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 RRCAG.Business;

namespace VehicleSalesQuoteKyleSpecht
{
    /// <summary>
    /// Represents a Vehicle Sales Quote Form
    /// </summary>
    public partial class VehicleSalesQuoteForm : Form
    {
        private SalesQuote salesQuote;
        private const decimal tax = .13m;

        /// <summary>
        /// Initialzes a Vehicle Sales Quote Form
        /// </summary>
        public VehicleSalesQuoteForm()
        {
            InitializeComponent();
            salesQuote = null;
            lblSummarySalesTax.Text = string.Format("Sales Tax ({0}%):", Math.Round(tax * 100, 0));
            btnCalculate.Click += new EventHandler(btnCalculate_Click);
            txtTradeInValue.TextChanged += new EventHandler(VehicleSalePriceAndTradeIn_TextChanged);
            txtVehicleSalesPrice.TextChanged += new EventHandler(VehicleSalePriceAndTradeIn_TextChanged);
            nudAnnualInterestRate.ValueChanged += new EventHandler(ButtonCheckboxNumYearsAndInterestRate_Changed);
            nudNumOfYears.ValueChanged += new EventHandler(ButtonCheckboxNumYearsAndInterestRate_Changed);
            chkComputerNav.CheckedChanged += new EventHandler(ButtonCheckboxNumYearsAndInterestRate_Changed);
            chkLeatherInterior.CheckedChanged += new EventHandler(ButtonCheckboxNumYearsAndInterestRate_Changed);
            chkStereoSystem.CheckedChanged += new EventHandler(ButtonCheckboxNumYearsAndInterestRate_Changed);
            radCustom.CheckedChanged += new EventHandler(ButtonCheckboxNumYearsAndInterestRate_Changed);
            radPearlized.CheckedChanged += new EventHandler(ButtonCheckboxNumYearsAndInterestRate_Changed);
            radStandard.CheckedChanged += new EventHandler(ButtonCheckboxNumYearsAndInterestRate_Changed);
            btnReset.Click += new EventHandler(btnReset_Click);

        }

        /// <summary>
        /// Handled when the Reset button is clicked.
        /// </summary>
        void btnReset_Click(object sender, EventArgs e)
        {
            DialogResult result = MessageBox.Show("Do you want to reset the form?", "Reset Form", MessageBoxButtons.YesNo, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button2);

            if (result == DialogResult.Yes)
            {
                ResetForm();
            }
        }

        /// <summary>
        /// Handled when a Radio Button, Checkbox, Number of years or Interest Rate is changed.
        /// </summary>
        void ButtonCheckboxNumYearsAndInterestRate_Changed(object sender, EventArgs e)
        {
            if (salesQuote != null)
            {
                btnCalculate.PerformClick();
            }
        }

        /// <summary>
        /// Handled when the Vehicle Sale Price or Trade In Value text is changed..
        /// </summary>
        void VehicleSalePriceAndTradeIn_TextChanged(object sender, EventArgs e)
        {
            TextChangedReset();
        }

        /// <summary>
        /// Handled when the Calculate button is clicked.
        /// </summary>
        void btnCalculate_Click(object sender, EventArgs e)
        {
            decimal vehicleSalesPrice;
            decimal tradeInValue;

            bool vehicleSalesPriceTextBool = decimal.TryParse(txtVehicleSalesPrice.Text, out vehicleSalesPrice);
            bool tradeInTextBool = decimal.TryParse(txtTradeInValue.Text, out tradeInValue);

            if (!vehicleSalesPriceTextBool) //Cannot contain letters or special characters
            {
                errorProvider1.SetError(txtVehicleSalesPrice, "Vehicle price cannot contain letters or special characters.");
                errorProvider1.SetIconPadding(txtVehicleSalesPrice, 3);
            }
            else
            {
                if (vehicleSalesPrice <= 0) //Cannot be less than or equal to 0.
                {
                    errorProvider1.SetError(txtVehicleSalesPrice, "Vehicle price cannot be less than or equal to 0.");
                    errorProvider1.SetIconPadding(txtVehicleSalesPrice, 3);
                }
            }

            if (!tradeInTextBool) // Cannot contain special characters or letters.
            {
                errorProvider1.SetError(txtTradeInValue, "Trade-in value cannot contain letters or special characters.");
                errorProvider1.SetIconPadding(txtTradeInValue, 3);
            }
            else
            {
                if (tradeInValue < 0) // Cannot be less than 0.
                {
                    errorProvider1.SetError(txtTradeInValue, "Trade-in value cannot be less than 0.");
                    errorProvider1.SetIconPadding(txtTradeInValue, 3);
                }
            }

            if (vehicleSalesPriceTextBool && vehicleSalesPrice > 0) // Is a number AND greater than 0.
            {
                if (tradeInValue > vehicleSalesPrice) //Trade in value cannot be bigger than vehicle sales price
                {
                    errorProvider1.SetError(txtTradeInValue, "Trade-in value cannot exceed the vehicle sale price.");
                    errorProvider1.SetIconPadding(txtTradeInValue, 3);
                }
                else //Everything valides we calculate.
                {
                    errorProvider1.SetError(txtTradeInValue, "");
                    errorProvider1.SetError(txtVehicleSalesPrice, "");

                    //decimal tax = .14m;

                    salesQuote = new SalesQuote(decimal.Parse(txtVehicleSalesPrice.Text), decimal.Parse(txtTradeInValue.Text), tax, Accessories.None, ExteriorFinish.None);

                    AccessoriesCheck();
                    FinishCheck();


                    lblSummaryVehiclesSalePriceOutput.Text = string.Format("{0:C}", salesQuote.VehicleSalePrice);
                    lblSummaryOptionsOutput.Text = string.Format("{0:N}", salesQuote.AccessoryCost + salesQuote.FinishCost);
                    lblSummarySubtotalOutput.Text = string.Format("{0:C}", salesQuote.SubTotal);
                    lblSummarySalesTaxOutput.Text = string.Format("{0:N}", salesQuote.SalesTax);
                    lblSummaryTotalOutput.Text = string.Format("{0:C}", salesQuote.Total);
                    lblSummaryTradeInOutput.Text = string.Format("{0:N}", salesQuote.TradeInAmount * -1);
                    lblSummaryAmountDueOutput.Text = string.Format("{0:C}", salesQuote.AmountDue);
                    lblFinanceMonthlyPaymentOutput.Text = string.Format("{0:C}", salesQuote.GetPayment(nudAnnualInterestRate.Value / 100, (int)nudNumOfYears.Value, salesQuote.AmountDue) / 12);
                }
            }
        }

        /// <summary>
        /// Reset's the form to default input.
        /// </summary>
        public void ResetForm()
        {
            salesQuote = null;
            txtVehicleSalesPrice.Text = "";
            txtTradeInValue.Text = "0";
            lblSummaryAmountDueOutput.Text = "";
            lblSummaryOptionsOutput.Text = "";
            lblSummarySalesTaxOutput.Text = "";
            lblSummarySubtotalOutput.Text = "";
            lblSummaryTotalOutput.Text = "";
            lblSummaryTradeInOutput.Text = "";
            lblSummaryVehiclesSalePriceOutput.Text = "";
            lblFinanceMonthlyPaymentOutput.Text = "";
            chkComputerNav.Checked = false;
            chkLeatherInterior.Checked = false;
            chkStereoSystem.Checked = false;
            radCustom.Checked = false;
            radPearlized.Checked = false;
            radStandard.Checked = true;
            nudAnnualInterestRate.Value = 5m;
            nudNumOfYears.Value = 1m;
            errorProvider1.SetError(txtTradeInValue, "");
            errorProvider1.SetError(txtVehicleSalesPrice, "");
            txtVehicleSalesPrice.Focus();
        }

        /// <summary>
        /// Adds the Accessories Chosen to the Vehicle Sales Quote.
        /// </summary>
        public void AccessoriesCheck()
        {
            if (chkComputerNav.Checked && chkLeatherInterior.Checked && chkStereoSystem.Checked)
            {
                salesQuote.AccessoriesChosen = Accessories.All;
            }
            else if (chkComputerNav.Checked && chkLeatherInterior.Checked)
            {
                salesQuote.AccessoriesChosen = Accessories.LeatherAndNavigation;
            }
            else if (chkStereoSystem.Checked && chkComputerNav.Checked)
            {
                salesQuote.AccessoriesChosen = Accessories.StereoAndNavigation;
            }
            else if (chkStereoSystem.Checked && chkLeatherInterior.Checked)
            {
                salesQuote.AccessoriesChosen = Accessories.StereoAndLeather;
            }
            else if (chkComputerNav.Checked)
            {
                salesQuote.AccessoriesChosen = Accessories.ComputerNavigation;
            }
            else if (chkLeatherInterior.Checked)
            {
                salesQuote.AccessoriesChosen = Accessories.LeatherInterior;
            }
            else if (chkStereoSystem.Checked)
            {
                salesQuote.AccessoriesChosen = Accessories.StereoSystem;
            }
        }

        /// <summary>
        /// Adds the Exterior Finish chosen to the Vehicle Sales Quote.
        /// </summary>
        public void FinishCheck()
        {
            if (radCustom.Checked)
            {
                salesQuote.ExteriorFinishChosen = ExteriorFinish.Custom;
            }

            else if (radPearlized.Checked)
            {
                salesQuote.ExteriorFinishChosen = ExteriorFinish.Pearlized;
            }

            else if (radStandard.Checked)
            {
                salesQuote.ExteriorFinishChosen = ExteriorFinish.Standard;
            }
        }

        /// <summary>
        /// Resets the Summary and Monthly Payment values on the form to initial state.
        /// </summary>
        public void TextChangedReset()
        {
            salesQuote = null;
            lblSummaryAmountDueOutput.Text = "";
            lblSummaryOptionsOutput.Text = "";
            lblSummarySalesTaxOutput.Text = "";
            lblSummarySubtotalOutput.Text = "";
            lblSummaryTotalOutput.Text = "";
            lblSummaryTradeInOutput.Text = "";
            lblSummaryVehiclesSalePriceOutput.Text = "";
            lblFinanceMonthlyPaymentOutput.Text = "";
        }


    }
}