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/**
* @copyright 2018 Christoph Wurst <christoph@winzerhof-wurst.at>
*
* @author 2018 Christoph Wurst <christoph@winzerhof-wurst.at>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
import moment from '@nextcloud/moment'
import negate from 'lodash/fp/negate'
import { html } from './util/text'
/**
* @param {Text} original original
* @param {object} from from
* @param {Number} date date
* @param {boolean} replyOnTop put reply on top?
* @returns {Text}
*/
export const buildReplyBody = (original, from, date, replyOnTop = true) => {
const startEnd = '<p></p><p></p>'
const plainBody = '<br>> ' + original.value.replace(/\n/g, '<br>> ')
const htmlBody = `<blockquote>${original.value}</blockquote>`
const quoteStart = '<div class="quote">'
const quoteEnd = '</div>'
switch (original.format) {
case 'plain':
if (from) {
const dateString = moment.unix(date).format('LLL')
return replyOnTop
? html(`${startEnd}${quoteStart}"${from.label}" ${from.email} – ${dateString}` + plainBody + quoteEnd)
: html(`${quoteStart}"${from.label}" ${from.email} – ${dateString}` + plainBody + quoteEnd + startEnd)
} else {
return replyOnTop
? html(`${startEnd}${quoteStart}${plainBody}${quoteEnd}`)
: html(`${quoteStart}${plainBody}${quoteEnd}${startEnd}`)
}
case 'html':
if (from) {
const dateString = moment.unix(date).format('LLL')
return replyOnTop
? html(`${startEnd}${quoteStart}"${from.label}" ${from.email} – ${dateString}<br>${htmlBody}${quoteEnd}`)
: html(`${quoteStart}"${from.label}" ${from.email} – ${dateString}<br>${htmlBody}${quoteEnd}${startEnd}`)
} else {
return replyOnTop
? html(`${startEnd}${quoteStart}${htmlBody}${quoteEnd}`)
: html(`${quoteStart}${htmlBody}${quoteEnd}${startEnd}`)
}
}
throw new Error(`can't build a reply for the format ${original.format}`)
}
const RecipientType = Object.seal({
None: 0,
To: 1,
Cc: 2,
})
export const buildRecipients = (envelope, ownAddress) => {
let recipientType = RecipientType.None
const isOwnAddress = (a) => a.email === ownAddress.email
const isNotOwnAddress = negate(isOwnAddress)
// Locate why we received this envelope
// Can be in 'to', 'cc' or unknown
let replyingAddress = envelope.to.find(isOwnAddress)
if (replyingAddress !== undefined) {
recipientType = RecipientType.To
} else {
replyingAddress = envelope.cc.find(isOwnAddress)
if (replyingAddress !== undefined) {
recipientType = RecipientType.Cc
} else {
replyingAddress = ownAddress
}
}
let to = []
let cc = []
if (recipientType === RecipientType.To) {
// Send to everyone except yourself, plus the original sender if not ourself
to = envelope.to.filter(isNotOwnAddress)
to = to.concat(envelope.from.filter(isNotOwnAddress))
// CC remains the same
cc = envelope.cc
} else if (recipientType === RecipientType.Cc) {
// Send to the same people, plus the sender if not ourself
to = envelope.to.concat(envelope.from.filter(isNotOwnAddress))
// All CC values are being kept except the replying address
cc = envelope.cc.filter(isNotOwnAddress)
} else {
// Send to the same recipient and the sender (if not ourself) -> answer all
to = envelope.to
to = to.concat(envelope.from.filter(isNotOwnAddress))
// Keep CC values
cc = envelope.cc
}
// edge case: pure self-sent email
if (to.length === 0) {
to = envelope.from
}
return {
to,
from: replyingAddress ? [replyingAddress] : [],
cc,
}
}
const replyPrepends = [
'antw',
'atb',
'aw',
'bls',
'odp',
'r',
're',
'ref',
'res',
'rif',
'sv',
'vá',
'vs',
'ynt',
'απ',
'σχετ',
'השב',
'回复',
'回覆',
]
/*
* Ref https://tools.ietf.org/html/rfc5322#section-3.6.5
*/
export const buildReplySubject = (original) => {
if (replyPrepends.some((prepend) => original.toLowerCase().startsWith(`${prepend}:`))) {
return original
}
return `Re: ${original}`
}
// TODO: https://en.wikipedia.org/wiki/List_of_email_subject_abbreviations#Abbreviations_in_other_languages
const forwardPrepends = [
'doorst',
'enc',
'fs',
'fw',
'fwd',
'i',
'i̇lt',
'pd',
'rv',
'továbbítás',
'tr',
'trs',
'vb',
'vl',
'vs',
'wg',
'yml',
'ΠΡΘ',
'הועבר',
'إعادة توجيه',
'رد',
'轉寄',
'转发',
]
export const buildForwardSubject = (original) => {
if (forwardPrepends.some((prepend) => original.toLowerCase().startsWith(`${prepend}:`))) {
return original
}
return `Fwd: ${original}`
}
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