What's This

This .sln is a homework about Guide To The Galaxy!! See also:GuideToTheGalaxy

Where Is The Source

All of source codes already push to GitHub: https://github.com/denghejun/MerchantsGuideToTheGalaxy.git.

How To Run

Only 2 Projects Can Run By Press F5 Directly in VisualStudio IDE

1. GuideConsole

This is a Windows Console Application with 3 menus, you can run it step by step.

1.Input Data From File
2.Input Data From Console
3.Exit

2. GuideToTheGalaxy.Tests

Contains the unit test codes of Biz logic objects.

• It was a test console app by design.
• Please press F5 to run all unit tests in VisualStudio IDE or double click GuideToTheGalaxy.Tests.exe directly.

Design Tips

RomanNumerals

Contains all Roman Codes and Rules. And has a RomanCaculator, it was used to calculate a serial RomanNumbers, like below:

 var calculator = new RomanCalculator();
 calculator.Add(RomanNumber.I);
 calculator.Add(RomanNumber.X);
 var value = calculator.Value; //value will be IX = 9

GuideToTheGalaxy.Commands

Contains many micro directives which can execute its command to solve the user input.

• Each static method of command as a public API to communicate with other command.
• The purpose of directive & command was separate Action from Data.
• The inherit of command means which directive will be supported by current command.
• The inherit of directive means which Command can be executed by current directive.

To define a new command and directive like below：

    public class UnknownCommand : Command<UnknownCommandDirective>
    {
        public UnknownCommand(UnknownCommandDirective directive) : base(directive)
        {

        }

        public override object Execute()
        {
            return this._directive.Message;
        }
    }

    public class UnknownCommandDirective : CommandDirective<UnknownCommand>
    {
        public UnknownCommandDirective(string content) : base(content)
        {
        }

        public string Message
        {
            get
            {
                return "I have no idea what you are talking about";
            }
        }

        public override UnknownCommand Command
        {
            get
            {
                return new UnknownCommand(this);
            }
        }
    }

And you can use directive like below:

var result = DirectiveProxy<UnknownCommandDirective>.Create("whatever you want").Command.Execute();

one of test samples like below:

DirectiveProxy<AliasCommandDirective>.Create("glob is I").Command.Execute();
DirectiveProxy<AliasCommandDirective>.Create("prok is V").Command.Execute();
DirectiveProxy<AliasCommandDirective>.Create("pish is X").Command.Execute();
DirectiveProxy<AliasCommandDirective>.Create("tegj is L").Command.Execute();
DirectiveProxy<UnitPriceCommandDirective>.Create("glob glob Silver is 34 Credits").Command.Execute();
var response = DirectiveProxy<HowManyCommandDirective>.Create("how many Credits is glob prok Silver ?").Command.Execute();

Assert.That(response?.ToString(), Is.EqualTo("glob prok Silver is 68 Credits"));