using AmrControl.Common.HttpClients;
using Newtonsoft.Json;
using Newtonsoft.Json.Converters;
using System.Collections;

namespace AmrControl.Common.HttpClients
{
    public abstract class BaseHttpClient : IHttpRequest
    {
        /// <summary>
        /// httpclient
        /// </summary>
        protected readonly HttpClient _httpClient;
        /// <summary>
        /// 根路径
        /// </summary>
        protected readonly string baseUri;

        public BaseHttpClient(HttpClient httpClient, string baseUri)
        {
            _httpClient = httpClient;
            this.baseUri = baseUri;
        }

        public HttpRespResult sendRequest<T>(string url, T data)
        {
            return sendRequest(url, new(), data);
        }

        public HttpRespResult sendRequest<T>(string url, Dictionary<string, string> headers, T data)
        {
            var response = _httpClient.SendAsync(createRequest(reHandleUrl(url, data), headers, getMethod(), handleData(data))).Result;
            var rs = response.Content.ReadAsStringAsync().Result;
            return handleResult(response, rs);
        }
        /// <summary>
        /// 处理数据
        /// </summary>
        /// <param name="data"></param>
        /// <returns></returns>
        protected abstract HttpContent? handleData<T>(T data);

        /// <summary>
        /// 当前请求类型
        /// </summary>
        /// <returns></returns>
        protected abstract HttpMethod getMethod();

        /// <summary>
        /// 处理url,针对get等部分请求可能需要将参数放在url后面，此处做处理
        /// </summary>
        /// <param name="url"></param>
        /// <param name="data"></param>
        /// <returns></returns>
        protected virtual string reHandleUrl<T>(string url, T data)
        {
            if (baseUri.EndsWith("/"))
            {
                if (url.StartsWith("/"))
                {
                    url = url[1..];
                }
                return baseUri + url;
            }
            else
            {
                if (url.StartsWith("/"))
                {
                    return baseUri + url;
                }
                else
                {
                    return baseUri + "/" + url;
                }
            }
        }

        /// <summary>
        /// 创建请求对象
        /// </summary>
        /// <param name="url"></param>
        /// <param name="headers"></param>
        /// <param name="method"></param>
        /// <param name="content"></param>
        /// <returns></returns>
        protected HttpRequestMessage createRequest(string url, Dictionary<string, string> headers, HttpMethod method, HttpContent? content)
        {
            var request = new HttpRequestMessage
            {
                Method = method,
                RequestUri = new Uri(url),
                Content = content
            };
            foreach (var head in headers)
            {
                request.Headers.Add(head.Key, head.Value);
            }
            return request;
        }
        /// <summary>
        /// 解析结果
        /// </summary>
        /// <param name="response"></param>
        /// <param name="rs"></param>
        /// <returns></returns>
        protected HttpRespResult handleResult(HttpResponseMessage response, string rs)
        {
            return new HttpRespResult()
            {
                code = response.IsSuccessStatusCode ? 200 : -1,
                message = response.IsSuccessStatusCode ? "发送成功" : rs,
                data = rs
            };
        }
        /// <summary>
        /// 类型转换
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="data"></param>
        /// <returns></returns>
        protected Dictionary<string, string> convertObj2Dict<T>(T data)
        {
            Dictionary<string, string> dict = new Dictionary<string, string>();
            if (data != null)
            {
                if (data is Dictionary<string, string>)
                {
                    //若对象本身即是dictionary则直接返回
                    return data as Dictionary<string, string>;
                }
                else if (data is IEnumerable || data.GetType().IsArray)
                {
                    throw new Exception("不支持的转换类型");
                }
                else
                {
                    return JsonConvert.DeserializeObject<Dictionary<string, string>>(JsonConvert.SerializeObject(data, new IsoDateTimeConverter() { DateTimeFormat = "yyyy-MM-dd HH:mm:ss" }));
                }
            }
            return dict;
        }
    }
}