package eu.dnetlib.doiboost.orcid

import com.fasterxml.jackson.databind.ObjectMapper
import eu.dnetlib.dhp.schema.common.ModelConstants
import eu.dnetlib.dhp.schema.oaf.{Author, DataInfo, Publication}
import eu.dnetlib.dhp.schema.orcid.{AuthorData, OrcidDOI}
import eu.dnetlib.doiboost.DoiBoostMappingUtil
import eu.dnetlib.doiboost.DoiBoostMappingUtil.{createSP, generateDataInfo}
import org.apache.commons.lang.StringUtils
import org.slf4j.{Logger, LoggerFactory}

import scala.collection.JavaConverters._
import org.json4s
import org.json4s.DefaultFormats
import org.json4s.JsonAST._
import org.json4s.jackson.JsonMethods._


case class ORCIDItem(doi:String, authors:List[OrcidAuthor]){}
case class OrcidAuthor(oid:String, name:Option[String], surname:Option[String], creditName:Option[String], otherNames:Option[List[String]], errorCode:Option[String]){}
case class OrcidWork(oid:String, doi:String)




case class ORCIDElement(doi:String, authors:List[ORCIDItem]) {}
object ORCIDToOAF {
  val logger: Logger = LoggerFactory.getLogger(ORCIDToOAF.getClass)
  val mapper = new ObjectMapper()

  def isJsonValid(inputStr: String): Boolean = {
    import java.io.IOException
    try {
      mapper.readTree(inputStr)
      true
    } catch {
      case e: IOException =>
        false
    }
  }

  def extractValueFromInputString(input: String): (String, String) = {
    val i = input.indexOf('[')
    if (i <5) {
      return null
    }
    val orcidList = input.substring(i, input.length - 1)
    val doi = input.substring(1, i - 1)
    if (isJsonValid(orcidList)) {
      (doi, orcidList)
    } else null
  }


  def strValid(s:Option[String]) : Boolean = {
    s.isDefined && s.get.nonEmpty
  }

  def authorValid(author:OrcidAuthor): Boolean ={
    if (strValid(author.name) && strValid(author.surname)) {
      return true
    }
    if (strValid(author.surname)) {
      return  true
    }
    if (strValid(author.creditName)) {
      return true

    }
    false
  }


  def extractDOIWorks(input:String): List[OrcidWork] = {
    implicit lazy val formats: DefaultFormats.type = org.json4s.DefaultFormats
    lazy val json: json4s.JValue = parse(input)

    val oid = (json \ "workDetail" \"oid").extractOrElse[String](null)
    if (oid == null)
      return List()
    val doi:List[(String, String)] = for {
      JObject(extIds) <-  json \ "workDetail" \"extIds"
      JField("type", JString(typeValue)) <- extIds
      JField("value", JString(value)) <- extIds
      if "doi".equalsIgnoreCase(typeValue)
    } yield (typeValue, value)
    if (doi.nonEmpty) {
      return doi.map(l =>OrcidWork(oid, l._2))
    }
    List()
  }

  def convertORCIDAuthor(input:String): OrcidAuthor = {
    implicit lazy val formats: DefaultFormats.type = org.json4s.DefaultFormats
    lazy val json: json4s.JValue = parse(input)

    (json \"authorData" ).extractOrElse[OrcidAuthor](null)
  }


  def convertTOOAF(input:ORCIDItem) :Publication = {
    val doi = input.doi
    val pub:Publication = new Publication
    pub.setPid(List(createSP(doi.toLowerCase, "doi", ModelConstants.DNET_PID_TYPES)).asJava)
    pub.setDataInfo(generateDataInfo())

    pub.setId(DoiBoostMappingUtil.generateIdentifier(pub, doi.toLowerCase))

    try{

      val l:List[Author]= input.authors.map(a=> {
        generateAuthor(a)
      })(collection.breakOut)

      pub.setAuthor(l.asJava)
      pub.setCollectedfrom(List(DoiBoostMappingUtil.createORIDCollectedFrom()).asJava)
      pub.setDataInfo(DoiBoostMappingUtil.generateDataInfo())
      pub
    } catch {
      case e: Throwable =>
        logger.info(s"ERROR ON GENERATE Publication from $input")
        null
    }
  }

  def generateOricPIDDatainfo():DataInfo = {
    val di =DoiBoostMappingUtil.generateDataInfo("0.91")
    di.getProvenanceaction.setClassid("sysimport:crosswalk:entityregistry")
    di.getProvenanceaction.setClassname("Harvested")
    di
  }

  def generateAuthor(o : OrcidAuthor): Author = {
    val a = new Author
    if (strValid(o.name)) {
      a.setName(o.name.get.capitalize)
    }
    if (strValid(o.surname)) {
      a.setSurname(o.surname.get.capitalize)
    }
    if(strValid(o.name) && strValid(o.surname))
      a.setFullname(s"${o.name.get.capitalize} ${o.surname.get.capitalize}")
    else if (strValid(o.creditName))
      a.setFullname(o.creditName.get)
    if (StringUtils.isNotBlank(o.oid))
      a.setPid(List(createSP(o.oid, ModelConstants.ORCID, ModelConstants.DNET_PID_TYPES, generateOricPIDDatainfo())).asJava)

    a
  }


}