Refactor error handling, client, and tests for Ollama integration

src/types.ts

@@ -1,26 +1,186 @@
 // src/types.ts
 
-export interface OllamaMessage {
-  role: 'system' | 'user' | 'assistant';
-  content: string;
+// ============================================================
+// Error Type Hierarchy
+// ============================================================
+
+export enum ErrorType {
+  NETWORK_ERROR = 'network_error',
+  API_ERROR = 'api_error',
+  VALIDATION_ERROR = 'validation_error',
+  STREAMING_ERROR = 'streaming_error',
+  TOOL_EXECUTION_ERROR = 'tool_execution_error',
+  PATH_VALIDATION_ERROR = 'path_validation_error',
+  UNKNOWN_ERROR = 'unknown_error',
 }
 
+export class OllamaError extends Error {
+  public readonly type: ErrorType;
+
+  constructor(message: string, type: ErrorType) {
+    super(message);
+    this.type = type;
+    Object.setPrototypeOf(this, OllamaError.prototype);
+  }
+}
+
+export class NetworkError extends OllamaError {
+  public readonly statusCode?: number;
+
+  constructor(message: string, statusCode?: number) {
+    super(message, ErrorType.NETWORK_ERROR);
+    this.statusCode = statusCode;
+    Object.setPrototypeOf(this, NetworkError.prototype);
+  }
+}
+
+export class ApiError extends OllamaError {
+  public readonly statusCode?: number;
+
+  constructor(message: string, statusCode?: number) {
+    super(message, ErrorType.API_ERROR);
+    this.statusCode = statusCode;
+    Object.setPrototypeOf(this, ApiError.prototype);
+  }
+}
+
+export interface ValidationFieldDetails {
+  field?: string;
+  message?: string;
+}
+
+export class ValidationError extends OllamaError {
+  public readonly details?: ValidationFieldDetails;
+
+  constructor(message: string, details?: ValidationFieldDetails) {
+    super(message, ErrorType.VALIDATION_ERROR);
+    this.details = details;
+    Object.setPrototypeOf(this, ValidationError.prototype);
+  }
+}
+
+export class StreamingError extends OllamaError {
+  constructor(message: string) {
+    super(message, ErrorType.STREAMING_ERROR);
+    Object.setPrototypeOf(this, StreamingError.prototype);
+  }
+}
+
+export class ToolExecutionError extends OllamaError {
+  public readonly toolName: string;
+
+  constructor(message: string, toolName: string) {
+    super(message, ErrorType.TOOL_EXECUTION_ERROR);
+    this.toolName = toolName;
+    Object.setPrototypeOf(this, ToolExecutionError.prototype);
+  }
+}
+
+export class PathValidationError extends OllamaError {
+  public readonly path: string;
+
+  constructor(message: string, path: string) {
+    super(message, ErrorType.PATH_VALIDATION_ERROR);
+    this.path = path;
+    Object.setPrototypeOf(this, PathValidationError.prototype);
+  }
+}
+
+// ============================================================
+// Plugin Configuration
+// ============================================================
+
+export interface PluginSettings {
+  ollamaUrl: string;
+  model: string;
+  vaultSearchLimit: number;
+  maxMessageHistory: number;
+  lastIndexTime: number;
+}
+
+export const DEFAULT_SETTINGS: PluginSettings = {
+  ollamaUrl: 'http://localhost:11434',
+  model: 'llama3',
+  vaultSearchLimit: 3,
+  maxMessageHistory: 50,
+  lastIndexTime: 0,
+};
+
+// ============================================================
+// Ollama Protocol Types
+// ============================================================
+
+export interface OllamaTool {
+  type: 'function';
+  function: {
+    name: string;
+    description: string;
+    parameters: {
+      type: 'object';
+      properties: Record<string, unknown>;
+      required: string[];
+    };
+  };
+}
+
+export interface OllamaToolCall {
+  id: string;
+  type: 'function';
+  function: {
+    name: string;
+    arguments: string | Record<string, unknown>;
+  };
+}
+
+export interface OllamaMessage {
+  role: 'system' | 'user' | 'assistant' | 'tool';
+  content: string;
+  tool_calls?: OllamaToolCall[];
+}
+
+// ============================================================
+// Tool Execution Types
+// ============================================================
+
 export interface ToolCall {
-  tool_name: string;
-  arguments: Record<string, unknown>;
+  id: string;
+  type: 'function';
+  function: {
+    name: string;
+    arguments: string | Record<string, unknown>;
+  };
 }
 
-export interface ModelConfig {
-  model: string;
-  url: string;
-}
-
-export enum RequestType {
-  Chat = 'chat',
-  Tool = 'tool',
+export interface ToolResult {
+  success: boolean;
+  message: string;
 }
 
 export interface ExecutionResult {
   success: boolean;
   output: string;
 }
+
+// ============================================================
+// Chat Message Types
+// ============================================================
+
+export interface ChatMessage {
+  id: string;
+  role: 'user' | 'assistant';
+  content: string;
+  timestamp: number;
+  isStreaming?: boolean;
+  tool_calls?: ToolCall[];
+}
+
+// ============================================================
+// Vault Index Types
+// ============================================================
+
+export interface VaultIndexEntry {
+  path: string;
+  title: string;
+  content: string;
+  score: number;
+}