link imap sync to server and show email on front

back/mails/imap/Box.js

@@ -0,0 +1,59 @@
+const { getMailbox, updateMailbox } = require("../../db/imap/imap");
+const { DEBUG } = require("../../utils/debug");
+const { registerMessageInApp } = require("../saveMessage");
+const { saveMessage } = require("../storeMessage");
+
+class Box {
+    constructor(_imap, boxId, _boxName) {
+        this.imap = _imap;
+        this.boxName = _boxName;
+        this.id = boxId;
+        this.box;
+        this.init();
+    }
+
+    async init() {
+        this.box = (await getMailbox(this.id))[0];
+
+        const readOnly = true;
+        this.imap.openBox(this.boxName, readOnly, (err, box) => {
+            if (err) DEBUG.log(err);
+            this.sync(this.box.uidnext, box.uidnext);
+        });
+    }
+
+    sync(savedUid, currentUid) {
+        const promises = [];
+        const mails = [];
+        console.log(savedUid, currentUid);
+        const f = this.imap.seq.fetch(`${savedUid}:${currentUid}`, {
+            size: true,
+            envelope: true,
+        });
+
+        f.on("message", (msg, seqno) => {
+            msg.once("attributes", (attrs) => {
+                mails.push(attrs);
+                promises.push(saveMessage(attrs, this.id, this.imap));
+            });
+        });
+
+        f.once("error", (err) => {
+            DEBUG.log("Fetch error: " + err);
+        });
+
+        f.once("end", async () => {
+            await Promise.all(promises).then(async (res) => {
+                for (let i = 0; i < mails.length; i++) {
+                    console.log(i, mails[i].uid)
+                    await registerMessageInApp(res[i], mails[i]);
+                }
+            });
+            updateMailbox(this.id, currentUid);
+        });
+    }
+}
+
+module.exports = {
+    Box,
+};

back/mails/imap/ImapInstance.js

@@ -0,0 +1,73 @@
+const Imap = require("imap");
+const { getAllMailboxes, registerMailbox } = require("../../db/imap/imap");
+const { DEBUG } = require("../../utils/debug");
+const { Box } = require("./Box");
+
+class ImapInstance {
+    constructor(account) {
+        this.imap = new Imap({
+            user: account.user,
+            password: account.password,
+            tlsOptions: { servername: account.host },
+            host: account.host,
+            port: account.port,
+            tls: account.tls,
+        });
+    
+        this.account = account;
+        this.boxes = [];
+
+        /**
+         * IMAP
+         */
+        this.imap.once("ready", () => {
+            DEBUG.log("imap connected")
+            this.imapReady();
+        });
+
+        this.imap.once("error", function (err) {
+            DEBUG.log(err);
+        });
+        
+        this.imap.once("end", function () {
+            DEBUG.log("Connection ended");
+        });
+
+        this.imap.connect();
+    }
+
+    imapReady() {
+        getAllMailboxes(this.account.id).then((mailboxes) => {
+            if (mailboxes.length > 0) {
+                this.boxes.push(new Box(this.imap, mailboxes[0].mailbox_id, mailboxes[0].mailbox_name));
+            } else {
+                this.imap.getBoxes('', (err, boxes) => {
+                    if (err) DEBUG.log(err);
+                    const allBoxName = this.getAllBox(boxes);
+                    registerMailbox(this.account.id, allBoxName).then((mailboxId) => {
+                        this.boxes.push(new Box(this.imap, mailboxId, allBoxName));
+                    });
+                });
+            }
+        });
+    }
+
+    getAllBox(boxes) {
+        // ideally we should get the all box to get all messages
+        let allBox;
+        Object.keys(boxes).forEach(key => {
+            if (key === 'INBOX') return;
+            allBox = key;
+            Object.keys(boxes[key].children).forEach((childBoxes) => {
+                if (boxes[key].children[childBoxes].attribs.includes('\\All')) {
+                    allBox += '/' + childBoxes;
+                }
+            });
+        });
+        return allBox;
+    }
+}
+
+module.exports = {
+    ImapInstance
+}

back/mails/imap/ImapSync.js

@@ -0,0 +1,28 @@
+const { getAllAccounts } = require("../../db/imap/imap");
+const { DEBUG } = require("../../utils/debug");
+const { ImapInstance } = require("./ImapInstance");
+
+class ImapSync {
+    constructor() {
+        this.instances = [];
+    }
+
+    init() {
+        getAllAccounts().then((accounts) => {
+            for (let i = 0; i < accounts.length; i++) {
+                accounts[i].password = accounts[i]?.password.toString().replace(/[\u{0080}-\u{FFFF}]/gu,"");
+                this.addInstance(accounts[i]);
+            }
+        }).catch((err) => {
+            DEBUG.log(err);
+        });
+    }
+
+    addInstance(config) {
+        this.instances.push(new ImapInstance(config));
+    }
+}
+
+module.exports = {
+    ImapSync
+}