package net.minecraft.client.gui.screens;

import net.fabricmc.api.EnvType;
import net.fabricmc.api.Environment;
import net.minecraft.ChatFormatting;
import net.minecraft.client.gui.GuiGraphics;
import net.minecraft.client.gui.components.Button;
import net.minecraft.client.gui.components.CycleButton;
import net.minecraft.client.gui.components.EditBox;
import net.minecraft.client.gui.components.Tooltip;
import net.minecraft.client.server.IntegratedServer;
import net.minecraft.network.chat.CommonComponents;
import net.minecraft.network.chat.Component;
import net.minecraft.server.commands.PublishCommand;
import net.minecraft.util.HttpUtil;
import net.minecraft.world.level.GameType;
import org.jetbrains.annotations.Nullable;

@Environment(EnvType.CLIENT)
public class ShareToLanScreen extends Screen {
	private static final int PORT_LOWER_BOUND = 1024;
	private static final int PORT_HIGHER_BOUND = 65535;
	private static final Component ALLOW_COMMANDS_LABEL = Component.translatable("selectWorld.allowCommands");
	private static final Component GAME_MODE_LABEL = Component.translatable("selectWorld.gameMode");
	private static final Component INFO_TEXT = Component.translatable("lanServer.otherPlayers");
	private static final Component PORT_INFO_TEXT = Component.translatable("lanServer.port");
	private static final Component PORT_UNAVAILABLE = Component.translatable("lanServer.port.unavailable", 1024, 65535);
	private static final Component INVALID_PORT = Component.translatable("lanServer.port.invalid", 1024, 65535);
	private static final int INVALID_PORT_COLOR = 16733525;
	private final Screen lastScreen;
	private GameType gameMode = GameType.SURVIVAL;
	private boolean commands;
	private int port = HttpUtil.getAvailablePort();
	@Nullable
	private EditBox portEdit;

	public ShareToLanScreen(Screen lastScreen) {
		super(Component.translatable("lanServer.title"));
		this.lastScreen = lastScreen;
	}

	@Override
	protected void init() {
		IntegratedServer integratedServer = this.minecraft.getSingleplayerServer();
		this.gameMode = integratedServer.getDefaultGameType();
		this.commands = integratedServer.getWorldData().isAllowCommands();
		this.addRenderableWidget(
			CycleButton.<GameType>builder(GameType::getShortDisplayName)
				.withValues(GameType.SURVIVAL, GameType.SPECTATOR, GameType.CREATIVE, GameType.ADVENTURE)
				.withInitialValue(this.gameMode)
				.create(this.width / 2 - 155, 100, 150, 20, GAME_MODE_LABEL, (cycleButton, gameType) -> this.gameMode = gameType)
		);
		this.addRenderableWidget(
			CycleButton.onOffBuilder(this.commands).create(this.width / 2 + 5, 100, 150, 20, ALLOW_COMMANDS_LABEL, (cycleButton, boolean_) -> this.commands = boolean_)
		);
		Button button = Button.builder(Component.translatable("lanServer.start"), buttonx -> {
			this.minecraft.setScreen(null);
			Component component;
			if (integratedServer.publishServer(this.gameMode, this.commands, this.port)) {
				component = PublishCommand.getSuccessMessage(this.port);
			} else {
				component = Component.translatable("commands.publish.failed");
			}

			this.minecraft.gui.getChat().addMessage(component);
			this.minecraft.updateTitle();
		}).bounds(this.width / 2 - 155, this.height - 28, 150, 20).build();
		this.portEdit = new EditBox(this.font, this.width / 2 - 75, 160, 150, 20, Component.translatable("lanServer.port"));
		this.portEdit.setResponder(string -> {
			Component component = this.tryParsePort(string);
			this.portEdit.setHint(Component.literal(this.port + "").withStyle(ChatFormatting.DARK_GRAY));
			if (component == null) {
				this.portEdit.setTextColor(14737632);
				this.portEdit.setTooltip(null);
				button.active = true;
			} else {
				this.portEdit.setTextColor(16733525);
				this.portEdit.setTooltip(Tooltip.create(component));
				button.active = false;
			}
		});
		this.portEdit.setHint(Component.literal(this.port + "").withStyle(ChatFormatting.DARK_GRAY));
		this.addRenderableWidget(this.portEdit);
		this.addRenderableWidget(button);
		this.addRenderableWidget(Button.builder(CommonComponents.GUI_CANCEL, buttonx -> this.onClose()).bounds(this.width / 2 + 5, this.height - 28, 150, 20).build());
	}

	@Override
	public void onClose() {
		this.minecraft.setScreen(this.lastScreen);
	}

	@Nullable
	private Component tryParsePort(String port) {
		if (port.isBlank()) {
			this.port = HttpUtil.getAvailablePort();
			return null;
		} else {
			try {
				this.port = Integer.parseInt(port);
				if (this.port < 1024 || this.port > 65535) {
					return INVALID_PORT;
				} else {
					return !HttpUtil.isPortAvailable(this.port) ? PORT_UNAVAILABLE : null;
				}
			} catch (NumberFormatException var3) {
				this.port = HttpUtil.getAvailablePort();
				return INVALID_PORT;
			}
		}
	}

	@Override
	public void render(GuiGraphics guiGraphics, int mouseX, int mouseY, float partialTick) {
		super.render(guiGraphics, mouseX, mouseY, partialTick);
		guiGraphics.drawCenteredString(this.font, this.title, this.width / 2, 50, 16777215);
		guiGraphics.drawCenteredString(this.font, INFO_TEXT, this.width / 2, 82, 16777215);
		guiGraphics.drawCenteredString(this.font, PORT_INFO_TEXT, this.width / 2, 142, 16777215);
	}
}