/*************************************************************************/
/*  project_settings.cpp                                                 */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2017 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.                */
/*************************************************************************/
#include "project_settings.h"

#include "bind/core_bind.h"
#include "core_string_names.h"
#include "io/file_access_network.h"
#include "io/file_access_pack.h"
#include "io/marshalls.h"
#include "os/dir_access.h"
#include "os/file_access.h"
#include "os/keyboard.h"
#include "os/os.h"
#include "variant_parser.h"
#include <zlib.h>

#define FORMAT_VERSION 3

ProjectSettings *ProjectSettings::singleton = NULL;

ProjectSettings *ProjectSettings::get_singleton() {

	return singleton;
}

String ProjectSettings::get_resource_path() const {

	return resource_path;
};

String ProjectSettings::localize_path(const String &p_path) const {

	if (resource_path == "")
		return p_path; //not initialied yet

	if (p_path.begins_with("res://") || p_path.begins_with("user://") ||
			(p_path.is_abs_path() && !p_path.begins_with(resource_path)))
		return p_path.simplify_path();

	DirAccess *dir = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);

	String path = p_path.replace("\\", "/").simplify_path();

	if (dir->change_dir(path) == OK) {

		String cwd = dir->get_current_dir();
		cwd = cwd.replace("\\", "/");

		memdelete(dir);

		if (!cwd.begins_with(resource_path)) {
			return p_path;
		};

		return cwd.replace_first(resource_path, "res:/");
	} else {

		memdelete(dir);

		int sep = path.find_last("/");
		if (sep == -1) {
			return "res://" + path;
		};

		String parent = path.substr(0, sep);

		String plocal = localize_path(parent);
		if (plocal == "") {
			return "";
		};
		return plocal + path.substr(sep, path.size() - sep);
	};
}

void ProjectSettings::set_initial_value(const String &p_name, const Variant &p_value) {

	ERR_FAIL_COND(!props.has(p_name));
	props[p_name].initial = p_value;
}

String ProjectSettings::globalize_path(const String &p_path) const {

	if (p_path.begins_with("res://")) {

		if (resource_path != "") {

			return p_path.replace("res:/", resource_path);
		};
		return p_path.replace("res://", "");
	} else if (p_path.begins_with("user://")) {

		String data_dir = OS::get_singleton()->get_data_dir();
		if (data_dir != "") {

			return p_path.replace("user:/", data_dir);
		};
		return p_path.replace("user://", "");
	}

	return p_path;
}

bool ProjectSettings::_set(const StringName &p_name, const Variant &p_value) {

	_THREAD_SAFE_METHOD_

	if (p_value.get_type() == Variant::NIL)
		props.erase(p_name);
	else {

		if (p_name == CoreStringNames::get_singleton()->_custom_features) {
			Vector<String> custom_feature_array = p_value;
			for (int i = 0; i < custom_feature_array.size(); i++) {

				custom_features.insert(custom_feature_array[i]);
			}
			return true;
		}

		if (!disable_feature_overrides) {
			int dot = p_name.operator String().find(".");
			if (dot != -1) {
				Vector<String> s = p_name.operator String().split(".");

				bool override_valid = false;
				for (int i = 1; i < s.size(); i++) {
					String feature = s[i].strip_edges();
					if (OS::get_singleton()->check_feature_support(feature) || custom_features.has(feature)) {
						override_valid = true;
						break;
					}
				}

				if (override_valid) {

					feature_overrides[s[0]] = p_name;
				}
			}
		}

		if (props.has(p_name)) {
			if (!props[p_name].overrided)
				props[p_name].variant = p_value;

		} else {
			props[p_name] = VariantContainer(p_value, last_order++);
		}
	}

	return true;
}
bool ProjectSettings::_get(const StringName &p_name, Variant &r_ret) const {

	_THREAD_SAFE_METHOD_

	StringName name = p_name;
	if (!disable_feature_overrides && feature_overrides.has(name)) {
		name = feature_overrides[name];
	}
	if (!props.has(name)) {
		print_line("WARNING: not found: " + String(name));
		return false;
	}
	r_ret = props[name].variant;
	return true;
}

struct _VCSort {

	String name;
	Variant::Type type;
	int order;
	int flags;

	bool operator<(const _VCSort &p_vcs) const { return order == p_vcs.order ? name < p_vcs.name : order < p_vcs.order; }
};

void ProjectSettings::_get_property_list(List<PropertyInfo> *p_list) const {

	_THREAD_SAFE_METHOD_

	Set<_VCSort> vclist;

	for (Map<StringName, VariantContainer>::Element *E = props.front(); E; E = E->next()) {

		const VariantContainer *v = &E->get();

		if (v->hide_from_editor)
			continue;

		_VCSort vc;
		vc.name = E->key();
		vc.order = v->order;
		vc.type = v->variant.get_type();
		if (vc.name.begins_with("input/") || vc.name.begins_with("import/") || vc.name.begins_with("export/") || vc.name.begins_with("/remap") || vc.name.begins_with("/locale") || vc.name.begins_with("/autoload"))
			vc.flags = PROPERTY_USAGE_STORAGE;
		else
			vc.flags = PROPERTY_USAGE_EDITOR | PROPERTY_USAGE_STORAGE;

		vclist.insert(vc);
	}

	for (Set<_VCSort>::Element *E = vclist.front(); E; E = E->next()) {

		String prop_info_name = E->get().name;
		int dot = prop_info_name.find(".");
		if (dot != -1)
			prop_info_name = prop_info_name.substr(0, dot);

		if (custom_prop_info.has(prop_info_name)) {
			PropertyInfo pi = custom_prop_info[prop_info_name];
			pi.name = E->get().name;
			pi.usage = E->get().flags;
			p_list->push_back(pi);
		} else
			p_list->push_back(PropertyInfo(E->get().type, E->get().name, PROPERTY_HINT_NONE, "", E->get().flags));
	}
}

bool ProjectSettings::_load_resource_pack(const String &p_pack) {

	if (PackedData::get_singleton()->is_disabled())
		return false;

	bool ok = PackedData::get_singleton()->add_pack(p_pack) == OK;

	if (!ok)
		return false;

	//if data.pck is found, all directory access will be from here
	DirAccess::make_default<DirAccessPack>(DirAccess::ACCESS_RESOURCES);
	using_datapack = true;

	return true;
}

Error ProjectSettings::setup(const String &p_path, const String &p_main_pack) {

	//If looking for files in network, just use network!

	if (FileAccessNetworkClient::get_singleton()) {

		if (_load_settings("res://project.godot") == OK || _load_settings_binary("res://project.binary") == OK) {

			_load_settings("res://override.cfg");
#ifdef DEBUG_ENABLED
		} else {
			// when debug version of godot is used, provide some feedback to the developer
			print_line("Couldn't open project over network");
#endif
		}

		return OK;
	}

	String exec_path = OS::get_singleton()->get_executable_path();

	//Attempt with a passed main pack first

	if (p_main_pack != "") {

		bool ok = _load_resource_pack(p_main_pack);
		ERR_FAIL_COND_V(!ok, ERR_CANT_OPEN);

		if (_load_settings("res://project.godot") == OK || _load_settings_binary("res://project.binary") == OK) {
			//load override from location of the main pack
			_load_settings(p_main_pack.get_base_dir().plus_file("override.cfg"));
#ifdef DEBUG_ENABLED
			// when debug version of godot is used, provide some feedback to the developer
			print_line("Successfully loaded " + p_main_pack + "/project.godot or project.binary");
		} else {
			print_line("Couldn't load/find " + p_main_pack + "/project.godot or project.binary");
#endif
		}

		return OK;
	}

	//Attempt with execname.pck
	if (exec_path != "") {
		bool found = false;

		// get our filename without our path (note, not using exec_path.get_basename anymore because not all file systems have dots in their file names!)
		String filebase_name = exec_path.get_file();

		// try to open at the location of executable
		String datapack_name = exec_path.get_base_dir().plus_file(filebase_name) + ".pck";
		if (_load_resource_pack(datapack_name)) {
			found = true;
		} else {
#ifdef DEBUG_ENABLED
			// when debug version of godot is used, provide some feedback to the developer
			print_line("Couldn't open " + datapack_name);
#endif
			datapack_name = filebase_name + ".pck";
			if (_load_resource_pack(datapack_name)) {
				found = true;
#ifdef DEBUG_ENABLED
			} else {
				// when debug version of godot is used, provide some feedback to the developer
				print_line("Couldn't open " + datapack_name);
#endif
			}
		}

		// if we opened our package, try and load our project...
		if (found) {
			if (_load_settings("res://project.godot") == OK || _load_settings_binary("res://project.binary") == OK) {
				// load override from location of executable
				_load_settings(exec_path.get_base_dir().plus_file("override.cfg"));

#ifdef DEBUG_ENABLED
				// when debug version of godot is used, provide some feedback to the developer
				print_line("Successfully loaded " + datapack_name + "/project.godot or project.binary");
			} else {
				print_line("Couldn't load/find " + datapack_name + "/project.godot or project.binary");
#endif
			}

			return OK;
		}
	}

	//Try to use the filesystem for files, according to OS. (only Android -when reading from pck- and iOS use this)
	if (OS::get_singleton()->get_resource_dir() != "") {
		//OS will call Globals->get_resource_path which will be empty if not overridden!
		//if the OS would rather use somewhere else, then it will not be empty.

		resource_path = OS::get_singleton()->get_resource_dir().replace("\\", "/");
		if (resource_path.length() && resource_path[resource_path.length() - 1] == '/')
			resource_path = resource_path.substr(0, resource_path.length() - 1); // chop end

		// data.pck and data.zip are deprecated and no longer supported, apologies.
		// make sure this is loaded from the resource path

		if (_load_settings("res://project.godot") == OK || _load_settings_binary("res://project.binary") == OK) {
			_load_settings("res://override.cfg");
#ifdef DEBUG_ENABLED
			// when debug version of godot is used, provide some feedback to the developer
			print_line("Successfully loaded " + resource_path + "/project.godot or project.binary");
		} else {
			print_line("Couldn't load/find " + resource_path + "/project.godot or project.binary");
#endif
		}

		return OK;
	}

	//Nothing was found, try to find a project.godot somewhere!

	DirAccess *d = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
	ERR_FAIL_COND_V(!d, ERR_CANT_CREATE);

	d->change_dir(p_path);

	String candidate = d->get_current_dir();
	String current_dir = d->get_current_dir();
	bool found = false;

	while (true) {
		//try to load settings in ascending through dirs shape!

		if (_load_settings(current_dir + "/project.godot") == OK || _load_settings_binary(current_dir + "/project.binary") == OK) {

			_load_settings(current_dir + "/override.cfg");
			candidate = current_dir;
			found = true;
			break;
#ifdef DEBUG_ENABLED
			// when debug version of godot is used, provide some feedback to the developer
			print_line("Successfully loaded " + current_dir + "/project.godot or project.binary");
		} else {
			print_line("Couldn't load/find " + current_dir + "/project.godot or project.binary");
#endif
		}

		d->change_dir("..");
		if (d->get_current_dir() == current_dir)
			break; //not doing anything useful
		current_dir = d->get_current_dir();
	}

	resource_path = candidate;
	resource_path = resource_path.replace("\\", "/"); // windows path to unix path just in case
	memdelete(d);

	if (!found)
		return ERR_FILE_NOT_FOUND;

	if (resource_path.length() && resource_path[resource_path.length() - 1] == '/')
		resource_path = resource_path.substr(0, resource_path.length() - 1); // chop end

	return OK;
}

bool ProjectSettings::has(String p_var) const {

	_THREAD_SAFE_METHOD_

	return props.has(p_var);
}

void ProjectSettings::set_registering_order(bool p_enable) {

	registering_order = p_enable;
}

Error ProjectSettings::_load_settings_binary(const String p_path) {

	Error err;
	FileAccess *f = FileAccess::open(p_path, FileAccess::READ, &err);
	if (err != OK) {
		return err;
	}

	uint8_t hdr[4];
	f->get_buffer(hdr, 4);
	if (hdr[0] != 'E' || hdr[1] != 'C' || hdr[2] != 'F' || hdr[3] != 'G') {

		memdelete(f);
		ERR_EXPLAIN("Corrupted header in binary project.binary (not ECFG)");
		ERR_FAIL_V(ERR_FILE_CORRUPT;)
	}

	uint32_t count = f->get_32();

	for (uint32_t i = 0; i < count; i++) {

		uint32_t slen = f->get_32();
		CharString cs;
		cs.resize(slen + 1);
		cs[slen] = 0;
		f->get_buffer((uint8_t *)cs.ptr(), slen);
		String key;
		key.parse_utf8(cs.ptr());

		uint32_t vlen = f->get_32();
		Vector<uint8_t> d;
		d.resize(vlen);
		f->get_buffer(d.ptr(), vlen);
		Variant value;
		Error err = decode_variant(value, d.ptr(), d.size());
		ERR_EXPLAIN("Error decoding property: " + key);
		ERR_CONTINUE(err != OK);
		set(key, value);
	}

	return OK;
}
Error ProjectSettings::_load_settings(const String p_path) {

	Error err;
	FileAccess *f = FileAccess::open(p_path, FileAccess::READ, &err);

	if (!f)
		return ERR_CANT_OPEN;

	VariantParser::StreamFile stream;
	stream.f = f;

	String assign;
	Variant value;
	VariantParser::Tag next_tag;

	int lines = 0;
	String error_text;

	String section;

	while (true) {

		assign = Variant();
		next_tag.fields.clear();
		next_tag.name = String();

		err = VariantParser::parse_tag_assign_eof(&stream, lines, error_text, next_tag, assign, value, NULL, true);
		if (err == ERR_FILE_EOF) {
			memdelete(f);
			return OK;
		} else if (err != OK) {
			ERR_PRINTS("ProjectSettings::load - " + p_path + ":" + itos(lines) + " error: " + error_text);
			memdelete(f);
			return err;
		}

		if (assign != String()) {
			if (section == String() && assign == "config_version") {
				int config_version = value;
				if (config_version > FORMAT_VERSION) {
					memdelete(f);
					ERR_FAIL_COND_V(config_version > FORMAT_VERSION, ERR_FILE_CANT_OPEN);
				}
			} else {
				// config_version is checked and dropped
				set(section + "/" + assign, value);
			}
		} else if (next_tag.name != String()) {
			section = next_tag.name;
		}
	}

	memdelete(f);

	return OK;
}

int ProjectSettings::get_order(const String &p_name) const {

	ERR_FAIL_COND_V(!props.has(p_name), -1);
	return props[p_name].order;
}

void ProjectSettings::set_order(const String &p_name, int p_order) {

	ERR_FAIL_COND(!props.has(p_name));
	props[p_name].order = p_order;
}

void ProjectSettings::set_builtin_order(const String &p_name) {

	ERR_FAIL_COND(!props.has(p_name));
	if (props[p_name].order >= NO_BUILTIN_ORDER_BASE) {
		props[p_name].order = last_builtin_order++;
	}
}

void ProjectSettings::clear(const String &p_name) {

	ERR_FAIL_COND(!props.has(p_name));
	props.erase(p_name);
}

Error ProjectSettings::save() {

	return save_custom(get_resource_path() + "/project.godot");
}

Error ProjectSettings::_save_settings_binary(const String &p_file, const Map<String, List<String> > &props, const CustomMap &p_custom, const String &p_custom_features) {

	Error err;
	FileAccess *file = FileAccess::open(p_file, FileAccess::WRITE, &err);
	if (err != OK) {

		ERR_EXPLAIN("Couldn't save project.binary at " + p_file);
		ERR_FAIL_COND_V(err, err)
	}

	uint8_t hdr[4] = { 'E', 'C', 'F', 'G' };
	file->store_buffer(hdr, 4);

	int count = 0;

	for (Map<String, List<String> >::Element *E = props.front(); E; E = E->next()) {

		for (List<String>::Element *F = E->get().front(); F; F = F->next()) {

			count++;
		}
	}

	if (p_custom_features != String()) {
		file->store_32(count + 1);
		//store how many properties are saved, add one for custom featuers, which must always go first
		String key = CoreStringNames::get_singleton()->_custom_features;
		file->store_32(key.length());
		file->store_string(key);

		int len;
		Error err = encode_variant(p_custom_features, NULL, len);
		if (err != OK) {
			memdelete(file);
			ERR_FAIL_V(err);
		}

		Vector<uint8_t> buff;
		buff.resize(len);

		err = encode_variant(p_custom_features, &buff[0], len);
		if (err != OK) {
			memdelete(file);
			ERR_FAIL_V(err);
		}
		file->store_32(len);
		file->store_buffer(buff.ptr(), buff.size());

	} else {
		file->store_32(count); //store how many properties are saved
	}

	for (Map<String, List<String> >::Element *E = props.front(); E; E = E->next()) {

		for (List<String>::Element *F = E->get().front(); F; F = F->next()) {

			String key = F->get();
			if (E->key() != "")
				key = E->key() + "/" + key;
			Variant value;
			if (p_custom.has(key))
				value = p_custom[key];
			else
				value = get(key);

			file->store_32(key.length());
			file->store_string(key);

			int len;
			Error err = encode_variant(value, NULL, len);
			if (err != OK)
				memdelete(file);
			ERR_FAIL_COND_V(err != OK, ERR_INVALID_DATA);

			Vector<uint8_t> buff;
			buff.resize(len);

			err = encode_variant(value, &buff[0], len);
			if (err != OK)
				memdelete(file);
			ERR_FAIL_COND_V(err != OK, ERR_INVALID_DATA);
			file->store_32(len);
			file->store_buffer(buff.ptr(), buff.size());
		}
	}

	file->close();
	memdelete(file);

	return OK;
}

Error ProjectSettings::_save_settings_text(const String &p_file, const Map<String, List<String> > &props, const CustomMap &p_custom, const String &p_custom_features) {

	Error err;
	FileAccess *file = FileAccess::open(p_file, FileAccess::WRITE, &err);

	if (err) {
		ERR_EXPLAIN("Couldn't save project.godot - " + p_file);
		ERR_FAIL_COND_V(err, err)
	}

	file->store_line("; Engine configuration file.");
	file->store_line("; It's best edited using the editor UI and not directly,");
	file->store_line("; since the parameters that go here are not all obvious.");
	file->store_line("; ");
	file->store_line("; Format: ");
	file->store_line(";   [section] ; section goes between []");
	file->store_line(";   param=value ; assign values to parameters");
	file->store_line("");

	file->store_string("config_version=" + itos(FORMAT_VERSION) + "\n");
	if (p_custom_features != String())
		file->store_string("custom_features=\"" + p_custom_features + "\"\n");
	file->store_string("\n");

	for (Map<String, List<String> >::Element *E = props.front(); E; E = E->next()) {

		if (E != props.front())
			file->store_string("\n");

		if (E->key() != "")
			file->store_string("[" + E->key() + "]\n\n");
		for (List<String>::Element *F = E->get().front(); F; F = F->next()) {

			String key = F->get();
			if (E->key() != "")
				key = E->key() + "/" + key;
			Variant value;
			if (p_custom.has(key))
				value = p_custom[key];
			else
				value = get(key);

			String vstr;
			VariantWriter::write_to_string(value, vstr);
			file->store_string(F->get() + "=" + vstr + "\n");
		}
	}

	file->close();
	memdelete(file);

	return OK;
}

Error ProjectSettings::_save_custom_bnd(const String &p_file) { // add other params as dictionary and array?

	return save_custom(p_file);
};

Error ProjectSettings::save_custom(const String &p_path, const CustomMap &p_custom, const Vector<String> &p_custom_features, bool p_merge_with_current) {

	ERR_FAIL_COND_V(p_path == "", ERR_INVALID_PARAMETER);

	Set<_VCSort> vclist;

	if (p_merge_with_current) {
		for (Map<StringName, VariantContainer>::Element *G = props.front(); G; G = G->next()) {

			const VariantContainer *v = &G->get();

			if (v->hide_from_editor)
				continue;

			if (p_custom.has(G->key()))
				continue;

			_VCSort vc;
			vc.name = G->key(); //*k;
			vc.order = v->order;
			vc.type = v->variant.get_type();
			vc.flags = PROPERTY_USAGE_EDITOR | PROPERTY_USAGE_STORAGE;
			if (v->variant == v->initial)
				continue;

			vclist.insert(vc);
		}
	}

	for (const Map<String, Variant>::Element *E = p_custom.front(); E; E = E->next()) {

		// Lookup global prop to store in the same order
		Map<StringName, VariantContainer>::Element *global_prop = props.find(E->key());

		_VCSort vc;
		vc.name = E->key();
		vc.order = global_prop ? global_prop->get().order : 0xFFFFFFF;
		vc.type = E->get().get_type();
		vc.flags = PROPERTY_USAGE_STORAGE;
		vclist.insert(vc);
	}

	Map<String, List<String> > props;

	for (Set<_VCSort>::Element *E = vclist.front(); E; E = E->next()) {

		String category = E->get().name;
		String name = E->get().name;

		int div = category.find("/");

		if (div < 0)
			category = "";
		else {

			category = category.substr(0, div);
			name = name.substr(div + 1, name.size());
		}
		props[category].push_back(name);
	}

	String custom_features;

	for (int i = 0; i < p_custom_features.size(); i++) {
		if (i > 0)
			custom_features += ",";

		String f = p_custom_features[i].strip_edges().replace("\"", "");
		custom_features += f;
	}

	if (p_path.ends_with(".godot"))
		return _save_settings_text(p_path, props, p_custom, custom_features);
	else if (p_path.ends_with(".binary"))
		return _save_settings_binary(p_path, props, p_custom, custom_features);
	else {

		ERR_EXPLAIN("Unknown config file format: " + p_path);
		ERR_FAIL_V(ERR_FILE_UNRECOGNIZED);
	}

	return OK;
}

Variant _GLOBAL_DEF(const String &p_var, const Variant &p_default) {

	Variant ret;
	if (ProjectSettings::get_singleton()->has(p_var)) {
		ret = ProjectSettings::get_singleton()->get(p_var);
	} else {
		ProjectSettings::get_singleton()->set(p_var, p_default);
		ret = p_default;
	}
	ProjectSettings::get_singleton()->set_initial_value(p_var, p_default);
	ProjectSettings::get_singleton()->set_builtin_order(p_var);
	return ret;
}

void ProjectSettings::add_singleton(const Singleton &p_singleton) {

	singletons.push_back(p_singleton);
	singleton_ptrs[p_singleton.name] = p_singleton.ptr;
}

Object *ProjectSettings::get_singleton_object(const String &p_name) const {

	const Map<StringName, Object *>::Element *E = singleton_ptrs.find(p_name);
	if (!E)
		return NULL;
	else
		return E->get();
};

bool ProjectSettings::has_singleton(const String &p_name) const {

	return get_singleton_object(p_name) != NULL;
};

void ProjectSettings::get_singletons(List<Singleton> *p_singletons) {

	for (List<Singleton>::Element *E = singletons.front(); E; E = E->next())
		p_singletons->push_back(E->get());
}

Vector<String> ProjectSettings::get_optimizer_presets() const {

	List<PropertyInfo> pi;
	ProjectSettings::get_singleton()->get_property_list(&pi);
	Vector<String> names;

	for (List<PropertyInfo>::Element *E = pi.front(); E; E = E->next()) {

		if (!E->get().name.begins_with("optimizer_presets/"))
			continue;
		names.push_back(E->get().name.get_slicec('/', 1));
	}

	names.sort();

	return names;
}

void ProjectSettings::_add_property_info_bind(const Dictionary &p_info) {

	ERR_FAIL_COND(!p_info.has("name"));
	ERR_FAIL_COND(!p_info.has("type"));

	PropertyInfo pinfo;
	pinfo.name = p_info["name"];
	ERR_FAIL_COND(!props.has(pinfo.name));
	pinfo.type = Variant::Type(p_info["type"].operator int());
	ERR_FAIL_INDEX(pinfo.type, Variant::VARIANT_MAX);

	if (p_info.has("hint"))
		pinfo.hint = PropertyHint(p_info["hint"].operator int());
	if (p_info.has("hint_string"))
		pinfo.hint_string = p_info["hint_string"];

	set_custom_property_info(pinfo.name, pinfo);
}

void ProjectSettings::set_custom_property_info(const String &p_prop, const PropertyInfo &p_info) {

	ERR_FAIL_COND(!props.has(p_prop));
	custom_prop_info[p_prop] = p_info;
	custom_prop_info[p_prop].name = p_prop;
}

void ProjectSettings::set_disable_feature_overrides(bool p_disable) {

	disable_feature_overrides = p_disable;
}

bool ProjectSettings::is_using_datapack() const {

	return using_datapack;
}

bool ProjectSettings::property_can_revert(const String &p_name) {

	if (!props.has(p_name))
		return false;

	return props[p_name].initial != props[p_name].variant;
}

Variant ProjectSettings::property_get_revert(const String &p_name) {

	if (!props.has(p_name))
		return Variant();

	return props[p_name].initial;
}

void ProjectSettings::_bind_methods() {

	ClassDB::bind_method(D_METHOD("has", "name"), &ProjectSettings::has);
	ClassDB::bind_method(D_METHOD("set_order", "name", "pos"), &ProjectSettings::set_order);
	ClassDB::bind_method(D_METHOD("get_order", "name"), &ProjectSettings::get_order);
	ClassDB::bind_method(D_METHOD("set_initial_value", "name", "value"), &ProjectSettings::set_initial_value);
	ClassDB::bind_method(D_METHOD("add_property_info", "hint"), &ProjectSettings::_add_property_info_bind);
	ClassDB::bind_method(D_METHOD("clear", "name"), &ProjectSettings::clear);
	ClassDB::bind_method(D_METHOD("localize_path", "path"), &ProjectSettings::localize_path);
	ClassDB::bind_method(D_METHOD("globalize_path", "path"), &ProjectSettings::globalize_path);
	ClassDB::bind_method(D_METHOD("save"), &ProjectSettings::save);
	ClassDB::bind_method(D_METHOD("has_singleton", "name"), &ProjectSettings::has_singleton);
	ClassDB::bind_method(D_METHOD("get_singleton", "name"), &ProjectSettings::get_singleton_object);
	ClassDB::bind_method(D_METHOD("load_resource_pack", "pack"), &ProjectSettings::_load_resource_pack);
	ClassDB::bind_method(D_METHOD("property_can_revert", "name"), &ProjectSettings::property_can_revert);
	ClassDB::bind_method(D_METHOD("property_get_revert", "name"), &ProjectSettings::property_get_revert);

	ClassDB::bind_method(D_METHOD("save_custom", "file"), &ProjectSettings::_save_custom_bnd);
}

ProjectSettings::ProjectSettings() {

	singleton = this;
	last_order = NO_BUILTIN_ORDER_BASE;
	last_builtin_order = 0;
	disable_feature_overrides = false;
	registering_order = true;

	Array va;
	Ref<InputEventKey> key;
	Ref<InputEventJoypadButton> joyb;

	GLOBAL_DEF("application/config/name", "");
	GLOBAL_DEF("application/run/main_scene", "");
	custom_prop_info["application/run/main_scene"] = PropertyInfo(Variant::STRING, "application/run/main_scene", PROPERTY_HINT_FILE, "tscn,scn,res");
	GLOBAL_DEF("application/run/disable_stdout", false);
	GLOBAL_DEF("application/run/disable_stderr", false);
	GLOBAL_DEF("application/config/use_shared_user_dir", true);

	key.instance();
	key->set_scancode(KEY_ENTER);
	va.push_back(key);
	key.instance();
	key->set_scancode(KEY_KP_ENTER);
	va.push_back(key);
	key.instance();
	key->set_scancode(KEY_SPACE);
	va.push_back(key);
	joyb.instance();
	joyb->set_button_index(JOY_BUTTON_0);
	va.push_back(joyb);
	GLOBAL_DEF("input/ui_accept", va);
	input_presets.push_back("input/ui_accept");

	va = Array();
	key.instance();
	key->set_scancode(KEY_SPACE);
	va.push_back(key);
	joyb.instance();
	joyb->set_button_index(JOY_BUTTON_3);
	va.push_back(joyb);
	GLOBAL_DEF("input/ui_select", va);
	input_presets.push_back("input/ui_select");

	va = Array();
	key.instance();
	key->set_scancode(KEY_ESCAPE);
	va.push_back(key);
	joyb.instance();
	joyb->set_button_index(JOY_BUTTON_1);
	va.push_back(joyb);
	GLOBAL_DEF("input/ui_cancel", va);
	input_presets.push_back("input/ui_cancel");

	va = Array();
	key.instance();
	key->set_scancode(KEY_TAB);
	va.push_back(key);
	GLOBAL_DEF("input/ui_focus_next", va);
	input_presets.push_back("input/ui_focus_next");

	va = Array();
	key.instance();
	key->set_scancode(KEY_TAB);
	key->set_shift(true);
	va.push_back(key);
	GLOBAL_DEF("input/ui_focus_prev", va);
	input_presets.push_back("input/ui_focus_prev");

	va = Array();
	key.instance();
	key->set_scancode(KEY_LEFT);
	va.push_back(key);
	joyb.instance();
	joyb->set_button_index(JOY_DPAD_LEFT);
	va.push_back(joyb);
	GLOBAL_DEF("input/ui_left", va);
	input_presets.push_back("input/ui_left");

	va = Array();
	key.instance();
	key->set_scancode(KEY_RIGHT);
	va.push_back(key);
	joyb.instance();
	joyb->set_button_index(JOY_DPAD_RIGHT);
	va.push_back(joyb);
	GLOBAL_DEF("input/ui_right", va);
	input_presets.push_back("input/ui_right");

	va = Array();
	key.instance();
	key->set_scancode(KEY_UP);
	va.push_back(key);
	joyb.instance();
	joyb->set_button_index(JOY_DPAD_UP);
	va.push_back(joyb);
	GLOBAL_DEF("input/ui_up", va);
	input_presets.push_back("input/ui_up");

	va = Array();
	key.instance();
	key->set_scancode(KEY_DOWN);
	va.push_back(key);
	joyb.instance();
	joyb->set_button_index(JOY_DPAD_DOWN);
	va.push_back(joyb);
	GLOBAL_DEF("input/ui_down", va);
	input_presets.push_back("input/ui_down");

	va = Array();
	key.instance();
	key->set_scancode(KEY_PAGEUP);
	va.push_back(key);
	GLOBAL_DEF("input/ui_page_up", va);
	input_presets.push_back("input/ui_page_up");

	va = Array();
	key.instance();
	key->set_scancode(KEY_PAGEDOWN);
	va.push_back(key);
	GLOBAL_DEF("input/ui_page_down", va);
	input_presets.push_back("input/ui_page_down");

	//GLOBAL_DEF("display/window/handheld/orientation", "landscape");

	custom_prop_info["display/window/handheld/orientation"] = PropertyInfo(Variant::STRING, "display/window/handheld/orientation", PROPERTY_HINT_ENUM, "landscape,portrait,reverse_landscape,reverse_portrait,sensor_landscape,sensor_portrait,sensor");
	custom_prop_info["rendering/threads/thread_model"] = PropertyInfo(Variant::INT, "rendering/threads/thread_model", PROPERTY_HINT_ENUM, "Single-Unsafe,Single-Safe,Multi-Threaded");
	custom_prop_info["physics/2d/thread_model"] = PropertyInfo(Variant::INT, "physics/2d/thread_model", PROPERTY_HINT_ENUM, "Single-Unsafe,Single-Safe,Multi-Threaded");
	custom_prop_info["rendering/quality/intended_usage/framebuffer_allocation"] = PropertyInfo(Variant::INT, "rendering/quality/intended_usage/framebuffer_allocation", PROPERTY_HINT_ENUM, "2D,2D Without Sampling,3D,3D Without Effects");
	GLOBAL_DEF("rendering/quality/intended_usage/framebuffer_mode", 2);

	GLOBAL_DEF("debug/settings/profiler/max_functions", 16384);

	//assigning here, because using GLOBAL_GET on every block for compressing can be slow
	Compression::zstd_level = GLOBAL_DEF("compression/formats/zstd/compression_level", 3);
	custom_prop_info["compression/formats/zstd/compression_level"] = PropertyInfo(Variant::INT, "compression/formats/zstd/compression_level", PROPERTY_HINT_RANGE, "1,22,1");
	Compression::zlib_level = GLOBAL_DEF("compression/formats/zlib/compression_level", Z_DEFAULT_COMPRESSION);
	custom_prop_info["compression/formats/zlib/compression_level"] = PropertyInfo(Variant::INT, "compression/formats/zlib/compression_level", PROPERTY_HINT_RANGE, "-1,9,1");
	Compression::gzip_level = GLOBAL_DEF("compression/formats/gzip/compression_level", Z_DEFAULT_COMPRESSION);
	custom_prop_info["compression/formats/gzip/compression_level"] = PropertyInfo(Variant::INT, "compression/formats/gzip/compression_level", PROPERTY_HINT_RANGE, "-1,9,1");

	using_datapack = false;
}

ProjectSettings::~ProjectSettings() {

	singleton = NULL;
}