/*************************************************************************/
/*  gd_mono.h                                                            */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/

#ifndef GD_MONO_H
#define GD_MONO_H

#include "../godotsharp_defs.h"
#include "gd_mono_assembly.h"
#include "gd_mono_log.h"

#ifdef WINDOWS_ENABLED
#include "../utils/mono_reg_utils.h"
#endif

#define SCRIPTS_DOMAIN GDMono::get_singleton()->get_scripts_domain()
#ifdef TOOLS_ENABLED
#define TOOLS_DOMAIN GDMono::get_singleton()->get_tools_domain()
#endif

class GDMono {

	bool runtime_initialized;
	bool finalizing_scripts_domain;

	MonoDomain *root_domain;
	MonoDomain *scripts_domain;
#ifdef TOOLS_ENABLED
	MonoDomain *tools_domain;
#endif

	GDMonoAssembly *corlib_assembly;
	GDMonoAssembly *api_assembly;
	GDMonoAssembly *project_assembly;
#ifdef TOOLS_ENABLED
	GDMonoAssembly *editor_api_assembly;
	GDMonoAssembly *editor_tools_assembly;
#endif

	HashMap<uint32_t, HashMap<String, GDMonoAssembly *> > assemblies;

	void _domain_assemblies_cleanup(uint32_t p_domain_id);

	bool _load_corlib_assembly();
	bool _load_core_api_assembly();
#ifdef TOOLS_ENABLED
	bool _load_editor_api_assembly();
	bool _load_editor_tools_assembly();
#endif
	bool _load_project_assembly();

	bool _load_all_script_assemblies();

	void _register_internal_calls();

	Error _load_scripts_domain();
	Error _unload_scripts_domain();

#ifdef TOOLS_ENABLED
	Error _load_tools_domain();
#endif

#ifdef DEBUG_METHODS_ENABLED
	uint64_t api_core_hash;
#ifdef TOOLS_ENABLED
	uint64_t api_editor_hash;
#endif
	void _initialize_and_check_api_hashes();
#endif

	GDMonoLog *gdmono_log;

#ifdef WINDOWS_ENABLED
	MonoRegInfo mono_reg_info;
#endif

protected:
	static GDMono *singleton;

public:
#ifdef DEBUG_METHODS_ENABLED
	uint64_t get_api_core_hash() { return api_core_hash; }
#ifdef TOOLS_ENABLED
	uint64_t get_api_editor_hash() { return api_editor_hash; }
#endif
#endif

	static GDMono *get_singleton() { return singleton; }

	// Do not use these, unless you know what you're doing
	void add_assembly(uint32_t p_domain_id, GDMonoAssembly *p_assembly);
	GDMonoAssembly **get_loaded_assembly(const String &p_name);

	_FORCE_INLINE_ bool is_runtime_initialized() const { return runtime_initialized; }
	_FORCE_INLINE_ bool is_finalizing_scripts_domain() const { return finalizing_scripts_domain; }

	_FORCE_INLINE_ MonoDomain *get_scripts_domain() { return scripts_domain; }
#ifdef TOOLS_ENABLED
	_FORCE_INLINE_ MonoDomain *get_tools_domain() { return tools_domain; }
#endif

	_FORCE_INLINE_ GDMonoAssembly *get_corlib_assembly() const { return corlib_assembly; }
	_FORCE_INLINE_ GDMonoAssembly *get_api_assembly() const { return api_assembly; }
	_FORCE_INLINE_ GDMonoAssembly *get_project_assembly() const { return project_assembly; }
#ifdef TOOLS_ENABLED
	_FORCE_INLINE_ GDMonoAssembly *get_editor_api_assembly() const { return editor_api_assembly; }
	_FORCE_INLINE_ GDMonoAssembly *get_editor_tools_assembly() const { return editor_tools_assembly; }
#endif

#ifdef WINDOWS_ENABLED
	const MonoRegInfo &get_mono_reg_info() { return mono_reg_info; }
#endif

	GDMonoClass *get_class(MonoClass *p_raw_class);

#ifdef TOOLS_ENABLED
	Error reload_scripts_domain();
#endif

	bool load_assembly(const String &p_name, GDMonoAssembly **r_assembly, bool p_refonly = false);
	bool load_assembly(const String &p_name, MonoAssemblyName *p_aname, GDMonoAssembly **r_assembly, bool p_refonly = false);
	Error finalize_and_unload_domain(MonoDomain *p_domain);

	void initialize();

	GDMono();
	~GDMono();
};

class GDMonoScopeDomain {

	MonoDomain *prev_domain;

public:
	GDMonoScopeDomain(MonoDomain *p_domain) {
		MonoDomain *prev_domain = mono_domain_get();
		if (prev_domain != p_domain) {
			this->prev_domain = prev_domain;
			mono_domain_set(p_domain, false);
		} else {
			this->prev_domain = NULL;
		}
	}

	~GDMonoScopeDomain() {
		if (prev_domain)
			mono_domain_set(prev_domain, false);
	}
};

#define _GDMONO_SCOPE_DOMAIN_(m_mono_domain)                    \
	GDMonoScopeDomain __gdmono__scope__domain__(m_mono_domain); \
	(void)__gdmono__scope__domain__;

class _GodotSharp : public Object {
	GDCLASS(_GodotSharp, Object)

	friend class GDMono;

	void _dispose_object(Object *p_object);

	void _dispose_callback();

	List<Object *> obj_delete_queue;
	List<NodePath *> np_delete_queue;
	List<RID *> rid_delete_queue;

	bool queue_empty;

#ifndef NO_THREADS
	Mutex *queue_mutex;
#endif

protected:
	static _GodotSharp *singleton;
	static void _bind_methods();

public:
	static _GodotSharp *get_singleton() { return singleton; }

	void attach_thread();
	void detach_thread();

	bool is_finalizing_domain();
	bool is_domain_loaded();

	void queue_dispose(MonoObject *p_mono_object, Object *p_object);
	void queue_dispose(NodePath *p_node_path);
	void queue_dispose(RID *p_rid);

	_GodotSharp();
	~_GodotSharp();
};

#endif // GD_MONO_H