import axios, { AxiosInstance, AxiosRequestConfig } from 'axios';
import { ApiResponse } from '@stock-bot/types';

/**
 * Base API client that all service clients extend
 */
export abstract class BaseApiClient {
  protected client: AxiosInstance;
  
  constructor(baseURL: string, config?: AxiosRequestConfig) {
    this.client = axios.create({
      baseURL,
      timeout: 10000, // 10 seconds timeout
      ...config
    });
    
    // Add response interceptor for consistent error handling
    this.client.interceptors.response.use(
      (response) => response.data,
      (error) => {
        // Format error for consistent error handling
        const formattedError = {
          status: error.response?.status || 500,
          message: error.response?.data?.error || error.message || 'Unknown error',
          originalError: error
        };
        
        return Promise.reject(formattedError);
      }
    );
  }
  
  /**
   * Get the health status of a service
   */
  async getHealth(): Promise<ApiResponse<{ status: string }>> {
    return this.client.get('/api/health');
  }
}