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package it.inaf.ia2.gms.service;
import it.inaf.ia2.gms.model.Permission;
import it.inaf.ia2.gms.persistence.JoinDAO;
import it.inaf.ia2.gms.persistence.MembershipsDAO;
import it.inaf.ia2.gms.persistence.PermissionsDAO;
import it.inaf.ia2.gms.persistence.model.MembershipEntity;
import it.inaf.ia2.gms.persistence.model.PermissionEntity;
import java.util.Set;
import java.util.stream.Collectors;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class JoinService {
@Autowired
private MembershipsDAO membershipsDAO;
@Autowired
private PermissionsDAO permissionsDAO;
@Autowired
private JoinDAO joinDAO;
public void join(String userId1, String userId2) {
Set<MembershipEntity> existingMemberships
= membershipsDAO.getUserMemberships(userId1).stream()
.map(g -> getMembershipEntity(g.getId(), userId1))
.collect(Collectors.toSet());
Set<MembershipEntity> membershipsToAdd
= membershipsDAO.getUserMemberships(userId2).stream()
.map(g -> getMembershipEntity(g.getId(), userId1))
.filter(m -> !existingMemberships.contains(m))
.collect(Collectors.toSet());
Set<PermissionEntity> existingPermissions
= permissionsDAO.findUserPermissions(userId1).stream()
.collect(Collectors.toSet());
Set<PermissionEntity> permissionsToAdd
= permissionsDAO.findUserPermissions(userId2).stream()
.map(p -> {
p.setUserId(userId1);
return p;
})
.filter(p -> isPermissionToAdd(existingPermissions, p))
.collect(Collectors.toSet());
joinDAO.join(membershipsToAdd, permissionsToAdd, userId2);
}
private MembershipEntity getMembershipEntity(String groupId, String userId) {
MembershipEntity entity = new MembershipEntity();
entity.setGroupId(groupId);
entity.setUserId(userId);
return entity;
}
private boolean isPermissionToAdd(Set<PermissionEntity> existingPermissions, PermissionEntity permissionToCheck) {
for (PermissionEntity permission : existingPermissions) {
if (permission.getGroupId().equals(permissionToCheck.getGroupId())
&& permission.getUserId().equals(permissionToCheck.getUserId())) {
if (permission.getPermission() == permissionToCheck.getPermission()) {
return false;
}
Permission strongerPermission = Permission.addPermission(
permission.getPermission(), permissionToCheck.getPermission());
return permission.getPermission() != strongerPermission;
}
}
return true;
}
}