public async Task<ApplicationData> GetApplicationData() {
ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
return await Task.Factory.StartNew(() => {
var applicationData = new ApplicationData();
using ExcelPackage package = fileProcessor.LoadExcelPackageFromFile();
ExcelWorksheet accountsWorksheet = package.Workbook.Worksheets["Accounts"];
if (accountsWorksheet != null) {
applicationData.Accounts = ParseAccountsFromExcelWorkSheet(accountsWorksheet);
}
ExcelWorksheet categoriesWorksheet = package.Workbook.Worksheets["Categories"];
if (accountsWorksheet != null) {
applicationData.Categories = ParseCategoriesFromExcelWorkSheet(categoriesWorksheet);
}
ExcelWorksheet accountTransactionsWorksheet = package.Workbook.Worksheets["Account Transactions"];
if (accountsWorksheet != null) {
applicationData.AccountTransactions = ParseAccountTransactionFromExcelWorkSheet(accountTransactionsWorksheet);
}
return applicationData;
});
}