using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using FireWallet;
using Newtonsoft.Json.Linq;

namespace FireWalletLite
{
    public partial class MainForm : Form
    {
        #region Variables
        public string dir = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) + "\\FireWalletLite\\";
        public Dictionary<string, string> Theme { get; set; }
        HttpClient httpClient = new HttpClient();
        Decimal Balance { get; set; }
        String Account = "primary";
        String Password { get; set; }
        #endregion
        public MainForm()
        {
            InitializeComponent();
            UpdateTheme();
        }
        #region Theming
        private void UpdateTheme()
        {
            // Check if file exists
            if (!Directory.Exists(dir))
            {
                CreateConfig(dir);
            }
            if (!File.Exists(dir + "theme.txt"))
            {
                CreateConfig(dir);
            }

            // Read file
            StreamReader sr = new StreamReader(dir + "theme.txt");
            Theme = new Dictionary<string, string>();
            while (!sr.EndOfStream)
            {
                string line = sr.ReadLine();
                string[] split = line.Split(':');
                Theme.Add(split[0].Trim(), split[1].Trim());
            }
            sr.Dispose();

            if (!Theme.ContainsKey("background") || !Theme.ContainsKey("background-alt") || !Theme.ContainsKey("foreground") || !Theme.ContainsKey("foreground-alt"))
            {
                AddLog("Theme file is missing key");
                return;
            }

            // Apply theme
            this.BackColor = ColorTranslator.FromHtml(Theme["background"]);

            // Foreground
            this.ForeColor = ColorTranslator.FromHtml(Theme["foreground"]);


            // Need to specify this for each groupbox to override the black text
            foreach (Control c in Controls)
            {
                ThemeControl(c);
            }
            this.Width = Screen.PrimaryScreen.Bounds.Width / 5 * 3;
            this.Height = Screen.PrimaryScreen.Bounds.Height / 5 * 3;
        }
        public void ThemeControl(Control c)
        {
            if (c.GetType() == typeof(GroupBox) || c.GetType() == typeof(Panel))
            {
                c.ForeColor = ColorTranslator.FromHtml(Theme["foreground"]);
                foreach (Control sub in c.Controls)
                {
                    ThemeControl(sub);
                }
            }
            if (c.GetType() == typeof(TextBox) || c.GetType() == typeof(Button)
                || c.GetType() == typeof(ComboBox) || c.GetType() == typeof(StatusStrip) || c.GetType() == typeof(ToolStrip)
                || c.GetType() == typeof(NumericUpDown))
            {
                c.ForeColor = ColorTranslator.FromHtml(Theme["foreground-alt"]);
                c.BackColor = ColorTranslator.FromHtml(Theme["background-alt"]);
            }
            if (c.GetType() == typeof(Panel)) c.Dock = DockStyle.Fill;
        }
        private void CreateConfig(string dir)
        {
            if (!Directory.Exists(dir))
            {
                Directory.CreateDirectory(dir);
            }
            StreamWriter sw = new StreamWriter(dir + "theme.txt");
            sw.WriteLine("background: #000000");
            sw.WriteLine("foreground: #8e05c2");
            sw.WriteLine("background-alt: #3e065f");
            sw.WriteLine("foreground-alt: #ffffff");
            sw.WriteLine("selected-bg: #000000");
            sw.WriteLine("selected-fg: #ffffff");
            sw.WriteLine("error: #ff0000");
            sw.Dispose();
            AddLog("Created theme file");
        }
        #endregion
        #region Logging
        public void AddLog(string message)
        {
            if (message.Contains("Get Error: No connection could be made because the target machine actively refused it")) return;

            // If file size is over 1MB, rename it to old.log.txt
            if (File.Exists(dir + "log.txt"))
            {
                FileInfo fi = new FileInfo(dir + "log.txt");
                if (fi.Length > 1000000)
                {
                    if (File.Exists(dir + "old.log.txt")) File.Delete(dir + "old.log.txt"); // Delete old log file as it is super old
                    File.Move(dir + "log.txt", dir + "old.log.txt");
                }
            }

            StreamWriter sw = new StreamWriter(dir + "log.txt", true);
            sw.WriteLine(DateTime.Now.ToString() + ": " + message);
            sw.Dispose();
        }
        #endregion
        bool testedLogin = false;
        private void timerUpdate_Tick(object sender, EventArgs e)
        {
            if (SyncLabel.Text != "Status: Node Not Connected")
            {
                if (!testedLogin)
                {
                    testedLogin = true;
                    this.Hide();
                    TestForLogin();
                    this.Show();
                }
            }
            NodeStatus();
        }

        #region API
        private async void NodeStatus()
        {

            if (await APIGet("", false) == "Error")
            {
                SyncLabel.Text = "Status: Node Not Connected";
                return;
            }
            else
            {
                // Get sync status
                String APIresponse = await APIGet("", false);
                JObject resp = JObject.Parse(APIresponse);
                JObject chain = JObject.Parse(resp["chain"].ToString());
                decimal progress = Convert.ToDecimal(chain["progress"].ToString());
                SyncLabel.Text = "Sync: " + decimal.Round(progress * 100, 2) + "%";
            }

            // Try to keep wallet unlocked
            string path = "wallet/" + Account + "/unlock";
            string content = "{\"passphrase\": \"" + Password + "\",\"timeout\": 60}";

            await APIPost(path, true, content);

            path = "";
            content = "{\"method\": \"selectwallet\",\"params\":[ \"" + Account + "\"]}";

            await APIPost(path, true, content);

        }
        private async Task UpdateBalance()
        {
            string response = await APIGet("wallet/" + Account + "/balance?account=default", true);
            if (response == "Error") return;

            JObject resp = JObject.Parse(response);

            decimal available = (Convert.ToDecimal(resp["unconfirmed"].ToString()) - Convert.ToDecimal(resp["lockedUnconfirmed"].ToString())) / 1000000;
            decimal locked = Convert.ToDecimal(resp["lockedUnconfirmed"].ToString()) / 1000000;
            available = decimal.Round(available, 2);
            locked = decimal.Round(locked, 2);
            Balance = available;
        }
        public async Task<string> APIPost(string path, bool wallet, string content)
        {
            if (content == "{\"passphrase\": \"\",\"timeout\": 60}")
            {
                return "";
            }
            string ip = "127.0.0.1";
            string port = "1203";
            if (wallet) port = port + "9";
            else port = port + "7";

            HttpRequestMessage req = new HttpRequestMessage(HttpMethod.Post, "http://" + ip + ":" + port + "/" + path);
            //req.Headers.Add("Authorization", "Basic " + Convert.ToBase64String(System.Text.ASCIIEncoding.ASCII.GetBytes("x:" + key)));
            req.Content = new StringContent(content);
            // Send request


            try
            {
                HttpResponseMessage resp = await httpClient.SendAsync(req);
                if (!resp.IsSuccessStatusCode)
                {
                    AddLog("Post Error: " + resp.StatusCode);
                    AddLog(await resp.Content.ReadAsStringAsync());
                    return "Error";
                }
                return await resp.Content.ReadAsStringAsync();

            }
            catch (Exception ex)
            {
                AddLog("Post Error: " + ex.Message);
                if (ex.Message.Contains("The request was canceled due to the configured HttpClient.Timeout"))
                {
                    Environment.Exit(91);
                }
                return "Error";
            }
        }
        public async Task<string> APIGet(string path, bool wallet)
        {
            string ip = "127.0.0.1";

            string port = "1203";
            if (wallet) port = port + "9";
            else port = port + "7";

            try
            {
                HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, "http://" + ip + ":" + port + "/" + path);
                // Add API key to header
                //request.Headers.Add("Authorization", "Basic " + Convert.ToBase64String(System.Text.ASCIIEncoding.ASCII.GetBytes("x:" + key)));
                // Send request and log response
                HttpResponseMessage response = await httpClient.SendAsync(request);
                if (!response.IsSuccessStatusCode)
                {
                    AddLog("Get Error: " + response.StatusCode);
                    AddLog(await response.Content.ReadAsStringAsync());
                    return "Error";
                }
                return await response.Content.ReadAsStringAsync();

            }
            // Log errors to log textbox
            catch (Exception ex)
            {
                AddLog("Get Error: " + ex.Message);
                if (ex.Message.Contains("The request was canceled due to the configured HttpClient.Timeout"))
                {
                    Environment.Exit(91);
                }
                return "Error";
            }
        }
        #endregion

        private void MainForm_Load(object sender, EventArgs e)
        {
            LoginButton.Left = (this.ClientSize.Width - LoginButton.Width) / 2;
            int widthOfPassword = textBoxPassword.Width + labelPassword.Width;
            labelPassword.Left = (this.ClientSize.Width - widthOfPassword) / 2;
            textBoxPassword.Left = labelPassword.Right;
            labelWelcome.Left = (this.ClientSize.Width - labelWelcome.Width) / 2;
            textBoxPassword.Focus();
        }
        private async void TestForLogin()
        {
            string path = "wallet/" + Account + "/master";
            string response = await APIGet(path, true);
            JObject resp = JObject.Parse(response);
            if (resp["encrypted"].ToString() == "False")
            {
                JObject mnemonic = JObject.Parse(resp["mnemonic"].ToString());
                string phrase = mnemonic["phrase"].ToString();

                // Show form to save mnemonic and encrypt wallet
                FirstLoginForm firstLoginForm = new FirstLoginForm(phrase, this);
                firstLoginForm.ShowDialog();
                firstLoginForm.Dispose();
            }
        }

        private async void Login_Click(object sender, EventArgs e)
        {
            LoginButton.Enabled = false; // To prevent double clicking
            Password = textBoxPassword.Text;

            string path = "wallet/" + Account + "/unlock";
            string content = "{\"passphrase\": \"" + Password + "\",\"timeout\": 60}";

            string response = await APIPost(path, true, content);
            if (response.Contains("Could not decrypt"))
            {
                Password = "";
                NotifyForm notifyForm = new NotifyForm("Incorrect Password");
                notifyForm.ShowDialog();
                notifyForm.Dispose();
                LoginButton.Enabled = true;
            }
            panelLogin.Hide();
        }

        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            // Run taskkill /im "node.exe" /f /t
            ProcessStartInfo startInfo = new ProcessStartInfo();
            startInfo.FileName = "taskkill.exe";
            startInfo.Arguments = "/im \"node.exe\" /f /t";
            startInfo.CreateNoWindow = true;
            Process.Start(startInfo);
            Environment.Exit(0);

        }
    }
}