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package no.entur.logging.cloud.appender.scope;

import ch.qos.logback.classic.spi.ILoggingEvent;

import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.function.Predicate;

/**
 * Logging scope for temporarily adjusting what gets logged, caching the log skipped-over log statements in the process.
 *
 */
public class DefaultLoggingScope implements LoggingScope {

    private final Predicate queuePredicate;
    private final Predicate ignorePredicate;

    private final Predicate logLevelFailurePredicate;

    private boolean logLevelFailure = false;

    private ConcurrentLinkedQueue queue = new ConcurrentLinkedQueue();

    public DefaultLoggingScope(Predicate queuePredicate, Predicate ignorePredicate, Predicate logLevelFailurePredicate) {
        this.queuePredicate = queuePredicate;
        this.ignorePredicate = ignorePredicate;
        this.logLevelFailurePredicate = logLevelFailurePredicate;
    }

    public ConcurrentLinkedQueue getEvents() {
        return queue;
    }

    public boolean append(ILoggingEvent eventObject) {
        if(ignorePredicate.test(eventObject)) {
            return true;
        }

        if(!logLevelFailure && logLevelFailurePredicate.test(eventObject)) {
            logLevelFailure = true;
        }

        if(queuePredicate.test(eventObject)) {
            queue.add(eventObject);

            return true;
        }
        return false;
    }

    public boolean isLogLevelFailure() {
        return logLevelFailure;
    }
}