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

namespace NzbDrone.Common.Http
{
    public class HttpRequest
    {
        private readonly Dictionary<string, string> _segments;

        public HttpRequest(string url, HttpAccept httpAccept = null)
        {
            UriBuilder = new UriBuilder(url);
            Headers = new HttpHeader();
            _segments = new Dictionary<string, string>();
            AllowAutoRedirect = true;
            Cookies = new Dictionary<string, string>();

            if (httpAccept != null)
            {
                Headers.Accept = httpAccept.Value;
            }
        }

        public UriBuilder UriBuilder { get; private set; }

        public Uri Url
        {
            get
            {
                var uri = UriBuilder.Uri.ToString();

                foreach (var segment in _segments)
                {
                    uri = uri.Replace(segment.Key, segment.Value);
                }

                return new Uri(uri);
            }
        }

        public HttpMethod Method { get; set; }
        public HttpHeader Headers { get; set; }
        public string Body { get; set; }
        public NetworkCredential NetworkCredential { get; set; }
        public bool SuppressHttpError { get; set; }
        public bool AllowAutoRedirect { get; set; }
        public Dictionary<string, string> Cookies { get; private set; }
        public bool StoreResponseCookie { get; set; }
        public TimeSpan RateLimit { get; set; }

        public override string ToString()
        {
            if (Body == null)
            {
                return string.Format("Req: [{0}] {1}", Method, Url);
            }

            return string.Format("Req: [{0}] {1} {2} {3}", Method, Url, Environment.NewLine, Body);
        }

        public void AddSegment(string segment, string value)
        {
            var key = "{" + segment + "}";

            if (!UriBuilder.Uri.ToString().Contains(key))
            {
                throw new InvalidOperationException("Segment " + key +" is not defined in Uri");
            }

            _segments.Add(key, value);
        }

        public void AddQueryParam(string segment, string value)
        {
            UriBuilder.SetQueryParam(segment, value);
        }

        public void AddCookie(string key, string value)
        {
            Cookies[key] = value;
        }

        public void AddCookie(string cookies)
        {
            foreach (var pair in cookies.Split(';'))
            {
                var split = pair.Split('=');

                Cookies[split[0].Trim()] = split[1].Trim();
            }
        }
    }
}