'use strict'

/*
 * NOTE: This test ACTUALLY will send an email
 * (see commented out email variable below)
 */

// Change email here to your actual email
let email = undefined
// email = 'myalias@myactualemail.com'

const test = require('ava')
const { stub } = require('sinon')
const Hapi = require('@hapi/hapi')
const UserService = require('../lib/services/user.js')
const plugin = require('../lib/plugins/user.js')

// Necessary Dependencies/Configurations for Brevo Transac Email
const crypto = require('crypto')
const Brevo = require('@getbrevo/brevo')
const apiInstance = new Brevo.TransactionalEmailsApi()
const apiKey = apiInstance.apiClient.authentications['api-key']
apiKey.apiKey = process.env.BREVO_KEY
const sendSmtpEmail = new Brevo.SendSmtpEmail()

// Existing activeSession to test against (should not match)
const activeSessions = {
    'a;lsdkfja;ldfjka;ldfja;lskjdfa;dfjk': {
        email: 'test@testemail.com',
        name: 'john_doe',
        seeking: 'position',
        sessionToken: 'efasdf;laksdfja;lkdjfa;lkdjf',
        expiration: Date.now() + 600000,
        emailWasRespondedTo: false,
        accessToken: null,
    },
}

let hashedSessionToken = ''

const payload = {
    email: email,
    name: 'fk',
    seeking: 'seeker',
    sessionToken: 'a;slkdjfa;lskdf;asjkdfl;asdf;klj',
}

const userCredentials = payload

const pathToTest = {
    method: 'POST',
    url: '/send-email/',
    payload: JSON.stringify(payload),
}

test('path /send-email should send test transac email', async t => {
    /* If email is left undefined, simply pass the test */
    if (!email) {
        t.log('no actual email was given, bypassing test...')
        return t.pass()
    }
    /**
     * Create a new server and register services,
     * models and routes for testing
     */
    const server = Hapi.server()
    server.registrations = {
        'main-app-plugin': {
            options: {},
        },
    }

    /**
     * Register Services
     */
    await plugin.register(server)
    server.services()['userService'] = new UserService(server)
    server.services()['userService']['activeSessions'] = activeSessions

    const hashToken = token => {
        const salt = process.env.APP_SESSION_SALT
        try {
            return crypto.createHmac('sha256', salt).update(token).digest('hex')
        } catch (err) {
            throw new Error(err.message)
        }
    }

    hashedSessionToken = Object.keys(activeSessions).find(hashedToken => {
        return activeSessions[`${hashedToken}`].email === userCredentials.email
    })
    /**
     * Sends a Transactional Email via Brevo
     * @ returns {Object}
     */
    const emailSent = async userCredentials => {
        hashedSessionToken = hashToken(userCredentials.sessionToken)
        if (Object.keys(activeSessions).includes(hashedSessionToken)) {
            return new Error('session already in cache!!')
        }
        // Set expiration time for ten minutes from now
        const duration = 600000

        activeSessions[hashedSessionToken] = {
            email: userCredentials.email,
            name: userCredentials.name,
            seeking: userCredentials.seeking,
            sessionToken: userCredentials.sessionToken,
            expiration: Date.now() + duration,
            emailWasRespondedTo: false,
            accessToken: null,
        }
        sendSmtpEmail.sender = {
            name: 'My Test Company',
            email: 'mytestemail@email.com',
        }
        sendSmtpEmail.subject = 'My Test Company'
        sendSmtpEmail = {
            to: [
                {
                    email: userCredentials.email,
                },
            ],
        }
        sendSmtpEmail.templateId = Number(process.env.BREVO_TEMPLATE_ID)
        sendSmtpEmail.params = {
            link: `${process.env.BREVO_LINK}/verify/${hashedSessionToken}`,
        }
        return await apiInstance.sendTransacEmail(sendSmtpEmail).then(
            data => {
                return { wasSuccessfull: true, data: data }
            },
            error => {
                return { wasSuccessfull: false, error: error }
            },
        )
    }

    stub(server.services()['userService'], 'emailSent').returns(
        await emailSent(userCredentials),
    )

    const mockReturn = {
        emailSentSuccessfully: true,
        hashedSessionToken,
    }

    /**
     * Test the server with registered models and services
     */
    const { payload } = await server.inject(pathToTest)
    const res = JSON.parse(payload)
    t.deepEqual(res.ok, true)
    t.deepEqual(res.data, mockReturn)
    server.stop()
})