#include<iostream>
#include<fstream>
#include<sstream>
using namespace std;

/*
R.M. 2016 HC
*/

struct payroll{
	string first_name;
	string last_name;
	float rate;
	float hours;
	float ot_rate;
	float ot_hours;
	float tax_rate;

	float gross_pay;
	float taxes;
	float net_pay;
} data[150];



int greet();
int menu(int num);
void new_file();
void open_file();
void rename_file();
void delete_file();
string space_this(string text, int space, int align);
string space_this2(string text, int space, int align);

int main(){

	greet();

//	system("pause");
	return 0;
}

int greet(){
	printf("Simple Payroll Program\t\tabc123\n\n");
	string username, password;
	cout<<"Username: ";cin>>username;
	cout<<"Password: ";cin>>password;
	cout<<endl;
	if(username=="abc" && password=="123"){menu(3);}
}

int menu(int num){
	char choice;
	if(num==1){cout<<"[n] New File\n[o] Open File\n[r] Rename File\n[d] Delete File\n[z] Exit\n\n";}
	else if(num==3){cout<<"    [n] New File\n    [o] Open File\n    [r] Rename File\n    [d] Delete File\n    [z] Exit\n\n";}
	else{printf("[n] New File  [o] Open File  [r] Rename File  [d] Delete File  [z] Exit\n");}
	cin>>choice;
	switch(choice){
		case 'n':
			system("cls");
			new_file();
			break;
		case 'o':
			system("cls");
			open_file();
			break;
		case 'r':
			system("cls");
			rename_file();
			break;
		case 'd':
			system("cls");
			delete_file();
			break;
		case 'z':
			break;
			return 0;
		default:
			system("cls");
			menu(1);
			break;

	}
}

void new_file(){
	string filename;
	int entries=0;
	cout<<"Enter Filename: ";cin>>filename;cout<<"\n";
	cout<<"Enter Number Of Entries: ";cin>>entries;
	system("cls");

	float gross_total=0;
	float tax_total=0;
	float net_total=0;
	cout<<filename<<"    "<<entries<<" entries\n\n";
	for(int i=0;i<entries;i++){
		cin.ignore();
		cout<<"#"<<i+1<<endl;
		cout<<"Enter First Name: ";getline(cin,data[i].first_name);
		cout<<"Enter Last Name: ";getline(cin,data[i].last_name);
		cout<<"Enter Rate: ";cin>>data[i].rate;
		cout<<"Enter Hours: ";cin>>data[i].hours;
		cout<<"Enter Overtime Rate: ";cin>>data[i].ot_rate;
		cout<<"Enter Overtime Hours: ";cin>>data[i].ot_hours;
		cout<<"Enter Tax Rate: ";cin>>data[i].tax_rate;

		data[i].gross_pay = data[i].rate*data[i].hours + data[i].ot_rate*data[i].ot_hours;
		data[i].taxes = (data[i].tax_rate/100)*data[i].gross_pay;
		data[i].net_pay = data[i].gross_pay-data[i].taxes;

		gross_total+=data[i].gross_pay;
		tax_total+=data[i].taxes;
		net_total+=data[i].net_pay;


		cout<<endl;
	}
	system("cls");
	cout<<filename<<"\n\n";
	ofstream payroll_file;
	payroll_file.open(filename.c_str());
	printf("%-20s|%-7s|%-4s|%-7s|%-4s|%-10s|%-9s|%-10s|\n","Employee","Rate","Hrs","OT","Hrs","Gross","Taxes","Net Pay");
    printf("%-20s|%-7s|%-4s|%-7s|%-4s|%-10s|%-9s|%-10s|\n","","","","","","","","");

    payroll_file<<space_this("Employee",20,1)<<space_this("Rate",7,1)<<space_this("Hrs",4,1)<<space_this("OT",7,1);
	payroll_file<<space_this("Hrs",4,1)<<space_this("Gross",10,1)<<space_this("Taxes",9,1)<<space_this("Net Pay",10,1)<<"\n";

    //convert int to string
    stringstream temp10, temp11, temp12;
    string gross_total_str, tax_total_str, net_total_str;
    temp10<<gross_total; temp10>>gross_total_str;
    temp11<<tax_total; temp11>>tax_total_str;
    temp12<<net_total; temp12>>net_total_str;

    for(int i=0;i<entries;i++){
    	stringstream temp, temp2, temp3, temp4, temp5, temp6, temp7;
    	string rate_str, rate_hrs_str, ot_rate_str, ot_hrs_str, gross_str, taxes_str, net_str;

		temp<<data[i].rate;       temp>>rate_str;      temp2<<data[i].hours;    temp2>>rate_hrs_str;
    	temp3<<data[i].ot_rate;   temp3>>ot_rate_str;  temp4<<data[i].ot_hours; temp4>>ot_hrs_str;
    	temp5<<data[i].gross_pay; temp5>>gross_str;    temp6<<data[i].taxes;    temp6>>taxes_str;
    	temp7<<data[i].net_pay;   temp7>>net_str;


    	cout<<space_this(data[i].first_name+" "+data[i].last_name,20,1);
    	cout<<space_this(rate_str,7,2);
    	cout<<space_this(rate_hrs_str,4,2);
    	cout<<space_this(ot_rate_str,7,2);
    	cout<<space_this(ot_hrs_str,4,2);
    	cout<<space_this(gross_str,10,2);
    	cout<<space_this(taxes_str,9,2);
    	cout<<space_this(net_str,10,2);
    	cout<<endl;

    	payroll_file<<space_this(data[i].first_name+" "+data[i].last_name,20,1);
		payroll_file<<space_this(rate_str,7,2);
		payroll_file<<space_this(rate_hrs_str,4,2);
		payroll_file<<space_this(ot_rate_str,7,2);
		payroll_file<<space_this(ot_hrs_str,4,2);
		payroll_file<<space_this(gross_str,10,2);
		payroll_file<<space_this(taxes_str,9,2);
		payroll_file<<space_this(net_str,10,2);
		payroll_file<<"\n";

	}
	printf("%-20s|%-7s|%-4s|%-7s|%-4s|%-10s|%-9s|%-10s|\n\n","","","","","","","","");
	printf("%-20s %-7s %-4s %12s|%10.2f|%9.2f|%10.2f|\n","","","","Total: ",gross_total,tax_total,net_total);
	cout<<endl;
	payroll_file<<space_this2("",20,1)<<space_this2("",7,1)<<space_this2("",4,1)<<space_this("Total: ",12,2);
	payroll_file<<space_this(gross_total_str,10,2)<<space_this(tax_total_str,9,2)<<space_this(net_total_str,10,2)<<"\n";
	payroll_file.close();
	cout<<endl;
    menu(2);


}

void open_file(){
    string contents[125];
    int lines=0;
    string filename;
    cout<<"Enter Filename: ";cin>>filename;
    cout<<endl;
    if(!rename(filename.c_str(),filename.c_str())){
        string content;
        ifstream openfile (filename.c_str());
        if(openfile.is_open()){
            while(getline(openfile,content)){
                cout<<content<<endl;
                ++lines;
            }
            for(int i=0;i<lines;i++){
                getline(openfile,contents[i]);
            }
            for(int i=0;i<10;i++){cout<<contents[i];}
        }
        openfile.close();
    } else {cout<<"File Not Found\n\n";}
	cout<<endl;
    menu(2);
}

void rename_file(){
    string filename, new_filename;
    cout<<"Enter Filename: ";cin>>filename;
    cout<<"Enter New Filename: ";cin>>new_filename;
    if(!rename(filename.c_str(),new_filename.c_str())){
        cout<<"File Renamed\n\n";
    } else {cout<<"File Not Found\n\n";}
	menu(2);
}

void delete_file(){
    string filename;
    cout<<"Enter Filename: ";cin>>filename;
    if(!rename(filename.c_str(),filename.c_str())){
        remove(filename.c_str());
        cout<<"File Deleted\n\n";
    } else {cout<<"File Not Found\n\n";}
    menu(2);
}

string space_this(string text, int space, int align){
	string spaces="";
	for(int i=0;i<(space-text.length());i++){spaces+=" ";}
	if(align==1){return text+spaces+"|";} else {return spaces+text+"|";}
}

string space_this2(string text, int space, int align){
	string spaces="";
	for(int i=0;i<(space-text.length());i++){spaces+=" ";}
	if(align==1){return text+spaces+" ";} else {return spaces+text+" ";}
}