package com.sequenceiq.cloudbreak.service.lifetime;

import java.time.Duration;
import java.util.Map;
import java.util.Optional;

import javax.inject.Inject;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import com.sequenceiq.cloudbreak.api.model.Status;
import com.sequenceiq.cloudbreak.cloud.PlatformParametersConsts;
import com.sequenceiq.cloudbreak.core.flow2.service.ReactorFlowManager;
import com.sequenceiq.cloudbreak.domain.Stack;
import com.sequenceiq.cloudbreak.service.account.AccountPreferencesValidationFailed;
import com.sequenceiq.cloudbreak.service.account.AccountPreferencesValidator;
import com.sequenceiq.cloudbreak.service.stack.StackService;

@Service
public class ScheduledLifetimeChecker {
    private static final Logger LOGGER = LoggerFactory.getLogger(ScheduledLifetimeChecker.class);

    @Inject
    private StackService stackService;

    @Inject
    private AccountPreferencesValidator preferencesValidator;

    @Inject
    private ReactorFlowManager flowManager;

    @Scheduled(fixedRate = 60 * 1000, initialDelay = 60 * 1000)
    public void validate() {
        for (Stack stack : stackService.getAllAlive()) {
            getStackTimeToLive(stack).ifPresent(ttl -> {
                    try {
                        if (Status.DELETE_IN_PROGRESS != stack.getStatus() && stack.getCluster() != null && stack.getCluster().getCreationFinished() != null) {
                            preferencesValidator.validateClusterTimeToLive(stack.getCluster().getCreationFinished(), ttl.toMillis());
                        }
                    } catch (AccountPreferencesValidationFailed avf) {
                        terminateStack(stack);
                    }
                });
        }
    }

    private Optional<Duration> getStackTimeToLive(Stack stack) {
        Map<String, String> params = stack.getParameters();
        return Optional.ofNullable(params.get(PlatformParametersConsts.TTL)).map(s -> Duration.ofMillis(Long.parseLong(s)));
    }

    private void terminateStack(Stack stack) {
        if (!stack.isDeleteCompleted()) {
            LOGGER.info("Trigger termination of stack: '{}', owner: '{}', account: '{}'.", stack.getName(), stack.getOwner(), stack.getAccount());
            flowManager.triggerTermination(stack.getId(), false);
        }
    }
}