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import { ChildProcess } from 'child_process'
import MailDev from 'maildev'
import { randomInt } from '@shared/core-utils'
import { parallelTests } from '../miscs'
class MockSmtpServer {
private static instance: MockSmtpServer
private started = false
private emailChildProcess: ChildProcess
private emails: object[]
private constructor () { }
collectEmails (emailsCollection: object[]) {
return new Promise<number>((res, rej) => {
const port = parallelTests() ? randomInt(1000, 2000) : 1025
this.emails = emailsCollection
if (this.started) {
return res(undefined)
}
const maildev = new MailDev({
ip: '127.0.0.1',
smtp: port,
disableWeb: true,
silent: true
})
maildev.on('new', email => {
this.emails.push(email)
})
maildev.listen(err => {
if (err) return rej(err)
this.started = true
return res(port)
})
})
}
kill () {
if (!this.emailChildProcess) return
process.kill(this.emailChildProcess.pid)
this.emailChildProcess = null
MockSmtpServer.instance = null
}
static get Instance () {
return this.instance || (this.instance = new this())
}
}
// ---------------------------------------------------------------------------
export {
MockSmtpServer
}
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