Add getTokenAccounts Method (#75)

src/RpcClient.ts

@@ -398,4 +398,29 @@ export class RpcClient {
       throw new Error(`Error in getSignaturesForAsset: ${error}`);
     }
   }
+
+  /**
+   * Get information about all token accounts for a specific mint or a specific owner
+   * @returns {Promise<DAS.GetTokenAccountsResponse>}
+   * @throws {Error}
+   */
+  async getTokenAccounts(
+    params: DAS.GetTokenAccountsRequest
+  ): Promise<DAS.GetTokenAccountsResponse> {
+    try {
+      const url = `${this.connection.rpcEndpoint}`;
+      const response = await axios.post(url, {
+        jsonrpc: "2.0",
+        id: this.id,
+        method: "getTokenAccounts",
+        params: params,
+      }, {
+        headers: { "Content-Type": "application/json" },
+      });
+
+      return response.data.result as DAS.GetTokenAccountsResponse;
+    } catch (error) {
+      throw new Error(`Error in getTokenAccounts: ${error}`)
+    }
+  }
 }

src/types/das-types.ts

@@ -292,5 +292,36 @@ export interface SearchAssetsRequest {
     seq: number;
     leaf_id: number;
   }
+
+  // Get Token Accounts
+  export interface TokenAccounts {
+    address?: string;
+    mint?: string;
+    owner?: string;
+    amount?: number;
+    delegated_amount?: number;
+    frozen?: boolean;
+  }
+
+  export interface GetTokenAccountsRequest {
+    mint?: string;
+    owner?: string;
+    page?: number;
+    limit?: number;
+    cursor?: string;
+    before?: string;
+    after?: string;
+    options?: {
+      showZeroBalance?: boolean;
+    }
+  }
+
+  export interface GetTokenAccountsResponse {
+    total?: number;
+    limit?: number;
+    page?: number;
+    cursor?: string;
+    token_accounts?: TokenAccounts[];
+  }
   // End of DAS
 }