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User module
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package com.axway.apim.users.impl;

import java.lang.reflect.Constructor;
import java.util.Collections;
import java.util.List;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.axway.apim.adapter.APIManagerAdapter;
import com.axway.apim.adapter.user.UserFilter;
import com.axway.apim.adapter.user.UserFilter.Builder;
import com.axway.apim.api.model.CustomProperties.Type;
import com.axway.apim.api.model.User;
import com.axway.apim.lib.ExportResult;
import com.axway.apim.lib.error.AppException;
import com.axway.apim.lib.error.ErrorCode;
import com.axway.apim.users.lib.params.UserExportParams;

public abstract class UserResultHandler {

	private static final Logger LOG = LoggerFactory.getLogger(UserResultHandler.class);

	public enum ResultHandler {
		JSON_EXPORTER(JsonUserExporter.class),
		YAML_EXPORTER(YamlUserExporter.class),
		CONSOLE_EXPORTER(ConsoleUserExporter.class),
		USER_DELETE_HANDLER(DeleteUserHandler.class),
		USER_CHANGE_PASSWORD_HANDLER(UserChangePasswordHandler.class);

		private final Class implClass;

		@SuppressWarnings({ "rawtypes", "unchecked" })
		ResultHandler(Class clazz) {
			this.implClass = clazz;
		}

		public Class getClazz() {
			return implClass;
		}
	}

	UserExportParams params;
	ExportResult result;

	boolean hasError = false;

	public static UserResultHandler create(ResultHandler exportImpl, UserExportParams params, ExportResult result) throws AppException {
		try {
			Object[] intArgs = new Object[] { params, result };
			Constructor constructor =
					exportImpl.getClazz().getConstructor(UserExportParams.class, ExportResult.class);
			return constructor.newInstance(intArgs);
		} catch (Exception e) {
			throw new AppException("Error initializing application exporter", ErrorCode.UNXPECTED_ERROR, e);
		}
	}

	protected UserResultHandler(UserExportParams params, ExportResult result) {
		this.params = params;
		this.result = result;
	}

	public abstract void export(List users) throws AppException;

	public boolean hasError() {
		return this.hasError;
	}

	protected Builder getBaseFilterBuilder() {
		return new Builder()
				.hasId(params.getId())
				.hasLoginName(params.getLoginName())
				.hasName(params.getName())
				.hasOrganization(params.getOrg())
				.hasType(params.getType())
				.hasEmail(params.getEmail())
				.hasRole(params.getRole())
				.includeCustomProperties(getAPICustomProperties())
				.isEnabled(params.isEnabled());
	}

	protected List getAPICustomProperties() {
		try {
			return APIManagerAdapter.getInstance().getCustomPropertiesAdapter().getCustomPropertyNames(Type.user);
		} catch (AppException e) {
			LOG.error("Error reading custom properties user configuration from API-Manager");
			return Collections.emptyList();
		}
	}

	public abstract UserFilter getFilter() throws AppException;
}