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

import { ParsingFunctions } from '../landing-utils/parsingFunctions.class';

@Injectable()
export class ProjectService {

    constructor(private http: Http ) {
      this.parsingFunctions = new ParsingFunctions();
    }

    public parsingFunctions: ParsingFunctions;
    projectInfo: ProjectInfo;

    getProjectInfo (id: string, properties:EnvProperties):any {
        console.info("getProjectInfo in service");

        let url = properties.searchAPIURLLAst + 'projects/'+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']['oaf:project'])
                    .map(res => [res,
                                 res['fundingtree'],
                                 res['rels']['rel']])
                    .map(res => this.parseProjectInfo(res, properties));

    }

    /*
    get project strtDate and endDate
    */
    getProjectDates (id: string, properties:EnvProperties):any {

        let url = properties.searchAPIURLLAst+'projects/'+id+"?format=json";
        let key = url+'_projectDates';

        return this.http.get((properties.useCache)? (properties.cacheUrl+encodeURIComponent(url)): url)
                    .map(res => <any> res.json())
                    .map(res => res['result']['metadata']['oaf:entity']['oaf:project'])
                    .map(res => [res,
                              res['fundingtree'],
                              res['rels']['rel']])
                    .map(res => this.parseProjectDates(id,res))

    }

    getHTMLInfo(id: string, properties:EnvProperties): any {
        let url = properties.searchAPIURLLAst + 'projects/'+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']['oaf:project'])
                    .map(res => this.parseHTMLInfo(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');
    }

    parseHTMLInfo (data: any):any {
        let htmlInfo: {"title": string, "acronym": string, "callIdentifier": string};

        if(data != null) {
            htmlInfo = {"title": data.title, "acronym": data.acronym, "callIdentifier": data.callidentifier};
        }
        return htmlInfo;
    }

    parseProjectInfo (data: any, properties:EnvProperties):any {
        this.projectInfo = new ProjectInfo();

        if(data[0] != null) {
            this.projectInfo.acronym = data[0].acronym;
            if(Array.isArray(data[0]['title'])) {
                this.projectInfo.title = data[0].title[0];
            } else {
                this.projectInfo.title = data[0].title;
            }
            this.projectInfo.callIdentifier = data[0].callidentifier;
            this.projectInfo.contractNum = data[0].code;
            this.projectInfo.startDate = data[0].startdate;
            this.projectInfo.endDate = data[0].enddate;
            this.projectInfo.openAccessMandate = data[0].oamandatepublications;
            this.projectInfo.specialClause39 = data[0].ecsc39;
        }
        if(data[1] != null) {
          /*
            if(data[1]['funder'] != null) {
                this.projectInfo.funder = data[1]['funder'].shortname;
            }

            let funding;
            this.projectInfo.funding = "";

            if(data[1]['funding_level_2'] != null) {
                funding = data[1]['funding_level_2'].id;
            } else if(data[1]['funding_level_1'] != null) {
                funding = data[1]['funding_level_1'].id;
            } else if(data[1]['funding_level_0'] != null) {
                funding = data[1]['funding_level_0'].id;
            }

            if(funding != undefined) {
                funding = funding.split("::");
                for(let i=1; i<funding.length; i++) {
                    if(this.projectInfo.funding != "") {
                        this.projectInfo.funding += " | ";
                    }
                    this.projectInfo.funding += funding[i];
                }
            }
            */

            let funding: {"funderName": string, "funderShortname": string, "stream": string};
            funding = this.parsingFunctions.parseFundingTrees(data[1]);

            // if(funding.funderName) {
            //   this.publicationInfo.fundedByProjects[counter]['funderName'] = funding.funderName;
            // }
            if(funding.funderShortname) {
              this.projectInfo.funder = funding.funderShortname;
            }
            if(funding.stream) {
              this.projectInfo['funding'] = funding.stream;
            }
        }

        if(data[2] != null) {
            this.projectInfo.organizations = [];//new Map<string, string>();

            let acronym: string = "";
            let name: string = "";
            let id: string = "";

            if(!Array.isArray(data[2])) {
                if(data[2].hasOwnProperty("legalshortname")) {
                  acronym = data[2].legalshortname;
                }
                if(data[2].hasOwnProperty("legalname")) {
                  name = data[2].legalname;
                }
                if(!acronym && !name){
                  // acronym is displayed with link and name only in tooltip
                  acronym = "[no title available]";
                }

                if(data[2].hasOwnProperty("to")) {
                    id = data[2]['to'].content;
                }

                this.projectInfo.organizations.push({"acronym": acronym, "name": name, "id": id});
            } else {
                for(let i=0; i<data[2].length; i++) {
                    if(data[2][i].hasOwnProperty("to") && data[2][i]['to'].class == "hasParticipant") {
                        if(data[2][i].hasOwnProperty("legalshortname")) {
                          acronym = data[2][i].legalshortname;
                        }
                        if(data[2][i].hasOwnProperty("legalname")) {
                          name = data[2][i].legalname;
                        }
                        if(!acronym && !name){
                          acronym = "[no title available]";
                        }

                        if(data[2][i].hasOwnProperty("to")) {
                            id = data[2][i]['to'].content;
                        }

                        this.projectInfo.organizations.push({"acronym": acronym, "name": name, "id": id});
                    }
                }
            }
        }

        if(this.projectInfo.funder == "EC") {
            this.projectInfo.url = properties.cordisURL+this.projectInfo.contractNum;
            this.projectInfo.urlInfo = "Detailed project information (CORDIS)";
        }

        return this.projectInfo;

    }

    parseProjectDates (id: string, data: any):any {
        var project = { id: id, startDate: "", endDate: ""};
        if(data[0] != null) {
            project.startDate = data[0].startdate;
            project.endDate = data[0].enddate;
        }
        return project;

    }

}