package jnpf.dmsService.pdf;

import jnpf.dmsEntity.permission.entity.DmsFileVersionEntity;
import jnpf.dmsEntity.storage.entity.DmsFileObjectEntity;
import jnpf.dmsEntity.storage.model.DmsPersistentPdfSource;

public final class DmsPersistentPdfSources {
    private DmsPersistentPdfSources() { }

    public static DmsPersistentPdfSource valid(DmsFileVersionEntity version,
                                                DmsFileObjectEntity object) {
        if (version == null || object == null || blank(object.getPdfObjectKey())
                || object.getPdfSizeBytes() == null || object.getPdfSizeBytes() <= 0
                || blank(object.getPdfChecksumSha256())
                || blank(object.getPdfSourceChecksumSha256())
                || blank(version.getChecksumSha256())
                || !object.getPdfSourceChecksumSha256().equalsIgnoreCase(version.getChecksumSha256())) {
            return null;
        }
        DmsPersistentPdfSource source = new DmsPersistentPdfSource();
        source.setObjectKey(object.getPdfObjectKey());
        source.setSizeBytes(object.getPdfSizeBytes());
        source.setChecksumSha256(object.getPdfChecksumSha256());
        source.setSourceChecksumSha256(object.getPdfSourceChecksumSha256());
        return source;
    }

    private static boolean blank(String value) {
        return value == null || value.trim().isEmpty();
    }
}