import {Injectable} from '@angular/core';
import {Http, Response} from '@angular/http';
import {Observable}     from 'rxjs/Observable';
import {DataProviderInfo} from '../../utils/entities/dataProviderInfo';
import 'rxjs/add/observable/of';
import 'rxjs/add/operator/do';
import 'rxjs/add/operator/share';
import{EnvProperties} from '../../utils/properties/env-properties';


@Injectable()
export class DataProviderService {

    constructor(private http: Http ) {}

    dataProviderInfo: DataProviderInfo;

    getDataproviderInfo (id: string, properties:EnvProperties):any {
        console.info("getDataProviderInfo in service");
        let url = properties.searchAPIURLLAst + 'datasources/' +id +"?format=json";
        let key = url;

        return this.http.get((properties.useCache)? (properties.cacheUrl+encodeURIComponent(url)): url)
                    .map(res => <any> res.json())
                    .map(res => res['result']['metadata']['oaf:entity'])
                    .map(res => [res['oaf:datasource'],
                                 res['oaf:datasource']['datasourcetype'],
                                 res['oaf:datasource']['openairecompatibility'],
                                 res['oaf:datasource']['accessinfopackage'],
                                 res['oaf:datasource']['rels']['rel']
                     ])
                     .map(res => this.parseDataProviderInfo(res));

    }

    private handleError (error: Response) {
    // in a real world app, we may send the error to some remote logging infrastructure
    // instead of just logging it to the console
        console.log(error);
        return Observable.throw(error  || 'Server error');
    }

    parseDataProviderInfo (data: any):any {
        this.dataProviderInfo = new DataProviderInfo();

        if(data[0] != null) {
            this.dataProviderInfo.title = {"name": (data[0].englishname)?data[0].englishname: data[0].officialname, "url": data[0].websiteurl};
            this.dataProviderInfo.officialName =  data[0].officialname;
            var originalId =(data[0].originalId)?data[0].originalId:"";
            if(originalId && originalId != ""){
              if(originalId.indexOf("opendoar____::") != -1){
                this.dataProviderInfo.openDoarURL = "http://www.opendoar.org/find.php?format=full&rID="+originalId.split("opendoar____::")[1];

              }else if (originalId.indexOf("re3data_____::") != -1){
                this.dataProviderInfo.r3DataURL = "http://service.re3data.org/repository/"+originalId.split("re3data_____::")[1];
              }
            }

        }

        if(data[1] != null) {
            this.dataProviderInfo.type = data[1].classname;

            if(data[1].classid == "entityregistry" || data[1].classid == "entityregistry::projects" || data[1].classid == "entityregistry::repositories") {
                this.dataProviderInfo.registry = true;
            } else {
                this.dataProviderInfo.registry = false;
            }

            if(this.dataProviderInfo.tabs == undefined) {
                this.dataProviderInfo.tabs = new Array<{"name": string, "content": string}>();
            }

            if(this.dataProviderInfo.tabsInTypes.publicationsTab.has(data[1].classid)) {
                this.dataProviderInfo.tabs.push({"name": "Publications", "content": "publicationsTab"});
            }
            if(this.dataProviderInfo.tabsInTypes.datasetsTab.has(data[1].classid)) {
                this.dataProviderInfo.tabs.push({"name": "Research Data", "content": "datasetsTab"});
            }

            if(this.dataProviderInfo.tabsInTypes.projectsTab.has(data[1].classid)) {
                this.dataProviderInfo.tabs.push({"name": "Projects", "content": "projectsTab"});
            }
            if(this.dataProviderInfo.tabsInTypes.datasourcesTab.has(data[1].classid)) {
                this.dataProviderInfo.tabs.push({"name": "Content Providers", "content": "datasourcesTab"});
            }
            this.dataProviderInfo.tabs.push({"name": "Organizations", "content": "organizationsTab"});

            if(this.dataProviderInfo.tabsInTypes.relatedDatasourcesTab.has(data[1].classid)) {
                this.dataProviderInfo.tabs.push({"name": "Related Content Providers", "content": "relatedDatasourcesTab"});
            }

            if(this.dataProviderInfo.tabsInTypes.statisticsTab.has(data[1].classid)) {
                this.dataProviderInfo.tabs.push({"name": "Statistics", "content": "statisticsTab"});
            }

            this.dataProviderInfo.tabs.push({"name": "Metrics", "content": "metricsTab"});

            if(this.dataProviderInfo.resultTypes.collectedFrom.has(data[1].classid)) {
                this.dataProviderInfo.resultsBy = "collectedFrom";
            } else if(this.dataProviderInfo.resultTypes.hostedBy.has(data[1].classid)) {
                this.dataProviderInfo.resultsBy = "hostedBy";
            }
        }

        if(!this.dataProviderInfo.registry) {
            if(data[2] != null) {
                this.dataProviderInfo.compatibility = data[2].classname;
            }

            if(data[3] != null) {
                let oaiPmhURL: string;
                if(Array.isArray(data[3])) {
                    oaiPmhURL = data[3][0];
                }
                else {
                    oaiPmhURL = data[3];
                }

                if(oaiPmhURL != '' && oaiPmhURL != 'unknown') {
                    this.dataProviderInfo.oaiPmhURL = oaiPmhURL;
                }
            }
        }

        if(data[4] != null) {
            let mydata;
            let counter = 0;
            let countriesSet: Set<string>;
            let length = data[4].length!=undefined ? data[4].length : 1;

            for(let i=0; i<length; i++) {
                mydata = data[4].length!=undefined ? data[4][i] : data[4];
                if(mydata.hasOwnProperty("to")) {
                    if(mydata['to'].class == "provides" && mydata['to'].type == "organization") {
                        //if(this.dataProviderInfo.organizations == undefined) {
                        if(this.dataProviderInfo.organizations.length == 0) {
                            //this.dataProviderInfo.organizations = new Array<{"name": string, "url": string}>();
                            this.dataProviderInfo.countries = new Array<string>();
                            countriesSet = new Set<string>();
                        }

                        this.dataProviderInfo.organizations[counter] = {"name": "", "id": ""};
                        this.dataProviderInfo.organizations[counter]['name'] = mydata.legalname;
                        this.dataProviderInfo.organizations[counter]['id'] = mydata['to'].content;

                        if(mydata.country != '' && mydata['country'].classname != '') {
                            if(!countriesSet.has(mydata['country'].classname)) {
                                this.dataProviderInfo.countries.push(mydata['country'].classname);
                                countriesSet.add(mydata['country'].classname);
                            }
                        }

                        counter++;
                    }
                }
            }
        }

        return this.dataProviderInfo;
    }
}