[FIX] mail: process result of init messaging asynchronously

Part of task-2308312

closes odoo/odoo#55562

X-original-commit: bdc2a9f516562c854837248e7d0898e5cfc8dec1
Signed-off-by: Alexandre Kühn (aku) <aku@odoo.com>
Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/addons/im_livechat/static/src/models/messaging_initializer/messaging_initializer.js b/addons/im_livechat/static/src/models/messaging_initializer/messaging_initializer.js
index 5f356f8146d..4780cf041a4 100644
--- a/addons/im_livechat/static/src/models/messaging_initializer/messaging_initializer.js
+++ b/addons/im_livechat/static/src/models/messaging_initializer/messaging_initializer.js
@@ -13,10 +13,13 @@ registerInstancePatchModel('mail.messaging_initializer', 'im_livechat/static/src
      * @override
      * @param {Object[]} [param0.channel_livechat=[]]
      */
-    _initChannels(initMessagingData) {
-        this._super(initMessagingData);
+    async _initChannels(initMessagingData) {
+        await this.async(() => this._super(initMessagingData));
         const { channel_livechat = [] } = initMessagingData;
         for (const data of channel_livechat) {
+            // there might be a lot of channels, insert each of them one by
+            // one asynchronously to avoid blocking the UI
+            await this.async(() => new Promise(resolve => setTimeout(resolve)));
             this.env.models['mail.thread'].insert(
                 this.env.models['mail.thread'].convertData(data),
             );