using System;
using System.Collections;
using System.Net.Http;
using System.Text;
using System.Text.Json;
using System.Text.RegularExpressions;
using System.Threading.Tasks;

class Program
{

    static async Task Main()
    {
        string apiKey = "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";

        singleMessage[] allMessages = [];
        //allMessages = allMessages.Append(new singleMessage("system", "You are a poetic assistant, skilled in explaining complex programming concepts with creative flair.")).ToArray();
        //allMessages = allMessages.Append(new singleMessage("system", "You are a personal assistant, you give brief but exact answers.")).ToArray();
        allMessages = allMessages.Append(new singleMessage("system", @"
You are a Spanish teacher.
You aim to improve the vocabulary and spelling of the student.
        
When the student makes errors
- Error feedback to the user using English language
- Do not correct accents of characters.
- Do not correct upper- lower case errors.
")).ToArray();

        while (true)
        {
            Console.ForegroundColor = ConsoleColor.White;
            Console.Write(">> ");
            var prompt = Console.ReadLine();
            if (prompt?.ToLower() == "bye")
            {
                break;
            }

            allMessages = allMessages.Append(new singleMessage("user", prompt)).ToArray();

            Console.ForegroundColor = ConsoleColor.Cyan;
            Console.WriteLine();
            var currentResponse = String.Empty;
            var response = await GetChatGPTResponse(apiKey, allMessages);

            Console.WriteLine(response);
            Console.WriteLine();

            allMessages = allMessages.Append(new singleMessage("assistant", response)).ToArray();
        }
    }

    static async Task<string> GetChatGPTResponse(string apiKey, singleMessage[] allMessages)
    {
        using (HttpClient client = new HttpClient())
        {
            string apiUrl = "https://api.openai.com/v1/chat/completions";

            // Prepare the request data
            var requestData = new
            {
                model = "gpt-3.5-turbo",
                messages = allMessages,
                max_tokens = 256,
                top_p = 1,
                frequency_penalty = 0,
                presence_penalty = 0
            };

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

            // Set OpenAI API key in the Authorization header
            client.DefaultRequestHeaders.Add("Authorization", $"Bearer {apiKey}");

            // Make the API request
            HttpResponseMessage response = await client.PostAsync(apiUrl, content);

            if (response.IsSuccessStatusCode)
            {
                string responseBody = await response.Content.ReadAsStringAsync();
                //Console.WriteLine(responseBody);
                var responseObject = JsonDocument.Parse(responseBody);
                return responseObject?.RootElement.GetProperty("choices")[0].GetProperty("message").GetProperty("content").ToString().Trim();
            }
            else
            {
                Console.WriteLine($"Error: {response.StatusCode}");
                return null;
            }
        }
    }
}

class singleMessage
{
    public string role { get; set; }
    public string content { get; set; }
    public singleMessage(string intitRole, string initContent)
    {
        role = intitRole;
        content = initContent;
    }
}