#include "python_host_node.h"

#include <godot_cpp/core/class_db.hpp>

#include "python_stdlib.h"

#ifdef MTGODOT_HAVE_PYTHON
// Standard types only — PythonBoot.h keeps <Python-2.7/*> and the Win32 shims out of this translation
// unit, which has to stay compilable next to godot-cpp.
#include "platform/ScriptLib/PythonBoot.h"
#include <string>
#endif

using namespace godot;

namespace mtgodot {

#ifdef MTGODOT_HAVE_PYTHON

String Metin2PythonHost::start(const String &stdlib_path) {
	String path = stdlib_path;
	if (path.is_empty()) {
		path = Metin2Python::stdlib_path(false);
		if (path.is_empty()) {
			return String("python27.zip unavailable: ") + Metin2Python::last_error();
		}
	}
	std::string error;
	if (!PythonBoot::Start(path.utf8().get_data(), &error)) {
		return String::utf8(error.c_str());
	}
	return String();
}

bool Metin2PythonHost::is_running() {
	return PythonBoot::IsRunning();
}

String Metin2PythonHost::run_main_script(const String &command_line) {
	std::string error;
	if (!PythonBoot::RunMainScript(command_line.utf8().get_data(), &error)) {
		return String::utf8(error.c_str());
	}
	return String();
}

String Metin2PythonHost::run_line(const String &source) {
	std::string error;
	if (!PythonBoot::RunLine(source.utf8().get_data(), &error)) {
		return String::utf8(error.c_str());
	}
	return String();
}

void Metin2PythonHost::stop() {
	PythonBoot::Stop();
}

#else

// Built without -DMTGODOT_EMBED_PYTHON=ON: the class is still registered so GDScript can tell "no
// interpreter in this build" apart from "the interpreter failed to start".
String Metin2PythonHost::start(const String &) {
	return String("this build has no embedded Python (-DMTGODOT_EMBED_PYTHON=ON)");
}

bool Metin2PythonHost::is_running() {
	return false;
}

String Metin2PythonHost::run_main_script(const String &) {
	return String("this build has no embedded Python (-DMTGODOT_EMBED_PYTHON=ON)");
}

String Metin2PythonHost::run_line(const String &) {
	return String("this build has no embedded Python (-DMTGODOT_EMBED_PYTHON=ON)");
}

void Metin2PythonHost::stop() {
}

#endif

void Metin2PythonHost::_bind_methods() {
	ClassDB::bind_static_method("Metin2PythonHost", D_METHOD("start", "stdlib_path"),
							   &Metin2PythonHost::start, DEFVAL(String()));
	ClassDB::bind_static_method("Metin2PythonHost", D_METHOD("is_running"), &Metin2PythonHost::is_running);
	ClassDB::bind_static_method("Metin2PythonHost", D_METHOD("run_main_script", "command_line"),
							   &Metin2PythonHost::run_main_script, DEFVAL(String()));
	ClassDB::bind_static_method("Metin2PythonHost", D_METHOD("run_line", "source"), &Metin2PythonHost::run_line);
	ClassDB::bind_static_method("Metin2PythonHost", D_METHOD("stop"), &Metin2PythonHost::stop);
}

} // namespace mtgodot