using QRCoder;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using static QRCoder.PayloadGenerator;
 
namespace QRCode_Gen
{
    public partial class FrmMain : Form
    {
        private bool m_FormLoaded = false;
        private Bitmap m_qrCodeImage;
 
        private Dictionary<string, string> m_dctCmbBoxPlayloadType = new Dictionary<string, string>();
        private Dictionary<string, string> m_dctCmbBoxFileDataType = new Dictionary<string, string>();
        private Dictionary<string, PictureBoxSizeMode> m_dctCmbBoxPictureSizeMode = new Dictionary<string, PictureBoxSizeMode>();
 
        public FrmMain()
        {
            InitializeComponent();
        }
 
        private void FrmMain_Load(object sender, EventArgs e)
        {
            try
            {
                Populate_CmbBox_PlayLoadType();
                Populate_CmbBox_SaveFileType();
                Populate_CmbBox_PictureSizeMode(PictureBoxSizeMode.StretchImage.ToString());
                CmbBox_ImageFormat.Text = "Bmp";
 
                m_FormLoaded = true;
            }
            catch (Exception ex)
            {
                RTxt_Log.Text += string.Format("\r\n{0}", ex.Message);
                MessageBox.Show(ex.Message, "FrmMain_Load. Error"
                                , MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
 
        #region Main Event Handlers
        private void BtnGeneteQR_Click(object sender, EventArgs e)
        {
            string txtToBeEncoded = string.Empty;
            string payload = string.Empty;
            int pixelsPerModule = 0;
            try
            {
                txtToBeEncoded = RTxt_Totranslate.Text;
                pixelsPerModule = int.Parse(TxtPixelsPerModule.Text);
                string playLoadSelect = ((KeyValuePair<string, string>)CmbBox_PlayloadType.SelectedItem).Key;
 
                QRCodeGenerator qrGenerator = new QRCodeGenerator();
                QRCodeData qrCodeData;
 
                switch (playLoadSelect)
                {
                    case "bookmark":
                        string title = TxtExtraInfo1.Text.Trim();
                        //"http://code-bude.net"
                        Bookmark generatorBookmark = new Bookmark(txtToBeEncoded, title);
                        payload = generatorBookmark.ToString();
                        qrCodeData = qrGenerator.CreateQrCode(payload, QRCodeGenerator.ECCLevel.Q);
                        break;
                    case "calendarEvent":
                        qrCodeData = qrGenerator.CreateQrCode(payload, QRCodeGenerator.ECCLevel.Q);
                        break;
                    case "contactData":
                        qrCodeData = qrGenerator.CreateQrCode(payload, QRCodeGenerator.ECCLevel.Q);
                        break;
                    case "geolocation":
                        qrCodeData = qrGenerator.CreateQrCode(payload, QRCodeGenerator.ECCLevel.Q);
                        break;
                    case "email":
                        string emailSubject = txtToBeEncoded;
                        string emailObject = TxtExtraInfo2.Text;
                        string emailAddress = LblExtraInfo1.Text;
                        Mail generatorMail = new Mail(emailAddress, emailObject, emailSubject);
                        payload = generatorMail.ToString();
                        qrCodeData = qrGenerator.CreateQrCode(payload, QRCodeGenerator.ECCLevel.Q);
                        break;
                    case "mms":
                        qrCodeData = qrGenerator.CreateQrCode(payload, QRCodeGenerator.ECCLevel.Q);
                        break;
                    case "url":
                        Url generator = new Url(txtToBeEncoded);
                        payload = generator.ToString();
                        qrCodeData = qrGenerator.CreateQrCode(payload, QRCodeGenerator.ECCLevel.Q);
                        break;
                    case "sms":
                        string phoneNumber = TxtExtraInfo1.Text.Trim(); //Es.:  +393478165901
                        SMS generatorSMS = new SMS(phoneNumber, txtToBeEncoded);
                        payload = generatorSMS.ToString();
                        qrCodeData = qrGenerator.CreateQrCode(payload, QRCodeGenerator.ECCLevel.Q);
                        break;
                    case "wifi":
                        WiFi generatorWiFi = new WiFi(txtToBeEncoded, TxtExtraInfo1.Text.Trim(), WiFi.Authentication.WPA);
                        payload = generatorWiFi.ToString();
                        qrCodeData = qrGenerator.CreateQrCode(payload, QRCodeGenerator.ECCLevel.Q);
                        break;
                    default:
                        //= "default"
                        qrCodeData = qrGenerator.CreateQrCode(txtToBeEncoded, QRCodeGenerator.ECCLevel.Q);
                        break;
                }
 
                QRCode qrCode = new QRCode(qrCodeData);
                m_qrCodeImage = qrCode.GetGraphic(pixelsPerModule);
 
                SetQRCodePictureSizeMode();
                PctBx_QRCode.Image = m_qrCodeImage;
                RTxt_Log.Text += string.Format("\r\nTesto generato: \"{0}\"\r\nPixelPerModulo: {1}\r\n"
                                        , txtToBeEncoded, pixelsPerModule);
            }
            catch (Exception ex)
            {
                RTxt_Log.Text += string.Format("\r\n{0}", ex.Message);
                MessageBox.Show(ex.Message, "BtnGeneteQR_Click. Error"
                                , MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            /* Original code:
                QRCodeData qrCodeData = qrGenerator.CreateQrCode(txtToBeEncoded
                                                                , QRCodeGenerator.ECCLevel.Q);
                QRCode qrCode = new QRCode(qrCodeData);
                Bitmap qrCodeImage = qrCode.GetGraphic(20);
            ------------------info---------------------
            QRCodeGenerator.ECCLevel        The error correction level. 
                                            Either L (7%), M (15%), Q (25%) or H (30%). 
                                            Tells how much of the QR Code can get corrupted before the code 
                                            isn't readable any longer.
             */
        }
 
        private void CmbBox_PlayloadType_SelectedIndexChanged(object sender, EventArgs e)
        {
            try
            {
                LblMainText.Text = "Testo da tradurre:";
                RTxt_Totranslate.Text = string.Empty;
                LblExtraInfo1.Visible = false;
                LblExtraInfo2.Visible = false;
                TxtExtraInfo1.Visible = false;
                TxtExtraInfo2.Visible = false;
 
                string playLoadSelect = ((KeyValuePair<string, string>)CmbBox_PlayloadType.SelectedItem).Key;
                switch (playLoadSelect)
                {
                    case "bookmark":
                        LblExtraInfo1.Visible = true;
                        LblExtraInfo2.Visible = false;
                        TxtExtraInfo1.Visible = true;
                        TxtExtraInfo2.Visible = false;
 
                        LblMainText.Text = "URL:";
                        LblExtraInfo1.Text = "Descrizione bookmark:";
                        RTxt_Totranslate.Text = "http://";
                        break;
                    case "calendarEvent":
                        MessageBox.Show("Non ancora implementato", "CmbBox_PlayloadType_SelectedIndexChanged"
                                , MessageBoxButtons.OK, MessageBoxIcon.Information);
                        break;
                    case "contactData":
                        MessageBox.Show("Non ancora implementato", "CmbBox_PlayloadType_SelectedIndexChanged"
                                , MessageBoxButtons.OK, MessageBoxIcon.Information);
                        break;
                    case "geolocation":
                        MessageBox.Show("Non ancora implementato", "CmbBox_PlayloadType_SelectedIndexChanged"
                                , MessageBoxButtons.OK, MessageBoxIcon.Information);
                        break;
                    case "email":
                        LblExtraInfo1.Visible = true;
                        LblExtraInfo2.Visible = true;
                        TxtExtraInfo1.Visible = true;
                        TxtExtraInfo2.Visible = true;
 
                        LblMainText.Text = "Testo della e-mail:";
                        LblExtraInfo1.Text = "e-mail:"; //Receiver-Destinatario
                        LblExtraInfo2.Text = "Oggetto:";
                        break;
                    case "mms":
                        MessageBox.Show("Non ancora implementato", "CmbBox_PlayloadType_SelectedIndexChanged"
                                , MessageBoxButtons.OK, MessageBoxIcon.Information);
                        break;
                    case "url":
                        RTxt_Totranslate.Text = "https://";
                        break;
                    case "sms":
                        LblMainText.Text = "Testo SMS:";
                        LblExtraInfo1.Visible = true;
                        TxtExtraInfo1.Visible = true;
                        LblExtraInfo1.Text = "Cell. dest.:";                        
                        break;
                    case "wifi":
                        LblMainText.Text = "WiFi SSID:";
                        LblExtraInfo1.Visible = true;
                        LblExtraInfo1.Text = "WiFi pw:";
                        TxtExtraInfo1.Visible = true;
                        break;
                    default:
                        break;
                }
            }
            catch (Exception ex)
            {
                RTxt_Log.Text += string.Format("\r\n{0}", ex.Message);
                MessageBox.Show(ex.Message, "CmbBox_PlayloadType_SelectedIndexChanged. Error"
                                , MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
 
        private void BtnToBmp_Click(object sender, EventArgs e)
        {
            try
            {
                string txtToBeEncoded = RTxt_Totranslate.Text;
                string imageFormat = ((KeyValuePair<string, string>)CmbBox_ImageFormat.SelectedItem).Key;
 
                switch (imageFormat)
                {
                    case "jpeg":
                        break;
                    case "png":
                        break;
                    case "bmp":
                        break;
                    case "gif":
                        break;
                    default:
                        break;
                }
 
                txtToBeEncoded = txtToBeEncoded.Replace(" ", "_");
                SaveFileDialog dialog = new SaveFileDialog();
                dialog.Title = "Scegli dove salvare il QR Code generato";
                dialog.InitialDirectory = "D:\\Documenti";
                dialog.DefaultExt = "." + imageFormat;
                dialog.FileName = string.Format("{0}.{1}", txtToBeEncoded, imageFormat);
                if (dialog.ShowDialog() == DialogResult.OK)
                {
                    m_qrCodeImage.Save(dialog.FileName, ImageFormat.Jpeg); //Jpeg
                    Clipboard.SetImage(m_qrCodeImage);
                    RTxt_Log.Text += string.Format("Salvato il file: {0}\r\n"
                                                , dialog.FileName);
                }
            }
            catch (Exception ex)
            {
                RTxt_Log.Text += string.Format("\r\n{0}", ex.Message);
                MessageBox.Show(ex.Message, "BtnToBmp_Click. Error"
                                , MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
 
        private void LblTextToTranslate_Click(object sender, EventArgs e)
        {
            PctBx_QRCode.Image = null;
        }
 
        private void Btn_QR2Clipboard_Click(object sender, EventArgs e)
        {
            try
            {
                string txtToBeEncoded = RTxt_Totranslate.Text;
                Clipboard.SetImage(m_qrCodeImage);
                RTxt_Log.Text += string.Format("QR code per {0} è in Clipboard\r\n"
                                            , txtToBeEncoded);
            }
            catch (Exception ex)
            {
                RTxt_Log.Text += string.Format("\r\n{0}", ex.Message);
                MessageBox.Show(ex.Message, "Btn_QR2Clipboard_Click. Error"
                                , MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
 
        private void BtnReset_Click(object sender, EventArgs e)
        {
            RTxt_Totranslate.Text = string.Empty;
            TxtExtraInfo1.Text = string.Empty;
            TxtExtraInfo2.Text = string.Empty;
            PctBx_QRCode.Image = null;
            CmbBox_PlayloadType.SelectedIndex = 0;
            CmbBox_ImageFormat.Text = "Bmp";
        }
 
        private void CmbBox_PictureSizeMode_SelectedIndexChanged(object sender, EventArgs e)
        {
            try
            {
                if (m_FormLoaded)
                {
                    SetQRCodePictureSizeMode();
                }
            }
            catch (Exception ex)
            {
                RTxt_Log.Text += string.Format("\r\n{0}", ex.Message);
                MessageBox.Show(ex.Message, "CmbBox_PictureSizeMode_SelectedIndexChanged. Error"
                                , MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
        #endregion
 
        #region Private methods
        private void Populate_CmbBox_PlayLoadType()
        {
            m_dctCmbBoxPlayloadType.Add("default", "Default");
            m_dctCmbBoxPlayloadType.Add("bookmark", "Bookmark");
            m_dctCmbBoxPlayloadType.Add("calendarEvent", "CalendarEvent");
            m_dctCmbBoxPlayloadType.Add("contactData", "ContactData");
            m_dctCmbBoxPlayloadType.Add("geolocation", "Geolocation");
            m_dctCmbBoxPlayloadType.Add("email", "Email");
            m_dctCmbBoxPlayloadType.Add("mms", "MMS");
            m_dctCmbBoxPlayloadType.Add("url", "URL");
            m_dctCmbBoxPlayloadType.Add("sms", "SMS");
            m_dctCmbBoxPlayloadType.Add("wifi", "WiFi");
 
            BindingSource bndSrcCmbPlayloadType = new BindingSource();
 
            bndSrcCmbPlayloadType.DataSource = m_dctCmbBoxPlayloadType;
            CmbBox_PlayloadType.DataSource = bndSrcCmbPlayloadType;
            CmbBox_PlayloadType.DisplayMember = "Key";
            CmbBox_PlayloadType.ValueMember = "Value";            
        }
 
        private void Populate_CmbBox_SaveFileType()
        {
            m_dctCmbBoxFileDataType.Add("jpeg", "Jpeg");
            m_dctCmbBoxFileDataType.Add("png", "Png");
            m_dctCmbBoxFileDataType.Add("bmp", "Bmp");
            m_dctCmbBoxFileDataType.Add("gif", "Gif");
 
            BindingSource bndSrcCmbDBFileDataType = new BindingSource();
 
            bndSrcCmbDBFileDataType.DataSource = m_dctCmbBoxFileDataType;
            CmbBox_ImageFormat.DataSource = bndSrcCmbDBFileDataType;
            CmbBox_ImageFormat.DisplayMember = "Key";
            CmbBox_ImageFormat.ValueMember = "Value";
        }
        private void Populate_CmbBox_PictureSizeMode(string defaultKeyText = "")
        {
            m_dctCmbBoxPictureSizeMode.Add("Normal", PictureBoxSizeMode.Normal);
            m_dctCmbBoxPictureSizeMode.Add("StretchImage", PictureBoxSizeMode.StretchImage);
            m_dctCmbBoxPictureSizeMode.Add("AutoSize", PictureBoxSizeMode.AutoSize);
            m_dctCmbBoxPictureSizeMode.Add("CenterImage", PictureBoxSizeMode.CenterImage);
            m_dctCmbBoxPictureSizeMode.Add("Zoom", PictureBoxSizeMode.Zoom);
 
            BindingSource bndSrcCmbPictureSizeMode = new BindingSource();
 
            bndSrcCmbPictureSizeMode.DataSource = m_dctCmbBoxPictureSizeMode;
            CmbBox_PictureSizeMode.DataSource = bndSrcCmbPictureSizeMode;
            CmbBox_PictureSizeMode.DisplayMember = "Key";
            CmbBox_PictureSizeMode.ValueMember = "Value";
            if (defaultKeyText != string.Empty)
            {
                int i =  Array.IndexOf(m_dctCmbBoxPictureSizeMode.Keys.ToArray(), defaultKeyText);
                CmbBox_PictureSizeMode.SelectedIndex = i;
            }
        }
 
        private void SetQRCodePictureSizeMode()
        {
            PictureBoxSizeMode sizeMode = ((KeyValuePair<string, PictureBoxSizeMode>)CmbBox_PictureSizeMode.SelectedItem).Value;
 
            PctBx_QRCode.SizeMode = sizeMode;
 
            RTxt_Log.Text += string.Format("\r\nImpostato SizeMode: {0}", sizeMode.ToString());
        }
        #endregion
    }
}