D-Net

import { Injectable } from "@angular/core";

import { JsonldDocument, Identifier, Person, License, Citation, Dataset, Organization } from "../model/jsonld-document";

import * as _ from "lodash";

@Injectable()

export class OpenAireJsonldConverterService {

	constructor() { }

	createHome(name, URL, logoURL): any {

		const buffer = {};

		buffer["@context"] = "http://schema.org";

		buffer["@type"] = "Organization";

		buffer["name"] = name;

		buffer["url"] = URL;

		buffer["logo"] = logoURL;

		const action ={};

		action["@type"]= "SearchAction";

		action["target"]= URL+"/search/find/?keyword={search_term_string}";

		action["query-input"]= "required name=search_term_string";

		buffer["potentialAction"] = action;

		const sameAs =["https://www.openaire.eu",

		"https://www.facebook.com/groups/openaire/",

		"https://www.twitter.com/OpenAIRE_eu",

		"https://www.linkedin.com/groups/OpenAIRE-3893548",

		"https://www.slideshare.net/OpenAIRE_eu",

		"https://www.youtube.com/channel/UChFYqizc-S6asNjQSoWuwjw"];

		buffer["sameAs"] = sameAs;

		return buffer;

	}

	createSearchPage(name, URL, logoURL): any {

		const buffer = {};

		buffer["@context"] = "http://schema.org";

		buffer["@type"] = "Organization";

		buffer["name"] = name;

		buffer["url"] = URL;

		buffer["logo"] = logoURL;

		const action ={};

		action["@type"]= "SearchAction";

		action["target"]= URL+"?keyword={search_term_string}";

		action["query-input"]= "required name=search_term_string";

		buffer["potentialAction"] = action;

		return buffer;

	}

	convertResult(result: any, URL): Dataset {

		const doc = new Dataset();

		doc.title = this.getTitle(result);

		doc.headline = doc.title;

		if(this.getSubTitle(result)){

			doc.alternativeHeadline = this.getSubTitle(result);

		}

		doc.issn = this.getISSN(result);

		doc.description = this.getDescription(result);

		doc.identifier = this.getIdentifier(result);

		doc.url = URL;

		doc.sameAs = this.getSameAs(result);

		doc.creator = this.getCreator(result);

		doc.dateCreated = this.getDateCreated(result);

		doc.citation = this.getCitation(result);

		doc.license = this.getLicense(result);

		doc.keyword = this.getKeyword(result);

		return doc;

	}

	convertProject(project: any, URL, otherUrl): Organization {

		const doc = new Organization();

		doc.title = (project.name)?project.title:project.acronym;

		doc.identifier = new Array<Identifier>();

		doc.identifier.push({id:project.contractNum, schema: "grantid"});

		var funder = new Organization();

		funder.title = project.funder;

		doc.funder = funder;

		doc.url = URL;

		doc.sameAs =[project.url]

		return doc;

}

convertOrganization(organization: any, URL): Organization {

	const doc = new Organization();

	doc.title =  organization.title.name ;

	doc.legalName = organization.name;

	doc.areaServed = organization.country;

	doc.url = URL;

	return doc;

}

convertDatasource(datasource: any, URL, otherUrl): Organization {

	const doc = new Organization();

	doc.title = datasource.title.name

	doc.identifier = datasource.contractNum;

	doc.legalName = datasource.officialName;

	if(datasource.countries && datasource.countries.length > 0){

		doc.areaServed = datasource.countries[0];

	}

	doc.url = URL;

	if(datasource.oaiPmhURL || otherUrl || datasource.title.url){

		doc.sameAs = [];

		if(otherUrl){

			doc.sameAs.push(otherUrl);

		}

		if(datasource.oaiPmhURL){

			doc.sameAs.push(datasource.oaiPmhURL);

		}

		if(datasource.title.url){

			doc.sameAs.push(datasource.title.url);

		}

	}

	return doc;

}

	private getTitle(result: any): String[] {

		const title = _.get(result, "result.metadata.oaf:entity.oaf:result.title", null);

		if(title && Array.isArray(title) ){

			return title[0].content;

		}else{

			return title.content;

		}

	}

	private getSubTitle(result: any): String[] {

		const title = _.get(result, "result.metadata.oaf:entity.oaf:result.title", null);

		if(title && Array.isArray(title) ){

			if(title[1] && title[1].classid == "subtitle") {

				return title[1].content;

			}

		}

		return null;

	}

	private getISSN(result: any): String[] {

		const item = _.get(result, "result.metadata.oaf:entity.oaf:result.journal.issn", null);

		if (!item) return null;

		return [item as String];

	}

	private getDescription(result: any): String[] {

		const item = _.get(result, "result.metadata.oaf:entity.oaf:result.description", null);

		if (!item) return null;

		return [item as String];

	}

	private getDateCreated(result: any): String[] {

		const item = _.get(result, "result.metadata.oaf:entity.oaf:result.dateofacceptance", null);

		if (!item) return null;

		return [item as String];

	}

	private getLicense(result: any): License[] {

		const item = _.get(result, "result.metadata.oaf:entity.oaf:result.bestaccessright", null);

		if (!item) return null;

		if (!_.has(item, "classid")) return null;

		if (!_.has(item, "classname")) return null;

		if (!_.has(item, "schemeid")) return null;

		return [{

			title: [_.get(item, "classname")],

			identifier: [{

				id: _.get(item, "classid"),

				schema: _.get(item, "schemeid")

			}]

		}];

	}

	private getIdentifier(result: any): Identifier[] {

		const item = _.get(result, "result.metadata.oaf:entity.oaf:result.pid", null);

		if (!item) return null;

		const array = new Array<Identifier>();

		if (Array.isArray(item)) {

			const itemArray = item as Array<any>;

			for (var i = 0; i < itemArray.length; i += 1) {

				const val = this.getSingleIdentifier(itemArray[i]);

				if (val) array.push(val);

			}

		}

		else {

			const val = this.getSingleIdentifier(item);

			if (val) array.push(val);

		}

		if (array.length == 0) return null;

		return array;

	}

	private getSingleIdentifier(item: any): Identifier {

		if (!_.has(item, "classname")) return null;

		if (!_.has(item, "content")) return null;

		return {

			schema: _.get(item, "classname"),

			id: _.get(item, "content")

		};

	}

	private getSameAs(result: any): String[] {

		const instances = _.get(result, "result.metadata.oaf:entity.oaf:result.children.instance", null);

		if (!instances) return null;

		if (!Array.isArray(instances)) return null;

		const array = new Array<String>();

		const instanceArray = instances as Array<any>;

		for (var i = 0; i < instanceArray.length; i += 1) {

			const webresources = _.get(instanceArray[i], "webresource", null);

			if (!webresources) continue;

			if (Array.isArray(webresources)) {

				const webresourceArray = webresources as Array<any>;

				for (var q = 0; q < webresourceArray.length; q += 1) {

					const url = _.get(webresourceArray[q], "url", null);

					if (!url) continue;

					array.push(url as String);

				}

			}

			else {

				const url = _.get(webresources, "url", null);

				if (!url) continue;

				array.push(url as String);

			}

		}

		if (array.length == 0) return null;

		return array;

	}

	private getKeyword(result: any): String[] {

		const subjects = _.get(result, "result.metadata.oaf:entity.oaf:result.subject", null);

		if (!subjects) return null;

		if (!Array.isArray(subjects)) return null;

		const array = new Array<String>();

		const subjectArray = subjects as Array<any>;

		for (var i = 0; i < subjectArray.length; i += 1) {

			const classid = _.get(subjectArray[i], "classid", null);

			if (classid !== "keyword") continue;

			const sub = _.get(subjectArray[i], "content", null);

			if (!sub) return null;

			array.push(sub as String);

		}

		if (array.length == 0) return null;

		return array;

	}

	private getCreator(result: any): Person[] {

		const item = _.get(result, "result.metadata.oaf:entity.oaf:result.creator", null);

		if (!item) return null;

		const array = new Array<Person>();

		if (Array.isArray(item)) {

			const itemArray = item as Array<any>;

			for (var i = 0; i < itemArray.length; i += 1) {

				const val = this.getSinglePerson(itemArray[i]);

				if (val) array.push(val);

			}

		}

		else {

			const val = this.getSinglePerson(item);

			if (val) array.push(val);

		}

		if (array.length == 0) return null;

		return array;

	}

	private getSinglePerson(item: any): Person {

		if (!_.has(item, "surname") && !_.has(item, "name") && !_.has(item, "content")) return null;

		return {

			familyName: _.get(item, "surname", null),

			givenName: _.get(item, "name", null),

			name: _.get(item, "content", null)

		};

	}

	private getCitation(result: any): Citation[] {

		const item = _.get(result, "result.metadata.oaf:entity.extraInfo.citations.citation", null);

		if (!item) return null;

		const array = new Array<Citation>();

		if (Array.isArray(item)) {

			const itemArray = item as Array<any>;

			for (var i = 0; i < itemArray.length; i += 1) {

				const val = this.getSingleCitation(itemArray[i]);

				if (val) array.push(val);

			}

		}

		else {

			const val = this.getSingleCitation(item);

			if (val) array.push(val);

		}

		if (array.length == 0) return null;

		return array;

	}

	private getSingleCitation(item: any): Citation {

		if (!_.has(item, "rawText")) return null;

		if (!_.has(item, "id")) return null;

		const array = new Array<Identifier>();

		const ids = _.get(item, "id", null);

		if (Array.isArray(ids)) {

			const idsArray = ids as Array<any>;

			for (var i = 0; i < idsArray.length; i += 1) {

				const type = _.get(idsArray[i], "type", null);

				const value = _.get(idsArray[i], "value", null);

				if (!type || !value) continue;

				array.push({

					id: value,

					schema: type

				});

			}

		}

		else {

			const type = _.get(ids, "type", null);

			const value = _.get(ids, "value", null);

			if (type && value) {

				array.push({

					id: value,

					schema: type

				});

			}

		}

		if (array.length == 0) return null;

		return {

			title: [_.get(item, "rawText")],

			identifier: array

		};

	}

}