// Lab1.cpp : This file contains the 'main' function. Program execution begins and ends there.
//

#include "Lab1.h"
#include <iostream>
#include <string>
#include <fstream>
#include <vector>
#include <sstream>
using namespace std;

/*
a helpful "usage message" function that uses that parameter to print out
a helpful usage message telling the user how to
run the program correctly , and returns the enumeration label
corresponding to the failure
*/
int usage(char* programName) {
	cout << "usage: " << programName << " <input_file_name>: ";
	cout << "Please enter exactly one command line argument as the file name." << endl;
	return invalidinput;
}

/*
A readfile function that reads the input and prints  out each line of the
file as the output
*/
int parse_file(vector<string>& lines, char* fileName) {
	//Create variables that takes int the file
	ifstream input;
	input.open(fileName);
	string line;

	//Check if the input is good
	if (!(input.good())) {
		return cannotopenfile;//return corresponding err
	}
	while (input >> line) {//Extract line from input and add to vector
		lines.push_back(line);
	}
	return success;//return corresponding msg
}

/*
The main method
*/
int main(int argc, char * argv[])
{
	//std::cout << "hello world" << endl;
	//Check if only one command line argument entered
	if (argc != NUM_ARGS) {
		return usage(argv[programname]);
	}
	else {
		if (parse_file(string_vec, argv[inputfilename]) != success) {//Check if the file is parsed with success
			return parse_file(string_vec, argv[inputfilename]);
		}
		else {
			for (unsigned int i = 0; i < string_vec.size(); i++) {//An outer loop through the string vector
				//Declare a boolean for checking if the string is number 
				bool isNum = true;
				//An inner loop that loops through each string
				for (unsigned int j = 0; j < string_vec[i].length(); j++) {
					if (!isdigit(string_vec[i][j])) {
						isNum = false;//Set the bool to be false for nondigit char
					}
				}
				//If all digits print and push to vector
				if (isNum) {
					//Convert string to int
					stringstream sstm(string_vec[i]);
					int temp = 0;
					sstm >> temp;

					//Push the int to the int vector 
					int_vec.push_back(temp);
				}
				else {
					cout << string_vec[i] << endl;
				}
			}
			//Print all the integers
			for (unsigned int k = 0; k < int_vec.size(); k++) {
				cout << int_vec[k] << endl;
			}
			return success;
		}
	}
}