using System;
using System.Net.Http;
using System.Net.Mail;
using System.Text;
using System.Text.Json;
using OtpNet;
using DotNetEnv;

namespace PacerConsole
{
    class Program
    {
        // Put credentials here

        static string username;
        static string password;

        static async Task Main(string[] args)
        {
            DotNetEnv.Env.Load();
            //string secret = "2PUSNHLSWJTMBEPQUFUJHWPBCYKJHIGI";
            string secret = Environment.GetEnvironmentVariable("OTP_SECRET");
            username = Environment.GetEnvironmentVariable("USERNAME");
            password = Environment.GetEnvironmentVariable("PASSWORD");


            byte[] base32Bytes = Base32Encoding.ToBytes(secret);
            Totp otp = new Totp(base32Bytes, step: 30);
            string otpCode = otp.ComputeTotp();

            Console.WriteLine("OTP Code: " + otpCode);

            string token = await PacerLogin(otpCode);   // await it
            if (token != "1" && token != "2")
            {
                await PacerLogout(token);
            }
        }   //Main closes HERE


        static async Task<string> PacerLogin(string otpCode)   //Task is async, which i forget. Change to Task<string> when ready to continue
        {
            string url = "https://qa-login.uscourts.gov/services/cso-auth";

            var payload = new
            {
                loginId = username,
                password = password,
                otpCode = otpCode
            };

            string json = JsonSerializer.Serialize(payload);

            HttpClientHandler handler = new HttpClientHandler()
            {
                UseProxy = false
            };

            using (HttpClient client = new HttpClient(handler))
            {
                client.DefaultRequestHeaders.Add("Accept", "application/json");
                HttpContent content = new StringContent(json, Encoding.UTF8, "application/json");

                try
                {
                    HttpResponseMessage response = await client.PostAsync(url, content);
                    string responseBody = await response.Content.ReadAsStringAsync();

                    Console.WriteLine("Raw Response" + responseBody);

                    using (JsonDocument doc = JsonDocument.Parse(responseBody))
                    {
                        JsonElement root = doc.RootElement;
                        string token = root.GetProperty("nextGenCSO").GetString();
                        string loginResult = root.GetProperty("loginResult").GetString();
                        string errorDesc = "";

                        if (root.TryGetProperty("errorDescription", out JsonElement errorElement))
                        {
                            errorDesc = errorElement.GetString();
                        }

                        if (loginResult == "0")
                        {
                            Console.ForegroundColor = ConsoleColor.Green;
                            Console.WriteLine("Login successful!");
                            Console.WriteLine("Token: " + token);
                            Console.ResetColor();
                            return token;
                        }
                        else
                        {
                            Console.ForegroundColor = ConsoleColor.Red;
                            Console.WriteLine("Login failed: " + errorDesc);
                            Console.ResetColor();
                            return "1";
                        }
                    }
                }//try closes here
                catch (Exception ex)
                {
                    Console.BackgroundColor = ConsoleColor.DarkRed;
                    Console.ForegroundColor = ConsoleColor.White;
                    Console.WriteLine("Error: " + ex.Message);
                    Console.ResetColor();
                    return "2";
                }
            }
        }   // PacerLogin closes here
        static async Task PacerLogout(string token)
        {
            string url = "https://qa-login.uscourts.gov/services/cso-logout";

            var payload = new
            {
                nextGenCSO = token
            };

            string json = JsonSerializer.Serialize(payload);
            //HttpClientHandler handler = new HttpClientHandler() { UseProxy = false };

            using (HttpClient client = new HttpClient())
            {
                client.DefaultRequestHeaders.Add("Accept", "application/json");
                HttpContent content = new StringContent(json, Encoding.UTF8, "application/json");

                try
                {
                    HttpResponseMessage response = await client.PostAsync(url, content);
                    string responseBody = await response.Content.ReadAsStringAsync();

                    using (JsonDocument doc = JsonDocument.Parse(responseBody))
                    {
                        JsonElement root = doc.RootElement;
                        string loginResult = root.GetProperty("loginResult").GetString();

                        if (loginResult == "0")
                        {
                            Console.ForegroundColor = ConsoleColor.Green;
                            Console.WriteLine("Logged out successfully!");
                            Console.ResetColor();
                        }
                        else
                        {
                            Console.ForegroundColor = ConsoleColor.Red;
                            Console.WriteLine("Logout failed!");
                            Console.ResetColor();
                        }
                    }
                }
                catch (Exception ex)
                {
                    Console.ForegroundColor = ConsoleColor.Red;
                    Console.WriteLine("Logout error: " + ex.Message);
                    Console.ResetColor();
                }
            }
        }//pacer Logout closes here
    }   // class closes here
}   // namespace closes here