/*
 *
 *  * ============LICENSE_START=======================================================
 *  *  org.onap.dcae
 *  *  ================================================================================
 *  *  Copyright (c) 2020  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
 *  *
 *  *   http://www.apache.org/licenses/LICENSE-2.0
 *  *
 *  *  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.blueprintgenerator.service.base;

import org.onap.blueprintgenerator.model.base.Blueprint;
import org.onap.blueprintgenerator.model.common.Input;
import org.onap.blueprintgenerator.model.componentspec.base.ComponentSpec;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;


import java.io.File;
import java.io.IOException;
import java.io.FileWriter;
import java.io.BufferedWriter;
import java.io.PrintWriter;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.regex.Pattern;

/**
 * @author : Ravi Mantena
 * @date 10/16/2020
 * Application: DCAE/ONAP - Blueprint Generator
 * Common Module: Used by both ONAp and DCAE Blueprint Applications
 * Service: For Adding Quotes and Converting Blueprint to Yaml/String
 */

@Service
public abstract class BlueprintService {

  @Autowired
  protected FixesService fixesService;

  @Qualifier("objectMapper")
  @Autowired
  protected ObjectMapper objectMapper;

  @Qualifier("yamlObjectMapper")
  @Autowired
  protected ObjectMapper yamlObjectMapper;

  public void blueprintToYaml(ComponentSpec cs, Blueprint blueprint, Input input) {
    String bluePrintName = input.getBluePrintName();
    String outputPath = input.getOutputPath();
    String comment = "# " + input.getComment() + '\n';

    try {
    File outputFile;
    String name = StringUtils.isEmpty(bluePrintName) ? cs.getSelf().getName() : bluePrintName;
    if(name.contains(".")) {
      name = name.replaceAll(Pattern.quote("."), "_");
    }
    if(name.contains(" ")) {
      name = name.replaceAll(" ", "");
    }
    String file = name + ".yaml";
    outputFile = new File(outputPath, file);
    outputFile.getParentFile().mkdirs();
    try {
      outputFile.createNewFile();
    } catch (IOException e) {
      throw new RuntimeException(e);
    }

    String version = "#blueprint_version: " + cs.getSelf().getVersion() + '\n';
    String description = "#description: " + cs.getSelf().getDescription() + '\n';

    BufferedWriter writer = new BufferedWriter(new FileWriter(outputFile, false));
    writer.write(description);
    writer.write(version);

    if(input.getBpType().equals("dti") || input.getBpType().equals("m") || input.getBpType().equals("k"))
      writer.write(comment);

    writer.close();

    PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(outputFile, true)));
    yamlObjectMapper.writeValue(out, blueprint);
    out.close();

    if(input.getBpType().equals("dti") || input.getBpType().equals("m") || input.getBpType().equals("k"))
      fixesService.fixDcaeSingleQuotes(outputFile);
    else
      fixesService.fixOnapSingleQuotes(outputFile);

    //new Yaml().load(new FileInputStream(outputFile));

    System.out.println("Blueprint is created with valid YAML Format");
    } catch (Exception ex) {
    throw new RuntimeException("Unable to generate YAML file from Blueprint  or the generated YAML is not valid", ex);
    }
  }

  // Used for DCAE
  public Map<String, LinkedHashMap<String, Object>> addQuotes(Map<String, LinkedHashMap<String, Object>> inputs) {

    inputs.forEach((key,value) -> {
    if(value.get("type") != null){
      if (value.get("type").equals("string") && value.get("default") != null && !key.contains("policies")){
        value.replace("default",  "'" + value.get("default").toString() + "'");
      } else if (value.get("type").equals("map") || value.get("type").equals("list")) {
        // Commented the Code as we need to read the object as is for Map and List. If the List object is to be converted to string uncomment the below code.
        /* if(inputs.get(s).get("type").equals("list")) {
        String temp = inputs.get(s).get("default").toString();
        inputs.get(s).replace("default", temp);
        }*/
        inputs.get(key).remove("type");
      }
    }
    });

   return inputs;
  }

  public String blueprintToString(ComponentSpec componentSpec, Blueprint blueprint, Input input) {
    String ret = "";
    try {
    ret = yamlObjectMapper.writerWithDefaultPrettyPrinter().writeValueAsString(blueprint);
    } catch (JsonProcessingException e) {
    e.printStackTrace();
    }
    if(input.getBpType().equals("dti") || input.getBpType().equals("m") || input.getBpType().equals("k")){
    ret = "# " + componentSpec.getSelf().getDescription() + "\n" + "# " + componentSpec.getSelf().getVersion() + "\n" + "# " + input.getComment() + "\n" + ret;
    ret = fixesService.fixStringQuotes(ret);
    }else
    ret = fixesService.applyFixes(ret);
    return ret;
  }


}