//
//
// Houseboat Rental Quote Program
//
//



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

namespace HouseboatRentalQuote
{
    public partial class RentalQuoteForm : Form
    {
       const double BASE_PRICE = 309.99;  // $309.99
       const double ENGINE_UPGRADE_RATE = .13; //13%
       const short BASE_PASSENGERS_LIMIT = 3;
       const double EXTRA_PASSENGERS_RATE = .095; // 9.5%
       const int BASE_HOURS_LIMIT = 24;
       const double EXTRA_HOURS_RATE = 12.0; // $12.00
       const double UPRIVER_CHARGE_RATE = 50.0; // $50.00 (per hop)
       const double DOWNRIVER_DISCOUNT_RATE = 30.0; // $30.00 (per hop)
       const double TAX_RATE = .0605; // 6.05%
       
       int hoursSpan;
       int daysSpan;
       int hoursTotal;
       int hops;
       bool isUpriver;
       
       DateTime preparedDate = new DateTime();
       DateTime departDateTime; 
       DateTime arriveDateTime;
       short passengersTotal;
       
       const byte PM_NEEDS_LICENSE = 21; // 24-hour time for 9:00 pm
       const byte AM_NEEDS_LICENSE = 7; // 24-hour time for 7:00 am;
       const byte ENGINE_NEEDS_LICENSE = 3;
       
       const byte FIELD_SIZE = 28;
       
       Quote newQuote = new Quote();
       
       public RentalQuoteForm()
       {
          InitializeComponent();
       }


       private void RentalQuoteForm_Load(object sender, EventArgs e)
       {
           departTimeComboBox.SelectedIndex = 8;
           arriveTimeComboBox.SelectedIndex = departTimeComboBox.SelectedIndex;

           engineLevelsListBox.SelectedIndex = 0;
           taxesTagLbl.Text = "Taxes at " + (TAX_RATE).ToString("p") + ":";
       }

        private void departDateDateTimePicker_ValueChanged(object sender, EventArgs e)
        {
            if (departDateDateTimePicker.Value < DateTime.Now)
                MessageBox.Show("       Invalid Departure Date.\nDeparture date must be later than\nor equal to the current date.");
            else
                CheckForLicenseNeed();
        }

        private void departTimeComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            CheckForLicenseNeed();
        }

        private void arriveDateDateTimePicker_ValueChanged(object sender, EventArgs e)
        {
            if (arriveDateDateTimePicker.Value < DateTime.Now)
            {
                MessageBox.Show("       Invalid Arrival Date.\nArrival date must be later than\nor equal to the current date.");
                arriveDateDateTimePicker.Value = departDateDateTimePicker.Value;
            }
            else
                CheckForLicenseNeed();
        }

        private void arriveTimeComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            CheckForLicenseNeed();
        }

        private void engineLevelsListBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            CheckForLicenseNeed();
        }


        private void CheckForLicenseNeed()
        {
            if (departTimeComboBox.SelectedIndex >= PM_NEEDS_LICENSE || 
                departTimeComboBox.SelectedIndex <= AM_NEEDS_LICENSE ||
                arriveTimeComboBox.SelectedIndex >= PM_NEEDS_LICENSE || 
                arriveTimeComboBox.SelectedIndex <= AM_NEEDS_LICENSE ||
                engineLevelsListBox.SelectedIndex >= 3
                )
            {
                warningLbl.Visible = true;
            }
            else
                warningLbl.Visible = false;
        }


        #region Passengers Radio Buttons Methods
        private void passengersRadioButton1_CheckedChanged(object sender, EventArgs e)
        {
            passengersTotal = 1;
        }

        private void passengersRadioButton2_CheckedChanged(object sender, EventArgs e)
        {
            passengersTotal = 2;
        }

        private void passengersRadioButton3_CheckedChanged(object sender, EventArgs e)
        {
            passengersTotal = 3;
        }

        private void passengersRadioButton4_CheckedChanged(object sender, EventArgs e)
        {
            passengersTotal = 4;
        }

        private void passengersRadioButton5_CheckedChanged(object sender, EventArgs e)
        {
            passengersTotal = 5;
        }

        private void passengersRadioButton6_CheckedChanged(object sender, EventArgs e)
        {
            passengersTotal = 6;
        }
        #endregion


        private void calculateQuoteBtn_Click(object sender, EventArgs e)
        {
            if (departTownComboBox.SelectedItem == null)
                MessageBox.Show("Please select a town for departure.");
            else if (arriveTownComboBox.SelectedItem == null)
                MessageBox.Show("Please select a town for arrival.");
            else
            {
                int year;
                int month;
                int day;
                int hour;

                year = departDateDateTimePicker.Value.Year;
                month = departDateDateTimePicker.Value.Month;
                day = departDateDateTimePicker.Value.Day;
                hour = departTimeComboBox.SelectedIndex;
                departDateTime = new DateTime(year, month, day, hour, 00, 00);

                year = arriveDateDateTimePicker.Value.Year;
                month = arriveDateDateTimePicker.Value.Month;
                day = arriveDateDateTimePicker.Value.Day;
                hour = arriveTimeComboBox.SelectedIndex;
                arriveDateTime = new DateTime(year, month, day, hour, 00, 00);

                TimeSpan timeSpan = arriveDateTime - departDateTime;
                hoursSpan = timeSpan.Hours;
                daysSpan = timeSpan.Days;

                hoursTotal = hoursSpan + daysSpan * 24;

                if (hoursTotal < 1)
                    MessageBox.Show("        Invalid Arrival date or time.\nThe Arrival date and time must be later\nthan the Departure date and time.");
                else if (departDateTime < DateTime.Now)
                    MessageBox.Show("        Departure date or time is invalid.\nThe Departure date and time must be \nlater than the current date and time.");
                else
                {
                    preparedDate = DateTime.Now;

                    PopulateQuote();  // populate the quote instance for passing back to the resevation system.

                    DisplayQuote();
                }
            }
        }


        private void PopulateQuote()
        {
            newQuote.PreparedDate = preparedDate;

            newQuote.BasePrice = BASE_PRICE;

            newQuote.DepartTown = departTownComboBox.SelectedItem.ToString();
            newQuote.DepartDateTime = departDateTime;

            newQuote.ArriveTown = arriveTownComboBox.SelectedItem.ToString();
            newQuote.ArriveDateTime = arriveDateTime;

            newQuote.TotalRentalHours = hoursTotal;

            newQuote.SubTotal = newQuote.BasePrice;   // Price components (if expressed in percentage, calculate based on the RUNNING total)    

            newQuote.EngineIndex = (byte)engineLevelsListBox.SelectedIndex;
            newQuote.EngineLevel = engineLevelsListBox.SelectedItem.ToString();
            newQuote.EngineUpgradeCharge = (ENGINE_UPGRADE_RATE * newQuote.EngineIndex) * newQuote.SubTotal;
            newQuote.SubTotal += newQuote.EngineUpgradeCharge;

            if (newQuote.TotalRentalHours > BASE_HOURS_LIMIT)
                newQuote.ExtendedHoursCharge = (newQuote.TotalRentalHours - BASE_HOURS_LIMIT) * EXTRA_HOURS_RATE;
            else
                newQuote.ExtendedHoursCharge = 0;
            newQuote.SubTotal += newQuote.ExtendedHoursCharge;

            newQuote.PassengersTotal = passengersTotal;
            if (passengersTotal > BASE_PASSENGERS_LIMIT)
                newQuote.ExtraPassengersCharge = ((passengersTotal - BASE_PASSENGERS_LIMIT) * EXTRA_PASSENGERS_RATE) * newQuote.SubTotal;
            else
                newQuote.ExtraPassengersCharge = 0;
            newQuote.SubTotal += newQuote.ExtraPassengersCharge;

            SetIsUpriver();
            hops = Math.Abs(departTownComboBox.SelectedIndex - arriveTownComboBox.SelectedIndex);
            if (hops == 0)
            {
                newQuote.UpstreamCharge = 0;
                newQuote.DownstreamDiscount = 0;
            }
            else if (isUpriver)
            {
                newQuote.UpstreamCharge = hops * UPRIVER_CHARGE_RATE;
                newQuote.DownstreamDiscount = 0;
            }
            else
            {
                newQuote.UpstreamCharge = 0;
                newQuote.DownstreamDiscount = hops * DOWNRIVER_DISCOUNT_RATE;
            }
            newQuote.SubTotal += newQuote.UpstreamCharge;
            newQuote.SubTotal -= newQuote.DownstreamDiscount;

            newQuote.TaxRate = TAX_RATE;
            newQuote.Tax = newQuote.SubTotal * newQuote.TaxRate;
            newQuote.GrandTotal = newQuote.SubTotal + newQuote.Tax;

            newQuote.LicenseNeeded = warningLbl.Visible;
        }

        private void SetIsUpriver()
        {
            if (departTownComboBox.SelectedIndex < arriveTownComboBox.SelectedIndex)
                isUpriver = false;
            else
                isUpriver = true;
        }


        private void DisplayQuote()
        {
            datePreparedLbl.Text = String.Format("(Prepared on {0}.)", newQuote.PreparedDate.ToString("MMMM d', 'yyyy' at 'hh':00 'tt"));
            departOutputLbl.Text = String.Format("{0} on {1} at {2}.", 
                                                    newQuote.DepartTown, 
                                                    newQuote.DepartDateTime.ToString("MMMM d', 'yyyy"),
                                                    newQuote.DepartDateTime.ToString("hh':00 'tt"));
            arriveOutputLbl.Text = String.Format("{0} on {1} at {2}.",
                                                    newQuote.ArriveTown,
                                                    newQuote.ArriveDateTime.ToString("MMMM d', 'yyyy"),
                                                    newQuote.ArriveDateTime.ToString("hh':00 'tt"));
            totalRentalHoursLbl.Text = "For a total of " + newQuote.TotalRentalHours + " hours.";

            basePriceOutputLbl.Text = newQuote.BasePrice.ToString("c2");
            ExtendedHoursOutputLbl.Text = newQuote.ExtendedHoursCharge.ToString("c2");
            ExtraPassengersOutputLbl.Text = newQuote.ExtraPassengersCharge.ToString("c2");
            upstreamChargeOutputLbl.Text = newQuote.UpstreamCharge.ToString("c2");
            engineLevelOutputLbl.Text = newQuote.EngineUpgradeCharge.ToString("c2");
            downstreamDiscountOutputLbl.Text = newQuote.DownstreamDiscount.ToString("c2");
            TaxOutputLbl.Text = newQuote.Tax.ToString("c2");
            grandTotalOutputLbl.Text = newQuote.GrandTotal.ToString("c2");

            warningDisplayLbl.Visible = warningLbl.Visible;
        }
    } // end RentalQuoteForm class



    //
    //
    /*
	create a class from which to instantiate an object that holds all the quote data and can be passed to the reservation system that is using this application (from Asssigment Agenda, paragraph 1).
    */
    //
    class Quote
    {
        private DateTime preparedDate { get; set; }
        public string DepartTown { get; set; }
        private DateTime departDateTime;

        public string ArriveTown { get; set; }
        private DateTime arriveDateTime = new DateTime();

        public int TotalRentalHours { get; set; }

        public double BasePrice { get; set; }

        public double ExtendedHoursCharge { get; set;}

        public short PassengersTotal { get; set; }
        public double ExtraPassengersCharge { get; set; }

        public byte EngineIndex { get; set; } 
        public string EngineLevel { get; set; }
        public double EngineUpgradeCharge {get; set;}

        public double UpstreamCharge { get; set; }
        public double DownstreamDiscount { get; set; }

        public bool LicenseNeeded { get; set; }

        public double SubTotal { get; set; }
        public double TaxRate { get; set; }
        public double Tax { get; set; }
        public double GrandTotal { get; set; }

        public DateTime PreparedDate
        {
            get { return preparedDate; }

            set
            {
                preparedDate = value;
            }
        }

        public DateTime DepartDateTime
        {
            get { return departDateTime; }
 
            set
            {
                departDateTime = value;
            }
        }

        public DateTime ArriveDateTime
        {
            get { return arriveDateTime; } 
            
            set
            {
                arriveDateTime = value;
            }
        }

        public Quote()
        {
            // set defaults for possible unused variables
            ExtendedHoursCharge = 0;
            ExtraPassengersCharge = 0;
            UpstreamCharge = 0;
            DownstreamDiscount = 0;
            EngineUpgradeCharge = 0;

        }
    } // end Quote class
} // end HouseboatRentalQuote namespace