using System.Net;
using System.Text;
using System.Collections.Generic;

namespace UdpClientLib
{
    public abstract class NetworkClientBase
    {
        public string Name { get; set; }
        public IPEndPoint _serverEndPoint;

        // 공통 HTTP 요청 메서드
        public string CreateHttpRequest(HttpRequest request)
        {
            var sb = new StringBuilder();

            sb.AppendLine($"{request.Method} {request.Path} HTTP/1.1");
            sb.AppendLine($"Host: {_serverEndPoint?.Address}:{_serverEndPoint?.Port}");

            var headers = request.Headers ?? new Dictionary<string, string>();

            if (!headers.ContainsKey("Content-Type"))
            {
                headers["Content-Type"] = "application/json;charset=UTF-8";
            }

            if (!headers.ContainsKey("User-Agent"))
            {
                headers["User-Agent"] = $"UdpClient-{Name}/2.0";
            }

            foreach (var (key, value) in headers)
            {
                sb.AppendLine($"{key}: {value}");
            }

            if (request.Method is HttpMethod.POST or HttpMethod.PUT or HttpMethod.PATCH)
            {
                int contentLength = request.Body?.Length ?? 0;
                sb.AppendLine($"Content-Length: {contentLength}");
            }

            sb.AppendLine();

            if (!string.IsNullOrEmpty(request.Body))
            {
                sb.Append(request.Body);
            }

            return sb.ToString();
        }
    }
}