public async Task <OperationResult <IEnumerable <Course> > > GetCoursesForAuthor(Guid authorId)
{
using (CourseLibraryContext context = new CourseLibraryContext(options))
{
try
{
var author = await AuthorCompiledQueries.GetAuthor(context, authorId);
if (author == null)
{
return(new FailedOperationResult <IEnumerable <Course> >
{
Code = ConstOperationCodes.AUTHOR_NOT_FOUND,
});
}
var result = await context.Courses.Where(c => c.AuthorId == authorId).ToListAsync();
return(new SuccessOperationResult <IEnumerable <Course> >
{
Result = result,
Code = ConstOperationCodes.SUCCESS_OPERATION
});
}
catch (Exception e)
{
logger.Error($"error in course library get courses for author {e.Message}");
return(new FailedOperationResult <IEnumerable <Course> >
{
Code = ConstOperationCodes.FAILED_OPERATION
});
}
}
}
public async Task <OperationResult <Author> > GetAuthor(Guid id, bool withCourses = false)
{
using (CourseLibraryContext context = new CourseLibraryContext(options))
{
try
{
Author author;
if (withCourses)
{
author = await AuthorCompiledQueries.GetAuthorWithCourses(context, id);
}
else
{
author = await AuthorCompiledQueries.GetAuthor(context, id);
}
if (author != null)
{
return(new SuccessOperationResult <Author>
{
Code = ConstOperationCodes.AUTHOR_FOUND,
Result = author
});
}
else
{
return(new FailedOperationResult <Author>
{
Code = ConstOperationCodes.AUTHOR_NOT_FOUND
});
}
}
catch (Exception e)
{
logger.Error($"error in course library context getting author {e.Message}");
return(new FailedOperationResult <Author>
{
Code = ConstOperationCodes.FAILED_OPERATION
});
}
}
}
