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package net.serenitybdd.screenplay.questions.targets;

import net.serenitybdd.screenplay.Actor;
import net.serenitybdd.screenplay.Question;
import net.serenitybdd.screenplay.annotations.Subject;
import net.serenitybdd.screenplay.questions.Attribute;
import net.serenitybdd.screenplay.targets.Target;

import java.util.Collection;
import java.util.List;
import java.util.function.Function;
import java.util.stream.Collectors;

@Subject("#target")
public class TargetTextValues implements Question> {

    private final Target target;
    private final Function renderElement;

    private static Function  NO_CHANGE = value -> value;
    private static Function  TRIM_WHITESPACE = String::trim;


    TargetTextValues(Target target) {
        this(target, NO_CHANGE);
    }

    private TargetTextValues(Target target, Function renderElement) {
        this.target = target;
        this.renderElement = renderElement;
    }

    public TargetTextValues withNoSurroundingWhiteSpace() {
        return new TargetTextValues(target, TRIM_WHITESPACE);
    }

    @Override
    public Collection answeredBy(Actor actor) {
        Collection textValues = Attribute.ofEach(target)
                                            .named("innerText")
                                            .answeredBy(actor);

        return textValues.stream()
                         .map(renderElement)
                         .collect(Collectors.toList());

    }
}