/**
 * 
 */
package org.gcube.accounting.datamodel;

import java.io.Serializable;
import java.util.Map;
import java.util.SortedSet;

import org.gcube.accounting.datamodel.validations.annotations.ValidOperationResult;
import org.gcube.accounting.datamodel.validations.validators.ValidOperationResultValidator;
import org.gcube.common.authorization.client.Constants;
import org.gcube.common.authorization.library.AuthorizationEntry;
import org.gcube.common.authorization.library.provider.SecurityTokenProvider;
import org.gcube.common.scope.api.ScopeProvider;
import org.gcube.documentstore.exception.InvalidValueException;
import org.gcube.documentstore.records.implementation.AbstractRecord;
import org.gcube.documentstore.records.implementation.RequiredField;
import org.gcube.documentstore.records.implementation.validations.annotations.NotEmpty;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.fasterxml.jackson.annotation.JsonIgnore;

/**
 * @author Luca Frosini (ISTI - CNR)
 */
public abstract class BasicUsageRecord extends AbstractRecord implements UsageRecord {

	/**
	 * Generated Serial Version UID
	 */
	private static final long serialVersionUID = -2060728578456796388L;

	private static Logger logger = LoggerFactory.getLogger(BasicUsageRecord.class);

	@RequiredField
	@NotEmpty
	public static final String CONSUMER_ID = UsageRecord.CONSUMER_ID;

	@RequiredField
	@NotEmpty
	public static final String SCOPE = UsageRecord.SCOPE;

	@RequiredField
	@ValidOperationResult
	public static final String OPERATION_RESULT = UsageRecord.OPERATION_RESULT;

	public static String getContextFromToken() {

		String scope = ScopeProvider.instance.get();
		if (scope == null) {
			String token = SecurityTokenProvider.instance.get();

			AuthorizationEntry authorizationEntry;
			try {
				authorizationEntry = Constants.authorizationService().get(token);
			} catch (Exception e) {
				throw new RuntimeException(e);
			}
			scope = authorizationEntry.getContext();
		}
		return scope;
	}

	/**
	 * Initialize variable
	 */
	protected void init() {
		super.init();
		// Backward compatibility
		try {
			this.setScope(getContextFromToken());
		} catch (Exception e) {
			logger.warn(
					"Unable to automaticcally set the scope using scope provider. The record will not be valid if the scope will not be explicitly set.");
		}
	}

	public BasicUsageRecord() {
		super();
	}

	public BasicUsageRecord(Map<String, ? extends Serializable> properties) throws InvalidValueException {
		super(properties);
	}

	@Override
	public SortedSet<String> getQuerableKeys() throws Exception {
		SortedSet<String> properties = super.getQuerableKeys();

		properties.remove(UsageRecord.SCOPE);

		return properties;
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public String getConsumerId() {
		return (String) this.resourceProperties.get(CONSUMER_ID);
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void setConsumerId(String consumerId) throws InvalidValueException {
		setResourceProperty(CONSUMER_ID, consumerId);
	}

	@Override
	public String getRecordType() {
		return BasicUsageRecord.class.getSimpleName();
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public String getScope() {
		return (String) this.resourceProperties.get(SCOPE);
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public void setScope(String scope) throws InvalidValueException {
		setResourceProperty(SCOPE, scope);
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public OperationResult getOperationResult() {
		try {
			return (OperationResult) new ValidOperationResultValidator().validate(OPERATION_RESULT,
					this.resourceProperties.get(OPERATION_RESULT), null);
		} catch (Exception e) {
			return null;
		}
	}

	/**
	 * {@inheritDoc}
	 * 
	 * @throws InvalidValueException
	 */
	@JsonIgnore
	@Override
	public void setOperationResult(OperationResult operationResult) throws InvalidValueException {
		setResourceProperty(OPERATION_RESULT, operationResult);
	}

}