#include <cctype>

#include <iostream>
#include <fstream>
#include <string>

using std::string;

#include <cleansocks.h>
#include <cleanip.h>
#include <cleanbuf.h>
using namespace cleansocks;

#include "sha256.h"

// Port numbers.
const int DFLTPORT = 45100;

// Prompt and read, when you're just not capable of adult forms of
// configuration.
template <typename T>
T pandr(string prompt)
{
        std::cout << prompt << ": ";

        T ret;
        std::cin >> ret;
        return ret;
}

// Do all the stuff.
// Implement me.
void go(string hn, int pno, string user, string pwd)
{
}

// Tell if the string ends with .conf
bool is_dot_conf(string s)
{
        return s.length() > 5 && s.substr(s.length() - 5) == ".conf";
}

int main(int argc, char **argv)
{
        string pgm = argv[0];
        ++argv; --argc;

        // Port numbers
        int portno = DFLTPORT+1;

        // Parms.  Lots of ways to provide
        string host, user, pwd;
        int pno = DFLTPORT;

        if(argc == 1 && is_dot_conf(argv[0])) {
                // .conf file
                std::ifstream in(argv[0]);
                in >> host >> pno >> user >> std::ws;
                std::getline(in,pwd);
        } else if(argc > 0) {
                // Command line.
                host = *argv++; argc--;
                if(argc > 0 && isdigit(argv[0][0])) {
                        pno = std::atoi(*argv++); argc--;
                }
                if(argc > 0) {
                        user = *argv++; argc--;
                } else {
                        user = pandr<string>("User");
                }
                if(argc > 0) {
                        pwd = *argv++; argc--;
                } else {
                        pwd = pandr<string>("Password");
                }
        } else {
                host = pandr<string>("Host");
                pno = pandr<int>("Port");
                user = pandr<string>("User");
                pwd = pandr<string>("Password");
        }

        // The sender uses the odd port
        if(pno % 2 == 0) ++pno;

        // Connect.
        try {
                go(host,pno,user,pwd);
        } catch(std::exception &e) {
                std::cout << "Error: " << e.what() << std::endl;
        }
}