package org.gcube.application.geoportal.service.engine.caches;

import lombok.extern.slf4j.Slf4j;
import org.gcube.application.cms.tests.TokenSetter;
import org.gcube.application.geoportal.service.engine.providers.AbstractScopedMap;
import org.gcube.application.geoportal.service.engine.providers.TTLObject;
import org.gcube.application.geoportal.service.model.internal.faults.ConfigurationException;
import org.junit.Test;

import java.time.Duration;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.temporal.ChronoUnit;
import java.util.concurrent.TimeUnit;

import static org.junit.Assert.assertTrue;

@Slf4j
public class Caches {

    @Test
    public void testCache() throws ConfigurationException {

        TokenSetter.set("/gcube/devsec/devVRE");

        Duration ttl=Duration.of(10, ChronoUnit.SECONDS);

        Duration monitorWindow=Duration.of(100, ChronoUnit.SECONDS);

        DummyCache cache= new DummyCache();
        cache.setTTL(ttl);


        Instant startMonitoring=Instant.now();

        LocalDateTime previous=cache.getObject();
        while(Duration.between(startMonitoring,Instant.now()).compareTo(monitorWindow)<0){
            LocalDateTime obj= cache.getObject();
            if(obj.equals(previous)){
                //objects are equals, TTL should be valid
                // Assert : now-creationTime < TTL
                assertTrue(Duration.between(obj,LocalDateTime.now()).compareTo(ttl)<0);
            }else {
                // different object only after TTL
                // Assert : now-creationTime < TTL
                assertTrue(Duration.between(obj,LocalDateTime.now()).compareTo(ttl)<0);
                // Assert : now-previous.creationTime > TTL
                assertTrue(Duration.between(previous,LocalDateTime.now()).compareTo(ttl)>0);
            }
            previous=obj;
            try {
                Thread.sleep(ttl.abs().dividedBy(2).toMillis());
            } catch (InterruptedException e) {
            }
        }




    }

}