class DMAndPMManagementForExternalConfiguration
  @@reactorHandler = ReactorHandler.new
  @@mvnReactorization = MvnReactorization.new
  @@cordinateArr = Array.new

  def getParentCordinates(externalPomUrl,tag)
    pom_document = Nokogiri::XML(open(externalPomUrl))
    if tag == "dependency"
      getCordinatesListFromEffectivepom(pom_document)
    else
      @@cordinateArr=Array.new
      getCordinatesFromParentPlugin(pom_document,"project/build/pluginManagement/plugins/plugin")
      getCordinatesFromParentPlugin(pom_document,"project/build/plugins/plugin")
    end
    return @@cordinateArr.uniq
  end

  def getCordinatesListFromEffectivepom(pom_document)
    pom_document.css("project/dependencyManagement/dependencies/dependency").each do |eachDependency|
      grpId =  eachDependency.at("groupId").text
      artId = eachDependency.at("artifactId").text
      version = eachDependency.at("version").text
      fullDependency = "#{grpId}:#{artId}:#{version}"
      @@cordinateArr.push(fullDependency)
    end
    findParent(pom_document,"dependency")
  end

  def findParent(pom_document,tag)
    if @@reactorHandler.tag_exists?('project/parent', pom_document)
      dependencyHandler = DependencyHandler.new
      parentPom = dependencyHandler.getParentPomDomObjFromUrl(pom_document)
      if tag == "dependency"
        getCordinatesListFromEffectivepom(parentPom)
      else
        getCordinatesFromParentPlugin(parentPom,"project/build/pluginManagement/plugins/plugin")
        getCordinatesFromParentPlugin(parentPom,"project/build/plugins/plugin")
      end
    else
      puts ":::::::::::End of Searching::::::"
    end
  end

  def getCordinatesFromParentPlugin(pom_document,tag)
    pom_document.css(tag).each do |eachPlugin|
      grpId=nil
      if (eachPlugin.at("groupId").nil?)
        grpId="org.apache.maven.plugins"
      else
        grpId = eachPlugin.at("groupId").text
      end
      artifactId =  eachPlugin.at("artifactId").text
      version=nil
      if (!eachPlugin.at("version").nil? and eachPlugin.at("version").parent.name=="plugin")
        version =  eachPlugin.at("version").text
      end
      if !version.nil?
        if version.include?"${"
          version = version.gsub("${","")
          version = version.gsub("}","")
          version =  findPropVal(pom_document,version)
        end
        fullCordinate = "#{grpId}:#{artifactId}:#{version}"
        @@cordinateArr.push(fullCordinate)
      end
    end
    findParent(pom_document,"plugins")
  end

  def findPropVal(pom_document,proTag)
    propVal=nil
    pom_document.at("project/properties").children.each do |eachProp|
      if eachProp.name == proTag
        propVal =  eachProp.text
      end
    end
    return propVal
  end

  def comparetheVersionWithParent(project_directory_path,cordinateArr,tag)
    pomPathArr = @@reactorHandler.fetchGidArtifactIdAndVersionFromChildModule(project_directory_path,false)
    reactorPomPath = "#{project_directory_path}/pom.xml"
    pomPathArr.push(reactorPomPath)
    pomPathArr.each do |eachPomPath|
      pom_document =  @@reactorHandler.parse_xml_from_file(eachPomPath)
      pom_document.css(tag).each do |eachDependency|
        grpId=nil
        if (eachDependency.at("groupId").nil?)
          grpId="org.apache.maven.plugins"
        else
          grpId = eachDependency.at("groupId").text
        end
        artifactId =  eachDependency.at("artifactId").text
        version=nil
        fullArtifactId=nil
        if ((!eachDependency.at("version").nil?) and (eachDependency.at("version").parent.name=="dependency"))
          version = eachDependency.at("version").text
          fullArtifactId = "#{grpId}:#{artifactId}:#{version}"
        end
        if (!fullArtifactId.nil? and cordinateArr.include?fullArtifactId and !tag.include?"dependencyManagement/" and eachDependency.parent.parent.name=="project")
          eachDependency.at("version").remove
        elsif (cordinateArr.include?fullArtifactId and eachDependency.at("exclusions").nil? and tag.include?"dependencyManagement/")
          eachDependency.remove
        end
      end
      @@mvnReactorization.write_nokogiri_to_xml(eachPomPath, pom_document)
      puts "Dm is done"
    end
  end

  def comparethePluginVersionWithParent(project_directory_path,cordinateArr,tag)
    pomPathArr = @@reactorHandler.fetchGidArtifactIdAndVersionFromChildModule(project_directory_path,false)
    pomPathArr.each do |eachPomPath|
      pom_document =  @@reactorHandler.parse_xml_from_file(eachPomPath)
      pom_document.css(tag).each do |eachPlugin|
        grpId=nil
        if (eachPlugin.at("groupId").nil?)
          grpId="org.apache.maven.plugins"
        else
          grpId = eachPlugin.at("groupId").text
        end
        artifactId =  eachPlugin.at("artifactId").text
        version=nil
        fullArtifactId=nil
        isParentGreater=false
        if ((!eachPlugin.at("version").nil?) and (eachPlugin.at("version").parent.name=="plugin"))
          version = eachPlugin.at("version").text
          if version.include?"${"
            version = version.gsub("${","")
            version = version.gsub("}","")
            version =  findPropVal(pom_document,version)
          end
          fullArtifactId = "#{grpId}:#{artifactId}:#{version}"
          isParentGreater =  findHigherVersionOfPlugin(fullArtifactId,cordinateArr)
        end
        if (!fullArtifactId.nil? and isParentGreater)
          eachPlugin.at("version").remove
        end
      end
      @@mvnReactorization.write_nokogiri_to_xml(eachPomPath, pom_document)
      puts "remove version of plugin is successfull"
    end
  end

def comaprePluginVersionWihReactorPom(project_directory_path,cordinateArr,tag)
    pomPath = "#{project_directory_path}/pom.xml"
    pom_document =  @@reactorHandler.parse_xml_from_file(pomPath)
    pom_document.css(tag).each do |eachPlugin|
      grpId=nil
      if (eachPlugin.at("groupId").nil?)
        grpId="org.apache.maven.plugins"
      else
        grpId = eachPlugin.at("groupId").text
      end
      artifactId =  eachPlugin.at("artifactId").text
      version=nil
      fullArtifactId=nil
      isParentGreater=false
      if ((!eachPlugin.at("version").nil?) and (eachPlugin.at("version").parent.name=="plugin"))
        version = eachPlugin.at("version").text
        fullArtifactId = "#{grpId}:#{artifactId}:#{version}"
        isParentGreater =  findHigherVersionOfPlugin(fullArtifactId,cordinateArr)
      end
      if (!fullArtifactId.nil? and isParentGreater)
        eachPlugin.remove
      end
    end
   pluginNode =  pom_document.at("project/build/pluginManagement/plugins/plugin")
   buildNode = pom_document.at("project/build")
   if (pluginNode.nil? and !buildNode.nil?)
     buildNode.remove
   end
    @@mvnReactorization.write_nokogiri_to_xml(pomPath, pom_document)
    puts "remove version of plugin is successfull"
  end

  def findHigherVersionOfPlugin(fullArtifactId,cordinateArr)
    isParentGreater = false
    cordinateArrWithoutVersion = Hash.new
    cordinateArr.each do |eachCordinate|
      eachValArr = eachCordinate.split(":")
      grpId = eachValArr[0]
      artifactId = eachValArr[1]
      fullArtfactId = "#{grpId}:#{artifactId}"
      cordinateArrWithoutVersion[fullArtfactId] = eachValArr[2]
    end
    childCordinateArr = fullArtifactId.split(":")
    childCordinate = "#{childCordinateArr[0]}:#{childCordinateArr[1]}"
    childPluginVersion = childCordinateArr[2]
    if(!cordinateArrWithoutVersion[childCordinate].nil?)
      parentVersion = cordinateArrWithoutVersion[childCordinate]
      isParentGreater = compareVersion(childPluginVersion,parentVersion)
    end
    return isParentGreater
  end
  
 def compareVersion(childPluginVersion,parentVersion)
    if (!childPluginVersion.nil? and !parentVersion.nil? and parentVersion>=childPluginVersion)
      return true
    else
      return false
    end
  end 
end