// Nicole Sickafoose
// Principles of Programming I 130
// Fall 2011
//
// Internet Bill Program
// 3
//
// This program will ask for file information from the user, read data from the corresponding file, perform calculations depending on whether the data satisfies certain requirements, and store the final output in an output file in order to calculate an internet server bill.
//
#include <fstream>
#include <iomanip>
#include <iostream>
#include <string>
    using namespace std;
int main (void)

{
    const float AMTDUEC = 19.95;//This is the only applicable answer for option C
    ifstream    dataFile;   //This file contains the data necessary for computation
    ofstream    infoFile;   //This file will contain the output
    float       amtDueA,    //

                amtDueB,    //
                savingsB,   //
                aSavingsC,  //
                bSavingsC,  //
                numHours;   //
    char        serviceCode;//
    string      accountNum, //
                inDataFile, //This is a user specified input file
                outDataFile,//This is a user specified output file
                outConst;   //This is to save space in the output part of the code

    outConst = "Account Number    Service Code       Hours         Amt Due";

    cout << "Please enter name of input file: ";
    cin  >> inDataFile;
    cout << endl;

    cout << "Please enter name of output file: ";
    cin  >> outDataFile;
    cout << endl;

    dataFile.open(inDataFile.c_str());
    infoFile.open(outDataFile.c_str());

    dataFile >> accountNum;
    dataFile >> serviceCode;
    dataFile >> numHours;

    if (numHours > 744)
    {
        cout << endl;
        cout << left << setw(8) << "Input" << setw(8) << accountNum << setw(8) << serviceCode << setw(8) << numHours << setfill(5) << "*";
        cout << " Hours Exceed Threshold " << setfill(5) << "*" << endl;
        cout << endl;
    }

    if (serviceCode != A or serviceCode != B or serviceCode != C)
    {
        cout << endl;
        cout << left << setw(8) << "Input" << setw(8) << accountNum << setw(8) << serviceCode << setw(8) << numHours << setfill(5) << "*";
        cout << " Invalid Service Code " << setfill(5) << "*" << endl;
        cout << endl;
    }

    amtDueA   = (numHours - 10) * 2.25;
    amtDueB   = (numHours - 20) * 1.25;
    savingsB  = amtDueA - amtDueB;
    aSavingsC = amtDueA - AMTDUEC;
    bSavingsC = amtDueB - AMTDUEC;

    if (serviceCode == A)
    {
        if (numHours <= 10)
        {
            infoFile << outConst;
            infoFile << setw(10) << accountNum << setw(15) << serviceCode << setw(17) << numHours << setw(16) << "9.95" << endl;
            infoFile << endl;
        }
        else if (numHours > 10)
        {
            infoFile << outConst;
            infoFile << setw(10) << accountNum << setw(15) << serviceCode << setw(17) << numHours << setw(16) << amtDueA << endl;
            if ((savingsB > 0) && (aSavingsC > 0))
            {
                infoFile << setw(33) << "Savings for Package B" << setw(15) << savingsB << endl;
                infoFile << setw(33) << "Savings for Package C" << setw(15) << aSavingsC << endl;
            }
            else if ((savingsB > 0) && (aSavingsC <= 0))
            {
                infoFile << setw(33) << "Savings for Package B" << setw(15) << savingsB << endl;
            }
            else if ((savingsB <= 0) && (aSavingsC > 0))
            {
                infoFile << setw(33) << "Savings for Package C" << setw(15) << aSavingsC << endl;
            }
            else if ((savingsB <= 0) && (aSavingsC <= 0))
            {
                infoFile << " ";
            }
        }
    }
    if (serviceCode == B)
    {
        if (numHours <= 20)
        {
            infoFile << outConst;
            infoFile << setw(10) << accountNum << setw(15) << serviceCode << setw(17) << numHours << setw(16) << "14.95" << endl;
            infoFile << endl;
        }
        else if (numHours > 20)
        {
            infoFile << outConst;
            infoFile << setw(10) << accountNum << setw(15) << serviceCode << setw(17) << numHours << setw(16) << amtDueB << endl;
            if (bSavingsC > 0)
            {
                infoFile << setw(33) << "Savings for Package C" << setw(15) << bSavingsC << endl;
            }
            else if (bSavingsC <= 0)
            {
                infoFile << " ";
            }
        }
    }
    if (serviceCode == C)
    {
        infoFile << outConst;
        infoFile << setw(10) << accountNum << setw(15) << serviceCode << setw(17) << numHours << setw(16) << AMTDUEC << endl;
    }

    dataFile.close();
    infoFile.close();

    return 0;
}