using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace GroundZero.KeyCodes
{
    public partial class MsgEditor : Form
    {
        public MsgEditor()
        {
            InitializeComponent();
        }

        private MessageType currentMessageType = MessageType.None;
        private string currentMessage = "";

        #region open message types menu clicks

        private void mnuLiteTrialGreeting_Click(object sender, EventArgs e)
        {
            OpenMessage(MessageType.TrialGreetingLite);
        }

        private void mnuFullTrialGreeting_Click(object sender, EventArgs e)
        {
            OpenMessage(MessageType.TrialGreetingFull);
        }

        private void mnuKeyNewFull_Click(object sender, EventArgs e)
        {
            OpenMessage(MessageType.KeyNewFull);
        }

        private void mnuKeyNewLite_Click(object sender, EventArgs e)
        {
            OpenMessage(MessageType.KeyNewLite);
        }

        private void mnuKeyAddOnFull_Click(object sender, EventArgs e)
        {
            OpenMessage(MessageType.KeyAddOnFull);
        }

        private void mnuKeyAddOnLite_Click(object sender, EventArgs e)
        {
            OpenMessage(MessageType.KeyAddOnLite);
        }

        private void mnuKeyTrialFull_Click(object sender, EventArgs e)
        {
            OpenMessage(MessageType.KeyTrialFull);
        }

        private void mnuKeyTrialLite_Click(object sender, EventArgs e)
        {
            OpenMessage(MessageType.KeyTrialLite);
        }

        #endregion open message types menu clicks

        #region nuts and bolts
        private bool IsDirty
        {
            get
            {
                if (currentMessageType == MessageType.None) return false;
                return currentMessage != edMsg.Text;
            }
        }



        private void OpenMessage(MessageType mtype)
        {
            if (IsDirty)
            {
                if (!PromptToSave())
                    return;
            }

            Read(mtype);
            edMsg.Enabled = true;
        }

        private bool PromptToSave()
        {
            DialogResult dr = MessageBox.Show("Save changes?", "Changes have been made", MessageBoxButtons.YesNoCancel);
            if(dr== System.Windows.Forms.DialogResult.Cancel)
                return false;

            if (dr == System.Windows.Forms.DialogResult.No) return true;

            Save();
            return true;
        }


        private void Save()
        {            
            File.WriteAllText(FileName(currentMessageType), edMsg.Text);
            currentMessage = edMsg.Text;
            ShowDirty();
        }


        private void Read(MessageType mtype)
        { 
            currentMessageType = mtype;
            this.Text = "Key generator message editor - " + FileName(mtype);
            if (!File.Exists(FileName(mtype)))
            {
                MessageBox.Show("File " + FileName(mtype) + " not found, a new one will be created on save");
                edMsg.Text = "";
                currentMessage = "";
                return;
            }
            currentMessage=edMsg.Text = File.ReadAllText(FileName(mtype));
            ShowDirty();
        }

       


        private void saveToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Save();
        }

        private void exitToolStripMenuItem_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void MsgEditor_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (IsDirty)
            {
                if (!PromptToSave())
                {
                    e.Cancel = true;
                    return;
                }
            }
        }

        private void edMsg_TextChanged(object sender, EventArgs e)
        {
            ShowDirty();
        }

        private void ShowDirty()
        {
            this.Text = this.Text.Replace("*", "");
            if (IsDirty)
            {
                this.Text = "*" + this.Text;

            }
        }
        #endregion nuts and bolts

        #region Tokens
        private void mnuInsertFirstNameToken_Click(object sender, EventArgs e)
        {
            edMsg.SelectedText = "[FirstName]";
        }

        private void mnuInsertTokenLicenseExpiryDate_Click(object sender, EventArgs e)
        {
            edMsg.SelectedText = "[LicenseExpiryDate]";
        }

        private void mnuInsertTokenLicenseDescription_Click(object sender, EventArgs e)
        {
            edMsg.SelectedText = "[LicenseDescription]";
        }

        private void mnuInsertTokenLicenseKey_Click(object sender, EventArgs e)
        {
            edMsg.SelectedText = "[LicenseKey]";
        }

        #endregion tokens

        #region MessageType enum
        enum MessageType
        {
            None,
            TrialGreetingLite,
            TrialGreetingFull,
            KeyNewFull,
            KeyNewLite,
            KeyAddOnFull,
            KeyAddOnLite,
            KeyTrialFull,
            KeyTrialLite

        }

        private string FileName(MessageType mtype)
        {
            switch (mtype)
            {
                case MessageType.TrialGreetingFull:
                    return "TrialGreetingFull.txt";
                case MessageType.TrialGreetingLite:
                    return "TrialGreetingLite.txt";
                case MessageType.KeyNewFull:
                    return "KeyNewFull.txt";
                case MessageType.KeyNewLite:
                    return "KeyNewLite.txt";
                case MessageType.KeyAddOnFull:
                    return "KeyAddOnFull.txt";
                case MessageType.KeyAddOnLite:
                    return "KeyAddOnLite.txt";
                case MessageType.KeyTrialFull:
                    return "KeyTrialFull.txt";
                case MessageType.KeyTrialLite:
                    return "KeyTrialLite.txt";

            }

            return "";
        }
        #endregion MessageTypeEnum

       
        
    }//end of class

   

}