From a7c45fdd0d61d02efb747ded61daba322a671712 Mon Sep 17 00:00:00 2001
From: Evgenii Stratonikov <e.stratonikov@yadro.com>
Date: Thu, 11 Jan 2024 15:36:55 +0300
Subject: [PATCH] [#68] policy: Add Version() method

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
---
 policy/config.yml          | 1 +
 policy/policy_contract.go  | 5 +++++
 rpcclient/policy/client.go | 5 +++++
 3 files changed, 11 insertions(+)

diff --git a/policy/config.yml b/policy/config.yml
index 27ca4bd..94ab0d3 100644
--- a/policy/config.yml
+++ b/policy/config.yml
@@ -4,3 +4,4 @@ safemethods:
   - "listChains"
   - "getChain"
   - "listChainsByPrefix"
+  - "version"
diff --git a/policy/policy_contract.go b/policy/policy_contract.go
index 89b0ae8..f66646b 100644
--- a/policy/policy_contract.go
+++ b/policy/policy_contract.go
@@ -58,6 +58,11 @@ func checkAuthorization(ctx storage.Context) {
 	panic(ErrNotAuthorized)
 }
 
+// Version returns the version of the contract.
+func Version() int {
+	return common.Version
+}
+
 func SetAdmin(addr interop.Hash160) {
 	common.CheckAlphabetWitness()
 
diff --git a/rpcclient/policy/client.go b/rpcclient/policy/client.go
index 9dd9ca6..4174dcb 100644
--- a/rpcclient/policy/client.go
+++ b/rpcclient/policy/client.go
@@ -72,6 +72,11 @@ func (c *ContractReader) ListChainsByPrefix(entity *big.Int, entityName string,
 	return unwrap.Array(c.invoker.Call(c.hash, "listChainsByPrefix", entity, entityName, prefix))
 }
 
+// Version invokes `version` method of contract.
+func (c *ContractReader) Version() (*big.Int, error) {
+	return unwrap.BigInt(c.invoker.Call(c.hash, "version"))
+}
+
 // AddChain creates a transaction invoking `addChain` method of the contract.
 // This transaction is signed and immediately sent to the network.
 // The values returned are its hash, ValidUntilBlock value and error if any.