using Newtonsoft.Json;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Channels;
using YD_WeChatApplet.Api.Services.Interface;
using YD_WeChatApplet.Api.Utilities;
using YD_WeChatApplet.Commons.Dto.JingShiTiJiao;
using YD_WeChatApplet.Commons.Utils;

namespace YD_WeChatApplet.Api.Services.Impl
{
    /// <summary>
    /// 京师体教接口服务
    /// </summary>
    public class JingShiTiJiaoService : IJingShiTiJiaoService
    {
        /// <summary>
        /// 根据教师获取教师年级班级信息
        /// </summary>
        /// <returns></returns>
        public async Task<TeacherClassData> GetClassListByTeacher(string teacherNo)
        {
            var res = new TeacherClassData();

            long timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
            string nonce = SaTokenSignHelper.RandomString(20);

            // 1. 签名参数
            var paramMap = new Dictionary<string, object>
            {
                { "channel", AppSettings.JingShiTiJiao.Channel },
                { "teacherNo", teacherNo },
                { "timestamp", timestamp },
                { "nonce", nonce }
            };

            // 4. 构建签名 QueryString
            string queryStr = SaTokenSignHelper.BuildQueryString(paramMap, AppSettings.JingShiTiJiao.SecretKey);

            // 5. 拼接最终 URL
            string url = $"{AppSettings.JingShiTiJiao.BaseUrl}/api/open/class/by/teacher?{queryStr}";

            string json = await HttpManager.HttpGetAsync(url);

            if (string.IsNullOrWhiteSpace(json))
                return res;

            var data = JsonConvert.DeserializeObject<JingShiResponse<TeacherClassData>>(json);
            if (data != null && data.Code == 0)
            {
                return data.Data;
            }

            return res;
        }

        /// <summary>
        /// 根据班级编号获取学生列表
        /// </summary>
        /// <param name="classNo"></param>
        /// <returns></returns>
        /// <exception cref="NotImplementedException"></exception>
        public async Task<List<StudentDto>> GetStuListByClass(string classNo)
        {
            var res = new List<StudentDto>();

            long timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
            string nonce = SaTokenSignHelper.RandomString(20);

            // 1. 签名参数
            var paramMap = new Dictionary<string, object>
            {
                { "channel", AppSettings.JingShiTiJiao.Channel },
                { "classNo", classNo },
                { "timestamp", timestamp },
                { "nonce", nonce }
            };

            // 4. 构建签名 QueryString
            string queryStr = SaTokenSignHelper.BuildQueryString(paramMap, AppSettings.JingShiTiJiao.SecretKey);

            // 5. 拼接最终 URL
            string url = $"{AppSettings.JingShiTiJiao.BaseUrl}/api/open/stu/by/class?{queryStr}";

            string json = await HttpManager.HttpGetAsync(url);

            if (string.IsNullOrWhiteSpace(json))
                return res;

            var data = JsonConvert.DeserializeObject<JingShiResponse<List<StudentDto>>>(json);
            if (data != null && data.Code == 0)
            {
                return data.Data;
            }

            return res;
        }

        /// <summary>
        /// 根据学生编号获取学生详情
        /// </summary>
        /// <param name="stuNo"></param>
        /// <returns></returns>
        public async Task<StudentDetailDto> GetStudentInfo(string stuNo)
        {
            var res = new StudentDetailDto();

            long timestamp = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
            string nonce = SaTokenSignHelper.RandomString(20);

            // 1. 签名参数
            var paramMap = new Dictionary<string, object>
            {
                { "channel", AppSettings.JingShiTiJiao.Channel },
                { "stuNo", stuNo },
                { "timestamp", timestamp },
                { "nonce", nonce }
            };

            // 4. 构建签名 QueryString
            string queryStr = SaTokenSignHelper.BuildQueryString(paramMap, AppSettings.JingShiTiJiao.SecretKey);

            // 5. 拼接最终 URL
            string url = $"{AppSettings.JingShiTiJiao.BaseUrl}/api/open/stu/info?{queryStr}";

            string json = await HttpManager.HttpGetAsync(url);

            if (string.IsNullOrWhiteSpace(json))
                return res;

            var data = JsonConvert.DeserializeObject<JingShiResponse<StudentDetailDto>>(json);
            if (data != null && data.Code == 0)
            {
                return data.Data;
            }

            return res;
        }
    }
}