Working migrations with duplicate comparison

3 files changed, 54 insertions, 14 deletions

diff --git a/app/imap.js b/app/imap.js
index 1ac76a4..f2e8cc2 100644
--- a/app/imap.js
+++ b/app/imap.js
@@ -3,6 +3,7 @@ const { ImapFlow } = require('imapflow');
 
 ipcMain.on('imap:listTree:from', listTreeFrom);
 ipcMain.on('imap:listTree:to', listTreeTo);
+ipcMain.on('imap:migrate', migrate);
 
 async function connect (options) {
   const client = new ImapFlow({
@@ -32,3 +33,40 @@ async function listTreeTo (event, options) {
   event.reply('imap:listTree:to:reply', await client.listTree());
   await client.logout();
 }
+
+async function migrate (event, { from, to }) {
+  const fromClient = await connect(from);
+  const toClient = await connect(to);
+
+  const fromFolders = (await fromClient.list()).filter((folder) => folder.subscribed);
+  for (const fromFolder of fromFolders) {
+    try {
+      await toClient.mailboxCreate(fromFolder.path);
+    } catch (e) {}
+
+    const fromMailbox = await fromClient.getMailboxLock(fromFolder.path);
+    const toMailbox = await toClient.getMailboxLock(fromFolder.path);
+    try {
+      const toMsgsGenerator = await toClient.fetch('1:*', { flags: true, envelope: true, source: true });
+      const toMsgs = [];
+      for await (const toMsg of toMsgsGenerator) {
+        toMsgs.push(toMsg);
+      }
+      const fromMsgsGenerator = await fromClient.fetch('1:*', { flags: true, envelope: true, source: true });
+
+      for await (const fromMsg of fromMsgsGenerator) {
+        if (toMsgs.some((toMsg) => Buffer.compare(toMsg.source, fromMsg.source) === 0)) {
+          continue;
+        }
+
+        await toClient.append(fromFolder.path, fromMsg.source, Array.from(fromMsg.flags), fromMsg.envelope.date);
+      }
+    } finally {
+      fromMailbox.release();
+      toMailbox.release();
+    }
+  }
+
+  await fromClient.logout();
+  await toClient.logout();
+}
diff --git a/app/src/pages/Home.vue b/app/src/pages/Home.vue
index 2fe4030..bfe92bf 100644
--- a/app/src/pages/Home.vue
+++ b/app/src/pages/Home.vue
@@ -12,17 +12,11 @@
     <ul v-if="from.folders">
       <Folders :folder="from.folders" />
     </ul>
-    <code>
-      {{ from.folders }}
-    </code>
 
     <h1>TO</h1>
     <ul v-if="to.folders">
       <Folders :folder="to.folders" />
     </ul>
-    <code>
-      {{ to.folders }}
-    </code>
   </div>
 </template>
 
@@ -79,7 +73,10 @@ export default {
     },
 
     async migrate () {
-
+      this.$electron.ipcRenderer.send('imap:migrate', {
+        from: JSON.parse(JSON.stringify(this.from)),
+        to: JSON.parse(JSON.stringify(this.to)),
+      });
     },
   },
 };
@@ -96,4 +93,9 @@ body {
   display: flex;
   justify-content: space-between;
 }
+
+ul {
+  padding-left: 1em;
+  list-style-type: dot;
+}
 </style>
diff --git a/app/src/store.js b/app/src/store.js
index db5a9fa..818689b 100644
--- a/app/src/store.js
+++ b/app/src/store.js
@@ -5,15 +5,15 @@ export default createStore({
     return {
       from: {
         server: 'localhost',
-        port: '3143',
-        username: 'd@cool.de',
-        password: 'lolo11',
+        port: 3143,
+        username: 'from@example.org',
+        password: 'password',
       },
       to: {
-        server: '',
-        port: '',
-        username: '',
-        password: '',
+        server: 'localhost',
+        port: 31432,
+        username: 'to@example.org',
+        password: 'password',
       },
     };
   },