import { Opt } from "../../new_fields/Doc";

const NaturalLanguageUnderstandingV1 = require('ibm-watson/natural-language-understanding/v1');
const { IamAuthenticator } = require('ibm-watson/auth');

export namespace IBM_Recommender {

    // pass to IBM account is Browngfx1

    const naturalLanguageUnderstanding = new NaturalLanguageUnderstandingV1({
        version: '2019-07-12',
        authenticator: new IamAuthenticator({
            apikey: 'tLiYwbRim3CnBcCO4phubpf-zEiGcub1uh0V-sD9OKhw',
        }),
        url: 'https://gateway-wdc.watsonplatform.net/natural-language-understanding/api'
    });

    const analyzeParams = {
        'text': 'this is a test of the keyword extraction feature I am integrating into the program',
        'features': {
            'keywords': {
                'sentiment': true,
                'emotion': true,
                'limit': 3
            },
        }
    };

    export const analyze = async (_parameters: any): Promise<Opt<string>> => {
        try {
            const response = await naturalLanguageUnderstanding.analyze(_parameters);
            console.log(response);
            return (JSON.stringify(response, null, 2));
        } catch (err) {
            console.log('error: ', err);
            return undefined;
        }
    };

}