using System;
using System.Drawing;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using System.Collections.Generic;
using System.Text;
using System.Linq;
using System.Configuration;

namespace TradeIdeas.TIProGUI
{
    public partial class CustomMessageBox : Form
    {
        private const int itemPadding = 7;
        private bool _isBuy;
        private List<Label> labelMessages;


        public CustomMessageBox(bool isBuy)
        {
            this._isBuy = isBuy;
            InitializeComponent();
            labelMessages = new List<Label>();
            Text += isBuy ? $" (Buy)" : $" (Sell)";
            int labelBottom = UpdateLabelContent();
            okButton.Location = new Point(okButton.Location.X, labelBottom);
            linkLabel1.Location = new Point(linkLabel1.Location.X, labelBottom + 3);
            Height = linkLabel1.Bottom + itemPadding;
        }

        /// <summary>
        /// Utility method to set the Requirements on the bulleted list labels
        /// </summary>
        /// <returns>The bottom edge of the label</returns>
        private int UpdateLabelContent()
        {
            var bullet = "\t\u2022  ";
            var messageBuilder = new StringBuilder(200);
            var messages = new List<string>();

            if (!GuiEnvironment.TradeRequirements.IsBPWindowPresent)
                messages.Add($"{bullet}There is no Brokerage+ window opened.");
            if (!ConfiguredStrategy())
                messages.Add($"{bullet}There is no default chart trading strategy enabled.");
            if (!ConfiguredAccount() && ConfiguredStrategy())
                messages.Add($"{bullet}There is no account assigned to your default chart strategy.");
            if (!GuiEnvironment.TradeRequirements.IsBrokerConnected)
                messages.Add($"{bullet}There are no broker connections at this time.");
            if (messages.Any() && messages.Count > 1)
                messages.Insert(0,"We found the following issues:");
            else
                messages[0]=messages[0].Replace(bullet, "");
            int position = 10;
            foreach (var item in messages)
            {
                var label = GetNewLabel(position,item);
                this.Controls.Add(label);
                position = label.Bottom + 6;
                labelMessages.Add(label);
            }
            return labelMessages.Last().Bottom + itemPadding*2;
        }
        
        public Label GetNewLabel(int position,string text)
        {
            var label1 = new Label()
            {
                AutoSize = true,
                Location = new System.Drawing.Point(12, position),
                Name = "label1"+position,
                Size = new System.Drawing.Size(151, 13),
                Text = text,
                Padding = new Padding(0),
            };
            return label1;
        }

        /// <summary>
        /// Show method is overloaded which is used to display message
        /// and this is static method so that we don't need to create 
        /// object of this class to call this method.
        /// </summary>
        /// <param name="messageText"></param>
        internal static DialogResult ShowCustomDialog(bool isBuy)
        {

            if (GuiEnvironment.ChartOpenStrategyTab != null)
                GuiEnvironment.ChartOpenStrategyTab();

            if (GuiEnvironment.TradeRequirements.AllLongRequirements && isBuy || GuiEnvironment.TradeRequirements.AllShortRequirements && !isBuy)
                return DialogResult.OK;
            CustomMessageBox frmMessage = new CustomMessageBox(isBuy);
            return frmMessage.ShowDialog();
        }

        /// <summary>
        /// Method to check if the the Account requirements are met depending on the _isBuy
        /// </summary>
        /// <returns></returns>
        private bool ConfiguredAccount()
        {
            return _isBuy ? GuiEnvironment.TradeRequirements.IsAccountLongConfigured: GuiEnvironment.TradeRequirements.IsAccountShortConfigured;
        }

        /// <summary>
        /// Method to check if the the Strategy requirements are met depending on the _isBuy
        /// </summary>
        /// <returns></returns>
        private bool ConfiguredStrategy()
        {
            return _isBuy ? GuiEnvironment.TradeRequirements.ChartLongStrategyConfigured : GuiEnvironment.TradeRequirements.ChartShortStrategyConfigured;
        }


        private void okButton_Click(object sender, EventArgs e)
        {
            if (GuiEnvironment.ChartOpenStrategyTab != null)
                GuiEnvironment.ChartOpenStrategyTab.Invoke();
            DialogResult = DialogResult.None;
            Close();
        }

        private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            System.Diagnostics.Process.Start("https://www.trade-ideas.com/guide/chapter/21_4_7/21.4.7Set_as_Default_Chart_Long_Short_Strategy.html");
        }

    }

}