/*
 * Oak Video Editor - Non-Linear Video Editor
 * Copyright (C) 2025 Olive CE Team
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "nodeparamviewcontext.h"

#include <QMessageBox>

#include "node/block/clip/clip.h"
#include "node/factory.h"
#include "node/nodeundo.h"

namespace olive
{

#define super NodeParamViewItemBase

NodeParamViewContext::NodeParamViewContext(QWidget *parent)
	: super(parent)
	, type_(Track::kNone)
{
	QWidget *body = new QWidget();
	QHBoxLayout *body_layout = new QHBoxLayout(body);
	SetBody(body);

	dock_area_ = new NodeParamViewDockArea();
	body_layout->addWidget(dock_area_);

	setBackgroundRole(QPalette::Base);

	Retranslate();

	connect(title_bar(), &NodeParamViewItemTitleBar::AddEffectButtonClicked,
			this, &NodeParamViewContext::AddEffectButtonClicked);
}

NodeParamViewItem *NodeParamViewContext::GetItem(Node *node, Node *ctx)
{
	for (auto it = items_.begin(); it != items_.end(); it++) {
		NodeParamViewItem *item = *it;

		if (item->GetNode() == node && item->GetContext() == ctx) {
			return item;
		}
	}

	return nullptr;
}

void NodeParamViewContext::AddNode(NodeParamViewItem *item)
{
	items_.append(item);
	dock_area_->AddItem(item);
}

void NodeParamViewContext::RemoveNode(Node *node, Node *ctx)
{
	for (auto it = items_.begin(); it != items_.end();) {
		NodeParamViewItem *item = *it;

		if (item->GetNode() == node && item->GetContext() == ctx) {
			emit AboutToDeleteItem(item);
			delete item;
			it = items_.erase(it);
		} else {
			it++;
		}
	}
}

void NodeParamViewContext::RemoveNodesWithContext(Node *ctx)
{
	for (auto it = items_.begin(); it != items_.end();) {
		NodeParamViewItem *item = *it;

		if (item->GetContext() == ctx) {
			emit AboutToDeleteItem(item);
			delete item;
			it = items_.erase(it);
		} else {
			it++;
		}
	}
}

void NodeParamViewContext::SetInputChecked(const NodeInput &input, bool e)
{
	foreach (NodeParamViewItem *item, items_) {
		if (item->GetNode() == input.node()) {
			item->SetInputChecked(input, e);
		}
	}
}

void NodeParamViewContext::SetTimebase(const rational &timebase)
{
	foreach (NodeParamViewItem *item, items_) {
		item->SetTimebase(timebase);
	}
}

void NodeParamViewContext::SetTimeTarget(ViewerOutput *n)
{
	foreach (NodeParamViewItem *item, items_) {
		item->SetTimeTarget(n);
	}
}

void NodeParamViewContext::SetEffectType(Track::Type type)
{
	type_ = type;
}

void NodeParamViewContext::Retranslate()
{
}

void NodeParamViewContext::AddEffectButtonClicked()
{
	Node::Flag flag = Node::kNone;

	if (type_ == Track::kVideo) {
		flag = Node::kVideoEffect;
	} else {
		flag = Node::kAudioEffect;
	}

	if (flag == Node::kNone) {
		return;
	}

	Menu *m =
		NodeFactory::CreateMenu(this, false, Node::kCategoryUnknown, flag);
	connect(m, &Menu::triggered, this,
			&NodeParamViewContext::AddEffectMenuItemTriggered);
	m->exec(QCursor::pos());
	delete m;
}

void NodeParamViewContext::AddEffectMenuItemTriggered(QAction *a)
{
	Node *n = NodeFactory::CreateFromMenuAction(a);

	if (n) {
		NodeInput new_node_input = n->GetEffectInput();
		MultiUndoCommand *command = new MultiUndoCommand();

		QVector<Project *> graphs_added_to;

		foreach (Node *ctx, contexts_) {
			NodeInput ctx_input = ctx->GetEffectInput();

			if (!graphs_added_to.contains(ctx->parent())) {
				command->add_child(new NodeAddCommand(ctx->parent(), n));
				graphs_added_to.append(ctx->parent());
			}

			command->add_child(new NodeSetPositionCommand(
				n, ctx, ctx->GetNodePositionInContext(ctx)));
			command->add_child(new NodeSetPositionCommand(
				ctx, ctx, ctx->GetNodePositionInContext(ctx) + QPointF(1, 0)));

			if (ctx_input.IsConnected()) {
				Node *prev_output = ctx_input.GetConnectedOutput();

				command->add_child(
					new NodeEdgeRemoveCommand(prev_output, ctx_input));
				command->add_child(
					new NodeEdgeAddCommand(prev_output, new_node_input));
			}

			command->add_child(new NodeEdgeAddCommand(n, ctx_input));
		}

		Core::instance()->undo_stack()->push(
			command, tr("Added %1 to Node Chain").arg(n->Name()));
	}
}

}
