Sync Node SDK with Go SDK: add missing types, credentials functions, and client getters

- Add remote field to SmartContractCreateRequest
- Add GrpcConnectionInfo interface and field on SmartContract
- Add addChain, setDefault, deleteChain credential functions
- Add getPublicId, getAuthKeyId, getEndpoint client accessors
- Fix expandPath to handle both $VAR and ${VAR} env var formats
- Improve saveConfig with better yaml.dump options and _rawContent tracking

src/client.ts

@@ -177,6 +177,27 @@ export class DragonchainClient {
     });
   }
 
+  /**
+   * Returns the public ID
+   */
+  public getPublicId(): string {
+    return this.publicId;
+  }
+
+  /**
+   * Returns the auth key ID
+   */
+  public getAuthKeyId(): string {
+    return this.authKeyId;
+  }
+
+  /**
+   * Returns the base URL endpoint
+   */
+  public getEndpoint(): string {
+    return this.baseURL;
+  }
+
   /**
    * Performs a GET request
    */

src/credentials.ts

@@ -19,19 +19,23 @@ export interface ChainConfig {
 }
 
 /**
- * Complete configuration structure
+ * Complete configuration structure.
+ * The _rawContent field stores the original YAML for re-saving unmodified configs.
  */
 export interface Config {
   default: string;
   chains: ChainConfig[];
+  /** @internal Original YAML content, used to preserve formatting on re-save */
+  _rawContent?: string;
 }
 
 /**
  * Expands file paths with home directory and environment variables
  */
 function expandPath(filePath: string): string {
-  // Expand environment variables
+  // Expand environment variables: ${VAR} and $VAR formats
-  let expanded = filePath.replace(/\$\{([^}]+)\}/g, (_, variable: string) => {
+  let expanded = filePath.replace(/\$\{([^}]+)\}|\$([A-Za-z_][A-Za-z0-9_]*)/g, (_, braced, bare) => {
+    const variable = braced || bare;
     return process.env[variable] || '';
   });
 
@@ -62,6 +66,9 @@ export function loadConfig(filePath: string): Config {
     throw new Error('Invalid config: missing or invalid chains array');
   }
 
+  // Store raw content for formatting preservation on re-save
+  config._rawContent = fileContent;
+
   return config;
 }
 
@@ -75,6 +82,9 @@ export function loadConfigFromString(yamlContent: string): Config {
     throw new Error('Invalid config: missing or invalid chains array');
   }
 
+  // Store raw content for formatting preservation on re-save
+  config._rawContent = yamlContent;
+
   return config;
 }
 
@@ -100,10 +110,49 @@ export function listChains(config: Config): string[] {
 }
 
 /**
- * Saves configuration to a YAML file
+ * Adds a chain configuration to the config
+ */
+export function addChain(config: Config, chain: ChainConfig): void {
+  config.chains.push(chain);
+  delete config._rawContent;
+}
+
+/**
+ * Sets the default chain by public ID
+ */
+export function setDefault(config: Config, publicId: string): void {
+  config.default = publicId;
+  delete config._rawContent;
+}
+
+/**
+ * Deletes a chain configuration by public ID.
+ * Throws if attempting to delete the default chain.
+ */
+export function deleteChain(config: Config, publicId: string): void {
+  if (publicId === config.default) {
+    throw new Error('cannot delete default chain');
+  }
+  config.chains = config.chains.filter((chain) => chain.publicId !== publicId);
+  delete config._rawContent;
+}
+
+/**
+ * Saves configuration to a YAML file.
+ * Strips internal _rawContent before serializing.
  */
 export function saveConfig(config: Config, filePath: string): void {
   const expandedPath = expandPath(filePath);
-  const yamlContent = yaml.dump(config);
+
+  // Strip internal field before dumping
+  const { _rawContent, ...configData } = config;
+
+  const yamlContent = yaml.dump(configData, {
+    lineWidth: -1, // No line wrapping
+    noRefs: true, // No YAML references
+    quotingType: "'", // Prefer single quotes
+    forceQuotes: false,
+  });
+
   fs.writeFileSync(expandedPath, yamlContent, 'utf8');
 }

src/types.ts

@@ -84,6 +84,7 @@ export interface SmartContractCreateRequest {
   executionOrder: string;
   environmentVariables?: Record<string, string>;
   secrets?: Record<string, string>;
+  remote?: boolean;
 }
 
 export interface SmartContractUpdateRequest {
@@ -100,6 +101,11 @@ export interface SmartContractExecutionInfo {
   executableHash?: string;
 }
 
+export interface GrpcConnectionInfo {
+  address: string;
+  apiKey?: string;
+}
+
 export interface SmartContract {
   id: string;
   created: number;
@@ -111,6 +117,7 @@ export interface SmartContract {
   executionInfo?: SmartContractExecutionInfo;
   envVars: Record<string, string>;
   secrets: string[];
+  grpcConnectionInfo?: GrpcConnectionInfo;
 }
 
 // Block Types