export class ParsingFunctions {

  constructor () {}

  public ngOnDestroy() {}

  public parseFundingByProjects(fundedByProjects: { "id": string, "acronym": string, "title": string,
                                                    "funderShortname": string, "funderName": string,
                                                    "funding": string, "code": string,
                                                    "provenanceAction": string, "inline": boolean
                                                  }[],
                                relation: any, projectsProvenanceVocabulary: any):
                            { "id": string, "acronym": string, "title": string,
                              "funderShortname": string, "funderName": string,
                              "funding": string, "code": string,
                              "provenanceAction": string, "inline": boolean
                            }[] {
    if(fundedByProjects == undefined) {
      fundedByProjects = new Array<{"id": string, "acronym": string, "title": string,
                                    "funderShortname": string, "funderName": string,
                                    "funding": string, "code": string,
                                    "provenanceAction": string, "inline": boolean
                                  }>();
    }

    let fundedByProject:  { "id": string, "acronym": string, "title": string,
                            "funderShortname": string, "funderName": string,
                            "funding": string, "code": string,
                            "provenanceAction": string, "inline": boolean
                          } = { "id": "", "acronym": "", "title": "",
                                "funderShortname": "", "funderName": "",
                                "funding": "", "code": "", "provenanceAction": "", "inline": false
                          };

    if(relation.title != 'unidentified') {
      fundedByProject['id'] = relation['to'].content;
      fundedByProject['acronym'] = relation.acronym;
      fundedByProject['title'] = relation.title;
      fundedByProject['code'] = relation.code;

      if(relation.provenanceaction in projectsProvenanceVocabulary) {
        fundedByProject['provenanceAction'] = projectsProvenanceVocabulary[relation.provenanceaction];
      }
    } else {
      fundedByProject['id'] = "";
      fundedByProject['acronym'] = "";
      fundedByProject['title'] = "";
      fundedByProject['code'] = "";
      fundedByProject['provenanceAction'] = "";
    }

    if(relation.hasOwnProperty("funding")) {
      let funding: {"funderName": string, "funderShortname": string, "stream": string};
      funding = this.parseFundingTrees(relation.funding);

      if(funding.funderName) {
        fundedByProject['funderName'] = funding.funderName;
      }
      if(funding.funderShortname) {
        fundedByProject['funderShortname'] = funding.funderShortname;
      }
      if(funding.stream) {
        fundedByProject['funding'] = funding.stream;
      }
    }
    fundedByProjects.push(fundedByProject);
    return fundedByProjects;
  }

  // publication & research data : for fundedByProjects | project landing : for funding
  public parseFundingTrees(fundingTree: any): {"funderName": string, "funderShortname": string, "stream": string} {
    let funding: {"funderName": string, "funderShortname": string, "stream": string} = {"funderName": "", "funderShortname": "", "stream": ""};
    let length = Array.isArray(fundingTree) ? fundingTree.length : 1;

    for(let i=0; i<length; i++) {
      let fundingData = Array.isArray(fundingTree) ? fundingTree[i] : fundingTree;

      if(fundingData.hasOwnProperty("funder")) {
        funding.funderShortname = fundingData['funder'].shortname;
        funding.funderName = fundingData['funder'].name;
      }

      funding.stream = this.addFundingLevel0(fundingData, funding.stream);

      funding.stream = this.addFundingLevel1(fundingData, funding.stream);

      funding.stream = this.addFundingLevel2(fundingData, funding.stream);
    }
    return funding;
  }

  addFundingLevel0(parent: string, fundingStream: string) : string {
    if(parent.hasOwnProperty("funding_level_0")) {
      let level0 = parent['funding_level_0'];

      fundingStream += (fundingStream) ? " ; " : "";
      fundingStream += level0.name;
    }
    return fundingStream;
  }

  addFundingLevel1(parent: string, fundingStream: string): string {
    if(parent.hasOwnProperty("funding_level_1")) {
      let level1 = parent['funding_level_1'];

      // For projects' parsing
      if(level1.hasOwnProperty("parent")) {
        fundingStream = this.addFundingLevel0(level1.parent, fundingStream);
      }

      fundingStream += (fundingStream) ? " | " : "";
      fundingStream += level1.name;
    }
    return fundingStream;
  }

  addFundingLevel2(parent: string, fundingStream: string): string {
    if(parent.hasOwnProperty("funding_level_2")) {
      let level2 = parent['funding_level_2'];

      // For projects' parsing
      if(level2.hasOwnProperty("parent")) {
        fundingStream = this.addFundingLevel1(level2.parent, fundingStream);
      }

      fundingStream += (fundingStream) ? " | " : "";
      fundingStream += level2.name;
    }
    return fundingStream;
  }

  // publication & dataset landing : for collectedFrom
  parseCollectedFrom( collectedFrom: {"name": string, "id": string}[],
                     _collectedFrom: any) {
    let length: number = collectedFrom.length;
    collectedFrom[length] = {"name": "", "id": ""};
    collectedFrom[length]['name'] = _collectedFrom.name;
    collectedFrom[length]['id'] = _collectedFrom.id;
  }

  // publication & dataset landing : for downloadFrom
  addPublisherToHostedBy_collectedFrom( hostedBy_collectedFrom: {"downloadName": string, "downloadUrl": string[], "collectedName": string, "collectedId": string, "accessMode": string[], "bestAccessMode": string, "type": string, "year":string}[],
                              publisher: string, journal:{"journal": string, "issn": string, "lissn": string},
                              identifiers: Map<string, string[]>, title: { "name": string, "url": string, "accessMode": string}) {
    if( publisher && identifiers != null && identifiers.has('doi')) {
      if( hostedBy_collectedFrom == null) {
        hostedBy_collectedFrom = new Array<{"downloadName": string, "downloadUrl": string[], "collectedName": string, "collectedId": string, "accessMode": string[], "bestAccessMode": string, "type": string, "year":string}>();
      }
      let available: {"downloadName": string, "downloadUrl": string[], "collectedName": string, "collectedId": string, "accessMode": string[], "bestAccessMode": string, "type": string, "year":string};
      available = {"downloadName": "", "downloadUrl": null, "collectedName": "", "collectedId": "", "accessMode": null, "bestAccessMode": null, "type": "", "year": ""};

      if(journal && journal.journal) {
        available.downloadName = publisher + "/ "+journal['journal'];
      } else {
        available.downloadName = publisher;
      }

      let url = "https://dx.doi.org/"+identifiers.get("doi")[0];

      available.downloadUrl = new Array<string>();
      available.accessMode = new Array<string>();

      available.downloadUrl.push(url);

      if(title != undefined && title['url'] == "") {
        title['url'] = url;
      }
      hostedBy_collectedFrom.push(available);
    }
    return hostedBy_collectedFrom;
  }

  // publication & dataset landing : for downloadFrom
  parseDownloadFrom(downloadFrom: Map<string, {"url": string[], "accessMode": string[], "bestAccessMode": string}>, instance: any, url: string)
  {
    let key: string = instance['hostedby'].name;

    if(key) {
      this.addUrlAndAccessMode(downloadFrom, instance, key, url);
    }
  }

  // publication & dataset landing : for publishedIn
  parsePublishedIn(publishedIn: Map<string, {"url": string[], "accessMode": string[], "bestAccessMode": string}>, instance: any, result: any, url: string, counter: number): number {
    if(result != null && result.hasOwnProperty("source")) {
      let key: string;
      if(Array.isArray(result.source)) {
        if(counter==result.source.length) {
          counter--;
        }
        key = result['source'][counter];
      } else {
        key = result['source'];
      }

      if(key) {
        this.addUrlAndAccessMode(publishedIn, instance, key, url);
        counter++;
      }
    }
    return counter;
  }

  // publication & dataset landing : for downloadFrom and publishedIn
  addUrlAndAccessMode(mapStructure: Map<string, {"url": string[], "accessMode": string[], "bestAccessMode": string}>, instance: any, key: string, url: string) {
    if(!mapStructure.has(key)) {
      mapStructure.set(key, {"url": null, "accessMode": null, "bestAccessMode": null});
    }

    if(mapStructure.get(key)['url'] == null) {
      mapStructure.get(key)['url'] = new Array<string>();
    }

    if(url) {
      mapStructure.get(key)['url'].push(url);
    }

    if(mapStructure.get(key)['accessMode'] == null) {
      mapStructure.get(key)['accessMode'] = new Array<string>();
    }

    if(instance.hasOwnProperty("accessright")) {
      if(url) {
        mapStructure.get(key)['accessMode'].push(instance['accessright'].classid);
      }

      if(this.changeBestAccessMode(mapStructure.get(key)['bestAccessMode'], instance['accessright'])) {
        mapStructure.get(key)['bestAccessMode'] = instance['accessright'].classid;
      }
    } else if(url) {
      mapStructure.get(key)['accessMode'].push("");
    }
  }


  parseHostedBy_collectedFrom(hostedBy_collectedFrom: { "downloadName": string, "downloadUrl": string[],
                                  "collectedName": string, "collectedId": string,
                                  "accessMode": string[], "bestAccessMode": string,
                                  "type": string, "year":string }[],
                   instance: any, data: any, url: string, counter: number,
                   title: { "name": string, "url": string, "accessMode": string}): number {
     let available: {"downloadName": string, "downloadUrl": string[], "collectedName": string, "collectedId": string, "accessMode": string[], "bestAccessMode": string, "type": string, "year":string};
     available = {"downloadName": "", "downloadUrl": null, "collectedName": "", "collectedId": "", "accessMode": null, "bestAccessMode": null, "type": "", "year": ""};

     if(instance['hostedby'].name && instance['hostedby'].name != "other resources" && instance['hostedby'].name != "Unknown Repository") {
       available.downloadName = instance['hostedby'].name;
     } else {
       if(data != null && data.hasOwnProperty("source")) {
         let downloadName: string;
         if(Array.isArray(data.source)) {

           if(counter==data.source.length) {
             counter--;
           }
           downloadName = data['source'][counter];
         } else {
           downloadName = data['source'];
         }
         if(downloadName) {
           counter++;
           available.downloadName = downloadName;
         }
       }

     }

     if(available.downloadName) {
       if(instance.hasOwnProperty("collectedfrom")) {
         available.collectedId = instance['collectedfrom'].id;
         available.collectedName = instance['collectedfrom'].name;
       }

       if(instance.hasOwnProperty("instancetype") && instance['instancetype'].classname) {
         available.type = instance['instancetype'].classname;
       }

       if(instance.hasOwnProperty("dateofacceptance")) {
         var date:string = (instance.dateofacceptance)+""; // transform to string in case it is an integer
         available.year  = (date && (date).indexOf('-') !== -1)?date.split('-')[0]:date;
       }

       available.accessMode = new Array<string>();
       available.downloadUrl = new Array<string>();
       available['downloadUrl'].push(url);
       if(instance.hasOwnProperty("accessright")) {
         if(url) {
           available['accessMode'].push(instance['accessright'].classid);
         }

         if(this.changeBestAccessMode(available.bestAccessMode, instance['accessright'])) {
           available.bestAccessMode = instance['accessright'].classid;

           if(title != undefined) {
             if(this.changeBestAccessMode(title['accessMode'], instance['accessright'])) {
               title['accessMode'] = instance['accessright'].classid;
               title['url'] = url;
             }
           }
         }

         if(title != undefined) {
           if(!title['url']) {
             title['url'] = url;
           }
         }

       } else if(url) {
         available['accessMode'].push("");
       }

       hostedBy_collectedFrom.push(available);
     }

     return counter;
  }

  // publication & dataset landing : for downloadFrom and publishedIn
  changeBestAccessMode(currentAccessMode: string, accessMode: any): boolean {
    if(!accessMode) {
      return false;
    }
    accessMode = accessMode.classid;

    switch (currentAccessMode) {
      case null:
        return true;
      case "CLOSED":
        if( accessMode == "OPEN" ||
            accessMode == "EMBARGO" ||
            accessMode == "RESTRICTED") {
              return true;
        }
        return false;
      case "RESTRICTED":
        if( accessMode == "OPEN" ||
            accessMode == "EMBARGO") {
              return true;
        }
        return false;
      case "EMBARGO":
        if(accessMode == "OPEN") {
          return true;
      }
      return false;
    }
    return false;
  }

  // publication & dataset landing : for relatedResearchResults
  parseRelatedResearchResults(relatedResearchResults: Map<string, { "name": string, "id": string, "date": string,
                    "trust": number, "class": string}[]>, relation: any, provenanceAction: string) :
                        Map<string, { "name": string, "id": string, "date": string,
                                      "trust": number, "class": string}[]> {
    if(relatedResearchResults == undefined) {
      relatedResearchResults = new Map<string, {"name": string, "id": string, "date": string,
                                                "trust": number, "class": string }[]>();
    }

    if(!relatedResearchResults.has(provenanceAction)) {
      relatedResearchResults.set(provenanceAction,
                        new Array<{ "name": string, "id": string, "date": string,
                                    "trust": number, "class": string }>());
    }
    relatedResearchResults.get(provenanceAction).push(this.parseRelatedOrSimilarResearchResult(relation));

    return relatedResearchResults;
  }

  // publication & dataset landing : for similarResearchResults
  parseSimilarResearchResults(similarResearchResults: { "name": string, "id": string, "date": string,
                                                        "trust": number, "class": string}[], relation: any) :
                { "name": string, "id": string, "date": string, "trust": number, "class": string }[] {
    if(similarResearchResults == undefined) {
      similarResearchResults = new Array<{"name": string, "id": string, "date": string,
                                          "trust": number, "class": string}>();
    }
    similarResearchResults.push(this.parseRelatedOrSimilarResearchResult(relation));
    return similarResearchResults;
  }

  // publication & dataset landing : for relatedResearchResults and similarResearchResults
  parseRelatedOrSimilarResearchResult(relation: any): {"name": string, "id": string, "date": string, "trust": number, "class": string} {
    let researchResult: {"name": string, "id": string, "date": string, "trust": number, "class": string}
                              = {"name": "", "id": "", "date": "", "trust": null, "class": ""}

    if(relation['resulttype'].classname == "publication") {
      researchResult['class'] = "publication";
    } else if(relation['resulttype'].classname == "dataset") {
      researchResult['class'] = "dataset";
    } else {
      researchResult['class'] = "software";
    }

    researchResult['id'] = relation['to'].content;
    let titleName = Array.isArray(relation['title']) ? relation['title'][0].content : relation['title'].content;
    researchResult['name'] = titleName;
    var date:string = ((Array.isArray(relation.dateofacceptance))?(relation.dateofacceptance[0]):(relation.dateofacceptance))+""; // transform to string in case it is an integer
    researchResult['date']  = (date && (date).indexOf('-') !== -1)?date.split('-')[0]:date;
    //researchResult['date'] = relation.dateofacceptance.substring(0,4);;
    researchResult['trust'] = Math.round(relation.trust*100);
    return researchResult;
  }

  // publication & dataset landing : for identifiers
  parseIdentifiers(pid: any): Map<string, string[]> {
    let identifiers = new Map<string, string[]>();

    if(pid.hasOwnProperty("classname") && pid['classname'] != "") {
      if(pid.classname == "doi" || pid.classname == "pmc" || pid.classname == "handle") {
        if(!identifiers.has(pid.classname)) {
          identifiers.set(pid.classname, new Array<string>());
        }

        identifiers.get(pid.classname).push(pid.content);
      }
    } else {
      for(let i=0; i<pid.length; i++) {
        if(pid[i].classname == "doi" || pid[i].classname == "pmc" || pid[i].classname == "handle") {
          if(!identifiers.has(pid[i].classname)) {
            identifiers.set(pid[i].classname, new Array<string>());
          }
          identifiers.get(pid[i].classname).push(pid[i].content);
        }
      }
    }
    return identifiers;
  }

  // publication & dataset landing : for subjects and otherSubjects and classifiedSubjects
  parseAllSubjects(_subjects: any): [string[], Map<string, string[]>, Map<string, string[]>] {
    let subjects: string[];
    let otherSubjects: Map<string, string[]>;
    let classifiedSubjects: Map<string, string[]>;

    let subject;
    let length = Array.isArray(_subjects) ? _subjects.length : 1;

    for(let i=0; i<length; i++) {
      subject = Array.isArray(_subjects) ? _subjects[i] : _subjects;
      if(subject.classid != "") {
        if(subject.inferred && subject.inferred == true) {
          if(classifiedSubjects == undefined) {
            classifiedSubjects = new Map<string, string[]>();
          }

          if(!classifiedSubjects.has(subject.classname)) {
            classifiedSubjects.set(subject.classname, new Array<string>());
          }

          classifiedSubjects.get(subject.classname).push(subject.content);
        } else {
          if(subject.classid == "keyword") {
            if(subjects == undefined) {
              subjects = new Array<string>();
            }

            subjects.push(subject.content);
          } else {
            if(otherSubjects == undefined) {
              otherSubjects = new Map<string, string[]>();
            }

            if(!otherSubjects.has(subject.classname)) {
              otherSubjects.set(subject.classname, new Array<string>());
            }
            otherSubjects.get(subject.classname).push(subject.content);
          }
        }
      }
    }
    return [subjects, otherSubjects, classifiedSubjects];
  }

  parseContexts(_contexts: any): {"labelContext": string, "labelCategory": string,
                                  "labelConcept": string, inline:boolean}[] {
    let contexts = new Array<{"labelContext": string, "labelCategory": string,
                              "labelConcept": string, inline:boolean}>();

    let position = 0;
    let labels = "";
    let context;
    let length = Array.isArray(_contexts) ? _contexts.length : 1;
    for(let i=0; i<length; i++) {
      context = Array.isArray(_contexts) ? _contexts[i] : _contexts;

      if(context.hasOwnProperty("type") && context['type'] == "community") {
        if(context.hasOwnProperty("category")) {
          if(context['category'].hasOwnProperty("concept")) {
            let categoryConcept;
            let length1 = Array.isArray(context['category']['concept']) ? context['category']['concept'].length : 1;
            for(let j=0; j<length1; j++) {
              categoryConcept = Array.isArray(context['category']['concept']) ? context['category']['concept'][j] : context['category']['concept'];

              contexts[position] = {"labelContext": "", "labelCategory": "", "labelConcept": "", inline: false };
              contexts[position]['labelContext'] = context.label;
              contexts[position]['labelCategory'] = context['category'].label;
              contexts[position]['labelConcept'] = categoryConcept.label;

              position++;
            }
          } else {
            contexts[position] = {"labelContext": "", "labelCategory": "", "labelConcept": "", inline: false};
            contexts[position]['labelContext'] = context.label;
            contexts[position]['labelCategory'] = context['category'].label;
            contexts[position]['labelConcept'] = null;
          }
        } else {
          contexts[position] = {"labelContext": "", "labelCategory": "", "labelConcept": "", inline: false};
          contexts[position]['labelContext'] = context.label;
          contexts[position]['labelCategory'] = null;
          contexts[position]['labelConcept'] = null;
          contexts[position]['new'] = false;
        }
      }
    }
    return contexts;
  }

  parseTypes(types: string[], uniqueTypes: Set<string>, instance: any) {
    if(instance.hasOwnProperty("instancetype") && instance['instancetype'].classname) {
      if(!uniqueTypes.has(instance['instancetype'].classname)) {
        types.push(instance['instancetype'].classname);
        uniqueTypes.add(instance['instancetype'].classname);
      }
    }
  }

  parseLanguages(_languages: any) {
    var languages = new Array<string>();

    if(!Array.isArray(_languages)) {
      if(_languages.classname != "Undetermined" && _languages.classname) {
        languages.push(_languages.classname);
      }
    } else {
      for(let i=0; i<_languages.length; i++) {
        if(_languages[i].classname != "Undetermined" && _languages[i].classname) {
          languages.push(_languages[i].classname);
        }
      }
    }
    return languages;
  }
}