redelegateTool.ts•5.01 kB
import { StructuredTool } from "langchain/tools";
import { z } from "zod";
import { OraichainAgentKit } from "@oraichain/agent-kit";
import { Coin } from "@cosmjs/stargate";
import { makeSignBytes } from "@cosmjs/proto-signing";
export class RedelegateTool extends StructuredTool {
name = "redelegate";
description = `Redelegate tokens from one validator to another on Oraichain.
Inputs (input is an object):
delegatorAddress: string - The address of the delegator
validatorSrcAddress: string - The address of the source validator
validatorDstAddress: string - The address of the destination validator
amount: string - The amount to redelegate in ORAI
publicKey: string - The delegator's public key for signing
`;
schema = z.object({
delegatorAddress: z.string().describe("The address of the delegator"),
validatorSrcAddress: z
.string()
.describe("The address of the source validator"),
validatorDstAddress: z
.string()
.describe("The address of the destination validator"),
amount: z.string().describe("The amount to redelegate in ORAI"),
publicKey: z.string().describe("The delegator's public key for signing"),
});
constructor(private readonly oraichainKit: OraichainAgentKit) {
super();
}
protected async _call(input: z.infer<typeof this.schema>): Promise<string> {
try {
const amount: Coin = {
denom: "orai",
amount: input.amount,
};
const signDoc = await this.oraichainKit.buildSignDoc(
input.delegatorAddress,
input.publicKey,
[
{
typeUrl: "/cosmos.staking.v1beta1.MsgBeginRedelegate",
value: {
delegatorAddress: input.delegatorAddress,
validatorSrcAddress: input.validatorSrcAddress,
validatorDstAddress: input.validatorDstAddress,
amount,
},
},
],
"auto",
""
);
return JSON.stringify({
status: "success",
data: {
signDoc: Buffer.from(makeSignBytes(signDoc)).toString("base64"),
},
});
} catch (error: any) {
return JSON.stringify({
status: "error",
message: error.message,
code: error.code || "UNKNOWN_ERROR",
});
}
}
}
if (import.meta.vitest) {
const { describe, it, expect, vi } = import.meta.vitest;
vi.mock("@cosmjs/proto-signing", () => ({
makeSignBytes: vi.fn().mockReturnValue(new Uint8Array([1, 2, 3])),
}));
describe("RedelegateTool", () => {
const mockBuildSignDoc = vi.fn();
const mockOraichainKit = {
buildSignDoc: mockBuildSignDoc,
} as unknown as OraichainAgentKit;
const tool = new RedelegateTool(mockOraichainKit);
it("should successfully create a redelegation transaction", async () => {
const input = {
delegatorAddress: "orai1...",
validatorSrcAddress: "oraivaloper1...",
validatorDstAddress: "oraivaloper1...",
amount: "1000000",
publicKey: "base64PublicKey",
};
const mockSignDoc = {
/* mock sign doc structure */
};
mockBuildSignDoc.mockResolvedValueOnce(mockSignDoc);
const result = await tool.invoke(input);
const parsedResult = JSON.parse(result);
expect(parsedResult.status).toBe("success");
expect(parsedResult.data.signDoc).toBe("AQID"); // base64 of [1,2,3]
expect(mockBuildSignDoc).toHaveBeenCalledWith(
input.delegatorAddress,
input.publicKey,
[
{
typeUrl: "/cosmos.staking.v1beta1.MsgBeginRedelegate",
value: {
delegatorAddress: input.delegatorAddress,
validatorSrcAddress: input.validatorSrcAddress,
validatorDstAddress: input.validatorDstAddress,
amount: {
denom: "orai",
amount: input.amount,
},
},
},
],
"auto",
""
);
});
it("should handle invalid input", async () => {
const input = {
// Missing required fields
delegatorAddress: "orai1...",
};
try {
await tool.invoke(input);
} catch (error) {
expect(error.message).toContain(
"Received tool input did not match expected schema"
);
}
});
it("should handle buildSignDoc errors", async () => {
const input = {
delegatorAddress: "orai1...",
validatorSrcAddress: "oraivaloper1...",
validatorDstAddress: "oraivaloper1...",
amount: "1000000",
publicKey: "base64PublicKey",
};
const errorMessage = "Failed to build sign doc";
mockBuildSignDoc.mockRejectedValueOnce(new Error(errorMessage));
const result = await tool.invoke(input);
const parsedResult = JSON.parse(result);
expect(parsedResult.status).toBe("error");
expect(parsedResult.message).toBe(errorMessage);
});
});
}