feat: langchain integration

src/langchain/index.ts

@@ -390,6 +390,93 @@ export class SolanaRegisterDomainTool extends Tool {
   }
 }
 
+export class SolanaResolveDomainTool extends Tool {
+  name = "solana_resolve_domain";
+  description = `Resolve a .sol domain to a Solana PublicKey.
+
+  Inputs:
+  domain: string, eg "pumpfun.sol" or "pumpfun"(required)
+  `;
+
+  constructor(private solanaKit: SolanaAgentKit) {
+    super();
+  }
+
+  private validateInput(input: any): void {
+    if (!input.domain || typeof input.domain !== "string") {
+      throw new Error("domain is required and must be a string");
+    }
+  }
+
+  protected async _call(input: string): Promise<string> {
+    try {
+      const parsedInput = JSON.parse(input);
+      this.validateInput(parsedInput);
+
+      const publicKey = await this.solanaKit.resolveSolDomain(parsedInput.domain);
+
+      return JSON.stringify({
+        status: "success",
+        message: "Domain resolved successfully",
+        publicKey: publicKey.toBase58(),
+      });
+    } catch (error: any) {
+      return JSON.stringify({
+        status: "error",
+        message: error.message,
+        code: error.code || "UNKNOWN_ERROR",
+      });
+    }
+  }
+}
+
+
+export class SolanaGetPrimaryDomainTool extends Tool {
+  name = "solana_get_primary_domain";
+  description = `Retrieve the primary .sol domain associated with a given Solana public key.
+
+  Inputs:
+  account: string, eg "4Be9CvxqHW6BYiRAxW9Q3xu1ycTMWaL5z8NX4HR3ha7t" (required)
+  `;
+
+  constructor(private solanaKit: SolanaAgentKit) {
+    super();
+  }
+
+  private validateInput(input: any): void {
+    if (!input.account || typeof input.account !== "string") {
+      throw new Error("account is required and must be a string");
+    }
+    try { 
+      new PublicKey(input.account);
+    } catch { 
+      throw new Error("account is not a valid public key");
+    }
+  }
+
+  protected async _call(input: string): Promise<string> {
+    try {
+      const parsedInput = JSON.parse(input);
+      this.validateInput(parsedInput);
+
+      const account = new PublicKey(parsedInput.account);
+      const domain = await this.solanaKit.getPrimaryDomain(account);
+
+      return JSON.stringify({
+        status: "success",
+        message: "Primary domain retrieved successfully",
+        domain,
+      });
+    } catch (error: any) {
+      return JSON.stringify({
+        status: "error",
+        message: error.message,
+        code: error.code || "UNKNOWN_ERROR",
+      });
+    }
+  }
+}
+
 export class SolanaGetWalletAddressTool extends Tool {
   name = "solana_get_wallet_address";
   description = `Get the wallet address of the agent`;