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sync flags on server start

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grimhilt
2023-04-17 13:08:54 +02:00
parent 0f063deff9
commit cd996d851a
3 changed files with 64 additions and 19 deletions
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54
back/mails/imap/Mailbox.ts
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@@ -1,5 +1,5 @@
import Imap, { ImapMessageAttributes, Box } from "imap";
import { getMailbox, updateMailbox } from "../../db/imap/imap-db";
import { getMailbox, getMailboxModseq, updateMailbox, updateMailboxModseq } from "../../db/imap/imap-db";
import { Attrs, AttrsWithEnvelope } from "../../interfaces/mail/attrs.interface";
import logger from "../../system/Logger";
import RegisterMessageInApp from "../message/saveMessage";
@@ -33,29 +33,25 @@ export default class Mailbox {
async init() {
// get mailbox from the database
this.box = (await getMailbox(this.id))[0];
const isReadOnly = false;
this.imap.openBox(this.boxName, isReadOnly, (err, box) => {
if (err) logger.err(err);
// sync only if has new messages
if (this.box.uidnext < box.uidnext) {
this.sync(this.box.uidnext, box.uidnext);
} else {
logger.log("Already up to date");
}
// sync messages and flags
this.initSync(box);
// wait for new mails
this.imap.on("mail", (numNewMsgs: number) => {
if (!this.syncing) {
// if not syncing restart a sync
this.sync(this.box.uidnext, this.box.uidnext + numNewMsgs);
this.syncMail(this.box.uidnext, this.box.uidnext + numNewMsgs);
} else {
// else save number of message to sync latter
this.msgToSync += numNewMsgs;
}
});
// wait for flags update
this.imap.on("update", (seqno: number, info: ImapInfo) => {
logger.log(`Update message ${info.uid} with ${info.flags}`);
const updateMsg = new updateMessage(info.uid, info.flags);
@@ -64,7 +60,43 @@ export default class Mailbox {
});
}
async sync(savedUid: number, currentUid: number) {
async updateModseq(newModseq: number) {
updateMailboxModseq(this.id, newModseq).then(() => {
this.box.highestmodseq = newModseq;
});
}
async initSync(box: Box) {
// sync mail only if has new messages
if (this.box.uidnext < box.uidnext) {
this.syncMail(this.box.uidnext, box.uidnext);
} else {
logger.log("Mail already up to date");
}
// sync flags
const lastModseq = (await getMailboxModseq(this.id))[0]?.modseq ?? 0;
if (box.highestmodseq > lastModseq) {
const fetchStream = this.imap.fetch("1:*", { bodies: "", modifiers: { changedsince: lastModseq } });
fetchStream.on("message", (message) => {
message.once("attributes", (attrs) => {
const updateMsg = new updateMessage(attrs.uid, attrs.flags);
updateMsg.updateFlags();
});
});
fetchStream.once("error", function (err) {
logger.err("Fetch error when syncing flags: " + err);
});
fetchStream.once("end", function () {
logger.log("Done fetching new flags");
});
} else {
logger.log("Flags already up to date")
}
this.updateModseq(box.highestmodseq);
}
async syncMail(savedUid: number, currentUid: number) {
this.syncing = true;
const promises: Promise<unknown>[] = [];
const mails: Attrs[] = [];
@@ -113,7 +145,7 @@ export default class Mailbox {
this.box.uidnext += this.msgToSync;
// reset value to allow to detect new incoming message while syncing
this.msgToSync = 0;
this.sync(currentUid, this.box.uidnext);
this.syncMail(currentUid, this.box.uidnext);
}
});
}