Create CarbonCreditContract.py

sidra_chain_integration/contracts/CarbonCreditContract.py

@@ -0,0 +1,43 @@
+from typing import Dict
+
+class CarbonCreditContract:
+    def __init__(self):
+        self.credit_owners: Dict[str, int] = {}
+        self.credit_registry: Dict[str, Dict[str, str]] = {}
+
+    def mint_credit(self, owner: str, amount: int, project_id: str):
+        # Mint a new carbon credit
+        self.credit_owners[owner] = self.credit_owners.get(owner, 0) + amount
+        credit_id = f"CC-{len(self.credit_registry) + 1}"
+        self.credit_registry[credit_id] = {
+            "owner": owner,
+            "amount": amount,
+            "project_id": project_id
+        }
+
+    def transfer_credit(self, from_owner: str, to_owner: str, credit_id: str):
+        # Transfer a carbon credit from one owner to another
+        if credit_id not in self.credit_registry:
+            raise ValueError("Credit not found")
+        if self.credit_registry[credit_id]["owner"] != from_owner:
+            raise ValueError("Credit owner mismatch")
+        self.credit_registry[credit_id]["owner"] = to_owner
+        self.credit_owners[from_owner] -= self.credit_registry[credit_id]["amount"]
+        self.credit_owners[to_owner] = self.credit_owners.get(to_owner, 0) + self.credit_registry[credit_id]["amount"]
+
+    def retire_credit(self, owner: str, credit_id: str):
+        # Retire a carbon credit
+        if credit_id not in self.credit_registry:
+            raise ValueError("Credit not found")
+        if self.credit_registry[credit_id]["owner"] != owner:
+            raise ValueError("Credit owner mismatch")
+        del self.credit_registry[credit_id]
+        self.credit_owners[owner] -= self.credit_registry[credit_id]["amount"]
+
+    def get_credit_balance(self, owner: str):
+        # Get the carbon credit balance of an owner
+        return self.credit_owners.get(owner, 0)
+
+    def get_credit_info(self, credit_id: str):
+        # Get the information of a carbon credit
+        return self.credit_registry.get(credit_id, {})