/// <summary>
/// The primary button control that generates the salary breakdown in a display grid.
/// 1) It checks whether the salary input is not empty, populates a model called employeedetails with the values associated with the employee.
/// 2) Collects the addition and the deduction components that the user has added from the UI(form) in userAdditionComponents and userDeductionComponents lists respectively.
/// 3) The method ComputeRules() computes the static components from the web.config and dynamic components from the form input on the salary input and stores them.
/// 4) The method PopulateGrid() is responsible for filling the display grid with the calculated components (salary Breakdown) that is displayed to the user.
/// 5) The method CollectTemplateData() is responsible for preparing the html template that will be sent to the employee. Values which are
/// to be added to the template are represented by placeholders which are replaced with the actual values in the method flow.
/// 6)The method SendTemplateData() is responsible for creating a pdf from the html template and setting up the smtp mail parameters to
/// deliver the salary slip in pdf format to the employee.
/// 7) The method DeleteSalarySlips() is responsible for deleting the salary slips from the local store as soon as the mail is delivered
/// to the employee.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void generateButton_Click(object sender, EventArgs e)
{
ICollection <Rules> userAdditionComponents = null;
ICollection <Rules> userDeductionComponents = null;
if (salary.Text.ToString() != string.Empty)
{
decimal salaryAmount = Convert.ToDecimal(salary.Text);
ISalaryService salaryService = new SalaryService();
EmployeeDetails employeeDetails = new EmployeeDetails();
employeeDetails.EmployeeName = requiredName.Text.ToString();
employeeDetails.DateOfJoining = dateOfJoining.Text.ToString();
employeeDetails.PanNumber = pan.Text.ToString();
employeeDetails.AccountNumber = accountNumber.Text.ToString();
employeeDetails.Designation = designation.Text.ToString();
employeeDetails.Salary = salary.Text.ToString();
employeeDetails.EmailId = email.Text.ToString();
employeeDetails.Month = month.SelectedItem.ToString();
employeeDetails.Year = year.SelectedItem.ToString();
if (addComponentNumber.Text != string.Empty)
{
List <Rules> userRules = new List <Rules>();
userRules = SegregateComponents(addComponentNumber, ComputationVariety.ADDITION, userRules);
userAdditionComponents = FetchUserComponents(addOuterPanel.Controls, ComputationVariety.ADDITION, userRules);
}
if (deductComponentNumber.Text != string.Empty)
{
List <Rules> userRules = new List <Rules>();
userRules = SegregateComponents(deductComponentNumber, ComputationVariety.SUBTRACTION, userRules);
userDeductionComponents = FetchUserComponents(deductOuterPanel.Controls, ComputationVariety.SUBTRACTION, userRules);
}
ICollection <Rules> computedRules = salaryService.ComputeRules(salaryAmount, userAdditionComponents, userDeductionComponents);
ICollection <Rules> finalResults = PopulateGrid(computedRules, userAdditionComponents, userDeductionComponents);
string templateContent = salaryService.CollectTemplateData(employeeDetails, finalResults);
string pdfPath = salaryService.SendTemplate(employeeDetails, templateContent);
salaryService.DeleteSalarySlips(pdfPath);
//Mail Content;
}
}