Refactored Commands into VerbFactory

Advanced Software Engineering/Advanced Software Engineering/Verbs/VerbFactory.cs

@@ -0,0 +1,142 @@
+using System;
+using System.CodeDom;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Windows.Forms;
+using System.Windows.Forms.VisualStyles;
+
+namespace Advanced_Software_Engineering {
+    public class VerbFactory {
+        public static Verb MakeVerb(Drawer drawer, string fullCommand) {
+
+            Dictionary<string, string[]> commandAndParameters = SettingsAndHelperFunctions.CommandAndParameterParser(fullCommand);
+
+            if (!commandAndParameters.Keys.Contains("command")) throw new Exception("There is no command to process");
+
+            string command = commandAndParameters["command"][0];
+            string[] parameters = commandAndParameters.Keys.Contains("parameters") ? commandAndParameters["parameters"] : new string[] { };
+
+            switch (command) {
+                case "move":
+                case "moveto":
+                    //Check parameters
+                    if (parameters.Length == 2) {
+                        return new MoveTo(drawer,
+                            SettingsAndHelperFunctions.ConvertToInt(parameters[0]),
+                            SettingsAndHelperFunctions.ConvertToInt(parameters[1]));
+
+                    } else throw new Exception("Command has an incorrect number of parameters");
+
+                case "drawto":
+                case "line":
+                case "lineto":
+                    //Check parameters
+                    if (parameters.Length == 2) {
+                        return new
+                            DrawTo(drawer,
+                            SettingsAndHelperFunctions.ConvertToInt(parameters[0]),
+                            SettingsAndHelperFunctions.ConvertToInt(parameters[1]));
+                    } else throw new Exception("Command has an incorrect number of parameters");
+                case "regularpolygon":
+                case "rp":
+                    //Check parameters
+                    if (parameters.Length == 2) {
+                        return new
+                            RegularPolygon(drawer,
+                            SettingsAndHelperFunctions.ConvertToInt(parameters[0]),
+                            SettingsAndHelperFunctions.ConvertToDouble(parameters[1])
+                            );
+                    } else if (parameters.Length == 3) {
+                        return new RegularPolygon(drawer,
+                            SettingsAndHelperFunctions.ConvertToInt(parameters[0]),
+                            SettingsAndHelperFunctions.ConvertToDouble(parameters[1]),
+                            SettingsAndHelperFunctions.ConvertToDouble(parameters[2])
+                            );
+                    } else throw new Exception("Command has an incorrect number of parameters");
+                case "square":
+                    //Check parameters
+                    if (parameters.Length == 1) {
+                        return new
+                            Square(drawer,
+                            SettingsAndHelperFunctions.ConvertToDouble(parameters[0])
+                            );
+                    } else if (parameters.Length == 2) {
+                        return new Square(drawer,
+                            SettingsAndHelperFunctions.ConvertToDouble(parameters[0]),
+                            SettingsAndHelperFunctions.ConvertToDouble(parameters[1])
+                            );
+                    } else throw new Exception("Command has an incorrect number of parameters");
+                case "quadrilateral":
+                    //Check parameters
+                    if (parameters.Length == 8) {
+                        return new Quadrilateral(drawer,
+                            SettingsAndHelperFunctions.ConvertToPoint(parameters[0], parameters[1]),
+                            SettingsAndHelperFunctions.ConvertToPoint(parameters[2], parameters[3]),
+                            SettingsAndHelperFunctions.ConvertToPoint(parameters[4], parameters[5]),
+                            SettingsAndHelperFunctions.ConvertToPoint(parameters[6], parameters[7])
+                            );
+                    } else throw new Exception("Command has an incorrect number of parameters");
+                case "rectangle":
+                    //Check parameters
+                    if (parameters.Length == 2) {
+                        return new Rectangle(drawer,
+                            SettingsAndHelperFunctions.ConvertToDouble(parameters[0]),
+                            SettingsAndHelperFunctions.ConvertToDouble(parameters[1])
+                            );
+                    } else if (parameters.Length == 8) {
+                        return new Quadrilateral(drawer,
+                            SettingsAndHelperFunctions.ConvertToPoint(parameters[0], parameters[1]),
+                            SettingsAndHelperFunctions.ConvertToPoint(parameters[2], parameters[3]),
+                            SettingsAndHelperFunctions.ConvertToPoint(parameters[4], parameters[5]),
+                            SettingsAndHelperFunctions.ConvertToPoint(parameters[6], parameters[7])
+                            );
+                    } else if (parameters.Length == 4) {
+                        return new Rectangle(drawer,
+                            SettingsAndHelperFunctions.ConvertToPoint(parameters[0], parameters[1]),
+                            SettingsAndHelperFunctions.ConvertToPoint(parameters[2], parameters[3])
+                            );
+                    } else throw new Exception("Command has an incorrect number of parameters");
+                case "circle":
+                    //Check parameters
+                    if (parameters.Length == 1) {
+                        return new
+                            Circle(drawer,
+                            SettingsAndHelperFunctions.ConvertToDouble(parameters[0])
+                            );
+                    } else throw new Exception("Command has an incorrect number of parameters");
+                case "triangle":
+                    //Check parameters
+                    if (parameters.Length == 1) {
+                        return new
+                            Triangle(drawer,
+                            SettingsAndHelperFunctions.ConvertToDouble(parameters[0])
+                            );
+                    } else if (parameters.Length == 2) {
+                        return new
+                            Triangle(drawer,
+                            SettingsAndHelperFunctions.ConvertToDouble(parameters[0]),
+                            SettingsAndHelperFunctions.ConvertToDouble(parameters[1])
+                            );
+                    } else if (parameters.Length == 6) {
+                        return new Triangle(drawer,
+                            SettingsAndHelperFunctions.ConvertToPoint(parameters[0], parameters[1]),
+                            SettingsAndHelperFunctions.ConvertToPoint(parameters[2], parameters[3]),
+                            SettingsAndHelperFunctions.ConvertToPoint(parameters[4], parameters[5])
+                            );
+                    } else throw new Exception("Command has an incorrect number of parameters");
+
+                case "dot":
+                case "clear":
+                case "pen":
+                case "fill":
+                    throw new Exception("Not implemented");
+
+                default:
+                    throw new Exception("Command not found");
+            }
+
+        }
+    }
+}