/**
 * ============LICENSE_START=======================================================
 * org.onap.aai
 * ================================================================================
 * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============LICENSE_END=========================================================
 */

package org.onap.aai.schemagen.genxsd;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.StringTokenizer;
import java.util.Vector;
import org.apache.commons.lang3.StringUtils;
import org.onap.aai.schemagen.GenerateXsd;

public class NodeGetOperation {
    static Map<String, Vector<String>> containers = new HashMap<String, Vector<String>>();
    static ArrayList<String> checklist = createChecklist();

    private static ArrayList<String> createChecklist() {
        ArrayList<String> list = new ArrayList<String>();
        return list;
    }

    public static void addContainerProps(String container, Vector<String> containerProps) {
        containers.put(container, containerProps);
    }

    public static void resetContainers() {
        containers = new HashMap<String, Vector<String>>();
        checklist = createChecklist();
    }

    private String useOpId;
    private String xmlRootElementName;
    private String tag;
    private String path;
    private String CRUDpath;
    private String pathParams;
    private String queryParams;

    public NodeGetOperation(String useOpId, String xmlRootElementName, String tag, String path,
                            String pathParams) {
        super();
        this.useOpId = useOpId;
        this.xmlRootElementName = xmlRootElementName;
        this.tag = tag;
        this.CRUDpath = path;
        this.path = nodePath();
        this.pathParams = pathParams;
        StringBuilder p = new StringBuilder();

        if (containers.get(xmlRootElementName) == null) {
            this.queryParams = "";
        } else {
            this.queryParams = String.join("", containers.get(xmlRootElementName));
            for (String param : containers.get(xmlRootElementName)) {
                p.append(param);
            }
            this.queryParams = p.toString();
        }
    }

    String nodePath() {
        String path = null;
        int loc = CRUDpath.indexOf(xmlRootElementName);
        if (loc > 0) {
            path = "/nodes/" + CRUDpath.substring(loc);
        }
        return path;
    }

    @Override
    public String toString() {
        StringTokenizer st;
        st = new StringTokenizer(CRUDpath, "/");
        //Path has to be longer than one element
			/*
			if ( st.countTokens() <= 1) {
				return "";
			}
			*/
        //a valid tag is necessary
        if (StringUtils.isEmpty(tag)) {
            return "";
        }
        if (CRUDpath.endsWith("/relationship")) {
            return "";
        }
        if (CRUDpath.contains("/relationship/")) { // filter paths with relationship-list
            return "";
        }
        if (CRUDpath.endsWith("/relationship-list")) {
            return "";
        }
        if (CRUDpath.startsWith("/search")) {
            return "";
        }
        if (CRUDpath.startsWith("/actions")) {
            return "";
        }
        if (CRUDpath.startsWith("/nodes")) {
            return "";
        }
        if (checklist.contains(xmlRootElementName)) {
            return "";
        }
        StringBuilder pathSb = new StringBuilder();
        if (path.indexOf('{') == -1) {
            path += "?parameter=value[&parameter2=value2]";
        }
        pathSb.append("  ").append(path).append(":\n");
        pathSb.append("    get:\n");
        pathSb.append("      tags:\n");
        pathSb.append("        - Operations" + "\n");
        pathSb.append("      summary: returns ").append(xmlRootElementName).append("\n");

        pathSb.append("      description: returns ").append(xmlRootElementName).append("\n");
        pathSb.append("      operationId: get").append(useOpId).append("\n");
        pathSb.append("      produces:\n");
        pathSb.append("        - application/json\n");
        pathSb.append("        - application/xml\n");

        pathSb.append("      responses:\n");
        pathSb.append("        \"200\":\n");
        pathSb.append("          description: successful operation\n");
        pathSb.append("          schema:\n");
        pathSb.append("              $ref: \"#/definitions/").append(xmlRootElementName)
            .append("\"\n");
        pathSb.append("        \"default\":\n");
        pathSb.append("          ").append(GenerateXsd.getResponsesUrl());
        if (StringUtils.isNotEmpty(pathParams) || StringUtils.isNotEmpty(queryParams)) {
            pathSb.append("\n      parameters:\n");
        }
        if (StringUtils.isNotEmpty(pathParams)) {
            pathSb.append(pathParams);
        }
        if (StringUtils.isNotEmpty(pathParams) && StringUtils.isNotEmpty(queryParams)) {
            pathSb.append("\n");
        }
        if (StringUtils.isNotEmpty(queryParams)) {
            pathSb.append(queryParams);
        }
        checklist.add(xmlRootElementName);
        return pathSb.toString();
    }
}