Identifier generating

* refactors identifier generating into BaseObject class

konova/models.py

@@ -9,10 +9,15 @@ import os
 import uuid
 
 from django.contrib.auth.models import User
+from django.utils.timezone import now
 from django.utils.translation import gettext_lazy as _
 from django.contrib.gis.db.models import MultiPolygonField
 from django.db import models, transaction
 
+from compensation.settings import COMPENSATION_IDENTIFIER_TEMPLATE, COMPENSATION_IDENTIFIER_LENGTH, \
+    ECO_ACCOUNT_IDENTIFIER_TEMPLATE, ECO_ACCOUNT_IDENTIFIER_LENGTH
+from intervention.settings import INTERVENTION_IDENTIFIER_LENGTH, INTERVENTION_IDENTIFIER_TEMPLATE
+from konova.utils.generators import generate_random_string
 from user.models import UserActionLogEntry, UserAction
 
 
@@ -118,6 +123,43 @@ class BaseObject(BaseResource):
         else:
             return User.objects.none()
 
+    def _generate_new_identifier(self) -> str:
+        """ Generates a new identifier for the intervention object
+
+        Returns:
+            str
+        """
+        from compensation.models import Compensation, EcoAccount
+        from intervention.models import Intervention
+        definitions = {
+            Intervention: {
+                "length": INTERVENTION_IDENTIFIER_LENGTH,
+                "template": INTERVENTION_IDENTIFIER_TEMPLATE,
+            },
+            Compensation: {
+                "length": COMPENSATION_IDENTIFIER_LENGTH,
+                "template": COMPENSATION_IDENTIFIER_TEMPLATE,
+            },
+            EcoAccount: {
+                "length": ECO_ACCOUNT_IDENTIFIER_LENGTH,
+                "template": ECO_ACCOUNT_IDENTIFIER_TEMPLATE,
+            },
+        }
+
+        if self.__class__ not in definitions:
+            # Not defined, yet. Create fallback identifier for this case
+            return generate_random_string(10)
+
+        _now = now()
+        curr_month = str(_now.month)
+        curr_year = str(_now.year)
+        rand_str = generate_random_string(
+            length=definitions[self.__class__]["length"],
+            only_numbers=True,
+        )
+        _str = "{}{}-{}".format(curr_month, curr_year, rand_str)
+        return definitions[self.__class__]["template"].format(_str)
+
 
 class DeadlineType(models.TextChoices):
     """