/*
    Copyright (C) 2015-2020 Carl Hetherington <cth@carlh.net>

    This file is part of DCP-o-matic.

    DCP-o-matic 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; either version 2 of the License, or
    (at your option) any later version.

    DCP-o-matic 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 DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.

*/

#include "kdm_timing_panel.h"
#include "wx_util.h"
#include "time_picker.h"
#include "static_text.h"
#include "lib/warnings.h"
DCPOMATIC_DISABLE_WARNINGS
#include <wx/datectrl.h>
#include <wx/dateevt.h>
DCPOMATIC_ENABLE_WARNINGS

using std::cout;
using boost::bind;

KDMTimingPanel::KDMTimingPanel (wxWindow* parent)
	: wxPanel (parent, wxID_ANY)
{
	wxBoxSizer* overall_sizer = new wxBoxSizer (wxVERTICAL);

#ifdef __WXGTK3__
	/* wxDatePickerCtrl is too small with the GTK3 backend so we need to make it bigger with some fudge factors */
	wxClientDC dc (parent);
	wxSize size = dc.GetTextExtent (wxT("99/99/9999"));
	size.SetWidth (size.GetWidth() * 1.75);
	size.SetHeight (-1);
#else
	wxSize size = wxDefaultSize;
#endif

	wxSizer* table = new wxBoxSizer (wxHORIZONTAL);
	add_label_to_sizer (table, this, _("From"), true, 0, wxLEFT | wxRIGHT | wxALIGN_CENTRE_VERTICAL);
	wxDateTime from;
	from.SetToCurrent ();
	_from_date = new wxDatePickerCtrl (this, wxID_ANY, from, wxDefaultPosition, size);
	table->Add (_from_date, 0, wxALIGN_CENTER_VERTICAL);

#ifdef __WXGTK3__
	_from_time = new TimePickerText (this, from);
#else
	_from_time = new TimePickerSpin (this, from);
#endif

#ifdef DCPOMATIC_OSX
	/* Hack to tweak alignment, which I can't get right by "proper" means for some reason */
	table->Add (_from_time, 0, wxALIGN_CENTER_VERTICAL | wxTOP, 4);
#else
	table->Add (_from_time, 0, wxALIGN_CENTER_VERTICAL);
#endif

	add_label_to_sizer (table, this, _("until"), true, 0, wxLEFT | wxRIGHT | wxALIGN_CENTRE_VERTICAL);
	wxDateTime to = from;
	/* 1 week from now */
	to.Add (wxDateSpan (0, 0, 1, 0));
	_until_date = new wxDatePickerCtrl (this, wxID_ANY, to, wxDefaultPosition, size);
	table->Add (_until_date, 0, wxALIGN_CENTER_VERTICAL);

#ifdef __WXGTK3__
	_until_time = new TimePickerText (this, to);
#else
	_until_time = new TimePickerSpin (this, to);
#endif

#ifdef DCPOMATIC_OSX
	table->Add (_until_time, 0, wxALIGN_CENTER_VERTICAL | wxTOP, 4);
#else
	table->Add (_until_time, 0, wxALIGN_CENTER_VERTICAL);
#endif

	overall_sizer->Add (table);

	_warning = new StaticText (this, wxT(""));
	overall_sizer->Add (_warning, 0, wxTOP, DCPOMATIC_SIZER_GAP);
	wxFont font = _warning->GetFont();
	font.SetStyle(wxFONTSTYLE_ITALIC);
	font.SetPointSize(font.GetPointSize() - 1);
	_warning->SetForegroundColour (wxColour (255, 0, 0));
	_warning->SetFont(font);

	/* I said I've been to the year 3000.  Not much has changed but they live underwater.  And your In-in-in-interop DCP
           is pretty fine.
	 */
	_from_date->SetRange(wxDateTime(1, wxDateTime::Jan, 1900, 0, 0, 0, 0), wxDateTime(31, wxDateTime::Dec, 3000, 0, 0, 0, 0));
	_until_date->SetRange(wxDateTime(1, wxDateTime::Jan, 1900, 0, 0, 0, 0), wxDateTime(31, wxDateTime::Dec, 3000, 0, 0, 0, 0));

	_from_date->Bind (wxEVT_DATE_CHANGED, bind (&KDMTimingPanel::changed, this));
	_until_date->Bind (wxEVT_DATE_CHANGED, bind (&KDMTimingPanel::changed, this));
	_from_time->Changed.connect (bind (&KDMTimingPanel::changed, this));
	_until_time->Changed.connect (bind (&KDMTimingPanel::changed, this));

	SetSizer (overall_sizer);
}

boost::posix_time::ptime
KDMTimingPanel::from () const
{
	return posix_time (_from_date, _from_time);
}

boost::posix_time::ptime
KDMTimingPanel::posix_time (wxDatePickerCtrl* date_picker, TimePicker* time_picker)
{
	wxDateTime const date = date_picker->GetValue ();
	return boost::posix_time::ptime (
		boost::gregorian::date (date.GetYear(), date.GetMonth() + 1, date.GetDay()),
		boost::posix_time::time_duration (time_picker->hours(), time_picker->minutes(), 0)
		);
}

boost::posix_time::ptime
KDMTimingPanel::until () const
{
	return posix_time (_until_date, _until_time);
}

bool
KDMTimingPanel::valid () const
{
	return until() > from();
}

void
KDMTimingPanel::changed () const
{
	if (valid ()) {
		_warning->SetLabel (wxT (""));
	} else {
		_warning->SetLabel (_("The 'until' time must be after the 'from' time."));
	}

	TimingChanged ();
}