/**************************************************************************/
/*  editor_network_profiler.cpp                                           */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
/*                                                                        */
/* 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      */
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/**************************************************************************/

#include "editor_network_profiler.h"

#include "core/os/os.h"
#include "editor/editor_settings.h"
#include "editor/editor_string_names.h"
#include "editor/themes/editor_scale.h"

void EditorNetworkProfiler::_bind_methods() {
	ADD_SIGNAL(MethodInfo("enable_profiling", PropertyInfo(Variant::BOOL, "enable")));
	ADD_SIGNAL(MethodInfo("open_request", PropertyInfo(Variant::STRING, "path")));
}

void EditorNetworkProfiler::_notification(int p_what) {
	switch (p_what) {
		case NOTIFICATION_THEME_CHANGED: {
			if (activate->is_pressed()) {
				activate->set_icon(theme_cache.stop_icon);
			} else {
				activate->set_icon(theme_cache.play_icon);
			}
			clear_button->set_icon(theme_cache.clear_icon);

			incoming_bandwidth_text->set_right_icon(theme_cache.incoming_bandwidth_icon);
			outgoing_bandwidth_text->set_right_icon(theme_cache.outgoing_bandwidth_icon);

			// This needs to be done here to set the faded color when the profiler is first opened
			incoming_bandwidth_text->add_theme_color_override("font_uneditable_color", theme_cache.incoming_bandwidth_color * Color(1, 1, 1, 0.5));
			outgoing_bandwidth_text->add_theme_color_override("font_uneditable_color", theme_cache.outgoing_bandwidth_color * Color(1, 1, 1, 0.5));
		} break;
	}
}

void EditorNetworkProfiler::_update_theme_item_cache() {
	VBoxContainer::_update_theme_item_cache();

	theme_cache.node_icon = get_theme_icon(SNAME("Node"), EditorStringName(EditorIcons));
	theme_cache.stop_icon = get_theme_icon(SNAME("Stop"), EditorStringName(EditorIcons));
	theme_cache.play_icon = get_theme_icon(SNAME("Play"), EditorStringName(EditorIcons));
	theme_cache.clear_icon = get_theme_icon(SNAME("Clear"), EditorStringName(EditorIcons));

	theme_cache.multiplayer_synchronizer_icon = get_theme_icon("MultiplayerSynchronizer", EditorStringName(EditorIcons));
	theme_cache.instance_options_icon = get_theme_icon(SNAME("InstanceOptions"), EditorStringName(EditorIcons));

	theme_cache.incoming_bandwidth_icon = get_theme_icon(SNAME("ArrowDown"), EditorStringName(EditorIcons));
	theme_cache.outgoing_bandwidth_icon = get_theme_icon(SNAME("ArrowUp"), EditorStringName(EditorIcons));

	theme_cache.incoming_bandwidth_color = get_theme_color(SNAME("font_color"), EditorStringName(Editor));
	theme_cache.outgoing_bandwidth_color = get_theme_color(SNAME("font_color"), EditorStringName(Editor));
}

void EditorNetworkProfiler::_refresh() {
	if (!dirty) {
		return;
	}
	dirty = false;
	refresh_rpc_data();
	refresh_replication_data();
}

void EditorNetworkProfiler::refresh_rpc_data() {
	counters_display->clear();

	TreeItem *root = counters_display->create_item();
	int cols = counters_display->get_columns();

	for (const KeyValue<ObjectID, RPCNodeInfo> &E : rpc_data) {
		TreeItem *node = counters_display->create_item(root);

		for (int j = 0; j < cols; ++j) {
			node->set_text_alignment(j, j > 0 ? HORIZONTAL_ALIGNMENT_RIGHT : HORIZONTAL_ALIGNMENT_LEFT);
		}

		node->set_text(0, E.value.node_path);
		node->set_text(1, E.value.incoming_rpc == 0 ? "-" : vformat(TTR("%d (%s)"), E.value.incoming_rpc, String::humanize_size(E.value.incoming_size)));
		node->set_text(2, E.value.outgoing_rpc == 0 ? "-" : vformat(TTR("%d (%s)"), E.value.outgoing_rpc, String::humanize_size(E.value.outgoing_size)));
	}
}

void EditorNetworkProfiler::refresh_replication_data() {
	replication_display->clear();

	TreeItem *root = replication_display->create_item();

	for (const KeyValue<ObjectID, SyncInfo> &E : sync_data) {
		// Ensure the nodes have at least a temporary cache.
		ObjectID ids[3] = { E.value.synchronizer, E.value.config, E.value.root_node };
		for (uint32_t i = 0; i < 3; i++) {
			const ObjectID &id = ids[i];
			if (!node_data.has(id)) {
				missing_node_data.insert(id);
				node_data[id] = NodeInfo(id);
			}
		}

		TreeItem *node = replication_display->create_item(root);

		const NodeInfo &root_info = node_data[E.value.root_node];
		const NodeInfo &sync_info = node_data[E.value.synchronizer];
		const NodeInfo &cfg_info = node_data[E.value.config];

		node->set_text(0, root_info.path.get_file());
		node->set_icon(0, has_theme_icon(root_info.type, EditorStringName(EditorIcons)) ? get_theme_icon(root_info.type, EditorStringName(EditorIcons)) : theme_cache.node_icon);
		node->set_tooltip_text(0, root_info.path);

		node->set_text(1, sync_info.path.get_file());
		node->set_icon(1, theme_cache.multiplayer_synchronizer_icon);
		node->set_tooltip_text(1, sync_info.path);

		int cfg_idx = cfg_info.path.find("::");
		if (cfg_info.path.begins_with("res://") && ResourceLoader::exists(cfg_info.path) && cfg_idx > 0) {
			String res_idstr = cfg_info.path.substr(cfg_idx + 2).replace("SceneReplicationConfig_", "");
			String scene_path = cfg_info.path.substr(0, cfg_idx);
			node->set_text(2, vformat("%s (%s)", res_idstr, scene_path.get_file()));
			node->add_button(2, theme_cache.instance_options_icon);
			node->set_tooltip_text(2, cfg_info.path);
			node->set_metadata(2, scene_path);
		} else {
			node->set_text(2, cfg_info.path);
			node->set_metadata(2, "");
		}

		node->set_text(3, vformat("%d - %d", E.value.incoming_syncs, E.value.outgoing_syncs));
		node->set_text(4, vformat("%d - %d", E.value.incoming_size, E.value.outgoing_size));
	}
}

Array EditorNetworkProfiler::pop_missing_node_data() {
	Array out;
	for (const ObjectID &id : missing_node_data) {
		out.push_back(id);
	}
	missing_node_data.clear();
	return out;
}

void EditorNetworkProfiler::add_node_data(const NodeInfo &p_info) {
	ERR_FAIL_COND(!node_data.has(p_info.id));
	node_data[p_info.id] = p_info;
	dirty = true;
}

void EditorNetworkProfiler::_activate_pressed() {
	if (activate->is_pressed()) {
		refresh_timer->start();
		activate->set_icon(theme_cache.stop_icon);
		activate->set_text(TTR("Stop"));
	} else {
		refresh_timer->stop();
		activate->set_icon(theme_cache.play_icon);
		activate->set_text(TTR("Start"));
	}
	emit_signal(SNAME("enable_profiling"), activate->is_pressed());
}

void EditorNetworkProfiler::_clear_pressed() {
	rpc_data.clear();
	sync_data.clear();
	node_data.clear();
	missing_node_data.clear();
	set_bandwidth(0, 0);
	refresh_rpc_data();
	refresh_replication_data();
}

void EditorNetworkProfiler::_replication_button_clicked(TreeItem *p_item, int p_column, int p_idx, MouseButton p_button) {
	if (!p_item) {
		return;
	}
	String meta = p_item->get_metadata(p_column);
	if (meta.size() && ResourceLoader::exists(meta)) {
		emit_signal("open_request", meta);
	}
}

void EditorNetworkProfiler::add_rpc_frame_data(const RPCNodeInfo &p_frame) {
	dirty = true;
	if (!rpc_data.has(p_frame.node)) {
		rpc_data.insert(p_frame.node, p_frame);
	} else {
		rpc_data[p_frame.node].incoming_rpc += p_frame.incoming_rpc;
		rpc_data[p_frame.node].outgoing_rpc += p_frame.outgoing_rpc;
	}
	if (p_frame.incoming_rpc) {
		rpc_data[p_frame.node].incoming_size = p_frame.incoming_size / p_frame.incoming_rpc;
	}
	if (p_frame.outgoing_rpc) {
		rpc_data[p_frame.node].outgoing_size = p_frame.outgoing_size / p_frame.outgoing_rpc;
	}
}

void EditorNetworkProfiler::add_sync_frame_data(const SyncInfo &p_frame) {
	dirty = true;
	if (!sync_data.has(p_frame.synchronizer)) {
		sync_data[p_frame.synchronizer] = p_frame;
	} else {
		sync_data[p_frame.synchronizer].incoming_syncs += p_frame.incoming_syncs;
		sync_data[p_frame.synchronizer].outgoing_syncs += p_frame.outgoing_syncs;
	}
	SyncInfo &info = sync_data[p_frame.synchronizer];
	if (info.incoming_syncs) {
		info.incoming_size = p_frame.incoming_size / p_frame.incoming_syncs;
	}
	if (info.outgoing_syncs) {
		info.outgoing_size = p_frame.outgoing_size / p_frame.outgoing_syncs;
	}
}

void EditorNetworkProfiler::set_bandwidth(int p_incoming, int p_outgoing) {
	incoming_bandwidth_text->set_text(vformat(TTR("%s/s"), String::humanize_size(p_incoming)));
	outgoing_bandwidth_text->set_text(vformat(TTR("%s/s"), String::humanize_size(p_outgoing)));

	// Make labels more prominent when the bandwidth is greater than 0 to attract user attention
	incoming_bandwidth_text->add_theme_color_override(
			"font_uneditable_color",
			theme_cache.incoming_bandwidth_color * Color(1, 1, 1, p_incoming > 0 ? 1 : 0.5));
	outgoing_bandwidth_text->add_theme_color_override(
			"font_uneditable_color",
			theme_cache.outgoing_bandwidth_color * Color(1, 1, 1, p_outgoing > 0 ? 1 : 0.5));
}

bool EditorNetworkProfiler::is_profiling() {
	return activate->is_pressed();
}

EditorNetworkProfiler::EditorNetworkProfiler() {
	HBoxContainer *hb = memnew(HBoxContainer);
	hb->add_theme_constant_override("separation", 8 * EDSCALE);
	add_child(hb);

	activate = memnew(Button);
	activate->set_toggle_mode(true);
	activate->set_text(TTR("Start"));
	activate->connect(SceneStringName(pressed), callable_mp(this, &EditorNetworkProfiler::_activate_pressed));
	hb->add_child(activate);

	clear_button = memnew(Button);
	clear_button->set_text(TTR("Clear"));
	clear_button->connect(SceneStringName(pressed), callable_mp(this, &EditorNetworkProfiler::_clear_pressed));
	hb->add_child(clear_button);

	hb->add_spacer();

	Label *lb = memnew(Label);
	// TRANSLATORS: This is the label for the network profiler's incoming bandwidth.
	lb->set_text(TTR("Down", "Network"));
	hb->add_child(lb);

	incoming_bandwidth_text = memnew(LineEdit);
	incoming_bandwidth_text->set_editable(false);
	incoming_bandwidth_text->set_custom_minimum_size(Size2(120, 0) * EDSCALE);
	incoming_bandwidth_text->set_horizontal_alignment(HORIZONTAL_ALIGNMENT_RIGHT);
	hb->add_child(incoming_bandwidth_text);

	Control *down_up_spacer = memnew(Control);
	down_up_spacer->set_custom_minimum_size(Size2(30, 0) * EDSCALE);
	hb->add_child(down_up_spacer);

	lb = memnew(Label);
	// TRANSLATORS: This is the label for the network profiler's outgoing bandwidth.
	lb->set_text(TTR("Up", "Network"));
	hb->add_child(lb);

	outgoing_bandwidth_text = memnew(LineEdit);
	outgoing_bandwidth_text->set_editable(false);
	outgoing_bandwidth_text->set_custom_minimum_size(Size2(120, 0) * EDSCALE);
	outgoing_bandwidth_text->set_horizontal_alignment(HORIZONTAL_ALIGNMENT_RIGHT);
	hb->add_child(outgoing_bandwidth_text);

	// Set initial texts in the incoming/outgoing bandwidth labels
	set_bandwidth(0, 0);

	HSplitContainer *sc = memnew(HSplitContainer);
	add_child(sc);
	sc->set_v_size_flags(SIZE_EXPAND_FILL);
	sc->set_h_size_flags(SIZE_EXPAND_FILL);
	sc->set_split_offset(100 * EDSCALE);

	// RPC
	counters_display = memnew(Tree);
	counters_display->set_custom_minimum_size(Size2(320, 0) * EDSCALE);
	counters_display->set_v_size_flags(SIZE_EXPAND_FILL);
	counters_display->set_h_size_flags(SIZE_EXPAND_FILL);
	counters_display->set_hide_folding(true);
	counters_display->set_hide_root(true);
	counters_display->set_columns(3);
	counters_display->set_column_titles_visible(true);
	counters_display->set_column_title(0, TTR("Node"));
	counters_display->set_column_expand(0, true);
	counters_display->set_column_clip_content(0, true);
	counters_display->set_column_custom_minimum_width(0, 60 * EDSCALE);
	counters_display->set_column_title(1, TTR("Incoming RPC"));
	counters_display->set_column_expand(1, false);
	counters_display->set_column_clip_content(1, true);
	counters_display->set_column_custom_minimum_width(1, 120 * EDSCALE);
	counters_display->set_column_title(2, TTR("Outgoing RPC"));
	counters_display->set_column_expand(2, false);
	counters_display->set_column_clip_content(2, true);
	counters_display->set_column_custom_minimum_width(2, 120 * EDSCALE);
	sc->add_child(counters_display);

	// Replication
	replication_display = memnew(Tree);
	replication_display->set_custom_minimum_size(Size2(320, 0) * EDSCALE);
	replication_display->set_v_size_flags(SIZE_EXPAND_FILL);
	replication_display->set_h_size_flags(SIZE_EXPAND_FILL);
	replication_display->set_hide_folding(true);
	replication_display->set_hide_root(true);
	replication_display->set_columns(5);
	replication_display->set_column_titles_visible(true);
	replication_display->set_column_title(0, TTR("Root"));
	replication_display->set_column_expand(0, true);
	replication_display->set_column_clip_content(0, true);
	replication_display->set_column_custom_minimum_width(0, 80 * EDSCALE);
	replication_display->set_column_title(1, TTR("Synchronizer"));
	replication_display->set_column_expand(1, true);
	replication_display->set_column_clip_content(1, true);
	replication_display->set_column_custom_minimum_width(1, 80 * EDSCALE);
	replication_display->set_column_title(2, TTR("Config"));
	replication_display->set_column_expand(2, true);
	replication_display->set_column_clip_content(2, true);
	replication_display->set_column_custom_minimum_width(2, 80 * EDSCALE);
	replication_display->set_column_title(3, TTR("Count"));
	replication_display->set_column_expand(3, false);
	replication_display->set_column_clip_content(3, true);
	replication_display->set_column_custom_minimum_width(3, 80 * EDSCALE);
	replication_display->set_column_title(4, TTR("Size"));
	replication_display->set_column_expand(4, false);
	replication_display->set_column_clip_content(4, true);
	replication_display->set_column_custom_minimum_width(4, 80 * EDSCALE);
	replication_display->connect("button_clicked", callable_mp(this, &EditorNetworkProfiler::_replication_button_clicked));
	sc->add_child(replication_display);

	refresh_timer = memnew(Timer);
	refresh_timer->set_wait_time(0.5);
	refresh_timer->connect("timeout", callable_mp(this, &EditorNetworkProfiler::_refresh));
	add_child(refresh_timer);
}