import { TaxonomyServiceInterface } from '@vendasta/taxonomy-service';
import { Injectable } from '@angular/core';
import { Observable } from 'rxjs/Observable';
import { TAXONOMY_OPTIONS } from './taxonomy.data';
import { TaxonomyOption } from '../../src/services/taxonomy-service/interfaces';

@Injectable()
export class TaxonomyService implements TaxonomyServiceInterface {
    getTaxonomyIds(): Observable<TaxonomyOption[]> {

        return Observable.of(TAXONOMY_OPTIONS.map(category => this.buildOption(category)));
    }

    buildOption(category: any) {
        let fullNameParts = [];
        let idParts = category.id.split(':');
        if (idParts.length > 1) {
            // Work through all the sub-ids (ie. recreation:diving:deepsea would get recreation and recreation:diving)
            for (let i = 0; i < idParts.length - 1; i++) {
                let partOpt = TAXONOMY_OPTIONS.find(opt => opt.id === idParts.slice(0, i + 1).join(':'));
                fullNameParts.push(partOpt.name);
            }
        }
        fullNameParts.push(category.name);
        return {
            name: fullNameParts.join(' > '),
            id: category.id
        };
    }
}