#pragma once
// Metin2PythonHost — the 40250 script layer inside the Godot process (docs/PORT-PLAN.md 批次 2P step 4).
//
//   Metin2Pack.initialize(AssetRoot.client_path())   # the packs system.py is read from
//   if Metin2PythonHost.start() == "":
//       var err := Metin2PythonHost.run_main_script("")
//
// Both calls answer with "" on success and with the reason otherwise, so GDScript never has to guess
// from a bool. 2V0-e reaches prototype.RunApp(); until 2V0-f implements the application adapter,
// app.Create reports CREATE_DEVICE and the original script displays its error popup.
//
// This is the only unit that knows both godot-cpp and the port tree: the sequence itself lives in
// platform/ScriptLib/PythonBoot.h, which stays godot-free.

#include <godot_cpp/classes/object.hpp>
#include <godot_cpp/variant/string.hpp>
#include <godot_cpp/variant/array.hpp>
#include <godot_cpp/classes/image.hpp>
#include <godot_cpp/classes/ref.hpp>

namespace mtgodot {

class Metin2PythonHost : public godot::Object {
	GDCLASS(Metin2PythonHost, godot::Object)

public:
	// Stages the standard library (Metin2Python::stdlib_path) when `stdlib_path` is empty, then starts
	// the interpreter. "" on success, including when it was already running.
	static godot::String start(const godot::String &stdlib_path);
	static bool is_running();
	// __DEBUG__, __COMMAND_LINE__ and system.py out of the packs. "" when system.py ran to the end.
	static godot::String run_main_script(const godot::String &command_line);
	// One line of Python in the same __main__ dictionary. "" when it ran.
	static godot::String run_line(const godot::String &source);
	static godot::String evaluate(const godot::String &expression);
	// True while system.py is inside app.Loop(); ui_update() then runs one CPythonApplication::Process().
	static bool is_app_looping();
	static void set_ui_size(int width, int height);
	static void ui_mouse_move(int x, int y);
	static void ui_mouse_button(int button, bool pressed, int x, int y);
	static void ui_key(int key, bool pressed);
	// WM_CHAR (Unicode code point) and WM_KEYDOWN (Win32 VK code) for the 40250 IME.
	static void ui_char(int codepoint);
	static void ui_ime_key(int vkey);
	static void ui_update();
	static godot::Array ui_render_commands();
	// The pixels of a "mem:<id>@<revision>" image command (the CGraphicFontTexture glyph pages) as an
	// RGBA8 Image; null when the texture is gone or its revision is still `known_revision`.
	static godot::Ref<godot::Image> memory_texture(const godot::String &name, int64_t known_revision);
	// The 3D draw calls of the last ui_update() (RenderCommands3D.h), one Dictionary each: "world",
	// "view", "proj" (PackedFloat32Array, D3D row-vector layout), vertex arrays, "indices", "texture0"
	// and the blend/depth/cull/lighting state.
	static godot::Array render3d_draws();
	static godot::String current_map_name();
	static void stop();

protected:
	static void _bind_methods();
};

} // namespace mtgodot