#include <iomanip>
#include <string>
#include <iostream>
#include <fstream>

using namespace std;

/*
To do list:

Student Scores
-Find a way to loop through student ID's. (90% done)
    Why does it get the second line 2x?
-Write input scores to file

-If menu option is chosen once, can't return to it. Why?

Grading
-Create Grading Function
*/

int main(int argc, char* argv[]) {
    int mainMenuChoice;
    int gradeMenuChoice;
    int quizzes[14];
    int homework[10];
    int labs[7];
    int tests[3];
    int project;
    int discussion;
    int teamwork;
    int extraCredit;
    int i = 0;
    int j = 0;
    int delimiter = 0;
    int studentID;

    string fname;
    string lname;
    string phoneNumber;
    string line;
    string studentId;
    string str;
    string filename = "studentGrade.txt";


    char charChoice;
    char studentChar;

    bool showGradeMenu = true;
    bool showMainMenu = true;
    bool addStudent = true;
    bool readLine = true;

    ifstream inputfile;
    ofstream outputfile;

    while (showMainMenu != false) {
        system("cls");

        cout << "----------------------------------------" << endl;
        cout << "\t STUDENT GRADEBOOK \t" << endl;
        cout << " 1 - Enter Student Information" << endl;
        cout << " 2 - Enter Student Scores" << endl;
        cout << " 3 - Grading" << endl;
        cout << " 0 - Exit" << endl;
        cout << "----------------------------------------" << endl;
        cout << "Please select an option from the menu: ";

        cin >> mainMenuChoice;
        cout << endl;

        switch (mainMenuChoice)
        {
            //Student Information
        case 1: {
            system("cls");
            cout << "Student Information:" << endl;

            outputfile.open(filename, fstream::app);

            while (addStudent != false) {
                cout << "Would you like to add a student? (Y/N) ";
                cin >> studentChar;
                switch (studentChar)
                {
                case 'Y':
                case 'y': {
                    system("cls");

                    cout << "Enter Student Name: ";
                    cin >> fname >> lname;

                    cout << "Enter Student ID: ";
                    cin >> studentID;

                    cout << "Enter Student Phone Number: ";
                    cin >> phoneNumber;

                    cout << endl;

                    outputfile << studentID << "," << lname << "," << fname << "," << phoneNumber << endl;
                    break; }
                case 'N':
                case 'n': {
                    addStudent = false;
                    cout << "Student Entry Complete. " << endl;
                    system("pause");
                    break; }
                default: {
                    cout << "Invalid Selection. Please select an option from the menu:";
                    cin >> studentChar;
                    break; }
                }
            }
            outputfile.close();
            break;
        }
                //Student Scores
        case 2: {
            system("cls");
            cout << "Student Scores:" << endl;
            inputfile.open(filename);

            if (inputfile.is_open()) {

                while (inputfile.good()) {
                    inputfile >> line;
                    delimiter = line.find_first_of(',');
                    studentId = line.substr(0, delimiter);
                    str = line.substr(delimiter + 1);

                    outLoop:
                    cout << "Would you like to enter grades for student ID: " << studentId << "? (Y/N)";
                    cin >> charChoice;

                    while (readLine != false) {

                        switch (charChoice)
                        {
                        case 'Y':
                        case 'y': {
                            system("cls");
                            while (showGradeMenu != false) {

                                system("cls");

                                cout << "----------------------------------------" << endl;
                                cout << "\t Assignments \t" << endl;
                                cout << " 1 - Quizzes" << endl;
                                cout << " 2 - Homework" << endl;
                                cout << " 3 - Labs" << endl;
                                cout << " 4 - Tests" << endl;
                                cout << " 5 - Project" << endl;
                                cout << " 6 - Discussion" << endl;
                                cout << " 7 - Team Work" << endl;
                                cout << " 8 - Extra Credit" << endl;
                                cout << " 0 - Exit" << endl;
                                cout << "----------------------------------------" << endl;
                                cout << "Please select an option from the menu: ";

                                cin >> gradeMenuChoice;
                                cout << endl;

                                switch (gradeMenuChoice)
                                {
                                case 1: {
                                    system("cls");
                                    cout << "Enter the quiz scores: " << endl;
                                    i = 0;
                                    do {
                                        cin >> quizzes[i];
                                        i++;
                                    } while (i < 13);

                                    for (j = 0; j < 13; j++) {
                                        cout << quizzes[j] << " ";
                                    }
                                    cout << endl;
                                    system("pause");
                                    break; }
                                case 2: {
                                    system("cls");
                                    cout << "Enter the homework scores: " << endl;
                                    i = 0;
                                    do {

                                        cin >> homework[i];

                                    } while (homework[i] < 9);

                                    for (j = 0; j < 9; j++) {
                                        cout << homework[j] << " ";
                                    }
                                    cout << endl;
                                    system("pause");
                                    break; }
                                case 3: {
                                    system("cls");
                                    cout << "Enter the lab scores: " << endl;
                                    i = 0;
                                    do {

                                        cin >> labs[i];

                                    } while (labs[i] < 9);

                                    for (j = 0; j < 9; j++) {
                                        cout << labs[j] << " ";
                                    }
                                    system("pause");
                                    break; }
                                case 4: {
                                    system("cls");
                                    cout << "Enter the test scores: " << endl;
                                    i = 0;
                                    do {

                                        cin >> tests[i];

                                    } while (tests[i] < 2);

                                    for (j = 0; j < 2; j++) {
                                        cout << tests[j] << " ";
                                    }
                                    cout << endl;
                                    system("pause");
                                    break; }
                                case 5: {
                                    system("cls");
                                    cout << "Enter the project score: " << endl;
                                    cin >> project;

                                    cout << project << endl;

                                    system("pause");
                                    break; }
                                case 6: {
                                    system("cls");
                                    cout << "Enter the discussion score: " << endl;
                                    cin >> discussion;

                                    cout << discussion << endl;
                                    system("pause");
                                    break; }
                                case 7: {
                                    system("cls");
                                    cout << "Enter the team work score: " << endl;
                                    cin >> teamwork;

                                    cout << teamwork << endl;
                                    system("pause");
                                    break; }
                                case 8: {
                                    system("cls");
                                    cout << "Enter the extra credit score:" << endl;
                                    cin >> extraCredit;

                                    cout << extraCredit << endl;
                                    system("pause");
                                    break; }
                                case 0: {
                                    system("cls");
                                    cout << "Exiting...\n" << endl;
                                    showGradeMenu = false;
                                    system("pause");
                                    goto outLoop; }
                                default: {
                                    cout << "Invalid Selection. Please select an option from the menu:";
                                    cin >> gradeMenuChoice;
                                    break;
                                }

                                }
                            }
                            break;
                        }
                        case 'N':
                        case 'n': {
                            system("cls");
                            readLine = false;
                            break;
                        }
                        default: {
                            cout << "Invalid Selection. Please select an option from the menu:";
                            cin >> charChoice;
                            break;
                        }
                        }
                    }

                }
            }
            outputfile.close();
            break;
        }
                //Grading
        case 3: {
            system("cls");
            cout << "Grading" << endl;
            //Input Grading function here
            break;
        }
                //Exit
        case 0: {
            system("cls");
            cout << "End of Program.\n" << endl;
            showMainMenu = false;
            break;
        }
        default: {
            cout << "Invalid Selection. Please select an option from the menu:";
            cin >> mainMenuChoice;
            break;
        }
        }
    }

    system("pause");
    return 0;
}