internal void ValidateCommands(MowerInput mower)
{
if (mower.Commands == null || mower.Commands.Count == 0)
{
throw new ArgumentNullException("Commands set to null");
}
}
static void Main(string[] args)
{
ConsoleTitle();
List <string> moverinput = new List <string>();
StreamReader sr = new StreamReader("C:\\Files\\Chandra.txt");
string gridSize = sr.ReadLine();
string input = sr.ReadLine();
while (!string.IsNullOrEmpty(input))
{
moverinput.Add(input);
input = sr.ReadLine();
}
var girdsize = LawnDimension.gridDimension(gridSize);
if (moverinput.Count > 0)
{
List <MowerInput> mowers = new List <MowerInput>();
for (int i = 0; i < moverinput.Count; i++)
{
try
{
var eachMower = MowerInput.ParseMowerInput(moverinput[i], moverinput[i + 1]);
mowers.Add(eachMower);
}
catch (ArgumentException e)
{
Console.WriteLine("Exception: " + e.Message);
throw e;
}
i += 1;
}
Engine engine = new Engine(girdsize);
foreach (var mower in mowers)
{
try
{
Console.WriteLine($"Initial Position: ({mower.X}, {mower.Y}) Direction:{mower.Direction}");
var mowerOutput = engine.ProcessCommands(mower);
Console.WriteLine($"New Position: ({mowerOutput.X}, {mowerOutput.Y}) Direction:{mowerOutput.Direction}");
}
catch (ArgumentException e)
{
Console.WriteLine("Exception: " + e.Message);
throw e;
}
}
Console.ReadLine();
}
else
{
throw new ArgumentException("No input line detected");
}
sr.Close();
Console.ReadLine();
}
internal void ValidatePosition(MowerInput mower)
{
if (mower.X < 0 ||
mower.X > gridX ||
mower.Y < 0 ||
mower.Y > gridY)
{
throw new ArgumentException("Invalid Grid Coordinates");
}
}
internal MowerInput ProcessCommands(MowerInput mower)
{
ValidatePosition(mower);
ValidateCommands(mower);
foreach (var command in mower.Commands)
{
ProcessNextPosition(mower, command);
ValidatePosition(mower);
}
return(mower);
}
internal void ProcessNextPosition(MowerInput mower, MowerCommand command)
{
switch (mower.Direction)
{
case CompassDirection.North:
if (command == MowerCommand.Move)
{
mower.Y = mower.Y + 1;
}
else if (command == MowerCommand.Right)
{
mower.Direction = CompassDirection.East;
}
else if (command == MowerCommand.Left)
{
mower.Direction = CompassDirection.West;
}
break;
case CompassDirection.South:
if (command == MowerCommand.Move)
{
mower.Y = mower.Y - 1;
}
else if (command == MowerCommand.Right)
{
mower.Direction = CompassDirection.West;
}
else if (command == MowerCommand.Left)
{
mower.Direction = CompassDirection.East;
}
break;
case CompassDirection.East:
if (command == MowerCommand.Move)
{
mower.X = mower.X + 1;
}
else if (command == MowerCommand.Right)
{
mower.Direction = CompassDirection.South;
}
else if (command == MowerCommand.Left)
{
mower.Direction = CompassDirection.North;
}
break;
case CompassDirection.West:
if (command == MowerCommand.Move)
{
mower.X = mower.X - 1;
}
else if (command == MowerCommand.Right)
{
mower.Direction = CompassDirection.North;
}
else if (command == MowerCommand.Left)
{
mower.Direction = CompassDirection.South;
}
break;
default:
throw new ArgumentException("Not a valid direction");
}
}
public static MowerInput ParseMowerInput(string gridDimensionsAndStartingDirection, string commands)
{
MowerInput parsedMoverInput = new MowerInput();
int temp;
string[] data = gridDimensionsAndStartingDirection.Split(' ');
if (data != null)
{
if (int.TryParse(data[0], out temp))
{
parsedMoverInput.X = temp;
}
else
{
throw new ArgumentException("Not an integer");
}
if (int.TryParse(data[1], out temp))
{
parsedMoverInput.Y = temp;
}
else
{
throw new ArgumentException("Not an integer");
}
if (data[2] != null)
{
string cdirection = data[2];
char cc;
cc = cdirection.ToCharArray()[0];
parsedMoverInput.Direction = ParseCompassDirection(cc);
}
else
{
throw new System.ArgumentOutOfRangeException("index parameter is out of range");
}
}
else
{
throw new System.ArgumentException("Grid dimention cannot be null", "data");
}
List <MowerCommand> mowerCommands = new List <MowerCommand>();
if (commands != null)
{
var chars = commands.ToCharArray();
foreach (char c in chars)
{
MowerCommand Commands = ParseMowerCommand(c);
mowerCommands.Add(Commands);
}
}
else
{
throw new System.ArgumentException("Commands cannot be null", "data");
}
parsedMoverInput.Commands = mowerCommands;
return(parsedMoverInput);
}
