/*
 * 
 */
package org.gcube.datacatalogue.utillibrary.gcat;

import java.net.MalformedURLException;
import java.util.HashMap;
import java.util.Map;

import javax.ws.rs.WebApplicationException;
import javax.xml.ws.WebServiceException;

import org.gcube.gcat.api.moderation.CMItemStatus;
import org.gcube.gcat.api.moderation.Moderated;
import org.gcube.gcat.client.Group;
import org.gcube.gcat.client.Item;
import org.gcube.gcat.client.Resource;
import org.json.simple.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * The Class GCatCaller.
 *
 * @author Francesco Mangiacrapa at ISTI-CNR Pisa (Italy) May 29, 2020
 */
public class GCatCaller {

	private String catalogueURL;

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

	/**
	 * Instantiates a new g cat caller.
	 *
	 * @param catalogueURL the catalogue URL
	 */
	public GCatCaller(String catalogueURL) {
		this.catalogueURL = catalogueURL;
	}

	/**
	 * Gets the catalogue URL.
	 *
	 * @return the catalogue URL
	 */
	public String getCatalogueURL() {
		return catalogueURL;
	}

	/**
	 * Gets the dataset for name.
	 *
	 * @param datasetName the dataset name
	 * @return the jsonValue
	 * @throws WebApplicationException the web application exception
	 * @throws MalformedURLException   the malformed URL exception
	 */
	public String getDatasetForName(String datasetName) throws WebApplicationException, MalformedURLException {
		LOG.debug("GetDatasetForName called");
		LOG.info("Get dataset for name " + datasetName + "called");
		return new Item().read(datasetName);
	}

	/**
	 * Creates the dataset.
	 *
	 * @param jsonDataset the json dataset
	 * @param socialPost  if true sends the social post
	 * @return the jsonValue
	 * @throws WebApplicationException the web application exception
	 * @throws MalformedURLException   the malformed URL exception
	 */
	public String createDataset(String jsonDataset, boolean socialPost)
			throws WebApplicationException, MalformedURLException {
		LOG.debug("Create dataset called");
		LOG.info("Calling create on: " + jsonDataset);
		return new Item().create(jsonDataset, socialPost);
	}

	/**
	 * Adds the resource to dataset.
	 *
	 * @param datasetId         the dataset id
	 * @param jsonValueResource the json value resource
	 * @return the string
	 * @throws MalformedURLException the malformed URL exception
	 */
	public String addResourceToDataset(String datasetId, String jsonValueResource) throws MalformedURLException {
		LOG.debug("Create resource called");
		LOG.info("Calling create resource: " + jsonValueResource + " for dataset id: " + datasetId);
		return new Resource().create(datasetId, jsonValueResource);
	}

	/**
	 * Delete resource.
	 *
	 * @param datasetId  the dataset id
	 * @param resourceId the resource id
	 * @throws MalformedURLException the malformed URL exception
	 */
	public void deleteResource(String datasetId, String resourceId) throws MalformedURLException {
		LOG.debug("Delete resource called");
		LOG.info("Calling delete resource with: " + resourceId + " for dataset id: " + datasetId);
		new Resource().delete(datasetId, resourceId);
	}

	/**
	 * Creates the group.
	 *
	 * @param jsonGroup the json group
	 * @return the string
	 * @throws MalformedURLException the malformed URL exception
	 */
	public String createGroup(String jsonGroup) throws MalformedURLException {
		LOG.debug("Create group called");
		LOG.info("Calling create group: " + jsonGroup);
		return new Group().create(jsonGroup);
	}

	/**
	 * Patch dataset.
	 *
	 * @param datasetName the dataset name
	 * @param jsonObj     the json obj
	 * @return the string
	 * @throws WebApplicationException the web application exception
	 * @throws MalformedURLException   the malformed URL exception
	 */
	public String patchDataset(String datasetName, JSONObject jsonObj)
			throws WebApplicationException, MalformedURLException {
		LOG.debug("Patch dataset called");
		LOG.info("Calling patch dataset with name: " + datasetName);

		return new Item().patch(datasetName, jsonObj.toJSONString());

	}

	/**
	 * Approve item.
	 *
	 * @param datasetName      the dataset name
	 * @param moderatorMessage the moderator message
	 * @return the string
	 * @throws WebApplicationException the web application exception
	 * @throws MalformedURLException   the malformed URL exception
	 */
	public String approveItem(String datasetName, String moderatorMessage)
			throws WebApplicationException, MalformedURLException {
		LOG.debug("Approve item called");
		LOG.info("Calling approve item with name: " + datasetName + ", and msg: " + moderatorMessage);

		return new Item().approve(datasetName, moderatorMessage);

	}

	/**
	 * Reject item.
	 *
	 * @param datasetName       the dataset name
	 * @param permanentlyDelete the permanently delete
	 * @param moderatorMessage  the moderator message
	 * @return the string
	 * @throws WebServiceException   the web service exception
	 * @throws MalformedURLException the malformed URL exception
	 */
	public String rejectItem(String datasetName, boolean permanentlyDelete, String moderatorMessage)
			throws WebServiceException, MalformedURLException {
		LOG.debug("Reject item called");
		LOG.info("Calling reject item with name: " + datasetName + ", and msg: " + moderatorMessage);

		String toReturnMsg = new Item().reject(datasetName, moderatorMessage);

		if (permanentlyDelete) {
			deleteItem(datasetName, true);
		}

		return toReturnMsg;
	}

	/**
	 * Delete item.
	 *
	 * @param datasetName the dataset name
	 * @param purge       the purge
	 * @throws WebServiceException   the web service exception
	 * @throws MalformedURLException the malformed URL exception
	 */
	public void deleteItem(String datasetName, boolean purge) throws WebServiceException, MalformedURLException {
		LOG.debug("Delete item called");
		LOG.info("Calling delete item with name: " + datasetName + ", and purge: " + purge);

		new Item().delete(datasetName, purge);
		return;
	}

	/**
	 * Gets the list items for CM status.
	 *
	 * @param status the status
	 * @param limit  the limit
	 * @param offset the offset
	 * @return the list items for CM status
	 * @throws WebServiceException   the web service exception
	 * @throws MalformedURLException the malformed URL exception
	 */
	public String getListItemsForCMStatus(CMItemStatus status, int limit, int offset)
			throws WebServiceException, MalformedURLException {
		LOG.debug("getListItemsForStatus called");
		LOG.info("Calling list items for status: " + status);

		Map<String, String> queryParams = new HashMap<String, String>();
		// queryParams.put(Moderated.SYSTEM_CM_ITEM_STATUS, status.getValue());

		String modStatusField = Moderated.SYSTEM_CM_ITEM_STATUS.replaceAll(":", "_");
		queryParams.put("q", "extras_" + modStatusField + ":" + status.getValue());

		if (limit < 0)
			limit = 10;
		if (offset < 0)
			offset = 0;

		queryParams.put("limit", limit + "");
		queryParams.put("offset", offset + "");

		return getListItemsForQuery(queryParams);
	}

	/**
	 * Count list items for CM status.
	 *
	 * @param status the status
	 * @return the int
	 * @throws WebServiceException   the web service exception
	 * @throws MalformedURLException the malformed URL exception
	 */
	public int countListItemsForCMStatus(CMItemStatus status) throws WebServiceException, MalformedURLException {
		LOG.debug("countListItemsForCMStatus called");
		LOG.info("Calling coun list items for status: " + status);

		Map<String, String> queryParams = new HashMap<String, String>();
		// queryParams.put(Moderated.SYSTEM_CM_ITEM_STATUS, status.getValue());

		String modStatusField = Moderated.SYSTEM_CM_ITEM_STATUS.replaceAll(":", "_");
		queryParams.put("q", "extras_" + modStatusField + ":" + status.getValue());
		queryParams.put("count", "true");
		String theSize = getListItemsForQuery(queryParams);
		int count = 0;
		try {
			count = Integer.parseInt(theSize);
		} catch (Exception e) {
			LOG.warn("Size retured by gCat is not an integer, returning: " + count);
		}
		return count;
	}

	/**
	 * Gets the list items.
	 *
	 * @param limit  the limit
	 * @param offset the offset
	 * @return the list items
	 * @throws WebServiceException   the web service exception
	 * @throws MalformedURLException the malformed URL exception
	 */
	public String getListItems(int limit, int offset) throws WebServiceException, MalformedURLException {
		LOG.debug("getListItems called");
		LOG.info("Calling list items with limit: " + limit + ", offset: " + offset);

		return new Item().list(limit, offset);
	}

	/**
	 * Gets the list items for query.
	 *
	 * @param queryParams the query params
	 * @return the list items for query
	 * @throws WebServiceException   the web service exception
	 * @throws MalformedURLException the malformed URL exception
	 */
	public String getListItemsForQuery(Map<String, String> queryParams)
			throws WebServiceException, MalformedURLException {
		LOG.debug("getListItems forQuery called");
		LOG.info("Calling list items for query: " + queryParams);

		return new Item().list(queryParams);
	}
}