using System;
using System.Linq;
using System.Web.Http;
using System.Web.Http.Results;
using EShang.Common.Model;
using HZQR.Common;
using Newtonsoft.Json;

namespace EShangApiMain.Controllers
{
    /// <summary>
    /// 基础接口
    /// </summary>
    public class BaseController : ApiController
    {
        /// <summary>
        /// 事务管理器
        /// </summary>
        public SuperMap.RealEstate.ServiceModel.Transaction transaction = new SuperMap.RealEstate.ServiceModel.Transaction();

        /// <summary>
        /// 重写返回方法(用于释放事物)
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="content"></param>
        /// <returns></returns>
        protected override OkNegotiatedContentResult<T> Ok<T>(T content)
        {
            if (transaction.IsOpen)
            {
                transaction.Commit();
            }
            transaction.Release();
            transaction.Dispose();
            return base.Ok(content);
        }

        /// <summary>
        /// 获取int类型的header参数
        /// </summary>
        /// <param name="name">参数名称</param>
        /// <param name="value">参数值</param>
        /// <returns></returns>
        public int? GetIntHeader(string name, int? value)
        {
            //从header获取ProvinceCode的值
            if (value == null && Request.Headers.Contains(name))
            {
                string[] Headervalue = (string[])Request.Headers.GetValues(name);
                if (Headervalue.Length > 0 && Headervalue[0].ToString() != "")
                {
                    value = Headervalue[0].TryParseToInt();
                }
            }

            return value;
        }

        /// <summary>
        /// 获取string类型的header参数
        /// </summary>
        /// <param name="name">参数名称</param>
        /// <param name="value">参数值</param>
        /// <returns></returns>
        public string GetStringHeader(string name, string value)
        {
            //从header获取ProvinceCode的值
            if (string.IsNullOrWhiteSpace(value) && Request.Headers.Contains(name))
            {
                string[] Headervalue = (string[])Request.Headers.GetValues(name);
                if (Headervalue.Length > 0 && Headervalue[0].ToString() != "")
                {
                    value = Headervalue[0];
                }
            }

            return value;
        }

        /// <summary>
        /// 获取请求头对象
        /// </summary>
        /// <returns></returns>
        protected HeaderModel GetHeaderModel()
        {
            var header = new HeaderModel
            {
                Userpattern = GetIntHeader("Userpattern", null),
                Serverpartcodes = GetStringHeader("Serverpartcodes", ""),
                Provincecode = GetStringHeader("Provincecode", ""),
                Serverpartshopids = GetStringHeader("Serverpartshopids", ""),
                Token = JsonConvert.DeserializeObject<AccessToken>(GetStringHeader("Token", "").ToDecrypt())
            };
            if (!header.Userpattern.HasValue)
            {
                throw new Exception("数据模式不能为空");
            }
            if (header.Token == null)
            {
                throw new Exception("Token不能为空");
            }
            if (!header.Token.UserID.HasValue)
            {
                throw new Exception("Token中缺少用户信息");
            }
            return header;
        }

        /// <summary>
        /// 接口请求用户信息
        /// </summary>
        /// <returns></returns>
        protected AccessToken GetAccessToken()
        {
            var token = GetStringHeader("Token", "");
            var userInfo = JsonConvert.DeserializeObject<AccessToken>(token.ToDecrypt());//已解码，直接返回用户信息
            return userInfo == null ? new AccessToken() : userInfo;
        }
    }
}