/// <summary>The get problem.</summary>
/// <param name="currentProblem">The current problem.</param>
/// <param name="options">The options.</param>
/// <param name="currentOption">The current option.</param>
/// <returns>The <see cref="Problem"/>.</returns>
private Problem GetProblem(Model.Problem currentProblem, IList <int> options, int currentOption)
{
Option option = currentProblem.Options.First(opt => opt.Number == options[currentOption]);
// Todo: Check for conditions here.
Route route = option.Routes.First();
Model.Problem nextProblem = route.NextProblem;
currentOption = currentOption + 1;
if (currentOption >= options.Count)
{
var problem = Mapper.Map <Problem>(nextProblem);
return(problem);
}
return(this.GetProblem(nextProblem, options, currentOption));
}
/// <summary>The get next problem.</summary>
/// <param name="storyName">The story name.</param>
/// <param name="options">The options.</param>
/// <returns>The <see cref="ReadModel.Problem"/>.</returns>
/// <exception cref="ArgumentNullException">Thrown when an argument is null.</exception>
/// <exception cref="BusinessValidationException">Thrown when arguments do not pass validation.</exception>
/// <exception cref="ArgumentException">Thrown when the story doesn't exist.</exception>
public Problem GetNextProblem(string storyName, IList <int> options)
{
if (string.IsNullOrWhiteSpace(storyName))
{
throw new ArgumentNullException("storyName");
}
if (options == null)
{
throw new ArgumentNullException("options");
}
// Check basic options validity.
var optionsValidator = new OptionsValidator();
ValidationResults optionsValidationResults = optionsValidator.Validate(options);
if (!optionsValidationResults.IsValid)
{
throw new BusinessValidationException(optionsValidationResults);
}
// Get the story.
Model.Story story = this.storyRepository.GetStoryByName(storyName);
if (story == null)
{
throw new ArgumentException(string.Format("The story {0} doesn't exist.", storyName));
}
var optionsStoryValidator = new OptionsStoryValidator(story);
ValidationResults optionsStoryvalidationResults = optionsStoryValidator.Validate(options);
if (!optionsStoryvalidationResults.IsValid)
{
throw new BusinessValidationException(optionsStoryvalidationResults);
}
Model.Problem firstProblem = story.Steps.First(step => step.Number == 1).Problems.First();
Problem problem = this.GetProblem(firstProblem, options, 0);
return(problem);
}
