// Copyright (c) 2005, Rodrigo Braz Monteiro
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//   * Redistributions of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//   * Redistributions in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//   * Neither the name of the Aegisub Group nor the names of its contributors
//     may be used to endorse or promote products derived from this software
//     without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// POSSIBILITY OF SUCH DAMAGE.
//
// Aegisub Project http://www.aegisub.org/

/// @file video_box.cpp
/// @brief The video area in the main window, including surrounding tool bars
/// @ingroup main_ui video
///

#include "config.h"

#include <wx/combobox.h>
#include <wx/sizer.h>
#include <wx/statline.h>
#include <wx/textctrl.h>
#include <wx/toolbar.h>

#include "video_box.h"

#include "include/aegisub/context.h"
#include "include/aegisub/toolbar.h"

#include "ass_dialogue.h"
#include "ass_file.h"
#include "command/command.h"
#include "compat.h"
#include "libresrc/libresrc.h"
#include "options.h"
#include "selection_controller.h"
#include "video_context.h"
#include "video_display.h"
#include "video_slider.h"

VideoBox::VideoBox(wxWindow *parent, bool isDetached, agi::Context *context)
: wxPanel(parent,-1)
, context(context)
{
	// Seek
	auto videoSlider = new VideoSlider(this, context);
	videoSlider->SetToolTip(_("Seek video"));

	// Buttons
	wxToolBar *mainToolbar = toolbar::GetToolbar(this, "video", context, "Video", false);

	// Position
	VideoPosition = new wxTextCtrl(this,-1,"",wxDefaultPosition,wxSize(110,20),wxTE_READONLY);
	VideoPosition->SetToolTip(_("Current frame time and number"));

	// Times of sub relative to video
	VideoSubsPos = new wxTextCtrl(this,-1,"",wxDefaultPosition,wxSize(110,20),wxTE_READONLY);
	VideoSubsPos->SetToolTip(_("Time of this frame relative to start and end of current subs"));

	// Zoom box
	wxArrayString choices;
	for (int i = 1 ; i <= 24; ++i)
		choices.Add(wxString::Format("%g%%", i * 12.5));
	wxComboBox *zoomBox = new wxComboBox(this, -1, "75%", wxDefaultPosition, wxDefaultSize, choices, wxCB_DROPDOWN | wxTE_PROCESS_ENTER);

	// Typesetting buttons
	wxToolBar *visualToolBar = toolbar::GetToolbar(this, "visual_tools", context, "Video", true);

	// Visual controls sub-toolbar
	wxToolBar *visualSubToolBar = new wxToolBar(this, -1, wxDefaultPosition, wxDefaultSize, wxTB_VERTICAL | wxTB_BOTTOM | wxTB_FLAT);

	auto videoDisplay = new VideoDisplay(visualSubToolBar, isDetached, zoomBox, this, context);
	videoDisplay->MoveBeforeInTabOrder(videoSlider);

	wxSizer *toolbarSizer = new wxBoxSizer(wxVERTICAL);
	toolbarSizer->Add(visualToolBar, wxSizerFlags(1));
	toolbarSizer->Add(visualSubToolBar, wxSizerFlags());

	// Top sizer
	wxSizer *topSizer = new wxBoxSizer(wxHORIZONTAL);
	topSizer->Add(toolbarSizer, 0, wxEXPAND);
	topSizer->Add(videoDisplay, isDetached, isDetached ? wxEXPAND : 0);

	// Sizers
	wxSizer *videoSliderSizer = new wxBoxSizer(wxHORIZONTAL);
	videoSliderSizer->Add(videoSlider, wxSizerFlags(1).Expand());

	wxSizer *videoBottomSizer = new wxBoxSizer(wxHORIZONTAL);
	videoBottomSizer->Add(mainToolbar, wxSizerFlags(0).Center());
	videoBottomSizer->Add(VideoPosition, wxSizerFlags(1).Center().Border(wxLEFT));
	videoBottomSizer->Add(VideoSubsPos, wxSizerFlags(1).Center().Border(wxLEFT));
	videoBottomSizer->Add(zoomBox, wxSizerFlags(0).Center().Border(wxLEFT | wxRIGHT));

	wxSizer *VideoSizer = new wxBoxSizer(wxVERTICAL);
	VideoSizer->Add(topSizer, 1, wxEXPAND, 0);
	VideoSizer->Add(new wxStaticLine(this), 0, wxEXPAND, 0);
	VideoSizer->Add(videoSliderSizer,0,wxEXPAND,0);
	VideoSizer->Add(videoBottomSizer,0,wxEXPAND | wxBOTTOM,5);
	SetSizer(VideoSizer);

	UpdateTimeBoxes();

	slots.push_back(context->videoController->AddSeekListener(&VideoBox::UpdateTimeBoxes, this));
	slots.push_back(context->videoController->AddKeyframesListener(&VideoBox::UpdateTimeBoxes, this));
	slots.push_back(context->videoController->AddTimecodesListener(&VideoBox::UpdateTimeBoxes, this));
	slots.push_back(context->videoController->AddVideoOpenListener(&VideoBox::UpdateTimeBoxes, this));
	slots.push_back(context->ass->AddCommitListener(&VideoBox::UpdateTimeBoxes, this));
	slots.push_back(context->selectionController->AddSelectionListener(&VideoBox::UpdateTimeBoxes, this));
}

void VideoBox::UpdateTimeBoxes() {
	if (!context->videoController->IsLoaded()) return;

	int frame = context->videoController->GetFrameN();
	int time = context->videoController->TimeAtFrame(frame, agi::vfr::EXACT);

	// Set the text box for frame number and time
	VideoPosition->SetValue(wxString::Format("%s - %d", AssTime(time).GetAssFormated(true), frame));
	if (binary_search(context->videoController->GetKeyFrames().begin(), context->videoController->GetKeyFrames().end(), frame)) {
		// Set the background color to indicate this is a keyframe
		VideoPosition->SetBackgroundColour(to_wx(OPT_GET("Colour/Subtitle Grid/Background/Selection")->GetColor()));
		VideoPosition->SetForegroundColour(to_wx(OPT_GET("Colour/Subtitle Grid/Selection")->GetColor()));
	}
	else {
		VideoPosition->SetBackgroundColour(wxNullColour);
		VideoPosition->SetForegroundColour(wxNullColour);
	}

	AssDialogue *active_line = context->selectionController->GetActiveLine();
	if (!active_line)
		VideoSubsPos->SetValue("");
	else {
		VideoSubsPos->SetValue(wxString::Format(
			"%+dms; %+dms",
			time - active_line->Start,
			time - active_line->End));
	}
}