// K-3D
// Copyright (c) 1995-2008, Timothy M. Shead
//
// Contact: tshead@k-3d.com
//
// 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 2 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, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

/** \file
	\author Timothy M. Shead (tshead@k-3d.com)
*/

#include <k3d-i18n-config.h>
#include <k3dsdk/document_plugin_factory.h>
#include <k3dsdk/inetwork_render_frame.h>
#include <k3dsdk/irender_engine_ri.h>
#include <k3dsdk/log.h>
#include <k3dsdk/node.h>
#include <k3dsdk/path.h>
#include <k3dsdk/result.h>
#include <k3dsdk/shader_cache.h>
#include <k3dsdk/share.h>
#include <k3dsdk/system.h>

#include <sstream>

namespace module
{

namespace renderman
{

namespace engine
{

namespace bundled
{

class aqsis :
	public k3d::node,
	public k3d::ri::irender_engine
{
	typedef k3d::node base;

public:
	aqsis(k3d::iplugin_factory& Factory, k3d::idocument& Document) :
		base(Factory, Document)
	{
	}

	k3d::bool_t installed()
	{
		const k3d::filesystem::path aqsis = k3d::system::executable_path().branch_path() / k3d::filesystem::generic_path(k3d::system::executable_name("aqsis"));
		if(!k3d::filesystem::exists(aqsis))
			return false;

		const k3d::filesystem::path aqsl = k3d::system::executable_path().branch_path() / k3d::filesystem::generic_path(k3d::system::executable_name("aqsl"));
		if(!k3d::filesystem::exists(aqsl))
			return false;

		return true;
	}

	k3d::bool_t compile_shader(const k3d::filesystem::path& Shader)
	{
		const k3d::filesystem::path aqsl = k3d::system::executable_path().branch_path() / k3d::filesystem::generic_path("aqsl");

		const k3d::filesystem::path shader_source_path = Shader;
		const k3d::filesystem::path shader_binary_path = k3d::shader_cache_path() / k3d::filesystem::generic_path(k3d::filesystem::replace_extension(Shader, ".slx").leaf());
		const k3d::filesystem::path shader_source_directory = Shader.branch_path();
		const k3d::filesystem::path global_source_directory = k3d::share_path() / k3d::filesystem::generic_path("shaders");

		if(k3d::filesystem::up_to_date(shader_source_path, shader_binary_path))
			return true;

		std::ostringstream command_line;
		command_line << "\"" << aqsl.native_filesystem_string() << "\"";
		command_line << " -I\"" << shader_source_directory.native_filesystem_string()  << "\"";
		command_line << " -I\"" << global_source_directory.native_filesystem_string()  << "\"";
		command_line << " -o \"" << shader_binary_path.native_filesystem_string() << "\"";
		command_line << " \"" << shader_source_path.native_filesystem_string() << "\"";

		return_val_if_fail(k3d::system::spawn_sync(command_line.str()), false);

		return true;
	}

	k3d::bool_t render(k3d::inetwork_render_frame& Frame, const k3d::filesystem::path& RIB)
	{
		const k3d::filesystem::path aqsis = k3d::system::executable_path().branch_path() / k3d::filesystem::generic_path("aqsis");
		const k3d::filesystem::path displays = k3d::system::executable_path().branch_path();
		const k3d::filesystem::path procedurals = k3d::system::executable_path().branch_path();
		const k3d::filesystem::path plugins = k3d::system::executable_path().branch_path();
		const k3d::filesystem::path shaders = k3d::shader_cache_path();

		k3d::inetwork_render_frame::environment environment;

		k3d::inetwork_render_frame::arguments arguments;
		arguments.push_back(k3d::inetwork_render_frame::argument("-displays=\"" + displays.native_filesystem_string() + "\""));
		arguments.push_back(k3d::inetwork_render_frame::argument("-procedurals=\"" + procedurals.native_filesystem_string() + "\""));
		arguments.push_back(k3d::inetwork_render_frame::argument("-plugins=\"" + plugins.native_filesystem_string() + "\""));
		arguments.push_back(k3d::inetwork_render_frame::argument("-shaders=\"" + shaders.native_filesystem_string() + "\""));
		arguments.push_back(k3d::inetwork_render_frame::argument(RIB.native_filesystem_string()));

		Frame.add_exec_command(aqsis.native_filesystem_string(), environment, arguments);

		return true;
	}

	static k3d::iplugin_factory& get_factory()
	{
		static k3d::document_plugin_factory<aqsis,
			k3d::interface_list<k3d::ri::irender_engine> > factory(
				k3d::uuid(0x1197f6b5, 0x44e6fb49, 0x638aaea1, 0x7a3dac64),
				"BundledAqsisRenderManEngine",
				_("Provides render integration with a bundled copy of Aqsis, http://www.aqsis.org"),
				"RenderMan",
				k3d::iplugin_factory::STABLE
				);

		return factory;
	}
};

/////////////////////////////////////////////////////////////////////////////
// aqsis_factory

k3d::iplugin_factory& aqsis_factory()
{
	return aqsis::get_factory();
}

} // namespace bundled

} // namespace engine

} // namespace renderman

} // namespace module

