// XCCalendarManipulator.cpp - Xestia Calendar XCCalendarManipulator widget class.
//
// (c) 2016 Xestia Software Development.
//
// This file is part of Xestia Calendar.
//
// Xestia Address Book is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by the
// Free Software Foundation, version 3 of the license.
//
// Xestia Address Book is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with Xestia Calendar. If not, see <http://www.gnu.org/licenses/> 

#include "XCCalendarManipulator.h"

wxDEFINE_EVENT(XCCALENDARMANIPULATOR_CHANGEGRID, wxCommandEvent);

using namespace std;

XCCalendarManipulator::XCCalendarManipulator(wxWindow* parent, const wxString& title, 
	const wxPoint& pos, const wxSize& size, CalendarDataStorage *dataStorage)
        : wxPanel(parent, wxID_ANY, pos, size, wxTAB_TRAVERSAL, title){
	szrMain = new wxBoxSizer( wxVERTICAL );
	pnlMain = new wxPanel(this, wxID_ANY, wxDefaultPosition, wxSize(500, 50), wxTAB_TRAVERSAL);
#if defined(__APPLE__)
	pnlMain->SetBackgroundColour(wxColour(120,120,120));
#else
	pnlMain->SetBackgroundColour(wxColour(40,40,40));
#endif
	this->SetSizer(szrMain);
	szrMain->Add(pnlMain, 0, wxEXPAND, 0);
	
	// Setup the navigation section.
		
	szrNavigation = new wxBoxSizer( wxHORIZONTAL );
	pnlMain->SetSizer(szrNavigation);
		
	// Add next month and previous month buttons.
		
	previousButton = new wxButton(pnlMain, wxID_ANY, wxT(""), wxDefaultPosition, wxSize(32,32), 0|wxNO_BORDER);
	nextButton = new wxButton(pnlMain, wxID_ANY, wxT(""), wxDefaultPosition, wxSize(32,32), 0|wxNO_BORDER);
	calendarsButton = new wxButton(pnlMain, wxID_ANY, wxT(""), wxDefaultPosition, wxSize(32,32), 0|wxNO_BORDER);
	
	wxMemoryInputStream previousIcon(icons_previous_png, sizeof(icons_previous_png));
	wxMemoryInputStream nextIcon(icons_next_png, sizeof(icons_next_png));
	wxMemoryInputStream calendarsIcon(icons_calendars_png, sizeof(icons_calendars_png));
		
	wxImage icons_previous_png(previousIcon, wxBITMAP_TYPE_PNG);
	previousIconBitmap = wxBitmap(icons_previous_png, -1);

	wxImage icons_next_png(nextIcon, wxBITMAP_TYPE_PNG);
	nextIconBitmap = wxBitmap(icons_next_png, -1);

	wxImage icons_calendars_png(calendarsIcon, wxBITMAP_TYPE_PNG);
	calendarsIconBitmap = wxBitmap(icons_calendars_png, -1);

	previousButton->SetBitmap(previousIconBitmap);
	nextButton->SetBitmap(nextIconBitmap);
	calendarsButton->SetBitmap(calendarsIconBitmap);
	previousButton->SetBackgroundColour(pnlMain->GetBackgroundColour());
	nextButton->SetBackgroundColour(pnlMain->GetBackgroundColour());
	calendarsButton->SetBackgroundColour(pnlMain->GetBackgroundColour());
		
	// Setup the static text.
		
	dateButton = new wxButton(pnlMain, wxID_ANY, wxT(""), wxDefaultPosition, wxDefaultSize, 0|wxNO_BORDER);
		
	wxFont test;
	
	test.SetWeight(wxFONTWEIGHT_BOLD);
	test.SetPointSize(18);
		
	dateButton->SetFont(test);
	dateButton->SetForegroundColour(wxColour(255,255,255));
	dateButton->SetBackgroundColour(pnlMain->GetBackgroundColour());
	
	// Setup the manipulator control.

	szrNavigation->Add(previousButton, 0, wxALL|wxALIGN_CENTER_VERTICAL, 5);
	szrNavigation->Add(calendarsButton, 0, wxALL|wxALIGN_CENTER_VERTICAL, 5);
	szrNavigation->Add( 0, 0, 1, wxEXPAND, 5 );
	szrNavigation->Add(dateButton, 0, wxALL|wxALIGN_CENTER_VERTICAL, 5 );
	szrNavigation->Add( 0, 0, 1, wxEXPAND, 5 );
	szrNavigation->Add(nextButton, 0, wxALL|wxALIGN_CENTER_VERTICAL, 5);
	szrNavigation->Layout();
		
	// Setup the month selection control.
	
	wxDateTime dtNow = wxDateTime::Now();

#if defined(WIN32) || defined(__APPLE__)
	moo = new frmCalendarSelectMonth(this);
#else
	moo = new XCCalendarMonthSelect(this);
#endif
	month = ((int)dtNow.GetMonth() + 1);
	year = dtNow.GetYear();
	moo->UpdateDate(month, year);
	UpdateDateButtonText();
	
	// Setup the calendars list.
	
	calendarList = new XCCalendarList(this);
	
	// Setup the calendar data storage pointer.
	
	this->dataStorage = dataStorage;
		
	// Setup the event controls.

	dateButton->Connect(wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler(XCCalendarManipulator::DateTextClick), NULL, this);
	nextButton->Connect(wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler(XCCalendarManipulator::NextMonth), NULL, this);
	calendarsButton->Connect(wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler(XCCalendarManipulator::ShowCalendarsList), NULL, this);
	previousButton->Connect(wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler(XCCalendarManipulator::PreviousMonth), NULL, this);
	
#if defined(WIN32)
	dateButton->Connect(wxEVT_ENTER_WINDOW, wxMouseEventHandler(XCCalendarManipulator::ButtonMouseover), NULL, this);
	dateButton->Connect(wxEVT_LEAVE_WINDOW, wxMouseEventHandler(XCCalendarManipulator::ButtonMouseout), NULL, this);
	nextButton->Connect(wxEVT_ENTER_WINDOW, wxMouseEventHandler(XCCalendarManipulator::ButtonMouseover), NULL, this);
	nextButton->Connect(wxEVT_LEAVE_WINDOW, wxMouseEventHandler(XCCalendarManipulator::ButtonMouseout), NULL, this);
	calendarsButton->Connect(wxEVT_ENTER_WINDOW, wxMouseEventHandler(XCCalendarManipulator::ButtonMouseover), NULL, this);
	calendarsButton->Connect(wxEVT_LEAVE_WINDOW, wxMouseEventHandler(XCCalendarManipulator::ButtonMouseout), NULL, this);
	previousButton->Connect(wxEVT_ENTER_WINDOW, wxMouseEventHandler(XCCalendarManipulator::ButtonMouseover), NULL, this);
	previousButton->Connect(wxEVT_LEAVE_WINDOW, wxMouseEventHandler(XCCalendarManipulator::ButtonMouseout), NULL, this);
#endif

	Bind(XCCALENDARMANIPULATOR_CHANGEGRID, &XCCalendarManipulator::ChangeGrid, this, ID_CHANGEGRID);

	this->Refresh();
}

XCCalendarManipulator::~XCCalendarManipulator(){
	
	// Destory the controls from the widget.

	dateButton->Disconnect(wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler(XCCalendarManipulator::DateTextClick), NULL, this);
	nextButton->Disconnect(wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler(XCCalendarManipulator::NextMonth), NULL, this);
	calendarsButton->Disconnect(wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler(XCCalendarManipulator::ShowCalendarsList), NULL, this);
	previousButton->Disconnect(wxEVT_COMMAND_BUTTON_CLICKED, wxCommandEventHandler(XCCalendarManipulator::PreviousMonth), NULL, this);
	
#if defined(WIN32)
	dateButton->Disconnect(wxEVT_ENTER_WINDOW, wxMouseEventHandler(XCCalendarManipulator::ButtonMouseover), NULL, this);
	dateButton->Disconnect(wxEVT_LEAVE_WINDOW, wxMouseEventHandler(XCCalendarManipulator::ButtonMouseout), NULL, this);
	nextButton->Disconnect(wxEVT_ENTER_WINDOW, wxMouseEventHandler(XCCalendarManipulator::ButtonMouseover), NULL, this);
	nextButton->Disconnect(wxEVT_LEAVE_WINDOW, wxMouseEventHandler(XCCalendarManipulator::ButtonMouseout), NULL, this);
	calendarsButton->Disconnect(wxEVT_ENTER_WINDOW, wxMouseEventHandler(XCCalendarManipulator::ButtonMouseover), NULL, this);
	calendarsButton->Disconnect(wxEVT_LEAVE_WINDOW, wxMouseEventHandler(XCCalendarManipulator::ButtonMouseout), NULL, this);
	previousButton->Disconnect(wxEVT_ENTER_WINDOW, wxMouseEventHandler(XCCalendarManipulator::ButtonMouseover), NULL, this);
	previousButton->Disconnect(wxEVT_LEAVE_WINDOW, wxMouseEventHandler(XCCalendarManipulator::ButtonMouseout), NULL, this);
#endif
	
	Unbind(XCCALENDARMANIPULATOR_CHANGEGRID, &XCCalendarManipulator::ChangeGrid, this, ID_CHANGEGRID);

	// Delete the buttons in pnlMain.
	
	szrNavigation->Clear();
	
	delete previousButton;
	previousButton = nullptr;
	
	delete nextButton;
	nextButton = nullptr;
	
	delete calendarsButton;
	calendarsButton = nullptr;
	
	delete dateButton;
	dateButton = nullptr;
	
	// Delete szrNavigation.
	
	szrMain->Clear();
	pnlMain->SetSizer(nullptr, true);
	
	// Delete pnlMain itself;
	
	delete pnlMain;
	pnlMain = nullptr;

	delete moo;
	moo = nullptr;

	delete calendarList;
	calendarList = nullptr;
	
	// Delete szrMain itself;
	
	this->SetSizer(nullptr, true);

	dataStorage = nullptr;
	
}

void XCCalendarManipulator::DateTextClick(wxCommandEvent &event){
	
	// Bring up a popup control to select the month and year.
	
	// Do something different for Win32 and macOS.

	moo->SetPosition(wxPoint(dateButton->GetScreenRect().GetLeft(), dateButton->GetScreenRect().GetBottom()));
	moo->UpdateDate(month, year);
#if defined(WIN32) || defined(__APPLE__)
	moo->ShowModal();
#else
	moo->Popup();
#endif

}

void XCCalendarManipulator::ChangeGrid(wxCommandEvent &event){
	
	if (month == moo->GetMonth() && year == moo->GetYear()){
		return;
	}
	
	month = moo->GetMonth();
	year = moo->GetYear();
	
	// Post an event to the parent control to update the grid.
	
	wxCommandEvent changeGrid(XCCALENDARCTRL_CHANGEGRID);
	changeGrid.SetId(ID_CHANGEGRID);
	wxPostEvent(this->GetParent(), changeGrid);
	
	UpdateDateButtonText();
	
}

void XCCalendarManipulator::NextMonth(wxCommandEvent &event){
	
	int newMonth = 1;
	int newYear = 0;
	
	// Get the current month and year.
	
	newMonth = moo->GetMonth();
	newYear = moo->GetYear();

	if (newMonth == 12){
		newMonth = 1;
		newYear++;
	} else {
		newMonth++;
	}
	
	month = newMonth;
	year = newYear;

	moo->UpdateDate(month, year);
	
	// Post an event to the parent control to update the grid.
	
	wxCommandEvent changeGrid(XCCALENDARCTRL_CHANGEGRID);
	changeGrid.SetId(ID_CHANGEGRID);
	wxPostEvent(this->GetParent(), changeGrid);

	UpdateDateButtonText();
	
}

void XCCalendarManipulator::PreviousMonth(wxCommandEvent &event){
	
	int newMonth = 1;
	int newYear = 0;
	
	// Get the current month and year.
	
	newMonth = moo->GetMonth();
	newYear = moo->GetYear();

	if (newMonth == 1){
		newMonth = 12;
		newYear--;
	} else {
		newMonth--;
	}

	month = newMonth;
	year = newYear;
	
	moo->UpdateDate(month, year);
	
	// Post an event to the parent control to update the grid.
	
	wxCommandEvent changeGrid(XCCALENDARCTRL_CHANGEGRID);
	changeGrid.SetId(ID_CHANGEGRID);
	wxPostEvent(this->GetParent(), changeGrid);
	
	UpdateDateButtonText();
	
}

void XCCalendarManipulator::ShowCalendarsList(wxCommandEvent &event){
	
	// Update the list of calendars before showing.
	
	calendarList->SetPosition(wxPoint(calendarsButton->GetScreenRect().GetLeft(), calendarsButton->GetScreenRect().GetBottom()));
	calendarList->UpdateCalendarList(dataStorage);
#if defined(__APPLE__)

	if (calendarListShow == false)
	{
		calendarList->Show();
	        calendarListShow = true;
	}
	else
	{
		calendarList->Hide();
		calendarListShow = false;
	}
#else
	calendarList->Popup();
#endif
    
}

void XCCalendarManipulator::UpdateDateButtonText(){
	
	// Update the date text.
	
	string newDateText = "";
	
	switch (moo->GetMonth()){
		case 1:
			newDateText = _("January");
			break;
		case 2:
			newDateText = _("February");
			break;
		case 3:
			newDateText = _("March");
			break;
		case 4:
			newDateText = _("April");
			break;
		case 5:
			newDateText = _("May");
			break;
		case 6:
			newDateText = _("June");
			break;
		case 7:
			newDateText = _("July");
			break;
		case 8:
			newDateText = _("August");
			break;
		case 9:
			newDateText = _("September");
			break;
		case 10:
			newDateText = _("October");
			break;
		case 11:
			newDateText = _("November");
			break;
		case 12:
			newDateText = _("December");
			break;
	}
	
	newDateText += " ";
	
	newDateText += to_string(year);
	
	dateButton->SetLabel(newDateText);
	szrMain->Layout();
	
}

int XCCalendarManipulator::GetMonth(){
	
	return month;
	
}

int XCCalendarManipulator::GetYear(){
	
	return year;
	
}

vector<int> XCCalendarManipulator::GetHiddenAccountsList(){
	
	return calendarList->GetHiddenAccountsList();
	
}

vector<int> XCCalendarManipulator::GetHiddenCalendarsList(){
	
	return calendarList->GetHiddenCalendarsList();
	
}

void XCCalendarManipulator::ButtonMouseover(wxMouseEvent &event)
{
	wxWindow *eventObject = (wxWindow*)event.GetEventObject();
	eventObject->SetWindowStyle(0 | wxSIMPLE_BORDER);
}

void XCCalendarManipulator::ButtonMouseout(wxMouseEvent &event)
{
	wxWindow *eventObject = (wxWindow*)event.GetEventObject();
	eventObject->SetWindowStyle(0 | wxNO_BORDER);
}