export abstract class BaseHttpClient {
  protected baseUrl: string;

  constructor() {
    this.baseUrl = process.env.NEXT_PUBLIC_API_URL || "/api/";
  }

  protected async request<T>(
    endpoint: string,
    options: RequestInit = {}
  ): Promise<T> {
    const url = `${this.baseUrl}${endpoint}`;

    const defaultOptions: RequestInit = {
      credentials: "same-origin",
      headers: {
        "Content-Type": "application/json",
        ...options.headers,
      },
      ...options,
    };

    try {
      const response = await fetch(url, defaultOptions);

      if (!response.ok) {
        throw new Error(`HTTP ${response.status}: ${response.statusText}`);
      }

      // Handle empty responses
      if (
        response.status === 204 ||
        response.headers.get("content-length") === "0"
      ) {
        return {} as T;
      }

      return await response.json();
    } catch (error) {
      console.error(`Request failed for ${endpoint}:`, error);
      throw error;
    }
  }

  protected async get<T>(endpoint: string): Promise<T> {
    return this.request<T>(endpoint);
  }

  protected async post<T>(endpoint: string, data?: any): Promise<T> {
    return this.request<T>(endpoint, {
      method: "POST",
      body: data ? JSON.stringify(data) : undefined,
    });
  }

  protected async put<T>(endpoint: string, data?: any): Promise<T> {
    return this.request<T>(endpoint, {
      method: "PUT",
      body: data ? JSON.stringify(data) : undefined,
    });
  }

  protected async delete<T>(endpoint: string, data?: any): Promise<T> {
    return this.request<T>(endpoint, {
      method: "DELETE",
      body: data ? JSON.stringify(data) : undefined,
    });
  }
}