SurveyBuilder Refactored | C# Online Compiler

SurveyBuilder Refactored by hardsky

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;

namespace SurveyBuilder
{

	public class Program
	{
		static public void Main()
		{
			var survey = new Survey("How much are you Programer?")
				.AddQuestion(new SinglePicklistQuestion
				{
					Label = "Do you like programming?",
					Options = new List<PicklistOption>
					{
						new PicklistOption {Text = "Yes", Points = 20},
						new PicklistOption {Text = "No", Points = 10},
					}
				})
				.AddQuestion(new MultiPicklistQuestion
				{
					Label = "What programming languages do u know?",
					Options = new List<PicklistOption>
					{
						new PicklistOption {Text = "C#", Points = 10},
						new PicklistOption {Text = "Ada", Points = 10},
						new PicklistOption {Text = "Pascal", Points = 10}
					}
				})
				.AddQuestion(new SinglePicklistQuestion
				{
					Label = "How much Open Source project, where did you take part?",
					Options = new List<PicklistOption>
					{
						new PicklistOption {Text = "0", Points = 10},
						new PicklistOption {Text = "1 - 2", Points = 20},
						new PicklistOption {Text = "3 - 5", Points = 30},
						new PicklistOption {Text = "more than 5", Points = 40},
					}
				});

			Console.WriteLine("Hello! Let's determine how much you are programer.");
			var session = new SurveySession
			{
				Survey = survey,
				Answers = new List<Answer>()
			};

			foreach (var question in survey.Questions)
			{
				var answer = question.Ask();
				session.Answers.Add(answer);
			}

			session.Score = survey.GetScore(session.Answers);

			Console.WriteLine("Thank you, for participating in our survey!");
			Console.WriteLine("Your score is {0}.", session.Score);
		}
	}

	public abstract class Question
	{
		public string Label { get; set; }

		public Answer Ask()
		{
			PrintQuestion();

			while (true)
			{
				var input = Console.ReadLine();
				string errorMessage;
				if (!ValidateInput(input, out errorMessage))
				{
					Console.WriteLine(errorMessage);
					Console.WriteLine("Please, correct your input.");
					continue;
				}

				return CreateAnswer(input);
			}
		}

		protected virtual void PrintQuestion()
		{
			Console.WriteLine(Label);
		}


		protected abstract bool ValidateInput(string input, out string errorMessage);
		protected abstract Answer CreateAnswer(string validInput);
	}

	public abstract class Answer
	{
		public Question Question { get; set; }
		public int Points { get; set; }
	}

	public class TextQuestion : Question
	{
		private const int MaxUserInputTextLength = 128;

		protected override bool ValidateInput(string input, out string errorMessage)
		{
			if (input.Length > MaxUserInputTextLength)
			{
				errorMessage = string.Format("Input text is too long. Expected {0} or less characters.", MaxUserInputTextLength);
				return false;
			}

			errorMessage = null;
			return true;
		}

		protected override Answer CreateAnswer(string validInput)
		{
			return new TextAnswer { Text = validInput, Question = this };
		}
	}

	public class TextAnswer : Answer
	{
		public string Text { get; set; }
	}

	public class NumberQuestion : Question
	{
		private const int IntegerMaxTextLength = 10;

		protected override bool ValidateInput(string input, out string errorMessage)
		{
			if (input.Length > IntegerMaxTextLength)
			{
				errorMessage = string.Format("Input text is too long. Expected {0} or less characters.", IntegerMaxTextLength);
				return false;
			}

			int value;
			if (!int.TryParse(input, out value))
			{
				errorMessage = "Incorrect format for number.";
				return false;
			}

			errorMessage = null;
			return true;
		}

		protected override Answer CreateAnswer(string validInput)
		{
			return new NumberAnswer { Number = int.Parse(validInput), Question = this };
		}
	}

	public class NumberAnswer : Answer
	{
		public int Number { get; set; }
	}

	public class DateQuestion : Question
	{
		const string DateFormat = "dd/mm/yyyy";
		private const string ParseFormat = "dd/MM/yyyy";

		protected override void PrintQuestion()
		{
			Console.WriteLine(Label);
			Console.WriteLine("Please, input data in following format: \"{0}\"", DateFormat);
		}

		protected override bool ValidateInput(string input, out string errorMessage)
		{
			if (input.Length > DateFormat.Length)
			{
				errorMessage = string.Format("Input text is too long. Expected input in format \"{0}\".", DateFormat);
				return false;
			}

			DateTime date;
			if (!DateTime.TryParseExact(input, ParseFormat, CultureInfo.InvariantCulture, DateTimeStyles.None, out date))
			{
				errorMessage = "Incorrect format for date.";
				return false;
			}

			errorMessage = null;
			return true;
		}

		protected override Answer CreateAnswer(string validInput)
		{
			return new DateAnswer { Date = DateTime.ParseExact(validInput, ParseFormat, CultureInfo.InvariantCulture), Question = this };
		}
	}

	public class DateAnswer : Answer
	{
		public DateTime Date { get; set; }
	}

	public abstract class PickListQuestion : Question
	{
		public List<PicklistOption> Options { get; set; }

		protected override void PrintQuestion()
		{
			Console.WriteLine(Label);

			int optionNumber = 1;
			foreach (var choice in Options)
			{
				Console.WriteLine("[{0}] {1}", optionNumber, choice.Text);
				optionNumber++;
			}
		}
	}

	public class MultiPicklistQuestion : PickListQuestion
	{
		protected override void PrintQuestion()
		{
			base.PrintQuestion();

			Console.Write("Please, select option numbers.");
			Console.WriteLine("Input numbers in format \"<num1>,<num2>,<num3>,...\"");
			Console.WriteLine("For example: 1, 3, 4");

		}

		protected override bool ValidateInput(string input, out string errorMessage)
		{
			var optionNumbers = input.Split(',');

			if (optionNumbers.Length > Options.Count)
			{
				errorMessage = "You select more options, than available.";
				return false;
			}
			var options = new List<int>();
			foreach (var textOption in optionNumbers)
			{
				int optionNumber;
				if (!int.TryParse(textOption, out optionNumber))
				{
					errorMessage = "Incorrect format for option number.";
					return false;
				}
				options.Add(optionNumber);
			}

			errorMessage = null;
			return true;
		}

		protected override Answer CreateAnswer(string validInput)
		{
			var optionNumbers = validInput.Split(',').Select(num => int.Parse(num.Trim())).ToList();
			var selectedOptions = optionNumbers.Select(choiceNumber => Options[choiceNumber - 1]).ToList();

			return new MultiPicklistAnswer { Options = selectedOptions, Question = this, Points = selectedOptions.Sum(op=>op.Points)};
		}
	}

	public class PicklistOption
	{
		public string Text { get; set; }

		public int Points { get; set; }
	}

	public class MultiPicklistAnswer : Answer
	{
		public List<PicklistOption> Options { get; set; }
	}

	public class SinglePicklistQuestion : PickListQuestion
	{
		protected override void PrintQuestion()
		{
			base.PrintQuestion();

			Console.WriteLine("Please, select one option number.");
		}

		protected override bool ValidateInput(string input, out string errorMessage)
		{
			int number;
			if (!int.TryParse(input, out number))
			{
				errorMessage = "Incorrect format for option number.";
				return false;
			}

			if (number <= 0)
			{
				errorMessage = "Option number should be 1 or greater.";
				return false;
			}

			if (number > Options.Count)
			{
				errorMessage = "Option number should be {0} or less.";
				return false;
			}

			errorMessage = null;
			return true;
		}

		protected override Answer CreateAnswer(string validInput)
		{
			var selectedOption = Options[int.Parse(validInput) - 1];
			return new SinglePicklistAnswer {PicklistOption = selectedOption, Question = this, Points = selectedOption.Points};
		}
	}

	public class SinglePicklistAnswer : Answer
	{
		public PicklistOption PicklistOption { get; set; }
	}

	public class Survey
	{
		public Survey(string name)
		{
			Name = name;
			Questions = new List<Question>();
		}

		public string Name { get; set; }
		public List<Question> Questions { get; set; }

		public Survey AddQuestion(Question question)
		{
			Questions.Add(question);
			return this;
		}

		public int GetScore(List<Answer> answers)
		{
			return answers.Sum(a => a.Points);
		}
	}

	public class SurveySession
	{
		public Survey Survey { get; set; }

		public List<Answer> Answers { get; set; }

		public int Score { get; set; }
	}
}

​x
 
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
​
namespace SurveyBuilder
{
​
    public class Program
    {
        static public void Main()
        {
            var survey = new Survey("How much are you Programer?")
                .AddQuestion(new SinglePicklistQuestion
                {
                    Label = "Do you like programming?",
                    Options = new List<PicklistOption>
                    {
                        new PicklistOption {Text = "Yes", Points = 20},
                        new PicklistOption {Text = "No", Points = 10},
                    }
                })
                .AddQuestion(new MultiPicklistQuestion
                {
                    Label = "What programming languages do u know?",
                    Options = new List<PicklistOption>
                    {
                        new PicklistOption {Text = "C#", Points = 10},
                        new PicklistOption {Text = "Ada", Points = 10},
                        new PicklistOption {Text = "Pascal", Points = 10}
                    }
                })
                .AddQuestion(new SinglePicklistQuestion
                {
                    Label = "How much Open Source project, where did you take part?",
                    Options = new List<PicklistOption>
                    {
                        new PicklistOption {Text = "0", Points = 10},
                        new PicklistOption {Text = "1 - 2", Points = 20},
                        new PicklistOption {Text = "3 - 5", Points = 30},
                        new PicklistOption {Text = "more than 5", Points = 40},
                    }
                });
​
            Console.WriteLine("Hello! Let's determine how much you are programer.");
            var session = new SurveySession
            {
                Survey = survey,
                Answers = new List<Answer>()
            };
​
            foreach (var question in survey.Questions)
            {
                var answer = question.Ask();
                session.Answers.Add(answer);
            }
​
            session.Score = survey.GetScore(session.Answers);
​
            Console.WriteLine("Thank you, for participating in our survey!");
            Console.WriteLine("Your score is {0}.", session.Score);
        }
    }
​
    public abstract class Question
    {
        public string Label { get; set; }
​
        public Answer Ask()
        {
            PrintQuestion();
​
            while (true)
            {
                var input = Console.ReadLine();
                string errorMessage;
                if (!ValidateInput(input, out errorMessage))
                {
                    Console.WriteLine(errorMessage);
                    Console.WriteLine("Please, correct your input.");
                    continue;
                }
​
                return CreateAnswer(input);
            }
        }
​
        protected virtual void PrintQuestion()
        {
            Console.WriteLine(Label);
        }
​
​
        protected abstract bool ValidateInput(string input, out string errorMessage);
        protected abstract Answer CreateAnswer(string validInput);
    }
​
    public abstract class Answer
    {
        public Question Question { get; set; }
        public int Points { get; set; }
    }
​
    public class TextQuestion : Question
    {
        private const int MaxUserInputTextLength = 128;
​
        protected override bool ValidateInput(string input, out string errorMessage)
        {
            if (input.Length > MaxUserInputTextLength)
            {
                errorMessage = string.Format("Input text is too long. Expected {0} or less characters.", MaxUserInputTextLength);
                return false;
            }
​
            errorMessage = null;
            return true;
        }
​
        protected override Answer CreateAnswer(string validInput)
        {
            return new TextAnswer { Text = validInput, Question = this };
        }
    }
​
    public class TextAnswer : Answer
    {
        public string Text { get; set; }
    }
​
    public class NumberQuestion : Question
    {
        private const int IntegerMaxTextLength = 10;
​
        protected override bool ValidateInput(string input, out string errorMessage)
        {
            if (input.Length > IntegerMaxTextLength)
            {
                errorMessage = string.Format("Input text is too long. Expected {0} or less characters.", IntegerMaxTextLength);
                return false;
            }
​
            int value;
            if (!int.TryParse(input, out value))
            {
                errorMessage = "Incorrect format for number.";
                return false;
            }
​
            errorMessage = null;
            return true;
        }
​
        protected override Answer CreateAnswer(string validInput)
        {
            return new NumberAnswer { Number = int.Parse(validInput), Question = this };
        }
    }
​
    public class NumberAnswer : Answer
    {
        public int Number { get; set; }
    }
​
    public class DateQuestion : Question
    {
        const string DateFormat = "dd/mm/yyyy";
        private const string ParseFormat = "dd/MM/yyyy";
​
        protected override void PrintQuestion()
        {
            Console.WriteLine(Label);
            Console.WriteLine("Please, input data in following format: \"{0}\"", DateFormat);
        }
​
        protected override bool ValidateInput(string input, out string errorMessage)
        {
            if (input.Length > DateFormat.Length)
            {
                errorMessage = string.Format("Input text is too long. Expected input in format \"{0}\".", DateFormat);
                return false;
            }
​
            DateTime date;
            if (!DateTime.TryParseExact(input, ParseFormat, CultureInfo.InvariantCulture, DateTimeStyles.None, out date))
            {
                errorMessage = "Incorrect format for date.";
                return false;
            }
​
            errorMessage = null;
            return true;
        }
​
        protected override Answer CreateAnswer(string validInput)
        {
            return new DateAnswer { Date = DateTime.ParseExact(validInput, ParseFormat, CultureInfo.InvariantCulture), Question = this };
        }
    }
​
    public class DateAnswer : Answer
    {
        public DateTime Date { get; set; }
    }
​
    public abstract class PickListQuestion : Question
    {
        public List<PicklistOption> Options { get; set; }
​
        protected override void PrintQuestion()
        {
            Console.WriteLine(Label);
​
            int optionNumber = 1;
            foreach (var choice in Options)
            {
                Console.WriteLine("[{0}] {1}", optionNumber, choice.Text);
                optionNumber++;
            }
        }
    }
​
    public class MultiPicklistQuestion : PickListQuestion
    {
        protected override void PrintQuestion()
        {
            base.PrintQuestion();
​
            Console.Write("Please, select option numbers.");
            Console.WriteLine("Input numbers in format \"<num1>,<num2>,<num3>,...\"");
            Console.WriteLine("For example: 1, 3, 4");
​
        }
​
        protected override bool ValidateInput(string input, out string errorMessage)
        {
            var optionNumbers = input.Split(',');
​
            if (optionNumbers.Length > Options.Count)
            {
                errorMessage = "You select more options, than available.";
                return false;
            }
            var options = new List<int>();
            foreach (var textOption in optionNumbers)
            {
                int optionNumber;
                if (!int.TryParse(textOption, out optionNumber))
                {
                    errorMessage = "Incorrect format for option number.";
                    return false;
                }
                options.Add(optionNumber);
            }
​
            errorMessage = null;
            return true;
        }
​
        protected override Answer CreateAnswer(string validInput)
        {
            var optionNumbers = validInput.Split(',').Select(num => int.Parse(num.Trim())).ToList();
            var selectedOptions = optionNumbers.Select(choiceNumber => Options[choiceNumber - 1]).ToList();
​
            return new MultiPicklistAnswer { Options = selectedOptions, Question = this, Points = selectedOptions.Sum(op=>op.Points)};
        }
    }
​
    public class PicklistOption
    {
        public string Text { get; set; }
​
        public int Points { get; set; }
    }
​
    public class MultiPicklistAnswer : Answer
    {
        public List<PicklistOption> Options { get; set; }
    }
​
    public class SinglePicklistQuestion : PickListQuestion
    {
        protected override void PrintQuestion()
        {
            base.PrintQuestion();
​
            Console.WriteLine("Please, select one option number.");
        }
​
        protected override bool ValidateInput(string input, out string errorMessage)
        {
            int number;
            if (!int.TryParse(input, out number))
            {
                errorMessage = "Incorrect format for option number.";
                return false;
            }
​
            if (number <= 0)
            {
                errorMessage = "Option number should be 1 or greater.";
                return false;
            }
​
            if (number > Options.Count)
            {
                errorMessage = "Option number should be {0} or less.";
                return false;
            }
​
            errorMessage = null;
            return true;
        }
​
        protected override Answer CreateAnswer(string validInput)
        {
            var selectedOption = Options[int.Parse(validInput) - 1];
            return new SinglePicklistAnswer {PicklistOption = selectedOption, Question = this, Points = selectedOption.Points};
        }
    }
​
    public class SinglePicklistAnswer : Answer
    {
        public PicklistOption PicklistOption { get; set; }
    }
​
    public class Survey
    {
        public Survey(string name)
        {
            Name = name;
            Questions = new List<Question>();
        }
​
        public string Name { get; set; }
        public List<Question> Questions { get; set; }
​
        public Survey AddQuestion(Question question)
        {
            Questions.Add(question);
            return this;
        }
​
        public int GetScore(List<Answer> answers)
        {
            return answers.Sum(a => a.Points);
        }
    }
​
    public class SurveySession
    {
        public Survey Survey { get; set; }
​
        public List<Answer> Answers { get; set; }
​
        public int Score { get; set; }
    }
}
​

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