private string GenerateValidationCode(string username)
{
string code = _randomProvider.GenerateRandomCode(ValidationCodeLength);
User user = _userService.GetByUsername(username);
if (user == null)
{
throw new UserNotFoundException(username);
}
user.ValidationCode = code;
_users.SaveChanges();
return(code);
}
public Certificate GenerateCertificate(string username, int courseId, AssessmentSubmission assessmentSubmission)
{
User user = _users.GetByUsername(username);
Course course = _courses.GetById(courseId);
Certificate certificate = new Certificate
{
UserId = user.Id,
AssesmentSubmissionId = assessmentSubmission.Id,
CourseId = course.Id,
Code = _random.GenerateRandomCode(10)
};
CertificateGenerationInfo certificateGenerationInfo = _generationInfoProvider.GetByCourseId(courseId);
string certificateRelativePath = string.Format(CertificateFilePathFormat, certificate.Code);
string filePath = Path.Combine(certificateGenerationInfo.BaseFilePath, certificateRelativePath);
certificate.FilePath = certificateRelativePath;
_certificates.Add(certificate);
_certificates.SaveChanges();
Bitmap bitmap = (Bitmap)Image.FromFile(Path.GetFullPath(certificateGenerationInfo.TemplateFilePath));//load the image file
QRCodeEncoder encoder = new QRCodeEncoder();
Bitmap certificateUrlQrCode = encoder.Encode(string.Format(CertificateUrlFormat, certificate.Code));
using (Graphics certificateTemplate = Graphics.FromImage(bitmap))
{
using (Font arialFont = new Font("Arial", 16, FontStyle.Bold))
{
using (Font arialFontLarge = new Font("Arial", 20, FontStyle.Bold))
{
PlaceholderInfo studentData = certificateGenerationInfo.StudentName;
PlaceholderInfo courseData = certificateGenerationInfo.CourseName;
PlaceholderInfo datePlaceholder = certificateGenerationInfo.IssueDate;
PlaceholderInfo qrPlaceholder = certificateGenerationInfo.QrCode;
PlaceholderInfo certificateNumberPlaceholder = certificateGenerationInfo.CertificateNumber;
PlaceholderInfo moduleNamesPlaceholder = certificateGenerationInfo.ModuleNames;
PlaceholderInfo numberOfHoursPlaceholder = certificateGenerationInfo.NumberOfHours;
certificateTemplate.DrawString($"{user.FirstName} {user.MiddleName} {user.LastName}", arialFontLarge, new SolidBrush(ColorTranslator.FromHtml(studentData.Color)), new Rectangle(studentData.TopLeftX, studentData.TopLeftY, studentData.Width, studentData.Height));
certificateTemplate.DrawString(course.Title, arialFontLarge, new SolidBrush(ColorTranslator.FromHtml(courseData.Color)), new Rectangle(courseData.TopLeftX, courseData.TopLeftY, courseData.Width, courseData.Height));
certificateTemplate.DrawString(DateTime.Today.ToString("dd.MM.yyy") + "г.", arialFont, new SolidBrush(ColorTranslator.FromHtml(datePlaceholder.Color)), new Rectangle(datePlaceholder.TopLeftX, datePlaceholder.TopLeftY, datePlaceholder.Width, datePlaceholder.Height));
certificateTemplate.DrawImage(certificateUrlQrCode, new Rectangle(qrPlaceholder.TopLeftX, qrPlaceholder.TopLeftY, qrPlaceholder.Width, qrPlaceholder.Height));
certificateTemplate.DrawString($"Рег. № {certificate.Id}", arialFontLarge, new SolidBrush(ColorTranslator.FromHtml(certificateNumberPlaceholder.Color)), new Rectangle(certificateNumberPlaceholder.TopLeftX, certificateNumberPlaceholder.TopLeftY, certificateNumberPlaceholder.Width, certificateNumberPlaceholder.Height));
certificateTemplate.DrawString(course.ModuleNames, arialFont, new SolidBrush(ColorTranslator.FromHtml(moduleNamesPlaceholder.Color)), new Rectangle(moduleNamesPlaceholder.TopLeftX, moduleNamesPlaceholder.TopLeftY, moduleNamesPlaceholder.Width, moduleNamesPlaceholder.Height));
certificateTemplate.DrawString($"{course.NumberOfHours} учебни часа", arialFont, new SolidBrush(ColorTranslator.FromHtml(numberOfHoursPlaceholder.Color)), new Rectangle(numberOfHoursPlaceholder.TopLeftX, numberOfHoursPlaceholder.TopLeftY, numberOfHoursPlaceholder.Width, numberOfHoursPlaceholder.Height));
string directoryPath = Path.GetDirectoryName(filePath);
Debug.Assert(!string.IsNullOrEmpty(directoryPath));
if (!Directory.Exists(directoryPath))
{
Directory.CreateDirectory(directoryPath);
}
bitmap.Save(filePath);
}
}
}
return(certificate);
}