using System;
namespace PracTest5
{
    class Pay
    {
        static void Main()
        {
            // Define and initialise all variables
            string full_name = "";
            string street_number = "";
            string address = "";
            string state = "";
            string post_code = "";
            string phone_number = "";
            float hours_worked = 0.0F;
            int salary = 0;
            float gross_pay = 0.0F;
            float tax = 0.0F;
            float net_pay = 0.0F;
            float pay_rate = 0.0F;
            float tax_rate = 0.0F;
            // stores the user response for the menu.  
            // Must be initialised to not "x" to ensure 
            // the menu is displayed atleast once
            string response = "";
            // Tempory variable used to store ReadLine value
            string vtemp = "";
            bool parseAttempt = true;

            // The following tewo variables are used as part of the post code validation routine.
            string first_character;
            bool valid_post_code;

            // Beginning of main menu loop
            while (response != "x" && response != "X") // Check for both upper and lower case
            {
                // Clear the ascreen then display the menu
                Console.Clear();
                Console.WriteLine("------- Menu ------------");
                Console.WriteLine("Get a persons details (p)");
                Console.WriteLine("Get the Salary        (s)");
                Console.WriteLine("Calculate and display (d)");
                Console.WriteLine("Exit                  (x)");
                Console.Write("\nEnter your choice  : > ");

                // Get the response from the user
                response = Console.ReadLine();

                // Switch the response and execute the appropriate code
                switch (response)
                {
                    // Get a persons details (p)
                    case "p":
                    case "P":
                        // initialise variables
                        full_name = "";
                        street_number = "";
                        address = "";
                        state = "";
                        post_code = "";
                        phone_number = "";
                        hours_worked = 0.0F;

                        // Get data from user
                        do
                        {
                            Console.Write("Enter your Full Name: > ");
                            full_name = Console.ReadLine();
                            if (full_name == "")
                                Console.WriteLine("\r\nMust not be left blank");
                        } while (full_name == "");

                        do
                        {
                            Console.Write("Enter your Street number: > ");
                            street_number = Console.ReadLine();
                            if (street_number == "")
                                Console.WriteLine("\r\nMust not be left blank");
                        } while (street_number == "");

                        
                        do
                        {
                            Console.Write("Enter your Street address: > ");
                            address = Console.ReadLine();
                            if (address == "")
                                Console.WriteLine("\r\nMust not be left blank");
                        } while (address == "");
                        
                        do
                        {
                            Console.Write("Enter your State: > ");
                            state = Console.ReadLine();
                            if (state == "")
                                Console.WriteLine("\r\nMust not be left blank");
                        } while (state == "");
                        
                        /*do
                        {
                            Console.Write("Enter your Post Code: > ");
                            post_code = Console.ReadLine();
                            if (post_code == "")
                                Console.WriteLine("\r\nMust not be left blank");
                        } while (post_code == "");*/

                        // The following code for validating the post code is an example of a reasonably thorough approach
                        // as it checks length, and allowable characters.
                        do
                        {
                            Console.Write("Enter your Post Code: > ");
                            post_code = Console.ReadLine();

                            // Postcode validation takes a few steps
                            // Begin by assuming that the postcode is valid and then perform tests to prove otherwise
                            valid_post_code = true;

                            // Check the postcode length first
                            // It must be either 4 characters or may be left blank if the user
                            // does not know the postcode.
                            if (post_code.Length != 4 && post_code.Length != 0)
                            {
                                valid_post_code = false;
                            }
                            else
                            {
                                // Only if the user has a entered a postcode of valid length then we must do other tests
                                if (post_code.Length == 4)
                                {
                                    // First check that the first character is one of 0, 2, 3, 4, 5, 6, 7
                                    // Anything else is not valid
                                    first_character = post_code.Substring(0, 1);
                                    switch (first_character)
                                    {
                                        case "0":
                                        case "2":
                                        case "3":
                                        case "4":
                                        case "5":
                                        case "6":
                                        case "7":
                                            // Passed the fist test so assume that it is valid for now and then run another test
                                            valid_post_code = true;
                                            break;
                                        default:
                                            valid_post_code = false;
                                            break;
                                    }

                                    // Now make sure that the rest of the characters are valid digits
                                    // One way is to convert each part of the string to characters and use the .IsDigit() method
                                    if (valid_post_code)
                                    {
                                        if (!Char.IsDigit(post_code[1]) || !Char.IsDigit(post_code[2]) || !Char.IsDigit(post_code[3]))
                                        {
                                            valid_post_code = false;
                                        }
                                    }
                                }
                            }

                            // Now we know if it is valid or not so make a final decision
                            if (!valid_post_code)
                            {
                                Console.WriteLine(" ** ERROR. Not a valid Australian Post Code.");
                            }
                        } while (valid_post_code == false);




                        Console.Write("Enter your Phone number: > ");
                        phone_number = Console.ReadLine();

                        // Must reset parseAttempt as to get here means it had to be true
                        parseAttempt = false;

                        // Get total hours and convert to a float
                        while (parseAttempt == false)
                        {
                            Console.Write("Enter Total Hours Worked: > ");
                            vtemp = Console.ReadLine();
                            parseAttempt = float.TryParse(vtemp, out hours_worked);
                            if (parseAttempt == false)
                            {
                                Console.WriteLine("Error: Hours Worked must be a valid numeric value (decimal)");
                            }
                            else
                            {
                                // Check data is logical
                                if (hours_worked <= 0)
                                {
                                    Console.WriteLine("Error: Hours Worked must be greater than 0");
                                    parseAttempt = false;
                                }
                            }
                        }
                        break;
                    // Get the Salary (s)
                    case "s":
                    case "S":
                        // check person data has been entered.
                        if (hours_worked > 0)
                        {
                            // initialise variables                        
                            salary = 0;
                            pay_rate = 0.0F;
                            tax_rate = 0.0F;
                            // Must reset parseAttempt as to get here means it had to be true
                            parseAttempt = false;
                            // Get salary and convert to a int
                            while (parseAttempt == false)
                            {
                                Console.Write("Enter Salary: (Whole numbers only) > ");
                                vtemp = Console.ReadLine();
                                parseAttempt = int.TryParse(vtemp, out salary);
                                if (parseAttempt == false)
                                {
                                    Console.WriteLine("Error: Salary must be a valid numeric value (whole number)");
                                }
                                else
                                {
                                    // Check data is logical
                                    if (salary <= 0)
                                    {
                                        Console.WriteLine("Error: Salary must be greater than 0");
                                        parseAttempt = false;
                                    }
                                }
                            }
                            //  Determine the users Tax rate and Pay rate by using the salary entered as follows :
                            //* Annual Salary $0 - $16,500 : Tax rate is 11.32%, Pay rate is $8.68 per hour
                            if (salary >= 0 && salary <= 16500)
                            {
                                tax_rate = 11.32F;
                                pay_rate = 8.68F;
                            }
                            //* Annual Salary $16,501 - $19,500 : Tax rate is 15.14%, Pay rate is $10.26 per hour
                            else if (salary >= 16501 && salary <= 19500)
                            {
                                tax_rate = 15.14F;
                                pay_rate = 10.26F;
                            }
                            //* Annual Salary $19,501 - $29,500 : Tax rate is 22.65%, Pay rate is $15.54 per hour
                            else if (salary >= 19501 && salary <= 29500)
                            {
                                tax_rate = 22.65F;
                                pay_rate = 15.54F;
                            }
                            //* Annual Salary $29,501 - $33,500 : Tax rate is 27.12%, Pay rate is $17.63 per hour
                            else if (salary >= 29501 && salary <= 33500)
                            {
                                tax_rate = 27.12F;
                                pay_rate = 17.63F;
                            }
                            //* Annual Salary $33,501 - $39,500 : Tax rate is 30.92%, Pay rate is $20.79 per hour
                            else if (salary >= 33501 && salary <= 39500)
                            {
                                tax_rate = 30.92F;
                                pay_rate = 20.79F;
                            }
                            //* Annual Salary $39,501 - $59,500 : Tax rate is 35.72%, Pay rate is $31.31 per hour
                            else if (salary >= 39501 && salary <= 59500)
                            {
                                tax_rate = 35.72F;
                                pay_rate = 31.31F;
                            }
                            //* Annual Salary $59,501 - $89,500 : Tax rate is 40.72%, Pay rate is $47.12 per hour
                            else if (salary >= 59501 && salary <= 89500)
                            {
                                tax_rate = 40.72F;
                                pay_rate = 47.12F;
                            }
                            //* Annual Salary greater than $89,500 : Tax rate is 50.52%, Pay rate is $55.67 per hour
                            else
                            {
                                tax_rate = 50.52F;
                                pay_rate = 55.67F;
                            }
                        }
                        else
                        {
                            Console.WriteLine("Cannot calculate as person data has not been entered.");
                            Console.WriteLine("Press ENTER to continue");
                            Console.ReadLine();
                        }
                        break;
                    // Calculate and display (d)
                    case "d":
                    case "D":
                        // Check output can be displayed by checking the pay rate is set.
                        if (pay_rate > 0 && full_name != "")
                        {
                            // initialise variables                        
                            gross_pay = 0.0F;
                            tax = 0.0F;
                            net_pay = 0.0F;
                            // Calculate gross pay
                            gross_pay = hours_worked * pay_rate;
                            // Calculate total tax
                            tax = gross_pay * (tax_rate / 100);
                            // Calculate net pay
                            net_pay = gross_pay - tax;

                            // Output the Person details
                            Console.WriteLine("\nPay slip");
                            Console.WriteLine("-------------------------------------");
                            Console.WriteLine("{0, 20}{1, -5}", "Person Details : ", full_name);
                            Console.WriteLine("{0, 20}{1} {2}, {3}, {4}", " ", street_number, address, state, post_code);
                            Console.WriteLine("{0, 20}{1, -5}", " ", phone_number);
                            Console.WriteLine("{0, 20}${1, -5}", "Annual Salary : ", salary.ToString("N0"));
                            Console.WriteLine("{0, 20}{1} hours", "Hours Worked : ", hours_worked.ToString("F1"));
                            Console.WriteLine("");
                            // Output the Pay details
                            Console.WriteLine("{0, 20}{1, 5}", "Pay Rate : ", pay_rate.ToString("C2"));
                            Console.WriteLine("{0, 20}{1, 4}%", "Tax Rate : ", tax_rate.ToString("F2"));
                            Console.WriteLine(" ");
                            Console.WriteLine("{0, 20}{1, 8}", "Gross Pay : ", gross_pay.ToString("C2"));
                            Console.WriteLine("{0, 20}{1, 8}", "Tax : ", tax.ToString("C2"));
                            Console.WriteLine("{0, 20}{1, 8}", "Net Pay : ", net_pay.ToString("C2"));
                            Console.WriteLine("-------------------------------------");
                        }
                        else
                        {
                            Console.WriteLine("Cannot output as the pay and tax rate have not been set.");
                        }
                        Console.WriteLine("Please press ENTER to continue");
                        Console.ReadLine();
                        break;
                    case "x":
                    case "X":
                        Console.WriteLine("Press ENTER to exit.");
                        Console.ReadLine();
                        break;
                    // Unkown selection
                    default:
                        Console.WriteLine("Unknown menu selection.");
                        break;

                }
            }
        }
    }
}