package net.minecraft.util.datafix.fixes;

import com.mojang.datafixers.DSL;
import com.mojang.datafixers.DataFix;
import com.mojang.datafixers.DataFixUtils;
import com.mojang.datafixers.TypeRewriteRule;
import com.mojang.datafixers.schemas.Schema;

public class OptionsAddTextBackgroundFix extends DataFix {
	public OptionsAddTextBackgroundFix(final Schema outputSchema, final boolean changesType) {
		super(outputSchema, changesType);
	}

	@Override
	public TypeRewriteRule makeRule() {
		return this.fixTypeEverywhereTyped(
			"OptionsAddTextBackgroundFix",
			this.getInputSchema().getType(References.OPTIONS),
			input -> input.update(DSL.remainderFinder(), tag -> DataFixUtils.orElse(tag.get("chatOpacity").asString().map(value -> {
				double opacity = this.calculateBackground(value);
				return tag.set("textBackgroundOpacity", tag.createString(String.valueOf(opacity)));
			}).result(), tag))
		);
	}

	private double calculateBackground(final String textOpacity) {
		try {
			double textAlpha = 0.9 * Double.parseDouble(textOpacity) + 0.1;
			return textAlpha / 2.0;
		} catch (NumberFormatException var4) {
			return 0.5;
		}
	}
}