From 0c8a7ad8502af30a81a523cfd452817c840ab66d Mon Sep 17 00:00:00 2001
From: Edgars <edgars@entropicsolutions.io>
Date: Tue, 7 Jul 2026 23:27:10 +0100
Subject: [PATCH] fix: drop getSlashingAddress from validator-history

getSlashingAddress() was removed from the genlayer-js SDK (v0.39+/v2-dev),
causing `genlayer staking validator-history` to crash with
`client.getSlashingAddress is not a function` before any history is fetched.

Resolve the idleness (slashing) contract address dynamically via viem
readContract against consensusMainContract.getIdlenessAddress(), falling
back to the staking contract address if resolution fails so reward events
still display.

Port of #344 (by @ygd58) from the dead v0.39 line to v0.40-dev.
Supersedes #344.

Fixes #341
---
 src/commands/staking/validatorHistory.ts | 32 ++++++++++++++++++++++--
 1 file changed, 30 insertions(+), 2 deletions(-)

diff --git a/src/commands/staking/validatorHistory.ts b/src/commands/staking/validatorHistory.ts
index 071ad84c..6858daf5 100644
--- a/src/commands/staking/validatorHistory.ts
+++ b/src/commands/staking/validatorHistory.ts
@@ -1,6 +1,6 @@
 import {StakingAction, StakingConfig, BUILT_IN_NETWORKS} from "./StakingAction";
 import type {Address, GenLayerChain} from "genlayer-js/types";
-import {createPublicClient, http} from "viem";
+import {createPublicClient, http, getContract} from "viem";
 import Table from "cli-table3";
 import chalk from "chalk";
 
@@ -104,7 +104,35 @@ export class ValidatorHistoryAction extends StakingAction {
 
       // Get addresses
       const stakingAddress = client.getStakingContract().address;
-      const slashingAddress = await client.getSlashingAddress();
+
+      // getSlashingAddress() was removed in SDK v0.39+.
+      // Read idleness contract address from AddressManager via viem.
+      const ADDRESS_MANAGER_ABI = [{
+        type: "function",
+        name: "getIdlenessAddress",
+        stateMutability: "view",
+        inputs: [],
+        outputs: [{ name: "", type: "address" }],
+      }] as const;
+
+      // Fallback: use staking address if idleness address cannot be resolved
+      let slashingAddress: string = stakingAddress;
+      try {
+        const tempClient = createPublicClient({
+          chain,
+          transport: http(chain.rpcUrls.default.http[0]),
+        });
+        const consensusAddress = chain.consensusMainContract?.address as `0x${string}` | undefined;
+        if (consensusAddress) {
+          slashingAddress = await tempClient.readContract({
+            address: consensusAddress,
+            abi: ADDRESS_MANAGER_ABI,
+            functionName: "getIdlenessAddress",
+          }) as string;
+        }
+      } catch (_) {
+        // If resolution fails, slash events won't be fetched but reward events will still work
+      }
 
       // Create public client for log fetching
       const publicClient = createPublicClient({