feat: get/add/edit customer notes (#3806)

* feat: add required module

* feat: add 'addOrEditCustomerNote' function

* feat: add 'getCustomerNote' function

* fix: check for logic availability

* feat: add 'Chat.addOrEditCustomerNote'

* feat: add Chat.getCustomerNote

src/Client.js

@@ -2356,6 +2356,57 @@ class Client extends EventEmitter {
             }));
         }, userIds);
     }
+
+    /**
+     * Add or edit a customer note
+     * @see https://faq.whatsapp.com/1433099287594476
+     * @param {string} userId The ID of a customer to add a note to
+     * @param {string} note The note to add
+     * @returns {Promise<void>}
+     */
+    async addOrEditCustomerNote(userId, note) {
+        return await this.pupPage.evaluate(async (userId, note) => {
+            if (!window.Store.BusinessGatingUtils.smbNotesV1Enabled()) return;
+
+            return window.Store.CustomerNoteUtils.noteAddAction(
+                'unstructured',
+                window.Store.WidToJid.widToUserJid(window.Store.WidFactory.createWid(userId)),
+                note
+            );
+        }, userId, note);
+    }
+
+    /**
+     * Get a customer note
+     * @see https://faq.whatsapp.com/1433099287594476
+     * @param {string} userId The ID of a customer to get a note from
+     * @returns {Promise<{
+     *    chatId: string,
+     *    content: string,
+     *    createdAt: number,
+     *    id: string,
+     *    modifiedAt: number,
+     *    type: string
+     * }>}
+     */
+    async getCustomerNote(userId) {
+        return await this.pupPage.evaluate(async (userId) => {
+            if (!window.Store.BusinessGatingUtils.smbNotesV1Enabled()) return null;
+
+            const note = await window.Store.CustomerNoteUtils.retrieveOnlyNoteForChatJid(
+                window.Store.WidToJid.widToUserJid(window.Store.WidFactory.createWid(userId))
+            );
+
+            let serialized = note?.serialize();
+
+            if (!serialized) return null;
+
+            serialized.chatId = window.Store.JidToWid.userJidToUserWid(serialized.chatJid)._serialized;
+            delete serialized.chatJid;
+
+            return serialized;
+        }, userId);
+    }
 }
 
 module.exports = Client;