consolodating subject extraction

app/mobile/src/context/channelUtil.js

@@ -0,0 +1,67 @@
+import { getCardByGuid } from 'context/cardUtil';
+
+export function getChannelSubjectLogo(cardId, profileGuid, channel, cards, cardImageUrl) {
+
+  let subject;
+  try {
+    if (channel?.detail?.dataType === 'sealed') {
+      subject = channel?.unsealedDetail?.subject;
+    }
+    if (channel?.detail?.dataType === 'superbasic') {
+      subject = JSON.parse(channel.detail.data)?.subject;
+    }
+  }
+  catch(err) {
+    console.log(err);
+  }
+
+  const contacts = [];
+  if (cardId) {
+    contacts.push(cardId);
+  }
+  if (channel?.detail?.members?.length) {
+    channel.detail.members.forEach(guid => {
+      if (guid !== profileGuid) {
+        const contact = getCardByGuid(cards, guid)?.card;
+        contacts.push(contact);
+      }
+    })
+  }
+
+  if (!subject) {
+    if (contacts.length === 0) {
+      subject = 'Notes';
+    }
+    else {
+      const names = [];
+      contacts.forEach(contact => {
+        if (contact?.profile?.name) {
+          names.push(contact.profile.name);
+        }
+        else if (contact?.profile?.handle) {
+          names.push(contact.profile.handle);
+        }
+      });
+      subject = names.join(', ');
+    }
+  }
+
+  let logo;
+  if (contacts.length === 0) {
+    logo = 'solution';
+  }
+  else if (contacts.length === 1) {
+    const contact = contacts[0];
+    if (contact?.profile?.imageSet) {
+      logo = cardImageUrl(contact.cardId)
+    }
+    else {
+      logo = 'avatar';
+    }
+  }
+  else {
+    logo = 'appstore';
+  }
+
+  return { logo, subject };
+}