#include <iostream>
#include <fstream>
#include <string>
#include <conio.h>
#include <Windows.h>
using namespace std;


// Structure for students
struct student
{
    string fname;
    string lname;
    string Registration;
    string ClassMajor;
    string grade;
    int Gpa;
    string GPA;
    string accelarated;
    string studentData;
    string studentName;
    string newGrade;
    string Borrowing_Book;
}studentData;

//Classes
struct classes
{
    string S_C_math;
    int I_C_M_Math = 50;
    int I_C_math;
}Class;

struct teacher
{
    string fst_name;
    string lst_name;
    string qualification;
    string exp;
    string pay;
    string subj;
    string lec;
    string serves;
    string cel_no;

}tech[50];

void getlastLine(string filename)
{
    ifstream fin;
    fin.open(filename);
    if (fin.is_open()) {
        fin.seekg(-1, ios_base::end);

        bool keepLooping = true;
        while (keepLooping) {
            char ch;
            fin.get(ch);

            if ((int)fin.tellg() <= 1) {
                fin.seekg(0);
                keepLooping = false;
            }
            else if (ch == '\n') {
                keepLooping = false;
            }
            else {
                fin.seekg(-2, ios_base::cur);
            }
        }

        string lastLine;
        getline(fin, lastLine);
        Class.S_C_math = lastLine;
        Class.I_C_math = stoi(lastLine);


        fin.close();
    }


}

static void Hello() {
	cout << "hello boys";
}

int main()
{
	char choice;
	string find;
	string srch;
	int i = 0, j;

	while (1)
	{
		cout << "\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\";
		cout << "\n\n\t\t\tSCHOOL MANAGEMENT PROGRAM\n\n";
		cout << "\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\";
		cout << "\n\n\t\t\tMAIN SCREEN\n\n";
		cout << "Enter your choice: " << endl;
		cout << "1.Students information" << endl;
		cout << "2.Teacher information" << endl;
		cout << "3.Check amount of people in a class" << endl;
		cout << "4.Add or Look For Students Borrowing books" << endl;
		cout << "5.Exit program" << endl;
		cin >> choice;



		system("cls");

		switch (choice)
		{
		case '1':
		{
			Hello();

			while (1)
			{

				cout << "\t\t\t Student Information And Data\n\n\n";
				cout << "Enter Your choice: " << endl;
				cout << "1.Create New Entry" << endl;
				cout << "2.Find and Display entry" << endl;
				cout << "3.Jump to  main" << endl;
				cin >> choice;
				switch (choice)
				{
				case '1':
				{
					ofstream f1("Students.txt", ios::app);
					for (i = 0; choice != 'n' && choice != 'N'; i++)
					{
						cout << "Enter First name: ";
						cin >> studentData.fname;
						cout << "Enter Last name: ";
						cin >> studentData.lname;
						cout << "Enter Registration number: ";
						cin >> studentData.Registration;
						cout << "Enter class: ";
						cin >> studentData.ClassMajor;
						cout << "Enter Students Grade: ";
						cin >> studentData.grade;
						cout << "Enter Students Gpa: ";
						cin >> studentData.GPA;
						cout << "Enter True if student is borrowing a book enter False if not: ";
						cin >> studentData.Borrowing_Book;
						studentData.Gpa = stoi(studentData.GPA);
						if (studentData.Gpa >= 3.6)
						{
							studentData.accelarated = "True";
						}
						f1 << studentData.fname << endl << studentData.lname << endl << studentData.Registration << endl << studentData.ClassMajor << endl << studentData.grade << endl << studentData.GPA << endl << studentData.accelarated << endl << studentData.Borrowing_Book << endl;

						cout << "Do you want to countinue Adding student? Y to  continue N to stop: ";
						cin >> choice;
					}

					f1.close();
				}
				continue;

				case '2':
				{
					ifstream f2("Students.txt");
					cout << "Enter First name to be displayed: ";
					cin >> find;
					cout << endl;
					int notFound = 0;
					while (getline(f2, studentData.fname)) {
						if (studentData.fname == find)
						{
							notFound = 1;

							cout << "First Name: " << studentData.fname << endl;
							getline(f2, studentData.lname);
							cout << "Last Name: " << studentData.lname << endl;

							getline(f2, studentData.Registration);
							cout << "Registration No number: " << studentData.Registration << endl;
							getline(f2, studentData.ClassMajor);
							cout << "Class: " << studentData.ClassMajor << endl;
							getline(f2, studentData.grade);
							if (studentData.ClassMajor == "math")
							{
								Class.I_C_math += 1;
							}
							cout << "Grade: " << studentData.grade << endl;
							getline(f2, studentData.GPA);
							cout << "Gpa: " << studentData.GPA << endl;
							getline(f2, studentData.accelarated);
							cout << "Accelarated: " << studentData.accelarated << endl << endl;
						}

					}
					f2.close();
					if (notFound == 0) {

						cout << "No Record Found\n" << endl;
					}
					cout << "Press any key two times to proceed" << endl << endl;
					_getch();
					_getch();

				}
				continue;
				case '3':
				{
					break;
					system("cls");
				}
				}
				break;
			}
			continue;
		}
		case '2':
		{
			while (1)
			{
				system("cls");
				cout << "\t\t\tTeachers Info and Data\n\n\n";
				cout << "Enter your choice: " << endl;
				cout << "1.Create new entry\n";
				cout << "2.Find and display\n";
				cout << "3.Jump to main\n";
				cin >> choice;

				switch (choice)
				{
				case '1':
				{
					ofstream t1("Teachers.txt", ios::app);
					for (i = 0; choice != 'n' && choice != 'N'; i++)
					{
						if ((choice == 'y') || (choice == 'Y') || (choice == '1'))
						{
							cout << "Enter First name: ";
							cin >> tech[i].fst_name;
							cout << "Enter Last name: ";
							cin >> tech[i].lst_name;
							cout << "Enter qualification: ";
							cin >> tech[i].qualification;
							cout << "Enter experiance(year): ";
							cin >> tech[i].exp;
							cout << "Enter number of year in this School: ";
							cin >> tech[i].serves;
							cout << "Enter Subject whos teach: ";
							cin >> tech[i].subj;
							cout << "Enter Lecture(per Week): ";
							cin >> tech[i].lec;
							cout << "Enter pay: ";
							cin >> tech[i].pay;
							cout << "Enter Phone Number: ";
							cin >> tech[i].cel_no;


							t1 << tech[i].fst_name << endl << tech[i].lst_name << endl << tech[i].qualification << endl << tech[i].exp << endl << tech[i].serves << endl << tech[i].subj << endl << tech[i].lec << endl << tech[i].pay << endl << tech[i].cel_no << endl;

							cout << "Do you want to enter any more data: ";
							cout << "Press Y to Continue and N to Finish: ";
							cin >> choice;

						}
					}

					system("cls");

					t1.close();
				}

				case '2':
				{
					ifstream t2("Teachers.txt");
					cout << "Enter First name to be displayed: ";
					cin >> find;
					cout << endl;
					int notFound = 0;
					while (getline(t2, studentData.fname)) {

						if (tech[j].fst_name == find)
						{
							notFound = 1;
							cout << "First name: " << tech[j].fst_name << endl;
							getline(t2, tech[j].lst_name);
							cout << "Last name: " << tech[j].lst_name << endl;
							getline(t2, tech[j].qualification);
							cout << "Qualification: " << tech[j].qualification << endl;
							getline(t2, tech[j].exp);
							cout << "Experience: " << tech[j].exp << endl;

							getline(t2, tech[j].serves);
							cout << "number of year in this School: " << tech[j].serves << endl;

							getline(t2, tech[j].subj);
							cout << "Subject whos teach: " << tech[j].subj << endl;

							getline(t2, tech[j].lec);
							cout << "Enter Lecture(per Week): " << tech[j].lec << endl;
							getline(t2, tech[j].pay);
							cout << "pay: " << tech[j].pay << endl;

							getline(t2, tech[j].cel_no);
							cout << "Phone Number: " << tech[j].cel_no << endl << endl;
						}

					}
					t2.close();
					if (notFound == 0) {

						cout << "No Record Found" << endl;
					}
					cout << "Press any key two times to proceed";
					_getch();
					_getch();

				}
				continue;
				case '3':
				{
					break;
					system("cls");
				}
				}
				break;
			}
			continue;
		}
		case '3':
		{
			ifstream c2("Class.txt");

			getlastLine("Class.txt");
			cout << "Math Class: " << Class.S_C_math << "/" << Class.I_C_M_Math << endl;
			cout << "Press any key two times to proceed" << endl;
			_getch();
			_getch();
			continue;
		}

		case '4':
		{
			cout << "\t\t\tLibraray System Information\n\n\n";
			cout << "1.look for students Borrowing books" << endl;
			cout << "2.Jump To Main" << endl;
			cin >> choice;
			while (1)
			{
				switch (choice)
				{

				case '1':
				{
					ifstream f2("Students.txt");
					cout << "Enter First name to be displayed: ";
					cin >> find;
					cout << endl;
					int notFound = 0;
					for (j = 0; (j < i) || (!f2.eof()); j++)
					{

						getline(f2, studentData.fname);

						if (studentData.fname == find && studentData.Borrowing_Book == "true" || studentData.Borrowing_Book == "True")
						{
							notFound = 1;
							cout << "First Name: " << studentData.fname << endl;
							getline(f2, studentData.lname);
							cout << "Last Name: " << studentData.lname << endl;

							getline(f2, studentData.Registration);

							getline(f2, studentData.ClassMajor);

							getline(f2, studentData.grade);

							getline(f2, studentData.GPA);

							getline(f2, studentData.accelarated);

							getline(f2, studentData.Borrowing_Book);
							cout << "Borrowing book or books: " << studentData.Borrowing_Book << endl;
						}
						break;
					}

					if (notFound == 0) {

						cout << "No Record Found" << endl;
						cout << "Student is not Borrowing book or does not exist" << endl;
					}
					cout << "Press any key two times to proceed";
					_getch();
					_getch();
				}
				case '2':
				{
					break;
				}
				}
				break;
			}
			continue;
		}

		case '5':
		{
			break;
		}
		}
		break;
	}
}