package eu.dnetlib.repo.manager.service;

import eu.dnetlib.api.functionality.ValidatorService;
import eu.dnetlib.api.functionality.ValidatorServiceException;
import eu.dnetlib.domain.functionality.validator.JobForValidation;
import eu.dnetlib.domain.functionality.validator.StoredJob;
import eu.dnetlib.repo.manager.shared.Constants;
import eu.dnetlib.repo.manager.shared.JobsOfUser;
import gr.uoa.di.driver.util.ServiceLocator;
import org.apache.log4j.Logger;
import org.eurocris.openaire.cris.validator.model.Job;
import org.eurocris.openaire.cris.validator.service.MapJobDao;
import org.json.JSONException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import javax.mail.Store;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.List;
import java.util.stream.Collectors;

@Service("monitorService")
public class MonitorServiceImpl implements MonitorService {

    @Autowired
    private MapJobDao crisJobs;

    @Resource(name = "validatorServiceLocator")
    private ServiceLocator<ValidatorService> validatorServiceLocator;

    private ValidatorService getValidationService() {
        return this.validatorServiceLocator.getService();
    }

    public ServiceLocator<ValidatorService> getValidatorServiceLocator() {
        return validatorServiceLocator;
    }

    public void setValidatorServiceLocator(ServiceLocator<ValidatorService> validatorServiceLocator) {
        this.validatorServiceLocator = validatorServiceLocator;
    }


    private static final Logger LOGGER = Logger
            .getLogger(MonitorServiceImpl.class);

    @Override
    public JobsOfUser getJobsOfUser(String user,
                                    String jobType,
                                    String offset,
                                    String limit,
                                    String dateFrom,
                                    String dateTo,
                                    String validationStatus,
                                    String includeJobsTotal) throws JSONException, ValidatorServiceException {

        LOGGER.debug("Getting jobs of user : " + user);
        LOGGER.debug(user + "/" + jobType + "/" + offset + "/" + dateFrom + "/" + dateTo + "/" + validationStatus + "/" + includeJobsTotal);
        JobsOfUser retJobs = new JobsOfUser();
        retJobs.setJobs(getValidationService().getStoredJobsNew(user, jobType, Integer.parseInt(offset),
                Integer.parseInt(limit), dateFrom, dateTo, validationStatus));

        if (Boolean.parseBoolean(includeJobsTotal)) {
            retJobs.setTotalJobs(this.getJobsTotalNumberOfUser(user, jobType, null));
            retJobs.setTotalJobsSuccessful(this.getJobsTotalNumberOfUser(user, jobType, Constants.VALIDATION_JOB_STATUS_SUCCESSFUL));
            retJobs.setTotalJobsFailed(this.getJobsTotalNumberOfUser(user, jobType, Constants.VALIDATION_JOB_STATUS_FAILED));
            retJobs.setTotalJobsOngoing(this.getJobsTotalNumberOfUser(user, jobType,Constants.VALIDATION_JOB_STATUS_ONGOING));
        }

        //TODO fix status with new validator version
        if(retJobs.getJobs() != null){
            for(StoredJob job :retJobs.getJobs()){
                if (job.getContentJobStatus().equals("ongoing") || job.getUsageJobStatus().equals("ongoing")) {
                    job.setValidationStatus("ongoing");
                } else if ((job.getValidationType().equals("CU") && job.getContentJobStatus().equals("finished") && job.getUsageJobStatus().equals("finished") && job.getContentJobScore() > 50 && job.getUsageJobScore() > 50)
                        || (job.getValidationType().equals("C") && job.getContentJobStatus().equals("finished") && job.getUsageJobStatus().equals("none") && job.getContentJobScore() > 50)
                        || (job.getValidationType().equals("U") && job.getContentJobStatus().equals("none") && job.getUsageJobStatus().equals("finished") && job.getUsageJobScore() > 50)) {
                    job.setValidationStatus("successful");
                } else if ((job.getValidationType().equals("CU") && job.getContentJobStatus().equals("finished") && job.getUsageJobStatus().equals("finished") && (job.getContentJobScore() <= 50 || job.getUsageJobScore() <= 50))
                        || (job.getValidationType().equals("C") && job.getContentJobStatus().equals("finished") && job.getUsageJobStatus().equals("none") && job.getContentJobScore() <= 50)
                        || (job.getValidationType().equals("U") && job.getContentJobStatus().equals("none") && job.getUsageJobStatus().equals("finished") && job.getUsageJobScore() <= 50) ) {
                    job.setValidationStatus("failed");
                }

            }
        }
        /////////////////////////////////////////////////////////////////////////////////////////
        // FIXME: this is a hack for CRIS Jan Dvorak Validator, should be implemented properly //
        /////////////////////////////////////////////////////////////////////////////////////////
        List<StoredJob> jobs = new ArrayList<>();

        List<Job> cj = crisJobs.getJobs(user);
        for (Job job : cj) {

            StoredJob sj = converJobToStoredJob(job);


            // filter out entries based on 'validationStatus'
            if ("all".equals(validationStatus)) {
                jobs.add(sj);
            } else {
                if (sj.getValidationStatus().equals(validationStatus)) {
                    jobs.add(sj);
                }
            }
        }

        // add to CRIS Jan jobs all other jobs
        if (retJobs.getJobs() != null) {
            jobs.addAll(retJobs.getJobs());
        }
        // set all jobs back to retJobs
        retJobs.setJobs(jobs);

        // fix number of jobs
        if (Boolean.parseBoolean(includeJobsTotal)) {
            retJobs.setTotalJobs(retJobs.getTotalJobs() + crisJobs.getJobs(user).size());
            retJobs.setTotalJobsSuccessful(retJobs.getTotalJobsSuccessful() + crisJobs.getJobs(user, Job.Status.SUCCESSFUL.getKey()).size());
            retJobs.setTotalJobsFailed(retJobs.getTotalJobsFailed() + crisJobs.getJobs(user, Job.Status.FAILED.getKey()).size());
            retJobs.setTotalJobsOngoing(retJobs.getTotalJobsOngoing() + crisJobs.getJobs(user, Job.Status.ONGOING.getKey()).size());
        }
        /////////////////////////////////////////////////////////////////////////////////////////
        /////////////////////////////////////////////////////////////////////////////////////////

        return retJobs;

    }

    private int getJobsTotalNumberOfUser(String user, String jobType, String validationStatus) throws ValidatorServiceException {
        return  getValidationService().getStoredJobsTotalNumberNew(user, jobType, validationStatus);
    }

    @Override
    public int getJobsOfUserPerValidationStatus(String user,
                                                String jobType,
                                                String validationStatus) throws JSONException {
        LOGGER.debug("Getting job with validation status : " + validationStatus);
        try {
            return getValidationService().getStoredJobsTotalNumberNew(user, jobType, validationStatus);
        } catch (ValidatorServiceException e) {
            LOGGER.error(e);
        }
        return 0;
    }

    @Override
    public StoredJob getJobSummary(String jobId,
                                   String groupBy) throws JSONException {
        LOGGER.debug("Getting job summary with id : " + jobId);
        StoredJob job = null;
        try {
            job = getValidationService().getStoredJob(Integer.parseInt(jobId), groupBy);
        } catch (ValidatorServiceException e) {
            LOGGER.error(e);
        }
        /////////////////////////////////////////////////////////////////////////////////////////
        // FIXME: this is a hack for CRIS Jan Dvorak Validator, should be implemented properly //
        /////////////////////////////////////////////////////////////////////////////////////////
        if (job == null) {
            // not a good way to do it but Job id field is string
            List<Job> cJobs = crisJobs.getAll().stream().filter(j -> j.getId().hashCode() == Integer.parseInt(jobId)).collect(Collectors.toList());
            if (!cJobs.isEmpty()) {
                job = converJobToStoredJob(cJobs.get(0));
            }
        }
        /////////////////////////////////////////////////////////////////////////////////////////
        /////////////////////////////////////////////////////////////////////////////////////////
        return job;
    }

    private StoredJob converJobToStoredJob(Job job) {
        StoredJob sj = new StoredJob();
        sj.setId(job.getId().hashCode());
        sj.setValidationStatus(job.getStatus());
        if (job.getDateFinished() != null) {
            sj.setEnded(job.getDateFinished().toString());
            sj.setDuration(new Date(job.getDateFinished().getTime() - job.getDateStarted().getTime()).toString());
        } else {
            sj.setEnded("-");
            sj.setDuration("-");
        }
        sj.setStarted(job.getDateStarted().toString());

        sj.setUserEmail(job.getUser());
        sj.setCris(true);
        sj.setBaseUrl(job.getUrl());
        sj.setJobType("CRIS Validation");

        // TODO: status
        sj.setValidationStatus(job.getStatus());
        sj.setUsageJobStatus(job.getStatus());
        sj.setContentJobStatus(job.getStatus());

        // TODO: scores
//            sj.setFilteredScores();
        sj.setContentJobScore(job.getScore());
        sj.setUsageJobScore(job.getScore());

        sj.setValidationType("CRIS Validation");

        return sj;
    }

}