/*************************************************************************/
/*  version_control_editor_plugin.cpp                                    */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2022 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 "version_control_editor_plugin.h"

#include "core/bind/core_bind.h"
#include "core/os/keyboard.h"
#include "core/os/time.h"
#include "core/script_language.h"
#include "editor/editor_file_system.h"
#include "editor/editor_node.h"
#include "editor/editor_scale.h"
#include "editor/filesystem_dock.h"

#define CHECK_PLUGIN_INITIALIZED() \
	ERR_FAIL_COND_MSG(!EditorVCSInterface::get_singleton(), "No VCS plugin is initialized. Select a Version Control Plugin from Project menu.");

VersionControlEditorPlugin *VersionControlEditorPlugin::singleton = nullptr;

void VersionControlEditorPlugin::_bind_methods() {
	ClassDB::bind_method(D_METHOD("_initialize_vcs"), &VersionControlEditorPlugin::_initialize_vcs);
	ClassDB::bind_method(D_METHOD("_set_credentials"), &VersionControlEditorPlugin::_set_credentials);
	ClassDB::bind_method(D_METHOD("_update_set_up_warning"), &VersionControlEditorPlugin::_update_set_up_warning);
	ClassDB::bind_method(D_METHOD("_commit"), &VersionControlEditorPlugin::_commit);
	ClassDB::bind_method(D_METHOD("_refresh_stage_area"), &VersionControlEditorPlugin::_refresh_stage_area);
	ClassDB::bind_method(D_METHOD("_move_all"), &VersionControlEditorPlugin::_move_all);
	ClassDB::bind_method(D_METHOD("_load_diff"), &VersionControlEditorPlugin::_load_diff);
	ClassDB::bind_method(D_METHOD("_display_diff"), &VersionControlEditorPlugin::_display_diff);
	ClassDB::bind_method(D_METHOD("_item_activated"), &VersionControlEditorPlugin::_item_activated);
	ClassDB::bind_method(D_METHOD("_update_branch_create_button"), &VersionControlEditorPlugin::_update_branch_create_button);
	ClassDB::bind_method(D_METHOD("_update_remote_create_button"), &VersionControlEditorPlugin::_update_remote_create_button);
	ClassDB::bind_method(D_METHOD("_update_commit_button"), &VersionControlEditorPlugin::_update_commit_button);
	ClassDB::bind_method(D_METHOD("_refresh_branch_list"), &VersionControlEditorPlugin::_refresh_branch_list);
	ClassDB::bind_method(D_METHOD("_refresh_commit_list"), &VersionControlEditorPlugin::_refresh_commit_list);
	ClassDB::bind_method(D_METHOD("_set_commit_list_size"), &VersionControlEditorPlugin::_set_commit_list_size);
	ClassDB::bind_method(D_METHOD("_refresh_remote_list"), &VersionControlEditorPlugin::_refresh_remote_list);
	ClassDB::bind_method(D_METHOD("_ssh_public_key_selected"), &VersionControlEditorPlugin::_ssh_public_key_selected);
	ClassDB::bind_method(D_METHOD("_ssh_private_key_selected"), &VersionControlEditorPlugin::_ssh_private_key_selected);
	ClassDB::bind_method(D_METHOD("_commit_message_gui_input"), &VersionControlEditorPlugin::_commit_message_gui_input);
	ClassDB::bind_method(D_METHOD("_cell_button_pressed"), &VersionControlEditorPlugin::_cell_button_pressed);
	ClassDB::bind_method(D_METHOD("_discard_all"), &VersionControlEditorPlugin::_discard_all);
	ClassDB::bind_method(D_METHOD("_create_branch"), &VersionControlEditorPlugin::_create_branch);
	ClassDB::bind_method(D_METHOD("_create_remote"), &VersionControlEditorPlugin::_create_remote);
	ClassDB::bind_method(D_METHOD("_remove_branch"), &VersionControlEditorPlugin::_remove_branch);
	ClassDB::bind_method(D_METHOD("_remove_remote"), &VersionControlEditorPlugin::_remove_remote);
	ClassDB::bind_method(D_METHOD("_branch_item_selected"), &VersionControlEditorPlugin::_branch_item_selected);
	ClassDB::bind_method(D_METHOD("_remote_selected"), &VersionControlEditorPlugin::_remote_selected);
	ClassDB::bind_method(D_METHOD("_fetch"), &VersionControlEditorPlugin::_fetch);
	ClassDB::bind_method(D_METHOD("_pull"), &VersionControlEditorPlugin::_pull);
	ClassDB::bind_method(D_METHOD("_push"), &VersionControlEditorPlugin::_push);
	ClassDB::bind_method(D_METHOD("_extra_option_selected"), &VersionControlEditorPlugin::_extra_option_selected);
	ClassDB::bind_method(D_METHOD("_update_extra_options"), &VersionControlEditorPlugin::_update_extra_options);
	ClassDB::bind_method(D_METHOD("_popup_branch_remove_confirm"), &VersionControlEditorPlugin::_popup_branch_remove_confirm);
	ClassDB::bind_method(D_METHOD("_popup_remote_remove_confirm"), &VersionControlEditorPlugin::_popup_remote_remove_confirm);

	ClassDB::bind_method(D_METHOD("popup_vcs_set_up_dialog"), &VersionControlEditorPlugin::popup_vcs_set_up_dialog);
}

void VersionControlEditorPlugin::_notification(int p_what) {
	if (p_what == NOTIFICATION_READY) {
		String installed_plugin = GLOBAL_GET("editor/version_control_plugin_name");
		bool has_autoload_enable = GLOBAL_GET("editor/version_control_autoload_on_startup");

		if (installed_plugin != "" && has_autoload_enable) {
			if (_load_plugin(installed_plugin)) {
				_set_up();
				_set_credentials();
			}
		}
	}
}

void VersionControlEditorPlugin::_populate_available_vcs_names() {
	static bool called = false;

	if (!called) {
		List<StringName> available_plugins = get_available_vcs_names();
		for (int i = 0; i < available_plugins.size(); i++) {
			set_up_choice->add_item(available_plugins[i]);
		}

		called = true;
	}
}

VersionControlEditorPlugin *VersionControlEditorPlugin::get_singleton() {
	return singleton ? singleton : memnew(VersionControlEditorPlugin);
}

void VersionControlEditorPlugin::popup_vcs_set_up_dialog(const Control *p_gui_base) {
	fetch_available_vcs_plugin_names();
	List<StringName> available_plugins = get_available_vcs_names();
	if (available_plugins.size() >= 1) {
		Size2 popup_size = Size2(400, 100);
		Size2 window_size = p_gui_base->get_viewport_rect().size;
		popup_size.x = MIN(window_size.x * 0.5, popup_size.x);
		popup_size.y = MIN(window_size.y * 0.5, popup_size.y);

		_populate_available_vcs_names();

		set_up_dialog->popup_centered_clamped(popup_size * EDSCALE);
	} else {
		EditorNode::get_singleton()->show_warning(TTR("No VCS plugins are available."), TTR("Error"));
	}
}

void VersionControlEditorPlugin::_initialize_vcs() {
	ERR_FAIL_COND_MSG(EditorVCSInterface::get_singleton(), EditorVCSInterface::get_singleton()->get_vcs_name() + " is already active.");

	const int id = set_up_choice->get_selected_id();
	String selected_plugin = set_up_choice->get_item_text(id);

	if (_load_plugin(selected_plugin)) {
		_set_up();

		ProjectSettings::get_singleton()->set("editor/version_control_autoload_on_startup", true);
		ProjectSettings::get_singleton()->set("editor/version_control_plugin_name", selected_plugin);
		ProjectSettings::get_singleton()->save();
	}
}

void VersionControlEditorPlugin::_set_credentials() {
	CHECK_PLUGIN_INITIALIZED();

	String username = set_up_username->get_text();
	String password = set_up_password->get_text();
	String ssh_public_key = set_up_ssh_public_key_path->get_text();
	String ssh_private_key = set_up_ssh_private_key_path->get_text();
	String ssh_passphrase = set_up_ssh_passphrase->get_text();

	EditorVCSInterface::get_singleton()->set_credentials(
			username,
			password,
			ssh_public_key,
			ssh_private_key,
			ssh_passphrase);

	EditorSettings::get_singleton()->set_setting("version_control/username", username);
	EditorSettings::get_singleton()->set_setting("version_control/ssh_public_key_path", ssh_public_key);
	EditorSettings::get_singleton()->set_setting("version_control/ssh_private_key_path", ssh_private_key);
}

bool VersionControlEditorPlugin::_load_plugin(String p_name) {
	String path = ScriptServer::get_global_class_path(p_name);
	Ref<Script> script = ResourceLoader::load(path);

	ERR_FAIL_COND_V_MSG(!script.is_valid(), false, "VCS Plugin path is invalid");

	EditorVCSInterface *vcs_interface = memnew(EditorVCSInterface);
	ScriptInstance *plugin_script_instance = script->instance_create(vcs_interface);

	ERR_FAIL_COND_V_MSG(!plugin_script_instance, false, "Failed to create plugin script instance.");

	// The plugin is attached as a script to the VCS interface singleton as a proxy end-point
	vcs_interface->set_script_instance(plugin_script_instance);

	EditorVCSInterface::set_singleton(vcs_interface);

	return true;
}

void VersionControlEditorPlugin::_set_up() {
	register_editor();
	EditorFileSystem::get_singleton()->connect("filesystem_changed", this, "_refresh_stage_area");

	String res_dir = OS::get_singleton()->get_resource_dir();

	ERR_FAIL_COND_MSG(!EditorVCSInterface::get_singleton()->initialize(res_dir), "VCS was not initialized.");

	_refresh_stage_area();
	_refresh_commit_list();
	_refresh_branch_list();
	_refresh_remote_list();
}

void VersionControlEditorPlugin::_update_set_up_warning(String p_new_text) {
	bool empty_settings = set_up_username->get_text().strip_edges().empty() &&
			set_up_password->get_text().empty() &&
			set_up_ssh_public_key_path->get_text().strip_edges().empty() &&
			set_up_ssh_private_key_path->get_text().strip_edges().empty() &&
			set_up_ssh_passphrase->get_text().empty();

	if (empty_settings) {
		set_up_warning_text->add_color_override("font_color", EditorNode::get_singleton()->get_gui_base()->get_color("warning_color", "Editor"));
		set_up_warning_text->set_text(TTR("Remote settings are empty. VCS features that use the network may not work."));
	} else {
		set_up_warning_text->set_text("");
	}
}

void VersionControlEditorPlugin::_refresh_branch_list() {
	CHECK_PLUGIN_INITIALIZED();

	List<String> branch_list = EditorVCSInterface::get_singleton()->get_branch_list();
	branch_select->clear();

	branch_select->set_disabled(branch_list.empty());

	String current_branch = EditorVCSInterface::get_singleton()->get_current_branch_name();

	for (int i = 0; i < branch_list.size(); i++) {
		branch_select->add_icon_item(EditorNode::get_singleton()->get_gui_base()->get_icon("VcsBranches", "EditorIcons"), branch_list[i], i);

		if (branch_list[i] == current_branch) {
			branch_select->select(i);
		}
	}
}

String VersionControlEditorPlugin::_get_date_string_from(int64_t p_unix_timestamp, int64_t p_offset_minutes) const {
	return vformat(
			"%s %s",
			Time::get_singleton()->get_datetime_string_from_unix_time(p_unix_timestamp + p_offset_minutes * 60, true),
			Time::get_singleton()->get_offset_string_from_offset_minutes(p_offset_minutes));
}

void VersionControlEditorPlugin::_refresh_commit_list() {
	CHECK_PLUGIN_INITIALIZED();

	commit_list->get_root()->clear_children();

	List<EditorVCSInterface::Commit> commit_info_list = EditorVCSInterface::get_singleton()->get_previous_commits(commit_list_size_button->get_selected_metadata());

	for (List<EditorVCSInterface::Commit>::Element *e = commit_info_list.front(); e; e = e->next()) {
		EditorVCSInterface::Commit commit = e->get();
		TreeItem *item = commit_list->create_item(commit_list->get_root());

		// Only display the first line of a commit message
		int line_ending = commit.msg.find_char('\n');
		String commit_display_msg = commit.msg.substr(0, line_ending);
		String commit_date_string = _get_date_string_from(commit.unix_timestamp, commit.offset_minutes);

		Dictionary meta_data;
		meta_data["commit_id"] = commit.id;
		meta_data["commit_title"] = commit_display_msg;
		meta_data["commit_subtitle"] = commit.msg.substr(line_ending).strip_edges();
		meta_data["commit_unix_timestamp"] = commit.unix_timestamp;
		meta_data["commit_author"] = commit.author;
		meta_data["commit_date_string"] = commit_date_string;

		item->set_text(0, commit_display_msg);
		item->set_text(1, commit_date_string);
		item->set_text(2, commit.author.strip_edges());
		item->set_metadata(0, meta_data);
	}
}

void VersionControlEditorPlugin::_set_commit_list_size(int p_index) {
	_refresh_commit_list();
}

void VersionControlEditorPlugin::_refresh_remote_list() {
	CHECK_PLUGIN_INITIALIZED();

	List<String> remotes = EditorVCSInterface::get_singleton()->get_remotes();

	String current_remote = remote_select->get_selected_metadata();
	remote_select->clear();

	remote_select->set_disabled(remotes.empty());

	for (int i = 0; i < remotes.size(); i++) {
		remote_select->add_icon_item(EditorNode::get_singleton()->get_gui_base()->get_icon("ArrowUp", "EditorIcons"), remotes[i], i);
		remote_select->set_item_metadata(i, remotes[i]);

		if (remotes[i] == current_remote) {
			remote_select->select(i);
		}
	}
}

void VersionControlEditorPlugin::_commit() {
	CHECK_PLUGIN_INITIALIZED();

	String msg = commit_message->get_text().strip_edges();

	ERR_FAIL_COND_MSG(msg.empty(), TTR("No commit message was provided."));

	EditorVCSInterface::get_singleton()->commit(msg);

	version_control_dock_button->set_pressed(false);

	commit_message->release_focus();
	commit_button->release_focus();
	commit_message->set_text("");

	_refresh_stage_area();
	_refresh_commit_list();
	_refresh_branch_list();
	_clear_diff();
}

void VersionControlEditorPlugin::_branch_item_selected(int p_index) {
	CHECK_PLUGIN_INITIALIZED();

	String branch_name = branch_select->get_item_text(p_index);
	EditorVCSInterface::get_singleton()->checkout_branch(branch_name);

	EditorFileSystem::get_singleton()->scan_changes();
	ScriptEditor::get_singleton()->reload_scripts();

	_refresh_branch_list();
	_refresh_commit_list();
	_refresh_stage_area();
	_clear_diff();

	_update_opened_tabs();
}

void VersionControlEditorPlugin::_remote_selected(int p_index) {
	_refresh_remote_list();
}

void VersionControlEditorPlugin::_ssh_public_key_selected(String p_path) {
	set_up_ssh_public_key_path->set_text(p_path);
}

void VersionControlEditorPlugin::_ssh_private_key_selected(String p_path) {
	set_up_ssh_private_key_path->set_text(p_path);
}

void VersionControlEditorPlugin::_create_branch() {
	CHECK_PLUGIN_INITIALIZED();

	String new_branch_name = branch_create_name_input->get_text().strip_edges();

	EditorVCSInterface::get_singleton()->create_branch(new_branch_name);
	EditorVCSInterface::get_singleton()->checkout_branch(new_branch_name);

	branch_create_name_input->clear();
	_refresh_branch_list();
}

void VersionControlEditorPlugin::_create_remote() {
	CHECK_PLUGIN_INITIALIZED();

	String new_remote_name = remote_create_name_input->get_text().strip_edges();
	String new_remote_url = remote_create_url_input->get_text().strip_edges();

	EditorVCSInterface::get_singleton()->create_remote(new_remote_name, new_remote_url);

	remote_create_name_input->clear();
	remote_create_url_input->clear();
	_refresh_remote_list();
}

void VersionControlEditorPlugin::_update_branch_create_button(String p_new_text) {
	branch_create_ok->set_disabled(p_new_text.strip_edges().empty());
}

void VersionControlEditorPlugin::_update_remote_create_button(String p_new_text) {
	remote_create_ok->set_disabled(p_new_text.strip_edges().empty());
}

int VersionControlEditorPlugin::_get_item_count(Tree *p_tree) {
	if (!p_tree->get_root()) {
		return 0;
	}

	int count = 0;
	TreeItem *file_entry = p_tree->get_root()->get_children();
	while (file_entry) {
		file_entry = file_entry->get_next();
		count++;
	}

	return count;
}

void VersionControlEditorPlugin::_refresh_stage_area() {
	CHECK_PLUGIN_INITIALIZED();

	staged_files->get_root()->clear_children();
	unstaged_files->get_root()->clear_children();

	List<EditorVCSInterface::StatusFile> status_files = EditorVCSInterface::get_singleton()->get_modified_files_data();
	for (List<EditorVCSInterface::StatusFile>::Element *E = status_files.front(); E; E = E->next()) {
		EditorVCSInterface::StatusFile sf = E->get();
		if (sf.area == EditorVCSInterface::TREE_AREA_STAGED) {
			_add_new_item(staged_files, sf.file_path, sf.change_type);
		} else if (sf.area == EditorVCSInterface::TREE_AREA_UNSTAGED) {
			_add_new_item(unstaged_files, sf.file_path, sf.change_type);
		}
	}

	staged_files->update();
	unstaged_files->update();

	int total_changes = status_files.size();
	String commit_tab_title = TTR("Commit") + (total_changes > 0 ? " (" + itos(total_changes) + ")" : "");
	TabContainer *dock_vbc = Object::cast_to<TabContainer>(version_commit_dock->get_parent_control());
	if (dock_vbc) {
		dock_vbc->set_tab_title(version_commit_dock->get_index(), commit_tab_title);
	}
}

void VersionControlEditorPlugin::_discard_file(String p_file_path, EditorVCSInterface::ChangeType p_change) {
	CHECK_PLUGIN_INITIALIZED();

	if (p_change == EditorVCSInterface::CHANGE_TYPE_NEW) {
		DirAccess *dir = DirAccess::create(DirAccess::ACCESS_RESOURCES);
		dir->remove(p_file_path);
		memdelete(dir);
	} else {
		CHECK_PLUGIN_INITIALIZED();
		EditorVCSInterface::get_singleton()->discard_file(p_file_path);
	}
	// FIXIT: The project.godot file shows weird behaviour
	EditorFileSystem::get_singleton()->update_file(p_file_path);
}

void VersionControlEditorPlugin::_discard_all() {
	TreeItem *root = unstaged_files->get_root();
	if (root) {
		TreeItem *file_entry = root->get_children();
		while (file_entry) {
			String file_path = file_entry->get_meta("file_path");
			EditorVCSInterface::ChangeType change = (EditorVCSInterface::ChangeType)(int)file_entry->get_meta("change_type");
			_discard_file(file_path, change);
			file_entry = file_entry->get_next();
		}
	}
	_refresh_stage_area();
}

void VersionControlEditorPlugin::_add_new_item(Tree *p_tree, String p_file_path, EditorVCSInterface::ChangeType p_change) {
	String change_text = p_file_path + " (" + change_type_to_strings[p_change] + ")";

	TreeItem *new_item = p_tree->create_item(p_tree->get_root());
	new_item->set_text(0, change_text);
	new_item->set_icon(0, change_type_to_icon[p_change]);
	new_item->set_meta("file_path", p_file_path);
	new_item->set_meta("change_type", p_change);
	new_item->set_custom_color(0, change_type_to_color[p_change]);

	new_item->add_button(0, EditorNode::get_singleton()->get_gui_base()->get_icon("Open", "EditorIcons"), BUTTON_TYPE_OPEN, false, "Open");
	if (p_tree == unstaged_files) {
		new_item->add_button(0, EditorNode::get_singleton()->get_gui_base()->get_icon("Undo", "EditorIcons"), BUTTON_TYPE_DISCARD, false, "Discard Changes");
	}
}

void VersionControlEditorPlugin::_fetch() {
	CHECK_PLUGIN_INITIALIZED();

	EditorVCSInterface::get_singleton()->fetch(remote_select->get_selected_metadata());
	_refresh_branch_list();
}

void VersionControlEditorPlugin::_pull() {
	CHECK_PLUGIN_INITIALIZED();

	EditorVCSInterface::get_singleton()->pull(remote_select->get_selected_metadata());
	_refresh_stage_area();
	_refresh_branch_list();
	_refresh_commit_list();
	_clear_diff();
	_update_opened_tabs();
}

void VersionControlEditorPlugin::_push() {
	CHECK_PLUGIN_INITIALIZED();

	EditorVCSInterface::get_singleton()->push(remote_select->get_selected_metadata(), false);
}

void VersionControlEditorPlugin::_force_push() {
	CHECK_PLUGIN_INITIALIZED();

	EditorVCSInterface::get_singleton()->push(remote_select->get_selected_metadata(), true);
}

void VersionControlEditorPlugin::_update_opened_tabs() {
	Vector<EditorData::EditedScene> open_scenes = EditorNode::get_singleton()->get_editor_data().get_edited_scenes();
	for (int i = 0; i < open_scenes.size(); i++) {
		if (open_scenes[i].root == NULL) {
			continue;
		}
		EditorNode::get_singleton()->reload_scene(open_scenes[i].path);
	}
}

void VersionControlEditorPlugin::_move_all(Object *p_tree) {
	Tree *tree = Object::cast_to<Tree>(p_tree);

	TreeItem *root = tree->get_root();
	if (root) {
		TreeItem *file_entry = root->get_children();
		while (file_entry) {
			_move_item(tree, file_entry);
			file_entry = file_entry->get_next();
		}
	}
	_refresh_stage_area();
}

void VersionControlEditorPlugin::_load_diff(Object *p_tree) {
	CHECK_PLUGIN_INITIALIZED();

	version_control_dock_button->set_pressed(true);

	Tree *tree = Object::cast_to<Tree>(p_tree);
	if (tree == staged_files) {
		show_commit_diff_header = false;
		String file_path = tree->get_selected()->get_meta("file_path");
		diff_title->set_text(TTR("Staged Changes"));
		diff_content = EditorVCSInterface::get_singleton()->get_diff(file_path, EditorVCSInterface::TREE_AREA_STAGED);
	} else if (tree == unstaged_files) {
		show_commit_diff_header = false;
		String file_path = tree->get_selected()->get_meta("file_path");
		diff_title->set_text(TTR("Unstaged Changes"));
		diff_content = EditorVCSInterface::get_singleton()->get_diff(file_path, EditorVCSInterface::TREE_AREA_UNSTAGED);
	} else if (tree == commit_list) {
		show_commit_diff_header = true;
		Dictionary meta_data = tree->get_selected()->get_metadata(0);
		String commit_id = meta_data["commit_id"];
		String commit_title = meta_data["commit_title"];
		diff_title->set_text(commit_title);
		diff_content = EditorVCSInterface::get_singleton()->get_diff(commit_id, EditorVCSInterface::TREE_AREA_COMMIT);
	}
	_display_diff(0);
}

void VersionControlEditorPlugin::_clear_diff() {
	diff->clear();
	diff_content.clear();
	diff_title->set_text("");
}

void VersionControlEditorPlugin::_item_activated(Object *p_tree) {
	Tree *tree = Object::cast_to<Tree>(p_tree);

	_move_item(tree, tree->get_selected());
	_refresh_stage_area();
}

void VersionControlEditorPlugin::_move_item(Tree *p_tree, TreeItem *p_item) {
	CHECK_PLUGIN_INITIALIZED();

	if (p_tree == staged_files) {
		EditorVCSInterface::get_singleton()->unstage_file(p_item->get_meta("file_path"));
	} else {
		EditorVCSInterface::get_singleton()->stage_file(p_item->get_meta("file_path"));
	}
}

void VersionControlEditorPlugin::_cell_button_pressed(Object *p_item, int p_column, int p_id) {
	TreeItem *item = Object::cast_to<TreeItem>(p_item);
	String file_path = item->get_meta("file_path");
	EditorVCSInterface::ChangeType change = (EditorVCSInterface::ChangeType)(int)item->get_meta("change_type");

	if (p_id == BUTTON_TYPE_OPEN && change != EditorVCSInterface::CHANGE_TYPE_DELETED) {
		DirAccess *dir = DirAccess::create(DirAccess::ACCESS_RESOURCES);
		if (!dir->file_exists(file_path)) {
			return;
		}
		memdelete(dir);

		file_path = "res://" + file_path;
		if (ResourceLoader::get_resource_type(file_path) == "PackedScene") {
			EditorNode::get_singleton()->open_request(file_path);
		} else if (file_path.ends_with(".gd")) {
			EditorNode::get_singleton()->load_resource(file_path);
			ScriptEditor::get_singleton()->reload_scripts();
		} else {
			EditorNode::get_singleton()->get_filesystem_dock()->navigate_to_path(file_path);
		}

	} else if (p_id == BUTTON_TYPE_DISCARD) {
		_discard_file(file_path, change);
		_refresh_stage_area();
	}
}

void VersionControlEditorPlugin::_display_diff(int p_idx) {
	DiffViewType diff_view = (DiffViewType)diff_view_type_select->get_selected();

	diff->clear();

	if (show_commit_diff_header) {
		Dictionary meta_data = commit_list->get_selected()->get_metadata(0);
		String commit_id = meta_data["commit_id"];
		String commit_subtitle = meta_data["commit_subtitle"];
		String commit_date = meta_data["commit_date"];
		String commit_author = meta_data["commit_author"];
		String commit_date_string = meta_data["commit_date_string"];

		diff->push_font(EditorNode::get_singleton()->get_gui_base()->get_font("doc_bold", "EditorFonts"));
		diff->push_color(EditorNode::get_singleton()->get_gui_base()->get_color("accent_color", "Editor"));
		diff->add_text(TTR("Commit:") + " " + commit_id + "\n");
		diff->add_text(TTR("Author:") + " " + commit_author + "\n");
		diff->add_text(TTR("Date:") + " " + commit_date_string + "\n");
		if (!commit_subtitle.empty()) {
			diff->add_text(TTR("Subtitle:") + " " + commit_subtitle + "\n");
		}
		diff->add_text("\n");
		diff->pop();
		diff->pop();
	}

	for (int i = 0; i < diff_content.size(); i++) {
		EditorVCSInterface::DiffFile diff_file = diff_content[i];

		diff->push_font(EditorNode::get_singleton()->get_gui_base()->get_font("doc_bold", "EditorFonts"));
		diff->push_color(EditorNode::get_singleton()->get_gui_base()->get_color("accent_color", "Editor"));
		diff->add_text(TTR("File:") + " " + diff_file.new_file);
		diff->pop();
		diff->pop();

		for (int j = 0; j < diff_file.diff_hunks.size(); j++) {
			EditorVCSInterface::DiffHunk hunk = diff_file.diff_hunks[j];

			String old_start = String::num_int64(hunk.old_start);
			String new_start = String::num_int64(hunk.new_start);
			String old_lines = String::num_int64(hunk.old_lines);
			String new_lines = String::num_int64(hunk.new_lines);

			diff->push_font(EditorNode::get_singleton()->get_gui_base()->get_font("source", "EditorFonts"));

			diff->push_align(RichTextLabel::ALIGN_CENTER);
			diff->add_text("@@ " + old_start + "," + old_lines + " " + new_start + "," + new_lines + " @@");
			diff->pop();

			switch (diff_view) {
				case DIFF_VIEW_TYPE_SPLIT:
					_display_diff_split_view(hunk.diff_lines);
					break;
				case DIFF_VIEW_TYPE_UNIFIED:
					_display_diff_unified_view(hunk.diff_lines);
					break;
			}
			diff->add_newline();
			diff->add_newline();
			diff->pop();
		}

		diff->add_newline();
	}
}

void VersionControlEditorPlugin::_display_diff_split_view(List<EditorVCSInterface::DiffLine> &p_diff_content) {
	List<EditorVCSInterface::DiffLine> parsed_diff;

	for (int i = 0; i < p_diff_content.size(); i++) {
		EditorVCSInterface::DiffLine diff_line = p_diff_content[i];
		String line = diff_line.content.strip_edges(false, true);

		if (diff_line.new_line_no >= 0 && diff_line.old_line_no >= 0) {
			diff_line.new_text = line;
			diff_line.old_text = line;
			parsed_diff.push_back(diff_line);
		} else if (diff_line.new_line_no == -1) {
			diff_line.new_text = "";
			diff_line.old_text = line;
			parsed_diff.push_back(diff_line);
		} else if (diff_line.old_line_no == -1) {
			int j = parsed_diff.size() - 1;
			while (j >= 0 && parsed_diff[j].new_line_no == -1) {
				j--;
			}

			if (j == parsed_diff.size() - 1) {
				// no lines are modified
				diff_line.new_text = line;
				diff_line.old_text = "";
				parsed_diff.push_back(diff_line);
			} else {
				// lines are modified
				EditorVCSInterface::DiffLine modified_line = parsed_diff[j + 1];
				modified_line.new_text = line;
				modified_line.new_line_no = diff_line.new_line_no;
				parsed_diff[j + 1] = modified_line;
			}
		}
	}

	diff->push_table(6);
	/*
		[cell]Old Line No[/cell]
		[cell]prefix[/cell]
		[cell]Old Code[/cell]

		[cell]New Line No[/cell]
		[cell]prefix[/cell]
		[cell]New Line[/cell]
	*/

	diff->set_table_column_expand(2, true);
	diff->set_table_column_expand(5, true);

	for (int i = 0; i < parsed_diff.size(); i++) {
		EditorVCSInterface::DiffLine diff_line = parsed_diff[i];

		bool has_change = diff_line.status != " ";
		static const Color red = EditorNode::get_singleton()->get_gui_base()->get_color("error_color", "Editor");
		static const Color green = EditorNode::get_singleton()->get_gui_base()->get_color("success_color", "Editor");
		static const Color white = EditorNode::get_singleton()->get_gui_base()->get_color("font_color", "Label") * Color(1, 1, 1, 0.6);

		if (diff_line.old_line_no >= 0) {
			diff->push_cell();
			diff->push_indent(1);
			diff->push_color(has_change ? red : white);
			diff->add_text(String::num_int64(diff_line.old_line_no));
			diff->pop();
			diff->pop();
			diff->pop();

			diff->push_cell();
			diff->push_color(has_change ? red : white);
			diff->add_text(has_change ? "-|" : " |");
			diff->pop();
			diff->pop();

			diff->push_cell();
			diff->push_color(has_change ? red : white);
			diff->add_text(diff_line.old_text);
			diff->pop();
			diff->pop();

		} else {
			diff->push_cell();
			diff->pop();

			diff->push_cell();
			diff->pop();

			diff->push_cell();
			diff->pop();
		}

		if (diff_line.new_line_no >= 0) {
			diff->push_cell();
			diff->push_indent(1);
			diff->push_color(has_change ? green : white);
			diff->add_text(String::num_int64(diff_line.new_line_no));
			diff->pop();
			diff->pop();
			diff->pop();

			diff->push_cell();
			diff->push_color(has_change ? green : white);
			diff->add_text(has_change ? "+|" : " |");
			diff->pop();
			diff->pop();

			diff->push_cell();
			diff->push_color(has_change ? green : white);
			diff->add_text(diff_line.new_text);
			diff->pop();
			diff->pop();
		} else {
			diff->push_cell();
			diff->pop();

			diff->push_cell();
			diff->pop();

			diff->push_cell();
			diff->pop();
		}
	}
	diff->pop();
}

void VersionControlEditorPlugin::_display_diff_unified_view(List<EditorVCSInterface::DiffLine> &p_diff_content) {
	diff->push_table(4);
	diff->set_table_column_expand(3, true);

	/*
		[cell]Old Line No[/cell]
		[cell]New Line No[/cell]
		[cell]status[/cell]
		[cell]code[/cell]
	*/
	for (int i = 0; i < p_diff_content.size(); i++) {
		EditorVCSInterface::DiffLine diff_line = p_diff_content[i];
		String line = diff_line.content.strip_edges(false, true);

		Color color;
		if (diff_line.status == "+") {
			color = EditorNode::get_singleton()->get_gui_base()->get_color("success_color", "Editor");
		} else if (diff_line.status == "-") {
			color = EditorNode::get_singleton()->get_gui_base()->get_color("error_color", "Editor");
		} else {
			color = EditorNode::get_singleton()->get_gui_base()->get_color("font_color", "Label");
			color *= Color(1, 1, 1, 0.6);
		}

		diff->push_cell();
		diff->push_color(color);
		diff->push_indent(1);
		diff->add_text(diff_line.old_line_no >= 0 ? String::num_int64(diff_line.old_line_no) : "");
		diff->pop();
		diff->pop();
		diff->pop();

		diff->push_cell();
		diff->push_color(color);
		diff->push_indent(1);
		diff->add_text(diff_line.new_line_no >= 0 ? String::num_int64(diff_line.new_line_no) : "");
		diff->pop();
		diff->pop();
		diff->pop();

		diff->push_cell();
		diff->push_color(color);
		diff->add_text(diff_line.status != "" ? diff_line.status + "|" : " |");
		diff->pop();
		diff->pop();

		diff->push_cell();
		diff->push_color(color);
		diff->add_text(line);
		diff->pop();
		diff->pop();
	}

	diff->pop(); //table
}

void VersionControlEditorPlugin::_update_commit_button() {
	commit_button->set_disabled(commit_message->get_text().strip_edges().empty());
}

void VersionControlEditorPlugin::_remove_branch() {
	CHECK_PLUGIN_INITIALIZED();

	EditorVCSInterface::get_singleton()->remove_branch(branch_to_remove);
	branch_to_remove.clear();

	_refresh_branch_list();
}

void VersionControlEditorPlugin::_remove_remote() {
	CHECK_PLUGIN_INITIALIZED();

	EditorVCSInterface::get_singleton()->remove_remote(remote_to_remove);
	remote_to_remove.clear();

	_refresh_remote_list();
}

void VersionControlEditorPlugin::_extra_option_selected(int p_index) {
	CHECK_PLUGIN_INITIALIZED();

	switch ((ExtraOption)p_index) {
		case EXTRA_OPTION_FORCE_PUSH:
			_force_push();
			break;
		case EXTRA_OPTION_CREATE_BRANCH:
			branch_create_confirm->popup_centered();
			break;
		case EXTRA_OPTION_CREATE_REMOTE:
			remote_create_confirm->popup_centered();
			break;
	}
}

void VersionControlEditorPlugin::_popup_branch_remove_confirm(int p_index) {
	branch_to_remove = extra_options_remove_branch_list->get_item_text(p_index);

	branch_remove_confirm->set_text(vformat(TTR("Do you want to remove the %s branch?"), branch_to_remove));
	branch_remove_confirm->popup_centered();
}

void VersionControlEditorPlugin::_popup_remote_remove_confirm(int p_index) {
	remote_to_remove = extra_options_remove_remote_list->get_item_text(p_index);

	remote_remove_confirm->set_text(vformat(TTR("Do you want to remove the %s remote?"), branch_to_remove));
	remote_remove_confirm->popup_centered();
}

void VersionControlEditorPlugin::_update_extra_options() {
	extra_options_remove_branch_list->clear();
	for (int i = 0; i < branch_select->get_item_count(); i++) {
		extra_options_remove_branch_list->add_icon_item(EditorNode::get_singleton()->get_gui_base()->get_icon("VcsBranches", "EditorIcons"), branch_select->get_item_text(branch_select->get_item_id(i)));
	}
	extra_options_remove_branch_list->update();

	extra_options_remove_remote_list->clear();
	for (int i = 0; i < remote_select->get_item_count(); i++) {
		extra_options_remove_remote_list->add_icon_item(EditorNode::get_singleton()->get_gui_base()->get_icon("ArrowUp", "EditorIcons"), remote_select->get_item_text(remote_select->get_item_id(i)));
	}
	extra_options_remove_remote_list->update();
}

bool VersionControlEditorPlugin::_is_staging_area_empty() {
	return staged_files->get_last_item() == staged_files->get_root();
}

void VersionControlEditorPlugin::_commit_message_gui_input(const Ref<InputEvent> &p_event) {
	if (!commit_message->has_focus()) {
		return;
	}
	if (commit_message->get_text().strip_edges().empty()) {
		// Do not allow empty commit messages.
		return;
	}
	const Ref<InputEventKey> k = p_event;

	if (k.is_valid() && k->is_pressed()) {
		if (ED_IS_SHORTCUT("version_control/commit", p_event)) {
			if (_is_staging_area_empty()) {
				// Stage all files only when no files were previously staged.
				_move_all(unstaged_files);
			}

			_commit();

			commit_message->accept_event();
		}
	}
}

void VersionControlEditorPlugin::register_editor() {
	EditorNode::get_singleton()->add_control_to_dock(EditorNode::DOCK_SLOT_RIGHT_UL, version_commit_dock);
	TabContainer *dock_vbc = Object::cast_to<TabContainer>(version_commit_dock->get_parent_control());
	dock_vbc->set_tab_title(version_commit_dock->get_index(), TTR("Commit"));

	ToolButton *vc = EditorNode::get_singleton()->add_bottom_panel_item(TTR("Version Control"), version_control_dock);
	set_version_control_tool_button(vc);

	set_up_choice->set_disabled(true);
	set_up_init_button->set_disabled(true);
}

void VersionControlEditorPlugin::fetch_available_vcs_plugin_names() {
	List<StringName> global_classes;
	ScriptServer::get_global_class_list(&global_classes);

	for (int i = 0; i != global_classes.size(); i++) {
		String path = ScriptServer::get_global_class_path(global_classes[i]);
		Ref<Script> script = ResourceLoader::load(path);
		ERR_FAIL_COND(script.is_null());

		if (script->get_instance_base_type() == "EditorVCSInterface") {
			available_plugins.push_back(global_classes[i]);
		}
	}
}

void VersionControlEditorPlugin::shut_down() {
	if (EditorVCSInterface::get_singleton()) {
		if (EditorFileSystem::get_singleton()->is_connected("filesystem_changed", this, "_refresh_stage_area")) {
			EditorFileSystem::get_singleton()->disconnect("filesystem_changed", this, "_refresh_stage_area");
		}
		EditorVCSInterface::get_singleton()->shut_down();
		memdelete(EditorVCSInterface::get_singleton());
		EditorVCSInterface::set_singleton(nullptr);

		EditorNode::get_singleton()->remove_control_from_dock(version_commit_dock);
		EditorNode::get_singleton()->remove_bottom_panel_item(version_control_dock);

		set_up_choice->set_disabled(false);
		set_up_init_button->set_disabled(false);
	}
}

VersionControlEditorPlugin::VersionControlEditorPlugin() {
	singleton = this;

	version_control_actions = memnew(PopupMenu);
	version_control_actions->set_v_size_flags(BoxContainer::SIZE_SHRINK_CENTER);

	set_up_dialog = memnew(AcceptDialog);
	set_up_dialog->set_title(TTR("Set Up Version Control"));
	set_up_dialog->set_custom_minimum_size(Size2(600, 100));
	set_up_dialog->set_hide_on_ok(true);
	version_control_actions->add_child(set_up_dialog);

	Button *set_up_apply_button = set_up_dialog->get_ok();
	set_up_apply_button->set_text(TTR("Apply"));
	set_up_apply_button->connect("pressed", this, "_set_credentials");

	set_up_vbc = memnew(VBoxContainer);
	set_up_vbc->set_alignment(VBoxContainer::ALIGN_CENTER);
	set_up_dialog->add_child(set_up_vbc);

	HBoxContainer *set_up_hbc = memnew(HBoxContainer);
	set_up_hbc->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_vbc->add_child(set_up_hbc);

	Label *set_up_vcs_label = memnew(Label);
	set_up_vcs_label->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_vcs_label->set_text(TTR("Version Control System"));
	set_up_hbc->add_child(set_up_vcs_label);

	set_up_choice = memnew(OptionButton);
	set_up_choice->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_choice->connect("item_selected", this, "_selected_a_vcs");
	set_up_hbc->add_child(set_up_choice);

	set_up_init_button = memnew(Button);
	set_up_init_button->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_init_button->set_text(TTR("Initialize"));
	set_up_init_button->connect("pressed", this, "_initialize_vcs");
	set_up_vbc->add_child(set_up_init_button);

	set_up_vbc->add_child(memnew(HSeparator));

	set_up_settings_vbc = memnew(VBoxContainer);
	set_up_settings_vbc->set_alignment(VBoxContainer::ALIGN_CENTER);
	set_up_vbc->add_child(set_up_settings_vbc);

	Label *remote_login = memnew(Label);
	remote_login->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	remote_login->set_align(Label::ALIGN_CENTER);
	remote_login->set_text(TTR("Remote Login"));
	set_up_settings_vbc->add_child(remote_login);

	HBoxContainer *set_up_username_input = memnew(HBoxContainer);
	set_up_username_input->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_settings_vbc->add_child(set_up_username_input);

	Label *set_up_username_label = memnew(Label);
	set_up_username_label->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_username_label->set_text(TTR("Username"));
	set_up_username_input->add_child(set_up_username_label);

	set_up_username = memnew(LineEdit);
	set_up_username->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_username->set_text(EDITOR_GET("version_control/username"));
	set_up_username->connect("text_changed", this, "_update_set_up_warning");
	set_up_username_input->add_child(set_up_username);

	HBoxContainer *set_up_password_input = memnew(HBoxContainer);
	set_up_password_input->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_settings_vbc->add_child(set_up_password_input);

	Label *set_up_password_label = memnew(Label);
	set_up_password_label->set_text(TTR("Password"));
	set_up_password_label->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_password_input->add_child(set_up_password_label);

	set_up_password = memnew(LineEdit);
	set_up_password->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_password->set_secret(true);
	set_up_password->connect("text_changed", this, "_update_set_up_warning");
	set_up_password_input->add_child(set_up_password);

	HBoxContainer *set_up_ssh_public_key_input = memnew(HBoxContainer);
	set_up_ssh_public_key_input->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_settings_vbc->add_child(set_up_ssh_public_key_input);

	Label *set_up_ssh_public_key_label = memnew(Label);
	set_up_ssh_public_key_label->set_text(TTR("SSH Public Key Path"));
	set_up_ssh_public_key_label->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_ssh_public_key_input->add_child(set_up_ssh_public_key_label);

	HBoxContainer *set_up_ssh_public_key_input_hbc = memnew(HBoxContainer);
	set_up_ssh_public_key_input_hbc->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_ssh_public_key_input->add_child(set_up_ssh_public_key_input_hbc);

	set_up_ssh_public_key_path = memnew(LineEdit);
	set_up_ssh_public_key_path->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_ssh_public_key_path->set_text(EDITOR_GET("version_control/ssh_public_key_path"));
	set_up_ssh_public_key_path->connect("text_changed", this, "_update_set_up_warning");
	set_up_ssh_public_key_input_hbc->add_child(set_up_ssh_public_key_path);

	set_up_ssh_public_key_file_dialog = memnew(FileDialog);
	set_up_ssh_public_key_file_dialog->set_access(FileDialog::ACCESS_FILESYSTEM);
	set_up_ssh_public_key_file_dialog->set_mode(FileDialog::MODE_OPEN_FILE);
	set_up_ssh_public_key_file_dialog->set_show_hidden_files(true);
	// TODO: Make this start at the user's home folder
	DirAccess *d = DirAccess::open(OS::get_singleton()->get_system_dir(OS::SystemDir::SYSTEM_DIR_DOCUMENTS));
	d->change_dir("../");
	set_up_ssh_public_key_file_dialog->set_current_dir(d->get_current_dir());
	set_up_ssh_public_key_file_dialog->connect("file_selected", this, "_ssh_public_key_selected");
	set_up_ssh_public_key_input_hbc->add_child(set_up_ssh_public_key_file_dialog);

	Button *select_public_path_button = memnew(Button);
	select_public_path_button->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("Folder", "EditorIcons"));
	select_public_path_button->connect("pressed", set_up_ssh_public_key_file_dialog, "popup_centered_ratio");
	select_public_path_button->set_tooltip(TTR("Select SSH public key path"));
	set_up_ssh_public_key_input_hbc->add_child(select_public_path_button);

	HBoxContainer *set_up_ssh_private_key_input = memnew(HBoxContainer);
	set_up_ssh_private_key_input->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_settings_vbc->add_child(set_up_ssh_private_key_input);

	Label *set_up_ssh_private_key_label = memnew(Label);
	set_up_ssh_private_key_label->set_text(TTR("SSH Private Key Path"));
	set_up_ssh_private_key_label->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_ssh_private_key_input->add_child(set_up_ssh_private_key_label);

	HBoxContainer *set_up_ssh_private_key_input_hbc = memnew(HBoxContainer);
	set_up_ssh_private_key_input_hbc->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_ssh_private_key_input->add_child(set_up_ssh_private_key_input_hbc);

	set_up_ssh_private_key_path = memnew(LineEdit);
	set_up_ssh_private_key_path->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_ssh_private_key_path->set_text(EDITOR_GET("version_control/ssh_private_key_path"));
	set_up_ssh_private_key_path->connect("text_changed", this, "_update_set_up_warning");
	set_up_ssh_private_key_input_hbc->add_child(set_up_ssh_private_key_path);

	set_up_ssh_private_key_file_dialog = memnew(FileDialog);
	set_up_ssh_private_key_file_dialog->set_access(FileDialog::ACCESS_FILESYSTEM);
	set_up_ssh_private_key_file_dialog->set_mode(FileDialog::MODE_OPEN_FILE);
	set_up_ssh_private_key_file_dialog->set_show_hidden_files(true);
	// TODO: Make this start at the user's home folder
	set_up_ssh_private_key_file_dialog->set_current_dir(d->get_current_dir());
	memdelete(d);
	set_up_ssh_private_key_file_dialog->connect("file_selected", this, "_ssh_private_key_selected");
	set_up_ssh_private_key_input_hbc->add_child(set_up_ssh_private_key_file_dialog);

	Button *select_private_path_button = memnew(Button);
	select_private_path_button->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("Folder", "EditorIcons"));
	select_private_path_button->connect("pressed", set_up_ssh_private_key_file_dialog, "popup_centered_ratio");
	select_private_path_button->set_tooltip(TTR("Select SSH private key path"));
	set_up_ssh_private_key_input_hbc->add_child(select_private_path_button);

	HBoxContainer *set_up_ssh_passphrase_input = memnew(HBoxContainer);
	set_up_ssh_passphrase_input->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_settings_vbc->add_child(set_up_ssh_passphrase_input);

	Label *set_up_ssh_passphrase_label = memnew(Label);
	set_up_ssh_passphrase_label->set_text(TTR("SSH Passphrase"));
	set_up_ssh_passphrase_label->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_ssh_passphrase_input->add_child(set_up_ssh_passphrase_label);

	set_up_ssh_passphrase = memnew(LineEdit);
	set_up_ssh_passphrase->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_ssh_passphrase->set_secret(true);
	set_up_ssh_passphrase->connect("text_changed", this, "_update_set_up_warning");
	set_up_ssh_passphrase_input->add_child(set_up_ssh_passphrase);

	set_up_warning_text = memnew(Label);
	set_up_warning_text->set_align(Label::ALIGN_CENTER);
	set_up_warning_text->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	set_up_settings_vbc->add_child(set_up_warning_text);

	version_control_actions->set_v_size_flags(Control::SIZE_EXPAND_FILL);
	version_control_actions->set_h_size_flags(Control::SIZE_EXPAND_FILL);

	version_commit_dock = memnew(VBoxContainer);
	version_commit_dock->set_visible(false);

	VBoxContainer *unstage_area = memnew(VBoxContainer);
	unstage_area->set_v_size_flags(Control::SIZE_EXPAND_FILL);
	unstage_area->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	version_commit_dock->add_child(unstage_area);

	HBoxContainer *unstage_title = memnew(HBoxContainer);
	unstage_area->add_child(unstage_title);

	Label *unstage_label = memnew(Label);
	unstage_label->set_text(TTR("Unstaged Changes"));
	unstage_label->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	unstage_title->add_child(unstage_label);

	refresh_button = memnew(ToolButton);
	refresh_button->set_tooltip(TTR("Detect new changes"));
	refresh_button->set_flat(true);
	refresh_button->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("Refresh", "EditorIcons"));
	refresh_button->connect("pressed", this, "_refresh_stage_area");
	refresh_button->connect("pressed", this, "_refresh_commit_list");
	refresh_button->connect("pressed", this, "_refresh_branch_list");
	refresh_button->connect("pressed", this, "_refresh_remote_list");
	unstage_title->add_child(refresh_button);

	discard_all_button = memnew(ToolButton);
	discard_all_button->set_tooltip(TTR("Discard all changes"));
	discard_all_button->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("Close", "EditorIcons"));
	discard_all_button->connect("pressed", this, "_discard_all");
	discard_all_button->set_flat(true);
	unstage_title->add_child(discard_all_button);

	stage_all_button = memnew(ToolButton);
	stage_all_button->set_flat(true);
	stage_all_button->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("MoveDown", "EditorIcons"));
	stage_all_button->set_tooltip(TTR("Stage all changes"));
	unstage_title->add_child(stage_all_button);

	unstaged_files = memnew(Tree);
	unstaged_files->set_h_size_flags(Tree::SIZE_EXPAND_FILL);
	unstaged_files->set_v_size_flags(Tree::SIZE_EXPAND_FILL);
	unstaged_files->set_select_mode(Tree::SELECT_ROW);
	unstaged_files->connect("item_selected", this, "_load_diff", varray(unstaged_files));
	unstaged_files->connect("item_activated", this, "_item_activated", varray(unstaged_files));
	unstaged_files->connect("button_pressed", this, "_cell_button_pressed");
	unstaged_files->create_item();
	unstaged_files->set_hide_root(true);
	unstage_area->add_child(unstaged_files);

	VBoxContainer *stage_area = memnew(VBoxContainer);
	stage_area->set_v_size_flags(Control::SIZE_EXPAND_FILL);
	stage_area->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	version_commit_dock->add_child(stage_area);

	HBoxContainer *stage_title = memnew(HBoxContainer);
	stage_area->add_child(stage_title);

	Label *stage_label = memnew(Label);
	stage_label->set_text(TTR("Staged Changes"));
	stage_label->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	stage_title->add_child(stage_label);

	unstage_all_button = memnew(ToolButton);
	unstage_all_button->set_flat(true);
	unstage_all_button->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("MoveUp", "EditorIcons"));
	unstage_all_button->set_tooltip(TTR("Unstage all changes"));
	stage_title->add_child(unstage_all_button);

	staged_files = memnew(Tree);
	staged_files->set_h_size_flags(Tree::SIZE_EXPAND_FILL);
	staged_files->set_v_size_flags(Tree::SIZE_EXPAND_FILL);
	staged_files->set_select_mode(Tree::SELECT_ROW);
	staged_files->connect("item_selected", this, "_load_diff", varray(staged_files));
	staged_files->connect("button_pressed", this, "_cell_button_pressed");
	staged_files->connect("item_activated", this, "_item_activated", varray(staged_files));
	staged_files->create_item();
	staged_files->set_hide_root(true);
	stage_area->add_child(staged_files);

	// Editor crashes if bind is null
	unstage_all_button->connect("pressed", this, "_move_all", varray(staged_files));
	stage_all_button->connect("pressed", this, "_move_all", varray(unstaged_files));

	version_commit_dock->add_child(memnew(HSeparator));

	VBoxContainer *commit_area = memnew(VBoxContainer);
	version_commit_dock->add_child(commit_area);

	Label *commit_label = memnew(Label);
	commit_label->set_text(TTR("Commit Message"));
	commit_label->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	commit_area->add_child(commit_label);

	commit_message = memnew(TextEdit);
	commit_message->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	commit_message->set_h_grow_direction(Control::GrowDirection::GROW_DIRECTION_BEGIN);
	commit_message->set_v_grow_direction(Control::GrowDirection::GROW_DIRECTION_END);
	commit_message->set_custom_minimum_size(Size2(200, 100));
	commit_message->set_wrap_enabled(true);
	commit_message->connect("text_changed", this, "_update_commit_button");
	commit_message->connect("gui_input", this, "_commit_message_gui_input");
	commit_area->add_child(commit_message);

	ED_SHORTCUT("version_control/commit", TTR("Commit"), KEY_MASK_CMD | KEY_ENTER);

	commit_button = memnew(Button);
	commit_button->set_text(TTR("Commit Changes"));
	commit_button->set_disabled(true);
	commit_button->connect("pressed", this, "_commit");
	commit_area->add_child(commit_button);

	version_commit_dock->add_child(memnew(HSeparator));

	HBoxContainer *commit_list_hbc = memnew(HBoxContainer);
	version_commit_dock->add_child(commit_list_hbc);

	Label *commit_list_label = memnew(Label);
	commit_list_label->set_text(TTR("Commit List"));
	commit_list_label->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	commit_list_hbc->add_child(commit_list_label);

	commit_list_size_button = memnew(OptionButton);
	commit_list_size_button->set_tooltip(TTR("Commit list size"));
	commit_list_size_button->add_item("10");
	commit_list_size_button->set_item_metadata(0, 10);
	commit_list_size_button->add_item("20");
	commit_list_size_button->set_item_metadata(1, 20);
	commit_list_size_button->add_item("30");
	commit_list_size_button->set_item_metadata(2, 30);
	commit_list_size_button->connect("item_selected", this, "_set_commit_list_size");
	commit_list_hbc->add_child(commit_list_size_button);

	commit_list = memnew(Tree);
	commit_list->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	commit_list->set_v_grow_direction(Control::GrowDirection::GROW_DIRECTION_END);
	commit_list->set_custom_minimum_size(Size2(200, 160));
	commit_list->create_item();
	commit_list->set_hide_root(true);
	commit_list->set_select_mode(Tree::SELECT_ROW);
	commit_list->set_columns(3); // Commit msg, id, author
	commit_list->set_column_min_width(0, 40);
	commit_list->set_column_min_width(1, 20);
	commit_list->set_column_min_width(2, 20);
	commit_list->connect("item_selected", this, "_load_diff", varray(commit_list));
	version_commit_dock->add_child(commit_list);

	version_commit_dock->add_child(memnew(HSeparator));

	HBoxContainer *menu_bar = memnew(HBoxContainer);
	menu_bar->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	menu_bar->set_v_size_flags(Control::SIZE_FILL);
	version_commit_dock->add_child(menu_bar);

	branch_select = memnew(OptionButton);
	branch_select->set_tooltip(TTR("Branches"));
	branch_select->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	branch_select->connect("item_selected", this, "_branch_item_selected");
	branch_select->connect("pressed", this, "_refresh_branch_list");
	menu_bar->add_child(branch_select);

	branch_create_confirm = memnew(AcceptDialog);
	branch_create_confirm->set_title(TTR("Create New Branch"));
	branch_create_confirm->set_custom_minimum_size(Size2(400, 100));
	branch_create_confirm->set_hide_on_ok(true);
	version_commit_dock->add_child(branch_create_confirm);

	branch_create_ok = branch_create_confirm->get_ok();
	branch_create_ok->set_text(TTR("Create"));
	branch_create_ok->set_disabled(true);
	branch_create_ok->connect("pressed", this, "_create_branch");

	branch_remove_confirm = memnew(AcceptDialog);
	branch_remove_confirm->set_title(TTR("Remove Branch"));
	branch_remove_confirm->add_cancel();
	version_commit_dock->add_child(branch_remove_confirm);

	Button *branch_remove_ok = branch_remove_confirm->get_ok();
	branch_remove_ok->set_text(TTR("Remove"));
	branch_remove_ok->connect("pressed", this, "_remove_branch");

	VBoxContainer *branch_create_vbc = memnew(VBoxContainer);
	branch_create_vbc->set_alignment(VBoxContainer::ALIGN_CENTER);
	branch_create_confirm->add_child(branch_create_vbc);

	HBoxContainer *branch_create_hbc = memnew(HBoxContainer);
	branch_create_hbc->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	branch_create_vbc->add_child(branch_create_hbc);

	Label *branch_create_name_label = memnew(Label);
	branch_create_name_label->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	branch_create_name_label->set_text(TTR("Branch Name"));
	branch_create_hbc->add_child(branch_create_name_label);

	branch_create_name_input = memnew(LineEdit);
	branch_create_name_input->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	branch_create_name_input->connect("text_changed", this, "_update_branch_create_button");
	branch_create_hbc->add_child(branch_create_name_input);

	remote_select = memnew(OptionButton);
	remote_select->set_tooltip(TTR("Remotes"));
	remote_select->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	remote_select->connect("item_selected", this, "_remote_selected");
	remote_select->connect("pressed", this, "_refresh_remote_list");
	menu_bar->add_child(remote_select);

	remote_create_confirm = memnew(AcceptDialog);
	remote_create_confirm->set_title(TTR("Create New Remote"));
	remote_create_confirm->set_custom_minimum_size(Size2(400, 100));
	remote_create_confirm->set_hide_on_ok(true);
	version_commit_dock->add_child(remote_create_confirm);

	remote_create_ok = remote_create_confirm->get_ok();
	remote_create_ok->set_text(TTR("Create"));
	remote_create_ok->set_disabled(true);
	remote_create_ok->connect("pressed", this, "_create_remote");

	remote_remove_confirm = memnew(AcceptDialog);
	remote_remove_confirm->set_title(TTR("Remove Remote"));
	remote_remove_confirm->add_cancel();
	version_commit_dock->add_child(remote_remove_confirm);

	Button *remote_remove_ok = remote_remove_confirm->get_ok();
	remote_remove_ok->set_text(TTR("Remove"));
	remote_remove_ok->connect("pressed", this, "_remove_remote");

	VBoxContainer *remote_create_vbc = memnew(VBoxContainer);
	remote_create_vbc->set_alignment(VBoxContainer::ALIGN_CENTER);
	remote_create_confirm->add_child(remote_create_vbc);

	HBoxContainer *remote_create_name_hbc = memnew(HBoxContainer);
	remote_create_name_hbc->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	remote_create_vbc->add_child(remote_create_name_hbc);

	Label *remote_create_name_label = memnew(Label);
	remote_create_name_label->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	remote_create_name_label->set_text(TTR("Remote Name"));
	remote_create_name_hbc->add_child(remote_create_name_label);

	remote_create_name_input = memnew(LineEdit);
	remote_create_name_input->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	remote_create_name_input->connect("text_changed", this, "_update_remote_create_button");
	remote_create_name_hbc->add_child(remote_create_name_input);

	HBoxContainer *remote_create_hbc = memnew(HBoxContainer);
	remote_create_hbc->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	remote_create_vbc->add_child(remote_create_hbc);

	Label *remote_create_url_label = memnew(Label);
	remote_create_url_label->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	remote_create_url_label->set_text(TTR("Remote URL"));
	remote_create_hbc->add_child(remote_create_url_label);

	remote_create_url_input = memnew(LineEdit);
	remote_create_url_input->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	remote_create_url_input->connect("text_changed", this, "_update_remote_create_button");
	remote_create_hbc->add_child(remote_create_url_input);

	fetch_button = memnew(ToolButton);
	fetch_button->set_tooltip(TTR("Fetch"));
	fetch_button->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("Refresh", "EditorIcons"));
	fetch_button->connect("pressed", this, "_fetch");
	menu_bar->add_child(fetch_button);

	pull_button = memnew(ToolButton);
	pull_button->set_tooltip(TTR("Pull"));
	pull_button->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("MoveDown", "EditorIcons"));
	pull_button->connect("pressed", this, "_pull");
	menu_bar->add_child(pull_button);

	push_button = memnew(ToolButton);
	push_button->set_tooltip(TTR("Push"));
	push_button->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("MoveUp", "EditorIcons"));
	push_button->connect("pressed", this, "_push");
	menu_bar->add_child(push_button);

	extra_options = memnew(MenuButton);
	extra_options->set_icon(EditorNode::get_singleton()->get_gui_base()->get_icon("GuiTabMenuHl", "EditorIcons"));
	extra_options->get_popup()->connect("about_to_show", this, "_update_extra_options");
	extra_options->get_popup()->connect("id_pressed", this, "_extra_option_selected");
	menu_bar->add_child(extra_options);

	extra_options->get_popup()->add_item(TTR("Force Push"), EXTRA_OPTION_FORCE_PUSH);
	extra_options->get_popup()->add_separator();
	extra_options->get_popup()->add_item(TTR("Create New Branch"), EXTRA_OPTION_CREATE_BRANCH);

	extra_options_remove_branch_list = memnew(PopupMenu);
	extra_options_remove_branch_list->connect("id_pressed", this, "_popup_branch_remove_confirm");
	extra_options_remove_branch_list->set_name("Remove Branch");
	extra_options->get_popup()->add_child(extra_options_remove_branch_list);
	extra_options->get_popup()->add_submenu_item(TTR("Remove Branch"), "Remove Branch");

	extra_options->get_popup()->add_separator();
	extra_options->get_popup()->add_item(TTR("Create New Remote"), EXTRA_OPTION_CREATE_REMOTE);

	extra_options_remove_remote_list = memnew(PopupMenu);
	extra_options_remove_remote_list->connect("id_pressed", this, "_popup_remote_remove_confirm");
	extra_options_remove_remote_list->set_name("Remove Remote");
	extra_options->get_popup()->add_child(extra_options_remove_remote_list);
	extra_options->get_popup()->add_submenu_item(TTR("Remove Remote"), "Remove Remote");

	change_type_to_strings[EditorVCSInterface::CHANGE_TYPE_NEW] = TTR("New");
	change_type_to_strings[EditorVCSInterface::CHANGE_TYPE_MODIFIED] = TTR("Modified");
	change_type_to_strings[EditorVCSInterface::CHANGE_TYPE_RENAMED] = TTR("Renamed");
	change_type_to_strings[EditorVCSInterface::CHANGE_TYPE_DELETED] = TTR("Deleted");
	change_type_to_strings[EditorVCSInterface::CHANGE_TYPE_TYPECHANGE] = TTR("Typechange");
	change_type_to_strings[EditorVCSInterface::CHANGE_TYPE_UNMERGED] = TTR("Unmerged");

	change_type_to_color[EditorVCSInterface::CHANGE_TYPE_NEW] = EditorNode::get_singleton()->get_gui_base()->get_color("success_color", "Editor");
	change_type_to_color[EditorVCSInterface::CHANGE_TYPE_MODIFIED] = EditorNode::get_singleton()->get_gui_base()->get_color("warning_color", "Editor");
	change_type_to_color[EditorVCSInterface::CHANGE_TYPE_RENAMED] = EditorNode::get_singleton()->get_gui_base()->get_color("warning_color", "Editor");
	change_type_to_color[EditorVCSInterface::CHANGE_TYPE_DELETED] = EditorNode::get_singleton()->get_gui_base()->get_color("error_color", "Editor");
	change_type_to_color[EditorVCSInterface::CHANGE_TYPE_TYPECHANGE] = EditorNode::get_singleton()->get_gui_base()->get_color("font_color", "Editor");
	change_type_to_color[EditorVCSInterface::CHANGE_TYPE_UNMERGED] = EditorNode::get_singleton()->get_gui_base()->get_color("warning_color", "Editor");

	change_type_to_icon[EditorVCSInterface::CHANGE_TYPE_NEW] = EditorNode::get_singleton()->get_gui_base()->get_icon("StatusSuccess", "EditorIcons");
	change_type_to_icon[EditorVCSInterface::CHANGE_TYPE_MODIFIED] = EditorNode::get_singleton()->get_gui_base()->get_icon("StatusWarning", "EditorIcons");
	change_type_to_icon[EditorVCSInterface::CHANGE_TYPE_RENAMED] = EditorNode::get_singleton()->get_gui_base()->get_icon("StatusWarning", "EditorIcons");
	change_type_to_icon[EditorVCSInterface::CHANGE_TYPE_TYPECHANGE] = EditorNode::get_singleton()->get_gui_base()->get_icon("StatusWarning", "EditorIcons");
	change_type_to_icon[EditorVCSInterface::CHANGE_TYPE_DELETED] = EditorNode::get_singleton()->get_gui_base()->get_icon("StatusError", "EditorIcons");
	change_type_to_icon[EditorVCSInterface::CHANGE_TYPE_UNMERGED] = EditorNode::get_singleton()->get_gui_base()->get_icon("StatusWarning", "EditorIcons");

	version_control_dock = memnew(VBoxContainer);
	version_control_dock->set_v_size_flags(Control::SIZE_EXPAND_FILL);
	version_control_dock->set_custom_minimum_size(Size2(0, 300) * EDSCALE);
	version_control_dock->hide();

	HBoxContainer *diff_heading = memnew(HBoxContainer);
	diff_heading->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	version_control_dock->add_child(diff_heading);

	diff_title = memnew(Label);
	diff_title->set_h_size_flags(Control::SIZE_EXPAND_FILL);
	diff_heading->add_child(diff_title);

	Label *view = memnew(Label);
	view->set_text(TTR("View:"));
	diff_heading->add_child(view);

	diff_view_type_select = memnew(OptionButton);
	diff_view_type_select->add_item(TTR("Split"), DIFF_VIEW_TYPE_SPLIT);
	diff_view_type_select->add_item(TTR("Unified"), DIFF_VIEW_TYPE_UNIFIED);
	diff_view_type_select->connect("item_selected", this, "_display_diff");
	diff_heading->add_child(diff_view_type_select);

	diff = memnew(RichTextLabel);
	diff->set_h_size_flags(TextEdit::SIZE_EXPAND_FILL);
	diff->set_v_size_flags(TextEdit::SIZE_EXPAND_FILL);
	diff->set_selection_enabled(true);
	version_control_dock->add_child(diff);

	_update_set_up_warning("");
}

VersionControlEditorPlugin::~VersionControlEditorPlugin() {
	shut_down();
	memdelete(version_control_dock);
	memdelete(version_commit_dock);
	memdelete(version_control_actions);
}