using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;

//using Azure;

namespace WPFUI.Test
{
    class DeepSeekHttpClient
    {
        private readonly HttpClient _client;
        private const string BaseUrl = "https://api.deepseek.com";
        private const string ApiUrl = "https://api.deepseek.com/chat/completions";
        private const string ApiKey = "sk-3a3126167f1343228b1a5745bcd0bf01"; // 替换为你的实际API Key

        public DeepSeekHttpClient()
        {
            _client = new HttpClient();
            _client.DefaultRequestHeaders.Add("Authorization", $"Bearer {ApiKey}");
        }

        public async Task<string> GetResponseAsync(string prompt)
        {
            using var request = CreateRequest(prompt);
            using var response = await _client.SendAsync(request);

            var responseJson = await response.Content.ReadAsStringAsync();
            if (!response.IsSuccessStatusCode)
            {
                throw new HttpRequestException($"API Error: {response.StatusCode}\n{responseJson}");
            }

            return ExtractResponseContent(responseJson);
        }

        private HttpRequestMessage CreateRequest(string prompt)
        {
            var body = new
            {
                model = "deepseek-chat",
                messages = new[] { new { role = "user", content = prompt } },
                temperature = 0.7
            };

            return new HttpRequestMessage(HttpMethod.Post, ApiUrl)
            {
                Content = new StringContent(
                    JsonSerializer.Serialize(body),
                    Encoding.UTF8,
                    "application/json")
            };
        }

        private static string ExtractResponseContent(string json)
        {
            using var doc = JsonDocument.Parse(json);
            return doc.RootElement
                .GetProperty("choices")[0]
                .GetProperty("message")
                .GetProperty("content")
                .GetString() ?? string.Empty;
        }

        public static async Task<string> Run()
        {
            var client = new DeepSeekHttpClient();
            return await client.GetResponseAsync("如何学习人工智能？");
        }
    }
}