// require('dotenv').config();

const nodemailer = require('nodemailer');
const fsm = require('fsm-sdk');


const emailClient = nodemailer.createTransport({
    service: 'gmail',
    auth: {
        user: process.env.email_from,
        pass: process.env.email_password // set a app password for gmail
    }
});

const fsmClient = new fsm.CoreAPIClient({
    debug: false,
    clientVersion: '0.0.1',
    clientIdentifier: process.env.fsm_client_identifier,
    clientSecret: process.env.fsm_client_secret,
    authAccountName: process.env.fsm_auth_accountname,
    authUserName: process.env.fsm_auth_username,
    authPassword: process.env.fsm_auth_password
});

async function getById(resourceName, resourceId) {
    return fsmClient.getById(resourceName, resourceId)
        .then(r => {
            const alias = resourceName.split('')
                .reduce((word, char, idx) => `${word}${(idx === 0 ? char.toLowerCase() : char)}`, '');
            const it = r.data[0][alias];
            // console.log(alias, JSON.stringify(it, null, 2));
            return it;
        });
}

async function sendMail(params) {
    return new Promise((ok, fail) => {
        try {
            // console.log(`sendMail, ${JSON.stringify(params)}`);
            const { to, subject, html } = params;
            emailClient.sendMail({ to, subject, html, from: process.env.email_from }, (error, info) => {
                if (error)
                    fail(error);
                else
                    ok(info.response);
            });
        } catch (error) {
            fail(error);
        }
    });
}

async function main(id) {

    const activity = await getById('Activity', id);
    console.log('activity', activity.subject, activity.remarks)

    const bp = await getById('BusinessPartner', activity.businessPartner);
    console.log('businessPartner', bp.emailAddress, bp.name);

    const technician = await getById('UnifiedPerson', activity.responsibles[0]);
    console.log('technician', technician.firstName, technician.lastName)


    await sendMail({
        to: bp.emailAddress,
        subject: '[Edufy] Response from the helper crowd',
        html: [
            `Hi <strong>${bp.name}</strong>`,
            ``,
            `your question:`,
            `<pre>"${activity.subject}"</pre>`,
            ``,
            `${technician.firstName} ${technician.lastName} answered:`,
            `<pre>"${activity.remarks}"</pre>`
        ].join('<BR/>')
    });

}

// add trigger CS BR that triggers
// when [ServiceCheckout] is created
// context:
// activity => activity.id IN ${serviceCheckout.activities}
// conditions:
// ${activity.remarks} != null
// trigger web-hook with
// body => { "id":"${activity.id}" }
// read event.data.id
(async (event, context) => {

    try {
        await main('148774D1B48C4294B689F12FE6C98CBE'); // event.data.id here
    } catch (error) {
        console.error(error);
    }

})()