#include "Common.h"
#include "DialogConfigEngine.h"

DialogConfigEngine *DialogConfigEngine::m_instance = 0;

//------------------------------------------------------------------------------
// public:
//------------------------------------------------------------------------------
DialogConfigEngine::DialogConfigEngine(ConfigDatabase &db) : m_db(db), m_test_tts(0)
{
	m_instance = this;
}

//------------------------------------------------------------------------------
DialogConfigEngine::~DialogConfigEngine()
{
	m_instance = 0;
}

//------------------------------------------------------------------------------
INT_PTR CALLBACK DialogConfigEngine::process(HWND window, UINT message, WPARAM wparam, LPARAM lparam)
{
	if (!m_instance)
	{
		return 1;
	}

	switch (message)
	{
	  case WM_INITDIALOG:
		m_instance->load(window);
		break;

	  case WM_NOTIFY:
		if (PSN_APPLY == reinterpret_cast<LPNMHDR>(lparam)->code)
		{	
			m_instance->save(window);
			m_instance->m_db.save();
		}
		break;

	  case WM_HSCROLL:
		m_instance->changed(window);
		break;

	  case WM_COMMAND:
		m_instance->command(window, wparam);
		break;
	}

	return 0;
}

//------------------------------------------------------------------------------
// private:
//------------------------------------------------------------------------------
void DialogConfigEngine::command(HWND window, int control)
{
	switch (LOWORD(control))
	{
	  case IDC_WELCOME_MSG:
		if (EN_CHANGE == HIWORD(control))
		{
			changed(window);
		}
		break;

	  case IDC_SELECT_VOICE:
		if (CBN_SELCHANGE == HIWORD(control))
		{
			changed(window);
		}
		break;

	  case IDC_SELECT_ENGINE:
		if (CBN_SELCHANGE == HIWORD(control))
		{
			updateVoices(window);
			changed(window);
		}
		break;

	  case IDC_CONFIG_LEXICON:
		if (createTts(window))
		{
			if (!m_test_tts->lexiconDialog(window))
			{
				MessageBox(window, L"Lexicon for this engine is not supported", L"Speak", MB_OK | MB_ICONEXCLAMATION);
			}
		}
		break;

	  case IDC_BUTTON_TEST:
		if (createTts(window))
		{
			m_test_tts->say(TranslateW(L"testing testing 1 2 3"));
		}
		break;
	}
}

//------------------------------------------------------------------------------
void DialogConfigEngine::load(HWND window)
{
	TranslateDialogDefault(window);

	// add the available engines to the combo box
	SpeechInterface si;
	std::vector<std::wstring> engines = si.getAvailableEngines();
	for (unsigned int i = 0; i < engines.size(); ++i)
	{
		SendDlgItemMessage(window, IDC_SELECT_ENGINE, CB_ADDSTRING, 0, (LPARAM)engines[i].c_str());
	}

	VoiceDesc desc = m_db.getVoiceDesc();

	// initialise the sliders
	SendDlgItemMessage(window, IDC_SLIDER_VOLUME, TBM_SETPOS, TRUE, desc.volume);
	SendDlgItemMessage(window, IDC_SLIDER_PITCH, TBM_SETPOS, TRUE, desc.pitch);
	SendDlgItemMessage(window, IDC_SLIDER_RATE, TBM_SETPOS, TRUE, desc.rate);

	// select the speech engine
	SendDlgItemMessage(window, IDC_SELECT_ENGINE, CB_SELECTSTRING, 0, reinterpret_cast<LPARAM>(desc.engine.c_str()));

	// initialise the welcome message box
	SetDlgItemText(window, IDC_WELCOME_MSG, m_db.getWelcomeMessage().c_str());

	updateVoices(window);
}

//------------------------------------------------------------------------------
void DialogConfigEngine::save(HWND window)
{
	VoiceDesc desc;
	getVoiceDesc(window, desc);
	m_db.setVoiceDesc(desc);

	// store the welcome message
	WCHAR *text = Hlp_GetDlgItemText(window, IDC_WELCOME_MSG);
	m_db.setWelcomeMessage(text);
}

//------------------------------------------------------------------------------
void DialogConfigEngine::updateVoices(HWND window)
{
	SpeechInterface si;
	m_test_tts = std::auto_ptr<TextToSpeech>(si.createTts(getEngine(window)));

	if (!m_test_tts.get())
	{
		return;
	}

	// add the voices onto the list
	std::vector<std::wstring> voices = m_test_tts->getVoices();

	SendDlgItemMessage(window, IDC_SELECT_VOICE, CB_RESETCONTENT, 0, 0);
	for (unsigned int i = 0; i < voices.size(); ++i)
	{
		SendDlgItemMessage(window, IDC_SELECT_VOICE, CB_ADDSTRING, 0, 
			(LPARAM)voices[i].c_str());
	}

	// get the voice saved in the database
	std::wstring voice = m_db.getVoiceDesc().voice;
	
	if (FAILED(SendDlgItemMessage(window, IDC_SELECT_VOICE, CB_FINDSTRINGEXACT, 0, (LPARAM)voice.c_str())))
	{
		// select the first one
		SendDlgItemMessage(window, IDC_SELECT_VOICE, CB_SETCURSEL , 0, 0);
	}
	else
	{
		// select the saved voice
		SendDlgItemMessage(window, IDC_SELECT_VOICE, CB_SELECTSTRING, 0, (LPARAM)voice.c_str());
	}
}

//------------------------------------------------------------------------------
void DialogConfigEngine::getVoiceDesc(HWND window, VoiceDesc &desc)
{
	// get the engine
	WCHAR *text = Hlp_GetDlgItemText(window, IDC_SELECT_ENGINE);
	desc.engine = text;
	
	// get the voice
	WCHAR *voice = Hlp_GetDlgItemText(window, IDC_SELECT_VOICE);
	desc.voice = voice;
	/*std::auto_ptr<char> voice(new char[50]);
	SendDlgItemMessage(window, IDC_SELECT_VOICE, CB_GETLBTEXT, 
		SendDlgItemMessage(window, IDC_SELECT_VOICE, CB_GETCURSEL, 0, 0), 
		reinterpret_cast<long>(voice.get()));
	desc.voice = voice.get();*/

	// get the voice setting sliders
	desc.volume = SendDlgItemMessage(window, IDC_SLIDER_VOLUME, TBM_GETPOS, 0, 0);
	desc.pitch = SendDlgItemMessage(window, IDC_SLIDER_PITCH, TBM_GETPOS, 0, 0);
	desc.rate = SendDlgItemMessage(window, IDC_SLIDER_RATE, TBM_GETPOS, 0, 0);
}

//------------------------------------------------------------------------------
std::wstring DialogConfigEngine::getEngine(HWND window)
{
	WCHAR *text = Hlp_GetDlgItemText(window, IDC_SELECT_ENGINE);
	/*char text[100];
	GetDlgItemText(window, IDC_SELECT_ENGINE, mir_a2u(text), _countof(text));*/

	return text;
}

//------------------------------------------------------------------------------
bool DialogConfigEngine::createTts(HWND window)
{
	VoiceDesc desc;
	getVoiceDesc(window, desc);

	SpeechInterface si;
	m_test_tts = std::auto_ptr<TextToSpeech>(si.createTts(desc.engine));

	if (!m_test_tts.get())
	{
		return false;
	}
	
	si.configureTts(m_test_tts.get(), desc);
	return true;
}

//==============================================================================