using Furion.FriendlyException;
using Furion.HttpRemote;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Options;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace FlexJobApi.Core
{
    public class AliyunSmsUtils
    {
        private readonly IOptions<AliyunOptions> options;
        private readonly IHttpRemoteService httpRemoteService;
        private readonly IHttpContextAccessor httpContextAccessor;

        public AliyunSmsUtils(
            IOptions<AliyunOptions> options,
            IHttpRemoteService httpRemoteService,
            IHttpContextAccessor httpContextAccessor)
        {
            this.options = options;
            this.httpRemoteService = httpRemoteService;
            this.httpContextAccessor = httpContextAccessor;
        }

        /// <summary>
        /// 发送短信
        /// </summary>
        /// <param name="phoneNumber">手机号码</param>
        /// <param name="templateCode">模板代码</param>
        /// <param name="templateParam">模板参数</param>
        /// <param name="cancellationToken">取消令牌</param>
        /// <returns></returns>
        /// <exception cref="Oops"></exception>
        //public async Task SendAsync(string phoneNumber, EnumSmsTemplateType templateCode, string templateParam, CancellationToken cancellationToken)
        //{
        //    if (options.Value.Sms?.Enable != true)
        //    {
        //        httpContextAccessor.AddAdditionalData("TemplateParam", templateParam);
        //        return;
        //    }
        //    if (options.Value.Sms != null
        //        && options.Value.Sms.Version.IsNotNull()
        //        && options.Value.Sms.RegionId.IsNotNull()
        //        && options.Value.Sms.SignName.IsNotNull()
        //        && options.Value.AccessKeyId.IsNotNull()
        //        && options.Value.AccessKeySecret.IsNotNull())
        //    {
        //        var _templateCode = options.Value.Sms.TemplateCodes[templateCode.ToString()];
        //        var _params = new Dictionary<string, string>
        //        {
        //            {"Action", "SendSms"},
        //            {"Version", options.Value.Sms.Version},
        //            {"RegionId", options.Value.Sms.RegionId},
        //            {"PhoneNumbers", phoneNumber},
        //            {"SignName", options.Value.Sms.SignName},
        //            {"TemplateCode",  _templateCode}
        //        };
        //        if (!string.IsNullOrWhiteSpace(templateParam))
        //        {
        //            _params.Add("TemplateParam", templateParam);
        //        }
        //        var timestamp = DateTime.Now.ToUniversalTime()
        //            .ToString("yyyy-MM-dd'T'HH:mm:ss'Z'", CultureInfo.CreateSpecificCulture("en-US"));

        //        _params.Add("AccessKeyId", options.Value.AccessKeyId);
        //        _params.Add("Timestamp", timestamp);
        //        _params.Add("Format", "JSON");
        //        _params.Add("SignatureMethod", "HMAC-SHA1");
        //        _params.Add("SignatureVersion", "1.0");
        //        _params.Add("SignatureNonce", Guid.NewGuid().ToString());

        //        //排序
        //        var sortDic = new SortedDictionary<string, string>(_params, StringComparer.Ordinal);

        //        //生成Url参数
        //        var urlParams = "";
        //        foreach (var dic in sortDic)
        //        {
        //            urlParams += $"{PercentEncode(dic.Key)}={PercentEncode(dic.Value)}&";
        //        }
        //        urlParams = urlParams.TrimEnd('&');

        //        //签名
        //        var stringToSign = $"GET&{PercentEncode("/")}&{PercentEncode(urlParams)}";
        //        string signature = PercentEncode(ToHmacsha1(stringToSign, options.Value.AccessKeySecret + "&"));

        //        var req = $"http://dysmsapi.aliyuncs.com/?Signature={signature}&{urlParams}"
        //            .SetMethod(HttpMethod.Get);
        //        var res = await http.SendAsync(req, cancellationToken);
        //        var callback = res.Callback?.JsonTo(new
        //        {
        //            Code = "",
        //            Message = "",
        //            RequestId = "",
        //            BizId = ""
        //        });
        //        if (callback == null || callback.Code != "OK")
        //        {
        //            throw new Oops(FriendlyCallbackCode.Error, "发送短信失败", $"发送短信异常：{callback?.Message}");
        //        }
        //    }
        //}

        /// <summary>
        /// 排除敏感字符串
        /// </summary>
        /// <param name="value">文本</param>
        /// <returns>排除后文本</returns>
        private string PercentEncode(string value)
        {
            var stringBuilder = new StringBuilder();
            var text = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_.~";
            var bytes = Encoding.GetEncoding("UTF-8").GetBytes(value);
            foreach (var b in bytes)
            {
                var c = (char)b;
                if (text.IndexOf(c) >= 0)
                    stringBuilder.Append(c);
                else
                    stringBuilder.Append("%").Append(
                        string.Format(CultureInfo.InvariantCulture, "{0:X2}", (int)c));
            }
            return stringBuilder.ToString();
        }

        /// <summary>
        /// HMAC-SHA1加密
        /// </summary>
        /// <param name="content"></param>
        /// <param name="key"></param>
        /// <returns></returns>
        private static string ToHmacsha1(string content, string key)
        {
            var hmacsha1 = new HMACSHA1(Encoding.UTF8.GetBytes(key));
            var bytes = hmacsha1.ComputeHash(Encoding.UTF8.GetBytes(content));
            return Convert.ToBase64String(bytes);
        }
    }
}