sera-slackbot/Bot/Library/BotCommandFactory.cs

using System;
using sera_slackbot.Commands;

namespace sera_slackbot.Library
{
    public class BotCommandFactory
    {
        private JsonFileReader reader;
        private JsonFileSaver saver;

        public BotCommandFactory(JsonFileReader reader, JsonFileSaver saver)
        {
            this.reader = reader;
            this.saver = saver;
        }

        public IBotCommand CreateCommand(string commandString)
        {
            var typeString = "sera_slackbot.Commands." + commandString + "BotCommand";
            try
            {
                return (IBotCommand)Activator.CreateInstance(Type.GetType(typeString), this.reader, this.saver);
            }
            catch (Exception)
            {
                return new InvalidBotCommand(commandString);
            }
        }

        public IBotInteraction CreateInteraction(string interactionString)
        {
            var commandString = interactionString;
            switch (interactionString)
            {
                case "pointingpoker":
                    commandString = "PointingPoker";
                    break;
            }
            var typeString = "sera_slackbot.Commands." + commandString + "BotCommand";
            try
            {
                return (IBotInteraction)Activator.CreateInstance(Type.GetType(typeString), this.reader, this.saver);
            }
            catch (Exception)
            {
                return new InvalidBotCommand(commandString);
            }
        }

    }
}