit()
     return tribe
+
+
+def update_tribe(name: str, level: str, tribe_repo: AbstractRepository, conn):
+    tribe = Tribe(name=name, level=level)
+    try:
+        tribe_repo.update(name=name, tribe=tribe)
+    except TribeRepositoryError:
+        raise TribeDosNotExists(f"The tribe {name} does not exists you can't update it")
+    conn.commit()
+    return tribe