#include <Terminal/Terminal.h>
#include <Terminal/PtyProcess.h>

using namespace Upp;

struct MinimalTerminalExample : TopWindow {
    Terminal term;          // A terminal ctrl instance.
    PtyProcess pty;         // A pseudoconsole process instance.
    MinimalTerminalExample()
    {
        SetRect(0, 0, 800, 600);
        Sizeable().Zoomable().CenterScreen().Add(term.SizePos());
        term.WhenOutput = [=](String out)   { pty.Write(out);  };                       // Terminal output
        term.WhenResize = [=]               { pty.SetSize(term.GetPageSize()); };       // Notifies the pty about page size changes.
        pty.Start("/bin/bash", Environment(), GetHomeDirectory());                      // Start a shell process on pty.
        // For a reasonable throughput, a callback-based loop is sufficient.
        SetTimeCallback(-1, [=] { term.WriteUtf8(pty.Get()); if(!pty.IsRunning()) Break(); });
    }
    
//  For very high throughput, below loop (or something better) can be used.
//
//  void Run()
//  {
//      pty.Start("/bin/bash", Environment(), GetHomeDirectory());
//      OpenMain();
//      while(IsOpen() && pty.IsRunning()) {
//          ProcessEvents();
//          String s = pty.Get();   // PtyProcess reads are non-blocking.
//          if(!IsNull(s))
//              term.WriteUtf8(s);
//          int l = s.GetLength();
//          Sleep(l >= 1024 ? 1024 * 10 / l : 10); // Scale...
//      }
//  }

};

GUI_APP_MAIN
{
    MinimalTerminalExample().Run();
}