public async Task <MazebotSolverImageResponse> GetMapImage(string sessionId, string mazeId, bool includeSolution)
{
var session = await _repository.Get(sessionId);
if (!session.Any())
{
return(null);
}
var maze = session.SingleOrDefault(r => string.Equals(r.Response?.MazeId, mazeId));
if (maze == null)
{
return(null);
}
var response = new MazebotSolverImageResponse();
var map = new Map(maze.Response.Maze.Map);
var start = maze.Response.Maze.StartingPosition;
var solution = maze.Response.Solution.PathTaken;
using (var image = _imager.GetImage(map, start[0], start[1], solution, includeSolution))
{
if (image == null)
{
return(null);
}
using (var stream = new MemoryStream())
{
if (image.Frames.Count > 1)
{
image.SaveAsGif(stream);
response.ContentType = "image/gif";
}
else
{
image.SaveAsPng(stream);
response.ContentType = "image/png";
}
response.Image = stream.ToArray();
}
}
return(response);
}
public async void GetMapSolution_Should_Return_Correctly()
{
var service = Substitute.For <IMazebotSolver>();
var response = new MazebotSolverImageResponse
{
Image = new byte[] { 1, 2, 3 },
ContentType = "application/json"
};
service.GetMapImage(Arg.Any <string>(), Arg.Any <string>(), Arg.Any <bool>()).Returns(response);
var actual = await _controller.GetMapSolution(service, "sessionId", "mazeId");
actual.Should().BeOfType <FileContentResult>();
actual.As <FileContentResult>().FileContents.Should().BeSameAs(response.Image);
actual.As <FileContentResult>().ContentType.Should().Be(response.ContentType);
}
