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Add threading algorithm

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This commit is contained in:
Jackie Luo 2016-06-23 15:44:03 -07:00
parent f9fe836899
commit b6f57f3ce8
1 changed files with 71 additions and 62 deletions
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133
packages/nylas-message-processor/processors/threading.js
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@ -1,66 +1,5 @@
const {DatabaseConnector} = require('nylas-core')
function cleanSubject(subject) {
if (subject === null) {
return ""
}
const regex = new RegExp(/^((re|fw|fwd|aw|wg|undeliverable|undelivered):\s*)+/ig)
const cleanedSubject = subject.replace(regex, () => "")
return cleanedSubject
}
function getThreadFromReferences({db, references}) {
const {Message} = db
const messageId = references.split()[references.length - 1]
return Message.find({where: {messageId: messageId}})
.then((message) => {
return message.getThread()
})
}
function matchThread({db, message}) {
const {Thread} = db
if (message.headers.references) {
return getThreadFromReferences()
.then((thread) => {
if (thread) {
return thread
}
return Thread.create({
subject: message.subject,
cleanedSubject: cleanSubject(message.subject),
})
})
}
return Thread.create({
subject: message.subject,
cleanedSubject: cleanSubject(message.subject),
})
}
function addMessageToThread({db, accountId, message}) {
const {Thread} = db
// Check for Gmail's own thread ID
if (message.headers['X-GM-THRID']) {
return Thread.find({where: {threadId: message.headers['X-GM-THRID']}})
}
return matchThread({db, accountId, message})
.then((thread) => (thread))
}
function processMessage({message, accountId}) {
return DatabaseConnector.forAccount(accountId)
.then((db) => addMessageToThread({db, accountId, message}))
.then((thread) => {
thread.addMessage(message)
message.setThread(thread)
return message
})
}
// TODO: Incorporate this more elaborate threading algorithm
/*
function fetchCorrespondingThread({db, accountId, message}) {
const cleanedSubject = cleanSubject(message.subject)
return getThreads({db, message, cleanedSubject})
@ -153,7 +92,77 @@ function isSentToSelf({message, match}) {
matchFrom === matchTo &&
messageTo === matchFrom)
}
*/
function cleanSubject(subject) {
if (subject === null) {
return ""
}
const regex = new RegExp(/^((re|fw|fwd|aw|wg|undeliverable|undelivered):\s*)+/ig)
const cleanedSubject = subject.replace(regex, () => "")
return cleanedSubject
}
function getThreadFromReferences({db, references}) {
const {Message} = db
const messageId = references.split()[references.length - 1]
return Message.find({where: {messageId: messageId}})
.then((message) => {
return message.getThread()
})
}
function matchThread({db, accountId, message}) {
const {Thread} = db
if (message.headers.references) {
return getThreadFromReferences()
.then((thread) => {
if (thread) {
return thread
}
return fetchCorrespondingThread({db, accountId, message})
.then((thread) => {
if (thread) {
return thread
}
return Thread.create({
subject: message.subject,
cleanedSubject: cleanSubject(message.subject),
})
})
})
}
return fetchCorrespondingThread({db, accountId, message})
.then((thread) => {
if (thread) {
return thread
}
return Thread.create({
subject: message.subject,
cleanedSubject: cleanSubject(message.subject),
})
})
}
function addMessageToThread({db, accountId, message}) {
const {Thread} = db
// Check for Gmail's own thread ID
if (message.headers['X-GM-THRID']) {
return Thread.find({where: {threadId: message.headers['X-GM-THRID']}})
}
return matchThread({db, accountId, message})
.then((thread) => (thread))
}
function processMessage({message, accountId}) {
return DatabaseConnector.forAccount(accountId)
.then((db) => addMessageToThread({db, accountId, message}))
.then((thread) => {
thread.addMessage(message)
message.setThread(thread)
return message
})
}
module.exports = {
order: 1,