feat: added business models, implemented business signup and signin

solution/apps/business/models.py

@@ -0,0 +1,37 @@
+import jwt
+from django.conf import settings
+from django.core.validators import MinLengthValidator, RegexValidator
+from django.db import models
+
+from apps.core.models import BaseModel
+
+
+class Business(BaseModel):
+    name = models.CharField(max_length=50, validators=[MinLengthValidator(5)])
+    email = models.EmailField(
+        unique=True,
+        max_length=120,
+        validators=[MinLengthValidator(8)],
+    )
+    password = models.CharField(
+        max_length=60,
+        validators=[
+            RegexValidator(
+                r"^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$"
+            ),
+        ],
+    )
+    token_version = models.BigIntegerField(default=0)
+
+    def __str__(self) -> str:
+        return self.name
+
+    def generate_token(self) -> str:
+        return jwt.encode(
+            {
+                "business_id": str(self.id),
+                "token_version": self.token_version,
+            },
+            settings.SECRET_KEY,
+            algorithm="HS256",
+        )