/*************************************************************************/
/*  project_manager.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_manager.h"
#include "editor_settings.h"
#include "io/config_file.h"
#include "os/dir_access.h"
#include "os/file_access.h"
#include "os/keyboard.h"
#include "os/os.h"
#include "scene/gui/separator.h"
#include "scene/gui/tool_button.h"
#include "version.h"

#include "io/stream_peer_ssl.h"
#include "scene/gui/center_container.h"
#include "scene/gui/line_edit.h"
#include "scene/gui/panel_container.h"

#include "io/resource_saver.h"
#include "scene/gui/margin_container.h"
#include "scene/gui/texture_frame.h"

#include "editor_initialize_ssl.h"
#include "editor_scale.h"
#include "editor_themes.h"

#include "io/zip_io.h"

class NewProjectDialog : public ConfirmationDialog {

	OBJ_TYPE(NewProjectDialog, ConfirmationDialog);

public:
	enum Mode {
		MODE_NEW,
		MODE_IMPORT,
		MODE_INSTALL
	};

private:
	Mode mode;
	Label *pp, *pn;
	Label *error;
	LineEdit *project_path;
	LineEdit *project_name;
	FileDialog *fdialog;
	String zip_path;
	String zip_title;
	AcceptDialog *dialog_error;

	String _test_path() {

		error->set_text("");
		get_ok()->set_disabled(true);
		DirAccess *d = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
		String valid_path;
		if (d->change_dir(project_path->get_text()) == OK) {
			valid_path = project_path->get_text();
		} else if (d->change_dir(project_path->get_text().strip_edges()) == OK) {
			valid_path = project_path->get_text().strip_edges();
		}

		if (valid_path == "") {
			error->set_text(TTR("Invalid project path, the path must exist!"));
			memdelete(d);
			return "";
		}

		if (mode != MODE_IMPORT) {

			if (d->file_exists("engine.cfg")) {

				error->set_text(TTR("Invalid project path, engine.cfg must not exist."));
				memdelete(d);
				return "";
			}

		} else {

			if (valid_path != "" && !d->file_exists("engine.cfg")) {

				error->set_text(TTR("Invalid project path, engine.cfg must exist."));
				memdelete(d);
				return "";
			}
		}

		memdelete(d);
		get_ok()->set_disabled(false);
		return valid_path;
	}

	void _path_text_changed(const String &p_path) {

		String sp = _test_path();
		if (sp != "") {

			sp = sp.replace("\\", "/");
			int lidx = sp.find_last("/");

			if (lidx != -1) {
				sp = sp.substr(lidx + 1, sp.length());
			}
			if (sp == "" && mode == MODE_IMPORT)
				sp = TTR("Imported Project");

			project_name->set_text(sp);
		}
	}

	void _file_selected(const String &p_path) {

		String p = p_path;
		if (mode == MODE_IMPORT) {
			if (p.ends_with("engine.cfg")) {

				p = p.get_base_dir();
			}
		}
		String sp = p.simplify_path();
		project_path->set_text(sp);
		_path_text_changed(sp);
		get_ok()->call_deferred("grab_focus");
	}

	void _path_selected(const String &p_path) {

		String p = p_path;
		String sp = p.simplify_path();
		project_path->set_text(sp);
		_path_text_changed(sp);
		get_ok()->call_deferred("grab_focus");
	}

	void _browse_path() {

		if (mode == MODE_IMPORT) {

			fdialog->set_mode(FileDialog::MODE_OPEN_FILE);
			fdialog->clear_filters();
			fdialog->add_filter("engine.cfg ; " _MKSTR(VERSION_NAME) " Project");
		} else {
			fdialog->set_mode(FileDialog::MODE_OPEN_DIR);
		}
		fdialog->popup_centered_ratio();
	}

	void _text_changed(const String &p_text) {
		_test_path();
	}

	void ok_pressed() {

		String dir = _test_path();
		if (dir == "") {
			error->set_text(TTR("Invalid project path (changed anything?)."));
			return;
		}

		if (mode == MODE_IMPORT) {
			// nothing to do
		} else {
			if (mode == MODE_NEW) {

				FileAccess *f = FileAccess::open(dir.plus_file("/engine.cfg"), FileAccess::WRITE);
				if (!f) {
					error->set_text(TTR("Couldn't create engine.cfg in project path."));
				} else {

					f->store_line("; Engine configuration file.");
					f->store_line("; It's best edited using the editor UI and not directly,");
					f->store_line("; since the parameters that go here are not all obvious.");
					f->store_line("; ");
					f->store_line("; Format: ");
					f->store_line(";   [section] ; section goes between []");
					f->store_line(";   param=value ; assign values to parameters");
					f->store_line("\n");
					f->store_line("[application]");
					f->store_line("\n");
					f->store_line("name=\"" + project_name->get_text() + "\"");
					f->store_line("icon=\"res://icon.png\"");
					f->store_line("\n");
					f->store_line("[physics_2d]");
					f->store_line("\n");
					f->store_line("motion_fix_enabled=true");

					memdelete(f);

					ResourceSaver::save(dir.plus_file("/icon.png"), get_icon("DefaultProjectIcon", "EditorIcons"));
				}

			} else if (mode == MODE_INSTALL) {

				FileAccess *src_f = NULL;
				zlib_filefunc_def io = zipio_create_io_from_file(&src_f);

				unzFile pkg = unzOpen2(zip_path.utf8().get_data(), &io);
				if (!pkg) {

					dialog_error->set_text("Error opening package file, not in zip format.");
					return;
				}

				int ret = unzGoToFirstFile(pkg);

				Vector<String> failed_files;

				int idx = 0;
				while (ret == UNZ_OK) {

					//get filename
					unz_file_info info;
					char fname[16384];
					ret = unzGetCurrentFileInfo(pkg, &info, fname, 16384, NULL, 0, NULL, 0);

					String path = fname;

					int depth = 1; //stuff from github comes with tag
					bool skip = false;
					while (depth > 0) {
						int pp = path.find("/");
						if (pp == -1) {
							skip = true;
							break;
						}
						path = path.substr(pp + 1, path.length());
						depth--;
					}

					if (skip || path == String()) {
						//
					} else if (path.ends_with("/")) { // a dir

						path = path.substr(0, path.length() - 1);

						DirAccess *da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
						da->make_dir(dir.plus_file(path));
						memdelete(da);

					} else {

						Vector<uint8_t> data;
						data.resize(info.uncompressed_size);

						//read
						unzOpenCurrentFile(pkg);
						unzReadCurrentFile(pkg, data.ptr(), data.size());
						unzCloseCurrentFile(pkg);

						FileAccess *f = FileAccess::open(dir.plus_file(path), FileAccess::WRITE);

						if (f) {
							f->store_buffer(data.ptr(), data.size());
							memdelete(f);
						} else {
							failed_files.push_back(path);
						}
					}

					idx++;
					ret = unzGoToNextFile(pkg);
				}

				unzClose(pkg);

				if (failed_files.size()) {
					String msg = TTR("The following files failed extraction from package:") + "\n\n";
					for (int i = 0; i < failed_files.size(); i++) {

						if (i > 15) {
							msg += "\nAnd " + itos(failed_files.size() - i) + " more files.";
							break;
						}
						msg += failed_files[i] + "\n";
					}

					dialog_error->set_text(msg);
					dialog_error->popup_centered_minsize();

				} else {
					dialog_error->set_text(TTR("Package Installed Successfully!"));
					dialog_error->popup_centered_minsize();
				}
			}
		}

		dir = dir.replace("\\", "/");
		if (dir.ends_with("/"))
			dir = dir.substr(0, dir.length() - 1);
		String proj = dir.replace("/", "::");
		EditorSettings::get_singleton()->set("projects/" + proj, dir);
		EditorSettings::get_singleton()->save();

		hide();
		emit_signal("project_created", dir);
	}

protected:
	static void _bind_methods() {

		ObjectTypeDB::bind_method("_browse_path", &NewProjectDialog::_browse_path);
		ObjectTypeDB::bind_method("_text_changed", &NewProjectDialog::_text_changed);
		ObjectTypeDB::bind_method("_path_text_changed", &NewProjectDialog::_path_text_changed);
		ObjectTypeDB::bind_method("_path_selected", &NewProjectDialog::_path_selected);
		ObjectTypeDB::bind_method("_file_selected", &NewProjectDialog::_file_selected);
		ADD_SIGNAL(MethodInfo("project_created"));
	}

public:
	void set_zip_path(const String &p_path) {
		zip_path = p_path;
	}
	void set_zip_title(const String &p_title) {
		zip_title = p_title;
	}

	void set_mode(Mode p_mode) {

		mode = p_mode;
	}

	void show_dialog() {

		project_path->clear();
		project_name->clear();

		if (mode == MODE_IMPORT) {
			set_title(TTR("Import Existing Project"));
			get_ok()->set_text(TTR("Import"));
			pp->set_text(TTR("Project Path (Must Exist):"));
			pn->set_text(TTR("Project Name:"));
			pn->hide();
			project_name->hide();

			popup_centered(Size2(500, 125) * EDSCALE);

		} else if (mode == MODE_NEW) {

			set_title(TTR("Create New Project"));
			get_ok()->set_text(TTR("Create"));
			pp->set_text(TTR("Project Path:"));
			pn->set_text(TTR("Project Name:"));
			pn->show();
			project_name->show();

			popup_centered(Size2(500, 145) * EDSCALE);
		} else if (mode == MODE_INSTALL) {

			set_title(TTR("Install Project:") + " " + zip_title);
			get_ok()->set_text(TTR("Install"));
			pp->set_text(TTR("Project Path:"));
			pn->hide();
			project_name->hide();

			popup_centered(Size2(500, 125) * EDSCALE);
		}
		project_path->grab_focus();

		_test_path();
	}

	NewProjectDialog() {

		VBoxContainer *vb = memnew(VBoxContainer);
		add_child(vb);
		set_child_rect(vb);

		Label *l = memnew(Label);
		l->set_text(TTR("Project Path:"));
		vb->add_child(l);
		pp = l;

		project_path = memnew(LineEdit);
		MarginContainer *mc = memnew(MarginContainer);
		vb->add_child(mc);
		HBoxContainer *pphb = memnew(HBoxContainer);
		mc->add_child(pphb);
		pphb->add_child(project_path);
		project_path->set_h_size_flags(SIZE_EXPAND_FILL);

		Button *browse = memnew(Button);
		pphb->add_child(browse);
		browse->set_text(TTR("Browse"));
		browse->connect("pressed", this, "_browse_path");

		l = memnew(Label);
		l->set_text(TTR("Project Name:"));
		l->set_pos(Point2(5, 50));
		vb->add_child(l);
		pn = l;

		project_name = memnew(LineEdit);
		mc = memnew(MarginContainer);
		vb->add_child(mc);
		mc->add_child(project_name);
		project_name->set_text(TTR("New Game Project"));

		l = memnew(Label);
		l->set_text(TTR("That's a BINGO!"));
		vb->add_child(l);
		error = l;
		l->add_color_override("font_color", Color(1, 0.4, 0.3, 0.8));
		l->set_align(Label::ALIGN_CENTER);

		DirAccess *d = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
		project_path->set_text(d->get_current_dir());
		memdelete(d);

		fdialog = memnew(FileDialog);
		add_child(fdialog);
		fdialog->set_access(FileDialog::ACCESS_FILESYSTEM);
		fdialog->set_current_dir(EditorSettings::get_singleton()->get("global/default_project_path"));
		project_name->connect("text_changed", this, "_text_changed");
		project_path->connect("text_changed", this, "_path_text_changed");
		fdialog->connect("dir_selected", this, "_path_selected");
		fdialog->connect("file_selected", this, "_file_selected");
		set_hide_on_ok(false);
		mode = MODE_NEW;

		dialog_error = memnew(AcceptDialog);
		add_child(dialog_error);
	}
};

struct ProjectItem {
	String project;
	String path;
	String conf;
	uint64_t last_modified;
	bool favorite;
	ProjectItem() {}
	ProjectItem(const String &p_project, const String &p_path, const String &p_conf, uint64_t p_last_modified, bool p_favorite = false) {
		project = p_project;
		path = p_path;
		conf = p_conf;
		last_modified = p_last_modified;
		favorite = p_favorite;
	}
	_FORCE_INLINE_ bool operator<(const ProjectItem &l) const { return last_modified > l.last_modified; }
	_FORCE_INLINE_ bool operator==(const ProjectItem &l) const { return project == l.project; }
};

void ProjectManager::_notification(int p_what) {

	if (p_what == NOTIFICATION_ENTER_TREE) {

		get_tree()->set_editor_hint(true);

	} else if (p_what == NOTIFICATION_VISIBILITY_CHANGED) {

		set_process_unhandled_input(is_visible());
	}
}

void ProjectManager::_panel_draw(Node *p_hb) {

	HBoxContainer *hb = p_hb->cast_to<HBoxContainer>();

	hb->draw_line(Point2(0, hb->get_size().y + 1), Point2(hb->get_size().x - 10, hb->get_size().y + 1), get_color("guide_color", "Tree"));

	if (selected_list.has(hb->get_meta("name"))) {
		hb->draw_style_box(get_stylebox("selected", "Tree"), Rect2(Point2(), hb->get_size() - Size2(10, 0)));
	}
}

void ProjectManager::_update_project_buttons() {
	for (int i = 0; i < scroll_childs->get_child_count(); i++) {

		CanvasItem *item = scroll_childs->get_child(i)->cast_to<CanvasItem>();
		item->update();
	}

	bool has_runnable_scene = false;
	for (Map<String, String>::Element *E = selected_list.front(); E; E = E->next()) {
		const String &selected_main = E->get();
		if (selected_main == "") continue;
		has_runnable_scene = true;
		break;
	}

	erase_btn->set_disabled(selected_list.size() < 1);
	open_btn->set_disabled(selected_list.size() < 1);
	run_btn->set_disabled(!has_runnable_scene);
}

void ProjectManager::_panel_input(const InputEvent &p_ev, Node *p_hb) {

	if (p_ev.type == InputEvent::MOUSE_BUTTON && p_ev.mouse_button.pressed && p_ev.mouse_button.button_index == BUTTON_LEFT) {

		String clicked = p_hb->get_meta("name");
		String clicked_main_scene = p_hb->get_meta("main_scene");

		if (p_ev.key.mod.shift && selected_list.size() > 0 && last_clicked != "" && clicked != last_clicked) {

			int clicked_id = -1;
			int last_clicked_id = -1;
			for (int i = 0; i < scroll_childs->get_child_count(); i++) {
				HBoxContainer *hb = scroll_childs->get_child(i)->cast_to<HBoxContainer>();
				if (!hb) continue;
				if (hb->get_meta("name") == clicked) clicked_id = i;
				if (hb->get_meta("name") == last_clicked) last_clicked_id = i;
			}

			if (last_clicked_id != -1 && clicked_id != -1) {
				int min = clicked_id < last_clicked_id ? clicked_id : last_clicked_id;
				int max = clicked_id > last_clicked_id ? clicked_id : last_clicked_id;
				for (int i = 0; i < scroll_childs->get_child_count(); ++i) {
					HBoxContainer *hb = scroll_childs->get_child(i)->cast_to<HBoxContainer>();
					if (!hb) continue;
					if (i != clicked_id && (i < min || i > max) && !p_ev.key.mod.control) {
						selected_list.erase(hb->get_meta("name"));
					} else if (i >= min && i <= max) {
						selected_list.insert(hb->get_meta("name"), hb->get_meta("main_scene"));
					}
				}
			}

		} else if (selected_list.has(clicked) && p_ev.key.mod.control) {

			selected_list.erase(clicked);

		} else {

			last_clicked = clicked;
			if (p_ev.key.mod.control || selected_list.size() == 0) {
				selected_list.insert(clicked, clicked_main_scene);
			} else {
				selected_list.clear();
				selected_list.insert(clicked, clicked_main_scene);
			}
		}

		_update_project_buttons();

		if (p_ev.mouse_button.doubleclick)
			_open_project(); //open if doubleclicked
	}
}

void ProjectManager::_unhandled_input(const InputEvent &p_ev) {

	if (p_ev.type == InputEvent::KEY) {

		const InputEventKey &k = p_ev.key;

		if (!k.pressed)
			return;

		if (tabs->get_current_tab() != 0)
			return;

		bool scancode_handled = true;

		switch (k.scancode) {

			case KEY_RETURN: {

				_open_project();
			} break;
			case KEY_HOME: {

				for (int i = 0; i < scroll_childs->get_child_count(); i++) {

					HBoxContainer *hb = scroll_childs->get_child(i)->cast_to<HBoxContainer>();
					if (hb) {
						selected_list.clear();
						selected_list.insert(hb->get_meta("name"), hb->get_meta("main_scene"));
						scroll->set_v_scroll(0);
						_update_project_buttons();
						break;
					}
				}

			} break;
			case KEY_END: {

				for (int i = scroll_childs->get_child_count() - 1; i >= 0; i--) {

					HBoxContainer *hb = scroll_childs->get_child(i)->cast_to<HBoxContainer>();
					if (hb) {
						selected_list.clear();
						selected_list.insert(hb->get_meta("name"), hb->get_meta("main_scene"));
						scroll->set_v_scroll(scroll_childs->get_size().y);
						_update_project_buttons();
						break;
					}
				}

			} break;
			case KEY_UP: {

				if (k.mod.shift)
					break;

				if (selected_list.size()) {

					bool found = false;

					for (int i = scroll_childs->get_child_count() - 1; i >= 0; i--) {

						HBoxContainer *hb = scroll_childs->get_child(i)->cast_to<HBoxContainer>();
						if (!hb) continue;

						String current = hb->get_meta("name");

						if (found) {
							selected_list.clear();
							selected_list.insert(current, hb->get_meta("main_scene"));

							int offset_diff = scroll->get_v_scroll() - hb->get_pos().y;

							if (offset_diff > 0)
								scroll->set_v_scroll(scroll->get_v_scroll() - offset_diff);

							_update_project_buttons();

							break;

						} else if (current == selected_list.back()->key()) {

							found = true;
						}
					}

					break;
				}
				// else fallthrough to key_down
			}
			case KEY_DOWN: {

				if (k.mod.shift)
					break;

				bool found = selected_list.empty();

				for (int i = 0; i < scroll_childs->get_child_count(); i++) {

					HBoxContainer *hb = scroll_childs->get_child(i)->cast_to<HBoxContainer>();
					if (!hb) continue;

					String current = hb->get_meta("name");

					if (found) {
						selected_list.clear();
						selected_list.insert(current, hb->get_meta("main_scene"));

						int last_y_visible = scroll->get_v_scroll() + scroll->get_size().y;
						int offset_diff = (hb->get_pos().y + hb->get_size().y) - last_y_visible;

						if (offset_diff > 0)
							scroll->set_v_scroll(scroll->get_v_scroll() + offset_diff);

						_update_project_buttons();

						break;

					} else if (current == selected_list.back()->key()) {

						found = true;
					}
				}

			} break;
			case KEY_F: {
				if (k.mod.command)
					this->project_filter->search_box->grab_focus();
				else
					scancode_handled = false;
			} break;
			default: {
				scancode_handled = false;
			} break;
		}

		if (scancode_handled) {
			accept_event();
		}
	}
}

void ProjectManager::_favorite_pressed(Node *p_hb) {

	String clicked = p_hb->get_meta("name");
	bool favorite = !p_hb->get_meta("favorite");
	String proj = clicked.replace(":::", ":/");
	proj = proj.replace("::", "/");

	if (favorite) {
		EditorSettings::get_singleton()->set("favorite_projects/" + clicked, proj);
	} else {
		EditorSettings::get_singleton()->erase("favorite_projects/" + clicked);
	}
	EditorSettings::get_singleton()->save();
	call_deferred("_load_recent_projects");
}

void ProjectManager::_load_recent_projects() {

	ProjectListFilter::FilterOption filter_option = project_filter->get_filter_option();
	String search_term = project_filter->get_search_term();

	while (scroll_childs->get_child_count() > 0) {
		memdelete(scroll_childs->get_child(0));
	}

	Map<String, String> selected_list_copy = selected_list;

	List<PropertyInfo> properties;
	EditorSettings::get_singleton()->get_property_list(&properties);

	Color font_color = get_color("font_color", "Tree");

	List<ProjectItem> projects;
	List<ProjectItem> favorite_projects;

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

		String _name = E->get().name;
		if (!_name.begins_with("projects/") && !_name.begins_with("favorite_projects/"))
			continue;

		String path = EditorSettings::get_singleton()->get(_name);
		if (filter_option == ProjectListFilter::FILTER_PATH && search_term != "" && path.findn(search_term) == -1)
			continue;

		String project = _name.get_slice("/", 1);
		String conf = path.plus_file("engine.cfg");
		bool favorite = (_name.begins_with("favorite_projects/")) ? true : false;

		uint64_t last_modified = 0;
		if (FileAccess::exists(conf)) {
			last_modified = FileAccess::get_modified_time(conf);

			String fscache = path.plus_file(".fscache");
			if (FileAccess::exists(fscache)) {
				uint64_t cache_modified = FileAccess::get_modified_time(fscache);
				if (cache_modified > last_modified)
					last_modified = cache_modified;
			}

			ProjectItem item(project, path, conf, last_modified, favorite);
			if (favorite)
				favorite_projects.push_back(item);
			else
				projects.push_back(item);
		} else {
			//project doesn't exist on disk but it's in the XML settings file
			EditorSettings::get_singleton()->erase(_name); //remove it
		}
	}

	projects.sort();
	favorite_projects.sort();

	for (List<ProjectItem>::Element *E = projects.front(); E;) {
		List<ProjectItem>::Element *next = E->next();
		if (favorite_projects.find(E->get()) != NULL)
			projects.erase(E->get());
		E = next;
	}
	for (List<ProjectItem>::Element *E = favorite_projects.back(); E; E = E->prev()) {
		projects.push_front(E->get());
	}

	Ref<Texture> favorite_icon = get_icon("Favorites", "EditorIcons");

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

		ProjectItem &item = E->get();
		String project = item.project;
		String path = item.path;
		String conf = item.conf;
		bool is_favorite = item.favorite;

		Ref<ConfigFile> cf = memnew(ConfigFile);
		Error err = cf->load(conf);
		ERR_CONTINUE(err != OK);

		String project_name = TTR("Unnamed Project");

		if (cf->has_section_key("application", "name")) {
			project_name = static_cast<String>(cf->get_value("application", "name")).xml_unescape();
		}

		if (filter_option == ProjectListFilter::FILTER_NAME && search_term != "" && project_name.findn(search_term) == -1)
			continue;

		Ref<Texture> icon;
		if (cf->has_section_key("application", "icon")) {
			String appicon = cf->get_value("application", "icon");
			if (appicon != "") {
				Image img;
				Error err = img.load(appicon.replace_first("res://", path + "/"));
				if (err == OK) {

					img.resize(64, 64);
					Ref<ImageTexture> it = memnew(ImageTexture);
					it->create_from_image(img);
					icon = it;
				}
			}
		}

		if (icon.is_null()) {
			icon = get_icon("DefaultProjectIcon", "EditorIcons");
		}

		String main_scene;
		if (cf->has_section_key("application", "main_scene")) {
			main_scene = cf->get_value("application", "main_scene");
		}

		selected_list_copy.erase(project);

		HBoxContainer *hb = memnew(HBoxContainer);
		hb->set_meta("name", project);
		hb->set_meta("main_scene", main_scene);
		hb->set_meta("favorite", is_favorite);
		hb->connect("draw", this, "_panel_draw", varray(hb));
		hb->connect("input_event", this, "_panel_input", varray(hb));

		VBoxContainer *favorite_box = memnew(VBoxContainer);
		TextureButton *favorite = memnew(TextureButton);
		favorite->set_normal_texture(favorite_icon);
		if (!is_favorite)
			favorite->set_opacity(0.2);
		favorite->set_v_size_flags(SIZE_EXPAND);
		favorite->connect("pressed", this, "_favorite_pressed", varray(hb));
		favorite_box->add_child(favorite);
		hb->add_child(favorite_box);

		TextureFrame *tf = memnew(TextureFrame);
		tf->set_texture(icon);
		tf->set_v_size_flags(SIZE_EXPAND);
		hb->add_child(tf);

		VBoxContainer *vb = memnew(VBoxContainer);
		vb->set_name("project");
		vb->set_h_size_flags(SIZE_EXPAND_FILL);
		hb->add_child(vb);
		Control *ec = memnew(Control);
		ec->set_custom_minimum_size(Size2(0, 1));
		vb->add_child(ec);
		Label *title = memnew(Label(project_name));
		title->add_font_override("font", get_font("large", "Fonts"));
		title->add_color_override("font_color", font_color);
		title->set_clip_text(true);
		vb->add_child(title);
		Label *fpath = memnew(Label(path));
		fpath->set_name("path");
		vb->add_child(fpath);
		fpath->set_opacity(0.5);
		fpath->add_color_override("font_color", font_color);
		fpath->set_clip_text(true);

		scroll_childs->add_child(hb);
	}

	for (Map<String, String>::Element *E = selected_list_copy.front(); E; E = E->next()) {
		String key = E->key();
		selected_list.erase(key);
	}

	scroll->set_v_scroll(0);

	_update_project_buttons();

	EditorSettings::get_singleton()->save();

	tabs->set_current_tab(0);
}

void ProjectManager::_on_project_created(const String &dir) {
	bool has_already = false;
	for (int i = 0; i < scroll_childs->get_child_count(); i++) {
		HBoxContainer *hb = scroll_childs->get_child(i)->cast_to<HBoxContainer>();
		Label *fpath = hb->get_node(NodePath("project/path"))->cast_to<Label>();
		if (fpath->get_text() == dir) {
			has_already = true;
			break;
		}
	}
	if (has_already) {
		_update_scroll_pos(dir);
	} else {
		_load_recent_projects();
		_update_scroll_pos(dir);
	}
	_open_project();
}

void ProjectManager::_update_scroll_pos(const String &dir) {
	for (int i = 0; i < scroll_childs->get_child_count(); i++) {
		HBoxContainer *hb = scroll_childs->get_child(i)->cast_to<HBoxContainer>();
		Label *fpath = hb->get_node(NodePath("project/path"))->cast_to<Label>();
		if (fpath->get_text() == dir) {
			last_clicked = hb->get_meta("name");
			selected_list.clear();
			selected_list.insert(hb->get_meta("name"), hb->get_meta("main_scene"));
			_update_project_buttons();
			int last_y_visible = scroll->get_v_scroll() + scroll->get_size().y;
			int offset_diff = (hb->get_pos().y + hb->get_size().y) - last_y_visible;

			if (offset_diff > 0)
				scroll->set_v_scroll(scroll->get_v_scroll() + offset_diff);
			break;
		}
	}
}

void ProjectManager::_open_project_confirm() {

	for (Map<String, String>::Element *E = selected_list.front(); E; E = E->next()) {
		const String &selected = E->key();
		String path = EditorSettings::get_singleton()->get("projects/" + selected);
		print_line("OPENING: " + path + " (" + selected + ")");

		List<String> args;

		args.push_back("-path");
		args.push_back(path);

		args.push_back("-editor");

		if (OS::get_singleton()->is_disable_crash_handler()) {
			args.push_back("--disable-crash-handler");
		}

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

		OS::ProcessID pid = 0;
		Error err = OS::get_singleton()->execute(exec, args, false, &pid);
		ERR_FAIL_COND(err);
	}

	get_tree()->quit();
}

void ProjectManager::_open_project() {

	if (selected_list.size() < 1) {
		return;
	}

	if (selected_list.size() > 1) {
		multi_open_ask->set_text(TTR("Are you sure to open more than one project?"));
		multi_open_ask->popup_centered_minsize();
	} else {
		_open_project_confirm();
	}
}

void ProjectManager::_run_project_confirm() {

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

		const String &selected_main = E->get();
		if (selected_main == "") continue;

		const String &selected = E->key();
		String path = EditorSettings::get_singleton()->get("projects/" + selected);
		print_line("OPENING: " + path + " (" + selected + ")");

		List<String> args;

		args.push_back("-path");
		args.push_back(path);

		if (OS::get_singleton()->is_disable_crash_handler()) {
			args.push_back("--disable-crash-handler");
		}

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

		OS::ProcessID pid = 0;
		Error err = OS::get_singleton()->execute(exec, args, false, &pid);
		ERR_FAIL_COND(err);
	}
	//	get_scene()->quit(); do not quit
}

void ProjectManager::_run_project() {

	if (selected_list.size() < 1) {
		return;
	}

	if (selected_list.size() > 1) {
		multi_run_ask->set_text(TTR("Are you sure to run more than one project?"));
		multi_run_ask->popup_centered_minsize();
	} else {
		_run_project_confirm();
	}
}

void ProjectManager::_scan_dir(DirAccess *da, float pos, float total, List<String> *r_projects) {

	List<String> subdirs;
	da->list_dir_begin();
	String n = da->get_next();
	while (n != String()) {
		if (da->current_is_dir() && !n.begins_with(".")) {
			subdirs.push_front(n);
		} else if (n == "engine.cfg") {
			r_projects->push_back(da->get_current_dir());
		}
		n = da->get_next();
	}
	da->list_dir_end();
	int m = 0;
	for (List<String>::Element *E = subdirs.front(); E; E = E->next()) {

		da->change_dir(E->get());

		float slice = total / subdirs.size();
		_scan_dir(da, pos + slice * m, slice, r_projects);
		da->change_dir("..");
		m++;
	}
}

void ProjectManager::_scan_begin(const String &p_base) {

	print_line("SCAN PROJECTS AT: " + p_base);
	List<String> projects;
	DirAccess *da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
	da->change_dir(p_base);
	_scan_dir(da, 0, 1, &projects);
	memdelete(da);
	print_line("found: " + itos(projects.size()) + " projects.");

	for (List<String>::Element *E = projects.front(); E; E = E->next()) {
		String proj = E->get().replace("/", "::");
		EditorSettings::get_singleton()->set("projects/" + proj, E->get());
	}
	EditorSettings::get_singleton()->save();
	_load_recent_projects();
}

void ProjectManager::_scan_projects() {

	scan_dir->popup_centered_ratio();
}

void ProjectManager::_new_project() {

	npdialog->set_mode(NewProjectDialog::MODE_NEW);
	npdialog->show_dialog();
}

void ProjectManager::_import_project() {

	npdialog->set_mode(NewProjectDialog::MODE_IMPORT);
	npdialog->show_dialog();
}

void ProjectManager::_erase_project_confirm() {

	if (selected_list.size() == 0) {
		return;
	}
	for (Map<String, String>::Element *E = selected_list.front(); E; E = E->next()) {
		EditorSettings::get_singleton()->erase("projects/" + E->key());
		EditorSettings::get_singleton()->erase("favorite_projects/" + E->key());
	}
	EditorSettings::get_singleton()->save();
	selected_list.clear();
	last_clicked = "";
	_load_recent_projects();
}

void ProjectManager::_erase_project() {

	if (selected_list.size() == 0)
		return;

	erase_ask->set_text(TTR("Remove project from the list? (Folder contents will not be modified)"));
	erase_ask->popup_centered_minsize();
}

void ProjectManager::_exit_dialog() {

	get_tree()->quit();
}

void ProjectManager::_install_project(const String &p_zip_path, const String &p_title) {

	npdialog->set_mode(NewProjectDialog::MODE_INSTALL);
	npdialog->set_zip_path(p_zip_path);
	npdialog->set_zip_title(p_title);
	npdialog->show_dialog();
}

void ProjectManager::_files_dropped(StringArray p_files, int p_screen) {
	Set<String> folders_set;
	DirAccess *da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
	for (int i = 0; i < p_files.size(); i++) {
		String file = p_files[i];
		folders_set.insert(da->dir_exists(file) ? file : file.get_base_dir());
	}
	memdelete(da);
	if (folders_set.size() > 0) {
		StringArray folders;
		for (Set<String>::Element *E = folders_set.front(); E; E = E->next()) {
			folders.append(E->get());
		}

		bool confirm = true;
		if (folders.size() == 1) {
			DirAccess *dir = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
			if (dir->change_dir(folders[0]) == OK) {
				dir->list_dir_begin();
				String file = dir->get_next();
				while (confirm && file != String()) {
					if (!dir->current_is_dir() && file.ends_with("engine.cfg")) {
						confirm = false;
					}
					file = dir->get_next();
				}
				dir->list_dir_end();
			}
			memdelete(dir);
		}
		if (confirm) {
			multi_scan_ask->get_ok()->disconnect("pressed", this, "_scan_multiple_folders");
			multi_scan_ask->get_ok()->connect("pressed", this, "_scan_multiple_folders", varray(folders));
			multi_scan_ask->set_text(vformat(TTR("You are about the scan %s folders for existing Godot projects. Do you confirm?"), folders.size()));
			multi_scan_ask->popup_centered_minsize();
		} else {
			_scan_multiple_folders(folders);
		}
	}
}

void ProjectManager::_scan_multiple_folders(StringArray p_files) {
	for (int i = 0; i < p_files.size(); i++) {
		_scan_begin(p_files.get(i));
	}
}

void ProjectManager::_bind_methods() {

	ObjectTypeDB::bind_method("_open_project", &ProjectManager::_open_project);
	ObjectTypeDB::bind_method("_open_project_confirm", &ProjectManager::_open_project_confirm);
	ObjectTypeDB::bind_method("_run_project", &ProjectManager::_run_project);
	ObjectTypeDB::bind_method("_run_project_confirm", &ProjectManager::_run_project_confirm);
	ObjectTypeDB::bind_method("_scan_projects", &ProjectManager::_scan_projects);
	ObjectTypeDB::bind_method("_scan_begin", &ProjectManager::_scan_begin);
	ObjectTypeDB::bind_method("_import_project", &ProjectManager::_import_project);
	ObjectTypeDB::bind_method("_new_project", &ProjectManager::_new_project);
	ObjectTypeDB::bind_method("_erase_project", &ProjectManager::_erase_project);
	ObjectTypeDB::bind_method("_erase_project_confirm", &ProjectManager::_erase_project_confirm);
	ObjectTypeDB::bind_method("_exit_dialog", &ProjectManager::_exit_dialog);
	ObjectTypeDB::bind_method("_load_recent_projects", &ProjectManager::_load_recent_projects);
	ObjectTypeDB::bind_method("_on_project_created", &ProjectManager::_on_project_created);
	ObjectTypeDB::bind_method("_update_scroll_pos", &ProjectManager::_update_scroll_pos);
	ObjectTypeDB::bind_method("_panel_draw", &ProjectManager::_panel_draw);
	ObjectTypeDB::bind_method("_panel_input", &ProjectManager::_panel_input);
	ObjectTypeDB::bind_method("_unhandled_input", &ProjectManager::_unhandled_input);
	ObjectTypeDB::bind_method("_favorite_pressed", &ProjectManager::_favorite_pressed);
	ObjectTypeDB::bind_method("_install_project", &ProjectManager::_install_project);
	ObjectTypeDB::bind_method("_files_dropped", &ProjectManager::_files_dropped);
	ObjectTypeDB::bind_method(_MD("_scan_multiple_folders", "files"), &ProjectManager::_scan_multiple_folders);
}

ProjectManager::ProjectManager() {

	// load settings
	if (!EditorSettings::get_singleton())
		EditorSettings::create();

	EditorSettings::get_singleton()->set_optimize_save(false); //just write settings as they came

	{
		int dpi_mode = EditorSettings::get_singleton()->get("global/hidpi_mode");
		if (dpi_mode == 0) {
			editor_set_hidpi(OS::get_singleton()->get_screen_dpi(0) >= 192 && OS::get_singleton()->get_screen_size(OS::get_singleton()->get_current_screen()).x > 2000);
		} else if (dpi_mode == 2) {
			editor_set_hidpi(true);
		} else {
			editor_set_hidpi(false);
		}
	}

	FileDialog::set_default_show_hidden_files(EditorSettings::get_singleton()->get("file_dialog/show_hidden_files"));

	set_area_as_parent_rect();
	set_theme(create_default_theme());

	gui_base = memnew(Control);
	add_child(gui_base);
	gui_base->set_area_as_parent_rect();

	Panel *panel = memnew(Panel);
	gui_base->add_child(panel);
	panel->set_area_as_parent_rect();

	VBoxContainer *vb = memnew(VBoxContainer);
	panel->add_child(vb);
	vb->set_area_as_parent_rect(20 * EDSCALE);
	vb->set_margin(MARGIN_TOP, 4 * EDSCALE);
	vb->set_margin(MARGIN_BOTTOM, 4 * EDSCALE);
	vb->add_constant_override("separation", 15 * EDSCALE);

	String cp;
	cp.push_back(0xA9);
	cp.push_back(0);
	OS::get_singleton()->set_window_title(_MKSTR(VERSION_NAME) + String(" - ") + TTR("Project Manager") + " - " + cp + " 2008-2017 Juan Linietsky, Ariel Manzur & Godot Contributors");

	HBoxContainer *top_hb = memnew(HBoxContainer);
	vb->add_child(top_hb);
	CenterContainer *ccl = memnew(CenterContainer);
	Label *l = memnew(Label);
	l->set_text(_MKSTR(VERSION_NAME) + String(" - ") + TTR("Project Manager"));
	l->add_font_override("font", get_font("doc", "EditorFonts"));
	ccl->add_child(l);
	top_hb->add_child(ccl);
	top_hb->add_spacer();
	l = memnew(Label);
	l->set_text("v" VERSION_MKSTRING);
	//l->add_font_override("font",get_font("bold","Fonts"));
	l->set_align(Label::ALIGN_CENTER);
	top_hb->add_child(l);
	//vb->add_child(memnew(HSeparator));
	//vb->add_margin_child("\n",memnew(Control));

	tabs = memnew(TabContainer);
	vb->add_child(tabs);
	tabs->set_v_size_flags(SIZE_EXPAND_FILL);

	HBoxContainer *tree_hb = memnew(HBoxContainer);
	projects_hb = tree_hb;

	projects_hb->set_name(TTR("Project List"));

	tabs->add_child(tree_hb);

	VBoxContainer *search_tree_vb = memnew(VBoxContainer);
	search_tree_vb->set_h_size_flags(SIZE_EXPAND_FILL);
	tree_hb->add_child(search_tree_vb);

	HBoxContainer *search_box = memnew(HBoxContainer);
	search_box->add_spacer(true);
	project_filter = memnew(ProjectListFilter);
	search_box->add_child(project_filter);
	project_filter->connect("filter_changed", this, "_load_recent_projects");
	project_filter->set_custom_minimum_size(Size2(250, 10));
	search_tree_vb->add_child(search_box);

	PanelContainer *pc = memnew(PanelContainer);
	pc->add_style_override("panel", get_stylebox("bg", "Tree"));
	search_tree_vb->add_child(pc);
	pc->set_v_size_flags(SIZE_EXPAND_FILL);

	scroll = memnew(ScrollContainer);
	pc->add_child(scroll);
	scroll->set_enable_h_scroll(false);

	VBoxContainer *tree_vb = memnew(VBoxContainer);
	tree_hb->add_child(tree_vb);
	scroll_childs = memnew(VBoxContainer);
	scroll_childs->set_h_size_flags(SIZE_EXPAND_FILL);
	scroll->add_child(scroll_childs);

	//HBoxContainer *hb = memnew( HBoxContainer );
	//vb->add_child(hb);

	Button *open = memnew(Button);
	open->set_text(TTR("Edit"));
	tree_vb->add_child(open);
	open->connect("pressed", this, "_open_project");
	open_btn = open;

	Button *run = memnew(Button);
	run->set_text(TTR("Run"));
	tree_vb->add_child(run);
	run->connect("pressed", this, "_run_project");
	run_btn = run;

	tree_vb->add_child(memnew(HSeparator));

	Button *scan = memnew(Button);
	scan->set_text(TTR("Scan"));
	tree_vb->add_child(scan);
	scan->connect("pressed", this, "_scan_projects");

	tree_vb->add_child(memnew(HSeparator));

	scan_dir = memnew(FileDialog);
	scan_dir->set_access(FileDialog::ACCESS_FILESYSTEM);
	scan_dir->set_mode(FileDialog::MODE_OPEN_DIR);
	scan_dir->set_title(TTR("Select a Folder to Scan")); // must be after mode or it's overridden
	scan_dir->set_current_dir(EditorSettings::get_singleton()->get("global/default_project_path"));
	gui_base->add_child(scan_dir);
	scan_dir->connect("dir_selected", this, "_scan_begin");

	Button *create = memnew(Button);
	create->set_text(TTR("New Project"));
	tree_vb->add_child(create);
	create->connect("pressed", this, "_new_project");

	Button *import = memnew(Button);
	import->set_text(TTR("Import"));
	tree_vb->add_child(import);
	import->connect("pressed", this, "_import_project");

	Button *erase = memnew(Button);
	erase->set_text(TTR("Remove"));
	tree_vb->add_child(erase);
	erase->connect("pressed", this, "_erase_project");
	erase_btn = erase;

	tree_vb->add_spacer();

	if (StreamPeerSSL::is_available()) {
		asset_library = memnew(EditorAssetLibrary(true));
		asset_library->set_name(TTR("Templates"));
		tabs->add_child(asset_library);
		asset_library->connect("install_asset", this, "_install_project");
	} else {
		WARN_PRINT("Asset Library not available, as it requires SSL to work.");
	}

	CenterContainer *cc = memnew(CenterContainer);
	Button *cancel = memnew(Button);
	cancel->set_text(TTR("Exit"));
	cancel->set_custom_minimum_size(Size2(100, 1) * EDSCALE);
	cc->add_child(cancel);
	cancel->connect("pressed", this, "_exit_dialog");
	vb->add_child(cc);

	//

	erase_ask = memnew(ConfirmationDialog);
	erase_ask->get_ok()->set_text(TTR("Remove"));
	erase_ask->get_ok()->connect("pressed", this, "_erase_project_confirm");

	gui_base->add_child(erase_ask);

	multi_open_ask = memnew(ConfirmationDialog);
	multi_open_ask->get_ok()->set_text(TTR("Edit"));
	multi_open_ask->get_ok()->connect("pressed", this, "_open_project_confirm");

	gui_base->add_child(multi_open_ask);

	multi_run_ask = memnew(ConfirmationDialog);
	multi_run_ask->get_ok()->set_text(TTR("Run"));
	multi_run_ask->get_ok()->connect("pressed", this, "_run_project_confirm");

	gui_base->add_child(multi_run_ask);

	multi_scan_ask = memnew(ConfirmationDialog);
	multi_scan_ask->get_ok()->set_text(TTR("Scan"));

	gui_base->add_child(multi_scan_ask);

	OS::get_singleton()->set_low_processor_usage_mode(true);

	npdialog = memnew(NewProjectDialog);
	gui_base->add_child(npdialog);

	npdialog->connect("project_created", this, "_on_project_created");
	_load_recent_projects();

	if (EditorSettings::get_singleton()->get("global/autoscan_project_path")) {
		_scan_begin(EditorSettings::get_singleton()->get("global/autoscan_project_path"));
	}

	//get_ok()->set_text("Open");
	//get_ok()->set_text("Exit");

	last_clicked = "";

	SceneTree::get_singleton()->connect("files_dropped", this, "_files_dropped");

	gui_base->set_theme(create_editor_theme());
}

ProjectManager::~ProjectManager() {

	if (EditorSettings::get_singleton())
		EditorSettings::destroy();
}

void ProjectListFilter::_setup_filters() {

	filter_option->clear();
	filter_option->add_item(TTR("Name"));
	filter_option->add_item(TTR("Path"));
}

void ProjectListFilter::_command(int p_command) {
	switch (p_command) {

		case CMD_CLEAR_FILTER: {
			if (search_box->get_text() != "") {
				search_box->clear();
				emit_signal("filter_changed");
			}
		} break;
	}
}

void ProjectListFilter::_search_text_changed(const String &p_newtext) {
	emit_signal("filter_changed");
}

String ProjectListFilter::get_search_term() {
	return search_box->get_text().strip_edges();
}

ProjectListFilter::FilterOption ProjectListFilter::get_filter_option() {
	return _current_filter;
}

void ProjectListFilter::_filter_option_selected(int p_idx) {
	FilterOption selected = (FilterOption)(filter_option->get_selected());
	if (_current_filter != selected) {
		_current_filter = selected;
		emit_signal("filter_changed");
	}
}

void ProjectListFilter::_notification(int p_what) {
	switch (p_what) {
		case NOTIFICATION_ENTER_TREE: {
			clear_search_button->set_icon(get_icon("CloseHover", "EditorIcons"));
		} break;
	}
}

void ProjectListFilter::_bind_methods() {

	ObjectTypeDB::bind_method(_MD("_command"), &ProjectListFilter::_command);
	ObjectTypeDB::bind_method(_MD("_search_text_changed"), &ProjectListFilter::_search_text_changed);
	ObjectTypeDB::bind_method(_MD("_filter_option_selected"), &ProjectListFilter::_filter_option_selected);

	ADD_SIGNAL(MethodInfo("filter_changed"));
}

ProjectListFilter::ProjectListFilter() {

	editor_initialize_certificates(); //for asset sharing

	_current_filter = FILTER_NAME;

	filter_option = memnew(OptionButton);
	filter_option->set_custom_minimum_size(Size2(80 * EDSCALE, 10 * EDSCALE));
	filter_option->set_clip_text(true);
	filter_option->connect("item_selected", this, "_filter_option_selected");
	add_child(filter_option);

	_setup_filters();

	search_box = memnew(LineEdit);
	search_box->connect("text_changed", this, "_search_text_changed");
	search_box->set_h_size_flags(SIZE_EXPAND_FILL);
	add_child(search_box);

	clear_search_button = memnew(ToolButton);
	clear_search_button->connect("pressed", this, "_command", make_binds(CMD_CLEAR_FILTER));
	add_child(clear_search_button);
}