// Name: msglm
// Date: Sep 8th, 2022
// Program Name: Vectirs
// Description: Read in a file, output the data to the screen and the student who has the highest credit hours and highest GPA.

#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <array>
#include <iomanip>
using namespace std;

//initalizes the file
void initalize(string location, ifstream & fileVar) { 
    fileVar.open(location);

    if (!fileVar) {
        cout << "ERROR! " << location << " failed to open!";
        exit(1); 
    }
}

//Takes in the initalized file and turns it into a vector of arrays of strings
vector<array<string, 10>> serializeIntoVecArr(ifstream & fileVar) {
    vector<array<string, 10>> studentDataContainer;
    studentDataContainer.push_back(array<string, 10>());
    int student = 0;
    int data = 0;

    while(getline(fileVar, studentDataContainer[student][data]) && fileVar.peek() != EOF) {
        data = data + 1;
        if (data == 10) {
            data = 0;
            student = student + 1;
            //This initializes the next set of arrays
            studentDataContainer.push_back(array<string, 10>());
        }
    }
    return studentDataContainer;
}


//Prints out all the data in a tabular format
void allData(vector<array<string, 10>> studentDataContainer) {

    //this code repetition is gross
    //Perhaps I could have made this cleaner
    cout << left << setw(25) << "First Name" << " ";
    cout << left << setw(25) << "Last Name" << " ";
    cout << left << setw(25) << "T-Number" << " ";
    cout << left << setw(25) << "Major" << " ";
    cout << left << setw(25) << "Advisor" << " ";
    cout << left << setw(25) << "GPA" << " ";
    cout << left << setw(25) << "Credit Hours" << " ";
    cout << left << setw(25) << "Years until Graduation" << " ";
    cout << left << setw(25) << "Hardest Class" << " ";
    cout << left << setw(25) << "Easiest Class" << " ";
    
    //C++ 11 range based loops
    //I wish I knew about these earlier
    for (array<string, 10> student : studentDataContainer) {
        cout << endl;
        for (string data : student) {
            cout << left << setw(25) << data << " ";
        }
    }

}



void highestCreditHours(vector<array<string, 10>> studentDataContainer) {
    cout << "\n\nStudent with highest credit hours:\n";
    int highestStudent = 0;
    int highest = 0;

    //gets the largest using only one pass through
    for(int studentPos = 0; studentPos < studentDataContainer.size(); studentPos++) {
        for (string data : studentDataContainer[studentPos]) {
            if (data[6] > highest) {
                highest = data[6];
                highestStudent = studentPos;
            }
        }
    }

    //Outputs all the data of the largest
    for (int dataPos = 0; dataPos < 10; dataPos++) {
        cout << left << setw(25) << studentDataContainer[highestStudent][dataPos] << " ";
    }
}

//clone of highestCreditHours
void highestGPA(vector<array<string, 10>> studentDataContainer) {
    cout << "\n\nStudent with highest GPA \n";
    int highestStudent = 0;
    int highest = 0;

    for(int studentPos = 0; studentPos < studentDataContainer.size(); studentPos++) {
        for (string data : studentDataContainer[studentPos]) {
            if (data[7] > highest) {
                highest = data[7];
                highestStudent = studentPos;
            }
        }
    }

    for (int dataPos = 0; dataPos < 10; dataPos++) {
        cout << left << setw(25) << studentDataContainer[highestStudent][dataPos] << " ";
    }

}

int main() {
    //Variable declaration
    ifstream data;


    //"Read in an unknown number of records from an input file and store that data into vector variables for the below"
    //
    //The data will be going into a vector, but that vector will hold arrays at a fixed size since each student's data will be fixed
    //This makes accessing the data infinitely easier
    initalize("input.txt", data);
    vector<array<string, 10>> serializedVectorArray = serializeIntoVecArr(data);

    allData(serializedVectorArray);
    highestCreditHours(serializedVectorArray);
    highestGPA(serializedVectorArray);

}

/*
   This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License Version 3 ONLY as published by the Free Software Foundation.

   This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details.

   You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
   */