internal void EditCourse()
{
int courseCount = courseController.CourseCount();
if (courseCount > 0)
{
Console.WriteLine("Please enter only one course id as displayed below");
DisplayCourses();
Console.Write("> ");
var courseIdToChange = Console.ReadLine();
while (courseController.SearchCourse(courseIdToChange) == null)
{
Console.WriteLine("Sorry! The course you wanna edit does not exist. Try again!");
Console.Write("> ");
courseIdToChange = Console.ReadLine();
}
Course oldCourse = courseController.SearchCourse(courseIdToChange);
Console.Write("You will change old id \"{0}\" to new id or press [Enter] to unchange: ", oldCourse.Id);
string updatedId = Console.ReadLine();
Console.Write("You will change old name \"{0}\" to new name or press [Enter] to unchange: ", oldCourse.Name);
string updatedName = Console.ReadLine();
Console.Write("You will change old description \"{0}\" to new description or press [Enter] to unchange: ", oldCourse.Description);
string updatedDes = Console.ReadLine();
if (updatedId == "")
{
updatedId = oldCourse.Id;
}
if (updatedName == "")
{
updatedName = oldCourse.Name;
}
if (updatedDes == "")
{
updatedDes = oldCourse.Description;
}
// Keep old information of course to modify if it happens error during updating
string id = oldCourse.Id;
string name = oldCourse.Name;
string des = oldCourse.Description;
// Delete course to edit by its id
courseController.DeleteCourse(courseIdToChange);
if (courseController.UpdateCourse(updatedId, updatedName, updatedDes))
{
Console.WriteLine("You updated new information for course id: " + updatedId);
}
else
{
courseController.CreateCourse(id, name, des);
Console.WriteLine();
Console.WriteLine("You failed to update new information for course id: " + id);
Console.WriteLine();
}
}
else
{
Console.WriteLine("Opp! empty course list. You should use selection 1 to add a course.");
}
Console.WriteLine("Press[Enter] button to continue...");
Console.ReadLine();
}