feat: add necessary APIs to facilitate DisableL1ValidatorTx signing

src/serializable/pvm/disableL1ValidatorTx.ts

@@ -42,4 +42,13 @@ export class DisableL1ValidatorTx extends PVMTx {
   getDisableAuth() {
     return this.disableAuth as Input;
   }
+
+  getSigIndices(): number[][] {
+    return [
+      ...this.getInputs().map((input) => {
+        return input.sigIndicies();
+      }),
+      this.getDisableAuth().values(),
+    ].filter((indicies): indicies is number[] => indicies !== undefined);
+  }
 }

src/vms/pvm/api.ts

@@ -1,11 +1,14 @@
+import { PChainOwner } from '../../serializable';
 import { TransferableOutput } from '../../serializable/avax';
 import { Utxo } from '../../serializable/avax/utxo';
 import { getPVMManager } from '../../serializable/pvm/codec';
-import { hexToBuffer } from '../../utils';
+import { hexToBuffer, parse } from '../../utils';
 import type { GetAssetDescriptionResponse } from '../common/apiModels';
 import { AvaxApi } from '../common/avaxApi';
 import { createDimensions } from '../common/fees/dimensions';
 import type {
+  GetL1ValidatorResponse,
+  L1ValidatorDetails,
   FeeConfig,
   FeeConfigResponse,
   FeeState,
@@ -266,4 +269,32 @@ export class PVMApi extends AvaxApi {
       timestamp: resp.timestamp,
     };
   }
+
+  async getL1Validator(validationID: string): Promise<L1ValidatorDetails> {
+    const resp = await this.callRpc<GetL1ValidatorResponse>('getL1Validator', {
+      validationID,
+    });
+
+    const deactivationOwner = PChainOwner.fromNative(
+      resp.deactivationOwner.addresses.map((a) => parse(a)[2]),
+      Number(resp.deactivationOwner.threshold),
+    );
+    const remainingBalanceOwner = PChainOwner.fromNative(
+      resp.remainingBalanceOwner.addresses.map((a) => parse(a)[2]),
+      Number(resp.remainingBalanceOwner.threshold),
+    );
+
+    return {
+      balance: BigInt(resp.balance),
+      nodeID: resp.nodeID,
+      publicKey: resp.publicKey,
+      subnetID: resp.subnetID,
+      weight: BigInt(resp.weight),
+      deactivationOwner,
+      remainingBalanceOwner,
+      startTime: BigInt(resp.startTime),
+      height: BigInt(resp.height),
+      minNonce: BigInt(resp.minNonce),
+    };
+  }
 }

src/vms/pvm/models.ts

@@ -1,3 +1,4 @@
+import type { PChainOwner } from '../../serializable';
 import type { TransferableOutput } from '../../serializable/avax';
 import type { Utxo } from '../../serializable/avax/utxo';
 import type { Dimensions } from '../common/fees/dimensions';
@@ -305,3 +306,37 @@ export interface FeeState {
   /** ISO8601 DateTime */
   timestamp: string;
 }
+
+export interface GetL1ValidatorResponse {
+  subnetID: string;
+  nodeID: string;
+  publicKey: string;
+  remainingBalanceOwner: {
+    addresses: string[];
+    locktime: string;
+    threshold: string;
+  };
+  deactivationOwner: {
+    addresses: string[];
+    locktime: string;
+    threshold: string;
+  };
+  startTime: string;
+  weight: string;
+  minNonce: string;
+  balance: string;
+  height: string;
+}
+
+export interface L1ValidatorDetails {
+  subnetID: string;
+  nodeID: string;
+  publicKey: string;
+  remainingBalanceOwner: PChainOwner;
+  deactivationOwner: PChainOwner;
+  weight: bigint;
+  balance: bigint;
+  startTime: bigint;
+  minNonce: bigint;
+  height: bigint;
+}