package net.minecraft.client.gui.screens.friends;

import java.util.List;
import java.util.function.Consumer;
import net.minecraft.ChatFormatting;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.components.AbstractWidget;
import net.minecraft.client.gui.components.FocusableTextWidget;
import net.minecraft.client.gui.components.ImageWidget;
import net.minecraft.client.gui.components.LoadingDotsWidget;
import net.minecraft.client.gui.components.ScrollableLayout;
import net.minecraft.client.gui.layouts.FrameLayout;
import net.minecraft.client.gui.layouts.Layout;
import net.minecraft.client.gui.layouts.LinearLayout;
import net.minecraft.client.gui.navigation.ScreenRectangle;
import net.minecraft.client.gui.screens.PrivacyConfirmLinkScreen;
import net.minecraft.client.gui.screens.social.PlayerSocialManager;
import net.minecraft.network.chat.Component;
import net.minecraft.network.chat.ClickEvent.OpenUrl;
import net.minecraft.resources.Identifier;
import net.minecraft.util.CommonLinks;

class FriendsTab extends AbstractFriendsTab {
	private static final Component TAB_TITLE = Component.translatable("gui.friends.tab_friends");
	private static final Component MICROSOFT_ACCOUNT_LINK = Component.translatable("gui.friends.empty_state.link")
		.withStyle(style -> style.withUnderlined(true).withColor(ChatFormatting.GRAY).withClickEvent(new OpenUrl(CommonLinks.PRIVACY_AND_ONLINE_SETTINGS)));
	private static final Component EMPTY_STATE = Component.translatable("gui.friends.empty_state", new Object[]{MICROSOFT_ACCOUNT_LINK})
		.withStyle(ChatFormatting.GRAY);
	private static final Component MANAGE_ACCOUNT_FOOTER = Component.translatable("gui.friends.manage_account_footer", new Object[]{MICROSOFT_ACCOUNT_LINK})
		.withStyle(ChatFormatting.GRAY);
	private static final Identifier ILLUSTRATION = Identifier.withDefaultNamespace("friends/illustrations_00");
	private final Minecraft minecraft;
	private final FriendsOverlayScreen screen;
	private final LinearLayout layout;
	private final LinearLayout friendScrollableContent;
	private final LoadingDotsWidget loadingDotsWidget;
	private final AddFriendWidget addFriendWidget;
	private final ScrollableLayout scrollableLayout;

	FriendsTab(final Minecraft minecraft, final LoadingDotsWidget loadingDotsWidget, final FriendsOverlayScreen screen, final int width, final int height) {
		super(width, height);
		this.minecraft = minecraft;
		this.screen = screen;
		this.layout = LinearLayout.vertical();
		this.layout.defaultCellSetting().alignHorizontallyCenter();
		this.loadingDotsWidget = loadingDotsWidget;
		this.addFriendWidget = new AddFriendWidget(width, this::sendFriendRequest);
		this.layout.addChild(this.addFriendWidget);
		this.friendScrollableContent = LinearLayout.vertical();
		this.friendScrollableContent.defaultCellSetting();
		this.scrollableLayout = new ScrollableLayout(
			minecraft, this.friendScrollableContent, height - this.addFriendWidget.contentHeight(), ScrollableLayout.ReserveStrategy.RIGHT
		);
		this.layout.addChild(this.scrollableLayout);
		this.rearrangeElements();
	}

	public void showLoading() {
		this.friendScrollableContent.removeChildren();
		this.friendScrollableContent.addChild(this.createCenteredFrame(this.loadingDotsWidget, this.width - 18, this.height - this.addFriendWidget.contentHeight()));
		this.addFriendWidget.applyState(AddFriendWidget.State.SENDING);
	}

	public void showError(final Component message) {
		this.friendScrollableContent.removeChildren();
		FocusableTextWidget text = FocusableTextWidget.builder(message.copy().withStyle(ChatFormatting.GRAY), this.screen.getFont())
			.maxWidth(this.width - 16 - 4)
			.alwaysShowBorder(false)
			.backgroundFill(FocusableTextWidget.BackgroundFill.NEVER)
			.build();
		text.setCentered(true);
		this.friendScrollableContent.addChild(this.createCenteredFrame(text, this.width, this.height - this.addFriendWidget.contentHeight()));
		this.addFriendWidget.applyState(AddFriendWidget.State.DISABLED);
	}

	public void showEmpty() {
		this.friendScrollableContent.removeChildren();
		LinearLayout content = new LinearLayout(0, 0, LinearLayout.Orientation.VERTICAL).spacing(8);
		content.defaultCellSetting().alignHorizontallyCenter().alignVerticallyMiddle().paddingLeft(8);
		content.addChild(ImageWidget.sprite(128, 48, ILLUSTRATION));
		FocusableTextWidget textWidget = FocusableTextWidget.builder(EMPTY_STATE, this.screen.getFont())
			.maxWidth(this.width - 16 - 4)
			.alwaysShowBorder(false)
			.backgroundFill(FocusableTextWidget.BackgroundFill.NEVER)
			.build();
		textWidget.setCentered(true);
		textWidget.setComponentClickHandler(style -> {
			if (style.getClickEvent() instanceof OpenUrl openUrl) {
				PrivacyConfirmLinkScreen.confirmLinkNow(this.screen, openUrl.uri());
			}
		});
		content.addChild(textWidget);
		int frameHeight = this.scrollableLayout.getHeight();
		FrameLayout linearLayout = this.friendScrollableContent.addChild(this.createCenteredFrame(content, this.width - 10, frameHeight));
		linearLayout.defaultChildLayoutSetting().paddingLeft(8).paddingTop(0).alignHorizontallyCenter().alignVerticallyMiddle();
		this.addFriendWidget.applyState(this.addFriendWidget.getValue().isEmpty() ? AddFriendWidget.State.EMPTY_INPUT : AddFriendWidget.State.READY);
	}

	@Override
	void rearrangeElements() {
		this.scrollableLayout.setMinHeight(this.height - this.addFriendWidget.contentHeight());
		this.scrollableLayout.setMaxHeight(this.height - this.addFriendWidget.contentHeight());
	}

	private void sendFriendRequest() {
		String name = this.addFriendWidget.getValue();
		if (!name.isBlank() && !this.checkLocalConflicts(name)) {
			this.addFriendWidget.applyState(AddFriendWidget.State.SENDING);
			this.layout.arrangeElements();
			this.minecraft.getPlayerSocialManager().sendFriendRequest(name).thenAcceptAsync(var1x -> {
				this.addFriendWidget.setValue("");
				this.addFriendWidget.applyState(AddFriendWidget.State.EMPTY_INPUT);
				this.screen.refreshLists();
			}, this.minecraft);
		} else {
			this.addFriendWidget.applyState(AddFriendWidget.State.EMPTY_INPUT);
			this.layout.arrangeElements();
		}
	}

	private boolean checkLocalConflicts(final String name) {
		String selfName = this.minecraft.getUser().getName();
		if (selfName.equalsIgnoreCase(name)) {
			return true;
		} else {
			PlayerSocialManager social = this.minecraft.getPlayerSocialManager();
			return this.contains(name, social.getFriends()) || this.contains(name, social.getOutgoingRequests()) || this.contains(name, social.getIncomingRequests());
		}
	}

	private boolean contains(final String playerName, final List<PlayerSocialManager.PlayerData> players) {
		for (PlayerSocialManager.PlayerData playerData : players) {
			if (playerData.name().equalsIgnoreCase(playerName)) {
				return true;
			}
		}

		return false;
	}

	@Override
	public Component getTabTitle() {
		return TAB_TITLE;
	}

	@Override
	public Component getTabExtraNarration() {
		return Component.empty();
	}

	@Override
	public void visitChildren(final Consumer<AbstractWidget> childrenConsumer) {
		this.layout.visitWidgets(childrenConsumer);
	}

	@Override
	public void doLayout(final ScreenRectangle screenRectangle) {
		this.layout.arrangeElements();
		FrameLayout.alignInRectangle(this.layout, screenRectangle, 0.5F, 0.16666667F);
	}

	@Override
	public Layout getLayout() {
		return this.layout;
	}

	void updateEntries(final List<FriendEntry> friendEntries) {
		this.friendScrollableContent.removeChildren();
		friendEntries.forEach(this.friendScrollableContent::addChild);
		this.friendScrollableContent.addChild(this.createManageAccountFooter());
	}

	private FrameLayout createManageAccountFooter() {
		FocusableTextWidget textWidget = FocusableTextWidget.builder(MANAGE_ACCOUNT_FOOTER, this.screen.getFont())
			.maxWidth(this.width - 16 - 4)
			.alwaysShowBorder(false)
			.backgroundFill(FocusableTextWidget.BackgroundFill.NEVER)
			.build();
		textWidget.setCentered(true);
		textWidget.setComponentClickHandler(style -> {
			if (style.getClickEvent() instanceof OpenUrl openUrl) {
				PrivacyConfirmLinkScreen.confirmLinkNow(this.screen, openUrl.uri());
			}
		});
		FrameLayout frame = new FrameLayout(this.width - 10, textWidget.getHeight());
		frame.defaultChildLayoutSetting().alignHorizontallyCenter().alignVerticallyMiddle();
		frame.addChild(textWidget);
		return frame;
	}

	@Override
	protected Layout entriesContainer() {
		return this.friendScrollableContent;
	}
}