/**
 * @author Christian Burger (christian@krikkel.de)
 */

#include "App.hpp"
#include "Window.hpp"
#include "Debug.hpp"

#include <unistd.h>
#include <utmp.h>
#include <cstdlib>

namespace krikkel::NCursesPtyWindow
{
    App::App() : NCursesApplication(false)
    {

    }

    int App::run()
    {
        std::mutex writeMutex;

        Window *ptyWindow = new Window(&writeMutex
              , Root_Window->lines()
              , Root_Window->cols()
              , 0
              , 0);

        if(fork() == 0)
        {
            const char *shellPath = getenv("SHELL");
            if(!shellPath)
                shellPath = "/bin/bash";

            login_tty(ptyWindow->getFdPtyClient());
            const int sizeArg = 2;
            const char *arg[sizeArg] = {shellPath, NULL};
            fprintf(stderr, "<CTRL>+C exits shell.\n\n");
            execv(shellPath, const_cast<char * const *>(arg));
            fprintf(stderr, "Well, well, well … could not start a shell. We "
                            "tried `%s`. Maybe set `SHELL` environment variable"
                            " to a working value?", shellPath);
            exit(1);
        }

        while(true)
        {
            SingleUserInput input = ptyWindow->readSingleUserInput();
            if(input.isNormalKey())
                ptyWindow->writeUnicodeCharToClient(input.getRawInput());
            if(input.isFunctionKey())
            {
                if(input.getRawInput() == KEY_RESIZE)
                    ptyWindow->wresize(Root_Window->lines(), Root_Window->cols());
                else
                    ptyWindow->writeKeyToClient(input.mapKeyNcursesToVTerm());
            }
        }

        return 0;
    }
}