/*
    raFileIO.cpp
    Name:
    CIS 150 Random access (binary) file I/O lab
    Date:

    Lab to demonstrate binary file reading and writing.
*/

// Finish the parts of the program marked ** TODO **
// A separate data file named pres.txt should also be downloaded.

#include <cstdlib>
#include <cstring>
#include <fstream>
#include <iostream>
#include <string>
using namespace std;

class President {
private:
    static const int NAME_SIZE = 39;
    int year;
    char name[NAME_SIZE+1];
public:
    President() {
        setYear(0);
        setName("");
    }
    President(int yr, string nm) {
        setYear(yr);
        setName(nm);
    }
    void setYear(int yr) {
        year = yr;
    }
    void setName(string nm) {
        if (nm.length() > NAME_SIZE) nm.resize(NAME_SIZE);
        nm.copy(name, nm.length());
        name[nm.length()] = '\0';
    }
    int getYear() const {
        return year;
    }
    string getName() const {
        return string(name);
    }
};

bool displayFile(string filename);

int main(int argc, char** argv) {
    string fname = "pres.dat";
    string pres44 = "Barack Obama";
    string pres45 = "Donald Trump";
    int year44 = 2009;
    int year45 = 2016;

    cout << "Before adding last two presidents:\n";
    bool ok = displayFile(fname);
    if (ok) {
        // ** TODO **  Part I
        // Open the file specified by fname for binary reading and writing
        // If file error, display error message and exit with failure status
        // Create a President object using year44 and pres44
        // Create a President object using year45 and pres45
        // Seek to the end of the file
        // Write both President records to the output file as binary data
        // Close the file
        // ** END OF TODO **
        cout << "\nAfter adding last two presidents:\n";
        displayFile(fname);
    }

    cout << "Press enter to continue...";
    cin.get();
    return 0;
}

bool displayFile(string filename) {
    long numRecs;
    President rec;
    
    // ** TODO **  Part II
    // Open the file specified by filename for binary reading
    // If file error, display error message and return false
    // Calculate the number of records and store in numRecs
    // For each record in file
    //     Read a binary record from the file into rec
    //     Display record number, ". ", name from record, " (", year from record, ")\n"
    // Close the file
    // ** END OF TODO **
    
    return true;
}