package com.mojang.realmsclient.gui.screens.configuration;

import com.mojang.realmsclient.RealmsMainScreen;
import com.mojang.realmsclient.dto.RealmsServer;
import com.mojang.realmsclient.dto.Subscription;
import com.mojang.realmsclient.gui.screens.RealmsPopups;
import com.mojang.realmsclient.util.RealmsUtil;
import java.time.Instant;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.time.format.FormatStyle;
import net.minecraft.ChatFormatting;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.Font;
import net.minecraft.client.gui.components.Button;
import net.minecraft.client.gui.components.FocusableTextWidget;
import net.minecraft.client.gui.components.StringWidget;
import net.minecraft.client.gui.components.tabs.GridLayoutTab;
import net.minecraft.client.gui.layouts.GridLayout;
import net.minecraft.client.gui.layouts.LayoutSettings;
import net.minecraft.client.gui.layouts.SpacerElement;
import net.minecraft.client.gui.screens.ConfirmLinkScreen;
import net.minecraft.network.chat.CommonComponents;
import net.minecraft.network.chat.Component;
import net.minecraft.util.CommonLinks;
import net.minecraft.util.Util;

public class RealmsSubscriptionTab extends GridLayoutTab implements RealmsConfigurationTab {
	private static final int DEFAULT_COMPONENT_WIDTH = 200;
	private static final int EXTRA_SPACING = 2;
	private static final int DEFAULT_SPACING = 6;
	public static final Component TITLE = Component.translatable("mco.configure.world.subscription.tab");
	private static final Component SUBSCRIPTION_START_LABEL = Component.translatable("mco.configure.world.subscription.start");
	private static final Component TIME_LEFT_LABEL = Component.translatable("mco.configure.world.subscription.timeleft");
	private static final Component DAYS_LEFT_LABEL = Component.translatable("mco.configure.world.subscription.recurring.daysleft");
	private static final Component SUBSCRIPTION_EXPIRED_TEXT = Component.translatable("mco.configure.world.subscription.expired").withStyle(ChatFormatting.GRAY);
	private static final Component SUBSCRIPTION_LESS_THAN_A_DAY_TEXT = Component.translatable("mco.configure.world.subscription.less_than_a_day")
		.withStyle(ChatFormatting.GRAY);
	private static final Component RECURRING_INFO = Component.translatable("mco.configure.world.subscription.recurring.info");
	private final RealmsConfigureWorldScreen configurationScreen;
	private final Minecraft minecraft;
	private final Button deleteButton;
	private final FocusableTextWidget subscriptionInfo;
	private final Component startDate;
	private final Component daysLeft;
	private RealmsServer serverData;

	public RealmsSubscriptionTab(
		final RealmsConfigureWorldScreen configurationScreen, final Minecraft minecraft, final RealmsServer serverData, final Subscription subscription
	) {
		super(TITLE);
		this.configurationScreen = configurationScreen;
		this.minecraft = minecraft;
		this.serverData = serverData;
		this.startDate = localPresentation(subscription.startDate());
		this.daysLeft = this.daysLeftPresentation(subscription.daysLeft());
		GridLayout.RowHelper helper = this.layout.rowSpacing(6).createRowHelper(1);
		Font font = configurationScreen.getFont();
		helper.addChild(new StringWidget(200, 9, SUBSCRIPTION_START_LABEL, font));
		helper.addChild(new StringWidget(200, 9, this.startDate, font));
		helper.addChild(SpacerElement.height(2));
		Component daysLeftLabel = subscription.type() == Subscription.SubscriptionType.RECURRING ? DAYS_LEFT_LABEL : TIME_LEFT_LABEL;
		helper.addChild(new StringWidget(200, 9, daysLeftLabel, font));
		helper.addChild(new StringWidget(200, 9, this.daysLeft, font));
		helper.addChild(SpacerElement.height(2));
		helper.addChild(
			Button.builder(
					Component.translatable("mco.configure.world.subscription.extend"),
					button -> ConfirmLinkScreen.confirmLinkNow(
						configurationScreen, CommonLinks.extendRealms(serverData.remoteSubscriptionId, minecraft.getUser().getProfileId())
					)
				)
				.bounds(0, 0, 200, 20)
				.build()
		);
		helper.addChild(SpacerElement.height(2));
		this.deleteButton = helper.addChild(
			Button.builder(
					Component.translatable("mco.configure.world.delete.button"),
					var3 -> minecraft.gui
						.setScreen(
							RealmsPopups.warningPopupScreen(configurationScreen, Component.translatable("mco.configure.world.delete.question.line1"), popup -> this.deleteRealm())
						)
				)
				.bounds(0, 0, 200, 20)
				.build()
		);
		helper.addChild(SpacerElement.height(2));
		this.subscriptionInfo = helper.addChild(
			FocusableTextWidget.builder(Component.empty(), font).maxWidth(200).build(), LayoutSettings.defaults().alignHorizontallyCenter()
		);
		this.subscriptionInfo.setCentered(false);
		this.updateData(serverData);
	}

	private void deleteRealm() {
		RealmsUtil.runAsync(
				client -> client.deleteRealm(this.serverData.id),
				RealmsUtil.openScreenAndLogOnFailure(this.configurationScreen::createErrorScreen, "Couldn't delete world")
			)
			.thenRunAsync(() -> this.minecraft.gui.setScreen(this.configurationScreen.getLastScreen()), this.minecraft);
		this.minecraft.gui.setScreen(this.configurationScreen);
	}

	private static Component localPresentation(final Instant time) {
		String formattedDate = ZonedDateTime.ofInstant(time, ZoneId.systemDefault()).format(Util.localizedDateFormatter(FormatStyle.MEDIUM));
		return Component.literal(formattedDate).withStyle(ChatFormatting.GRAY);
	}

	private Component daysLeftPresentation(final int daysLeft) {
		if (daysLeft < 0 && this.serverData.expired) {
			return SUBSCRIPTION_EXPIRED_TEXT;
		} else if (daysLeft <= 1) {
			return SUBSCRIPTION_LESS_THAN_A_DAY_TEXT;
		} else {
			int months = daysLeft / 30;
			int days = daysLeft % 30;
			boolean showMonths = months > 0;
			boolean showDays = days > 0;
			if (showMonths && showDays) {
				return Component.translatable("mco.configure.world.subscription.remaining.months.days", new Object[]{months, days}).withStyle(ChatFormatting.GRAY);
			} else if (showMonths) {
				return Component.translatable("mco.configure.world.subscription.remaining.months", new Object[]{months}).withStyle(ChatFormatting.GRAY);
			} else {
				return showDays
					? Component.translatable("mco.configure.world.subscription.remaining.days", new Object[]{days}).withStyle(ChatFormatting.GRAY)
					: Component.empty();
			}
		}
	}

	@Override
	public void updateData(final RealmsServer serverData) {
		this.serverData = serverData;
		boolean snapshotWorld = RealmsMainScreen.isSnapshot() && serverData.parentWorldName != null;
		this.deleteButton.active = serverData.expired;
		if (snapshotWorld) {
			this.subscriptionInfo.setMessage(Component.translatable("mco.snapshot.subscription.info", new Object[]{serverData.parentWorldName}));
		} else {
			this.subscriptionInfo.setMessage(RECURRING_INFO);
		}

		this.layout.arrangeElements();
	}

	@Override
	public Component getTabExtraNarration() {
		return CommonComponents.joinLines(new Component[]{TITLE, SUBSCRIPTION_START_LABEL, this.startDate, TIME_LEFT_LABEL, this.daysLeft});
	}
}