using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;

using System.Threading.Tasks;


namespace TaskManager.Controllers
{
    public class TOKEN_CONTROLLER 
    {

        private readonly HttpClient _httpClient;
        private readonly string _appKey = "8EG566b9bedd2bf46d";
        private readonly string _appSecret = "48edc4425647425d87f806a1ba492580"; // 若有密钥需传入

        public TOKEN_CONTROLLER()
        {
            _httpClient = new HttpClient();



        }
        public async Task ExecuteAsync()
        {
            try
            {
                var retult = await GetTokenAsync("https://ediuat.mychery.com/prod-api/auth/public/login/appKey");
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }

        }

        public async Task<string> GetTokenAsync(string tokenUrl)
        {
            var parameters = new
            {
                appKey = _appKey,
                appSecret = _appSecret, // 按需传参
                                         // 其他参数如 grant_type、scope 等根据接口要求调整
            };

            var content = new StringContent(
                JsonConvert.SerializeObject(parameters),
                Encoding.UTF8,
                "application/json"
            );
            var response = await _httpClient.PostAsync(tokenUrl, content);
            response.EnsureSuccessStatusCode(); // 抛异常处理错误
            var responseBody = await response.Content.ReadAsStringAsync();
            var result = JsonConvert.DeserializeObject<dynamic>(responseBody);
            return result.data.access_token; // 假设返回字段为 access_token
        }



    }

    //private readonly string _appKey = "8EG566b9bedd2bf46d";
    //private readonly string _appSecret = "48edc4425647425d87f806a1ba492580";
    //private readonly string _tokenEndpoint = "https://ediuat.mychery.com/prod-api/auth/public/login/appKey";

    //private readonly HttpClient _httpClient;
    //private readonly SemaphoreSlim _refreshLock = new SemaphoreSlim(1, 1);
    //private string _currentToken;
    //private DateTime _tokenExpiry;
    //private bool _disposed;

    //public TokenServiceController()
    //{
    //    _httpClient = new HttpClient();
    //    _httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
    //}

    //public async Task<string> GetTokenAsync(CancellationToken cancellationToken = default)
    //{
    //    // 检查令牌是否存在且未过期（提前60秒刷新以防止边缘情况）
    //    if (!string.IsNullOrEmpty(_currentToken) && _tokenExpiry > DateTime.UtcNow.AddSeconds(60))
    //    {
    //        return _currentToken;
    //    }

    //    // 等待获取锁，确保只有一个线程刷新令牌
    //    await _refreshLock.WaitAsync(cancellationToken);
    //    try
    //    {
    //        // 再次检查，避免其他线程已经刷新了令牌
    //        if (!string.IsNullOrEmpty(_currentToken) && _tokenExpiry > DateTime.UtcNow.AddSeconds(60))
    //        {
    //            return _currentToken;
    //        }

    //        // 调用认证API获取新令牌
    //        var tokenResponse = await FetchNewTokenAsync(cancellationToken);

    //        // 更新令牌和过期时间
    //        _currentToken = tokenResponse.AccessToken;
    //        _tokenExpiry = DateTime.UtcNow.AddSeconds(tokenResponse.ExpiresIn);

    //        return _currentToken;
    //    }
    //    finally
    //    {
    //        _refreshLock.Release();
    //    }
    //}

    //private async Task<TokenResponse> FetchNewTokenAsync(CancellationToken cancellationToken)
    //{
    //    try
    //    {
    //        // 创建请求内容
    //        var requestBody = new
    //        {
    //            appKey = _appKey,
    //            appSecret = _appSecret
    //        };

    //        var content = new StringContent(
    //            JsonSerializer.Serialize(requestBody),
    //            Encoding.UTF8,
    //            "application/json");

    //        // 发送请求
    //        var response = await _httpClient.PostAsync(_tokenEndpoint, content, cancellationToken);
    //        response.EnsureSuccessStatusCode();

    //        // 解析响应
    //        var jsonResponse = await response.Content.ReadAsStringAsync(cancellationToken);
    //        var tokenResponse = JsonSerializer.Deserialize<TokenResponse>(
    //            jsonResponse,
    //            new JsonSerializerOptions { PropertyNameCaseInsensitive = true });

    //        if (tokenResponse == null || string.IsNullOrEmpty(tokenResponse.AccessToken))
    //        {
    //            throw new InvalidOperationException("Failed to retrieve access token.");
    //        }

    //        return tokenResponse;
    //    }
    //    catch (Exception ex)
    //    {
    //        Console.WriteLine($"Token acquisition failed: {ex.Message}");
    //        throw;
    //    }
    //}

    //// 令牌响应模型
    //private class TokenResponse
    //{
    //    public string AccessToken { get; set; }
    //    public int ExpiresIn { get; set; } = 3600; // 默认1小时
    //}

    //public void Dispose()
    //{
    //    Dispose(true);
    //    GC.SuppressFinalize(this);
    //}

    //protected virtual void Dispose(bool disposing)
    //{
    //    if (!_disposed)
    //    {
    //        if (disposing)
    //        {
    //            _httpClient?.Dispose();
    //            _refreshLock?.Dispose();
    //        }
    //        _disposed = true;
    //    }
    //}

    //public Task ExecuteAsync()
    //{
    //    throw new NotImplementedException();
    //}
}