package net.minecraft.client.tutorial;

import net.fabricmc.api.EnvType;
import net.fabricmc.api.Environment;
import net.minecraft.ChatFormatting;
import net.minecraft.client.Minecraft;
import net.minecraft.client.Options;
import net.minecraft.client.multiplayer.ClientLevel;
import net.minecraft.client.player.ClientInput;
import net.minecraft.core.BlockPos;
import net.minecraft.network.chat.Component;
import net.minecraft.world.inventory.ClickAction;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.level.GameType;
import net.minecraft.world.level.block.state.BlockState;
import net.minecraft.world.phys.HitResult;
import org.jetbrains.annotations.Nullable;

@Environment(EnvType.CLIENT)
public class Tutorial {
	private final Minecraft minecraft;
	@Nullable
	private TutorialStepInstance instance;

	public Tutorial(Minecraft minecraft, Options options) {
		this.minecraft = minecraft;
	}

	public void onInput(ClientInput input) {
		if (this.instance != null) {
			this.instance.onInput(input);
		}
	}

	public void onMouse(double velocityX, double velocityY) {
		if (this.instance != null) {
			this.instance.onMouse(velocityX, velocityY);
		}
	}

	public void onLookAt(@Nullable ClientLevel level, @Nullable HitResult result) {
		if (this.instance != null && result != null && level != null) {
			this.instance.onLookAt(level, result);
		}
	}

	public void onDestroyBlock(ClientLevel level, BlockPos pos, BlockState state, float diggingStage) {
		if (this.instance != null) {
			this.instance.onDestroyBlock(level, pos, state, diggingStage);
		}
	}

	/**
	 * Called when the player opens his inventory
	 */
	public void onOpenInventory() {
		if (this.instance != null) {
			this.instance.onOpenInventory();
		}
	}

	/**
	 * Called when the player pick up an ItemStack
	 */
	public void onGetItem(ItemStack stack) {
		if (this.instance != null) {
			this.instance.onGetItem(stack);
		}
	}

	public void stop() {
		if (this.instance != null) {
			this.instance.clear();
			this.instance = null;
		}
	}

	/**
	 * Reloads the tutorial step from the game settings
	 */
	public void start() {
		if (this.instance != null) {
			this.stop();
		}

		this.instance = this.minecraft.options.tutorialStep.create(this);
	}

	public void tick() {
		if (this.instance != null) {
			if (this.minecraft.level != null) {
				this.instance.tick();
			} else {
				this.stop();
			}
		} else if (this.minecraft.level != null) {
			this.start();
		}
	}

	/**
	 * Sets a new step to the tutorial
	 */
	public void setStep(TutorialSteps step) {
		this.minecraft.options.tutorialStep = step;
		this.minecraft.options.save();
		if (this.instance != null) {
			this.instance.clear();
			this.instance = step.create(this);
		}
	}

	public Minecraft getMinecraft() {
		return this.minecraft;
	}

	public boolean isSurvival() {
		return this.minecraft.gameMode == null ? false : this.minecraft.gameMode.getPlayerMode() == GameType.SURVIVAL;
	}

	public static Component key(String keybind) {
		return Component.keybind("key." + keybind).withStyle(ChatFormatting.BOLD);
	}

	public void onInventoryAction(ItemStack carriedStack, ItemStack slottedStack, ClickAction action) {
	}
}