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package net.serenitybdd.screenplay;

import net.serenitybdd.core.Serenity;
import net.serenitybdd.core.eventbus.Broadcaster;
import net.serenitybdd.screenplay.events.ActorAsksQuestion;
import net.serenitybdd.screenplay.formatting.StripRedundantTerms;
import net.thucydides.core.steps.StepEventBus;

import java.util.Optional;
import java.util.function.Predicate;

public class PredicateConsequence extends BaseConsequence {
    protected final Question question;
    protected final Predicate expected;
    protected final String subject;

    public PredicateConsequence(Question actual, Predicate expected) {
        this(null, actual, expected);
    }

    public PredicateConsequence(String subjectText, Question actual, Predicate expected) {
        this.question = actual;
        this.expected = expected;
        this.subject = QuestionSubject.fromClass(actual.getClass()).andQuestion(actual).subject();
        this.subjectText = Optional.ofNullable(subjectText);
    }

    @Override
    public void evaluateFor(Actor actor) {
        if (thisStepShouldBeIgnored() && !StepEventBus.getParallelEventBus().softAssertsActive()) { return; }

        Broadcaster.getEventBus().post(new ActorAsksQuestion(question, actor.getName()));

        Serenity.injectScenarioStepsInto(question);


        try {
            performSetupActionsAs(actor);
            if (!expected.test(question.answeredBy(actor))) {
                throw new AssertionError("predicate failed");
            }

        } catch (Throwable actualError) {

            throwComplaintTypeErrorIfSpecified(errorFrom(actualError));

            throwDiagosticErrorIfProvided(errorFrom(actualError));

            throw actualError;
        }
    }

    private void throwDiagosticErrorIfProvided(Error actualError) {
        if (question instanceof QuestionDiagnostics) {
            throw Complaint.from(((QuestionDiagnostics) question).onError(), actualError);
        }
    }

    @Override
    public String toString() {
        String template = explanation.orElse("Then %s should be %s");
        String expectedExpression = StripRedundantTerms.from(expected.toString());
        return addRecordedInputValuesTo(String.format(template, subjectText.orElse(subject), expectedExpression));
    }
}