support updating sealed channels subjects in mobile app

app/mobile/ios/Podfile.lock

@@ -669,7 +669,7 @@ SPEC CHECKSUMS:
   FirebaseInstallations: 99d24bac0243cf8b0e96cf5426340d211f0bcc80
   FirebaseMessaging: 4487bbff9b9b927ba1dd3ea40d1ceb58e4ee3cb5
   fmt: ff9d55029c625d3757ed641535fd4a75fedc7ce9
-  glog: 3d02b25ca00c2d456734d0bcff864cbc62f6ae1a
+  glog: 04b94705f318337d7ead9e6d17c019bd9b1f6b1b
   GoogleDataTransport: 1c8145da7117bd68bbbed00cf304edb6a24de00f
   GoogleUtilities: 1d20a6ad97ef46f67bbdec158ce00563a671ebb7
   nanopb: b552cce312b6c8484180ef47159bc0f65a1f0431

app/mobile/src/api/setChannelSubject.js

@@ -1,8 +1,7 @@
 import { checkResponse, fetchWithTimeout } from './fetchUtil';
 
-export async function setChannelSubject(server, token, channelId, subject ) {
+export async function setChannelSubject(server, token, channelId, dataType, data ) {
-  let data = { subject };
+  let params = { dataType, data: JSON.stringify(data) };
-  let params = { dataType: 'superbasic', data: JSON.stringify(data) };
   let channel = await fetchWithTimeout(`https://${server}/content/channels/${channelId}/subject?agent=${token}`, { method: 'PUT', body: JSON.stringify(params)} );
   checkResponse(channel);
   return await channel.json();

app/mobile/src/context/useChannelContext.hook.js

@@ -273,9 +273,30 @@ export function useChannelContext() {
       const { server, appToken } = session.current;
       return await setChannelTopicSubject(server, appToken, channelId, topicId, data);
     },
-    setSubject: async (channelId, data) => {
+    setSubject: async (channelId, subject) => {
       const { server, appToken } = session.current;
-      return await setChannelSubject(server, appToken, channelId, data);
+      return await setChannelSubject(server, appToken, channelId, 'superbasic', { subject });
+    },
+    setSealedSubject: async (channelId, subject, sealKey) => {
+      const { server, appToken } = session.current;
+      const channel = channels.current.get(channelId);
+
+      let { seals, subjectEncrypted, subjectIv } = JSON.parse(channel.detail.data);
+      seals.forEach(seal => {
+        if (seal.publicKey === sealKey.public) {
+          let crypto = new JSEncrypt();
+          crypto.setPrivateKey(sealKey.private);
+          const unsealedKey = crypto.decrypt(seal.sealedKey);
+          const key = CryptoJS.enc.Hex.parse(unsealedKey);
+
+          const iv = CryptoJS.lib.WordArray.random(128 / 8);
+          const encrypted = CryptoJS.AES.encrypt(JSON.stringify({ subject }), key, { iv: iv });
+          subjectEncrypted = encrypted.ciphertext.toString(CryptoJS.enc.Base64)
+          subjectIv = iv.toString();
+        }
+      });
+      const data = { subjectEncrypted, subjectIv, seals };
+      return await setChannelSubject(server, appToken, channelId, 'sealed', data);
     },
     remove: async (channelId) => {
       const { server, appToken } = session.current;

app/mobile/src/context/useConversationContext.hook.js

@@ -333,7 +333,8 @@ export function useConversationContext() {
       locked = true;
       unlocked = item.unsealedDetail != null;
       if (item.unsealedDetail?.subject) {
-        subject = item.unsealedDetail.subject;
+        topic = item.unsealedDetail.subject;
+        subject = topic;
       }
       try {
         seals = JSON.parse(item.detail.data).seals;
@@ -440,6 +441,15 @@ export function useConversationContext() {
         await channel.actions.setSubject(channelId, subject);
       }
     },
+    setSealedSubject: async (subject, sealKey) => {
+      if (conversationId.current) {
+        const { cardId, channelId } = conversationId.current;
+        if (cardId) {
+          throw new Error("can only set hosted channel subjects");
+        }
+        await channel.actions.setSealedSubject(channelId, subject, sealKey);
+      }
+    },
     remove: async () => {
       if (conversationId.current) {
         const { cardId, channelId } = conversationId.current;

app/mobile/src/session/channels/channelItem/ChannelItem.jsx

@@ -19,7 +19,7 @@ export function ChannelItem({ item, openConversation }) {
             <Ionicons name="lock" style={styles.subjectIcon} size={16} color={Colors.text} />
           )}
           { item.locked && item.unlocked && (
-            <Ionicons name="lock-open-variant-outline" style={styles.subjectIcon} size={16} color={Colors.text} />
+            <Ionicons name="lock-open-variant-outline" style={styles.subjectIcon} size={16} color={Colors.grey} />
           )}
           <Text style={styles.subjectText} numberOfLines={1} ellipsizeMode={'tail'}>{ item.subject }</Text>
         </View>

app/mobile/src/session/details/Details.jsx

@@ -136,7 +136,7 @@ export function DetailsBody({ channel, clearConversation }) {
               <MatIcons name="lock-open-variant-outline" style={styles.subjectIcon} size={16} color={Colors.text} />
             )}
             <Text style={styles.subjectText} numberOfLines={1} ellipsizeMode={'tail'}>{ state.subject }</Text>
-            { !state.hostId && (
+            { !state.hostId && (!state.locked || state.sealable) && (
               <TouchableOpacity onPress={actions.showEditSubject}>
                 <AntIcons name="edit" size={16} color={Colors.text} />
               </TouchableOpacity>
@@ -166,7 +166,7 @@ export function DetailsBody({ channel, clearConversation }) {
             <Text style={styles.buttonText}>Report Topic</Text>
           </TouchableOpacity>
         )}
-        { !state.hostId && (
+        { !state.hostId && !state.locked && (
           <TouchableOpacity style={styles.button} onPress={actions.showEditMembers}>
             <Text style={styles.buttonText}>Edit Membership</Text>
           </TouchableOpacity>

app/mobile/src/session/details/useDetails.hook.js

@@ -20,7 +20,6 @@ export function useDetails() {
     locked: false,
     unlocked: false,
     sealable: false,
-    
   });
 
   const account = useContext(AccountContext);
@@ -37,7 +36,7 @@ export function useDetails() {
     if (account.state.sealKey && conversation.state.seals) {
       conversation.state.seals.forEach(seal => {
         if (seal.publicKey === account.state.sealKey.public) {
-          sealabel = true;
+          sealable = true;
         }
       });
     }
@@ -72,7 +71,12 @@ export function useDetails() {
       updateState({ subjectUpdate });
     },
     saveSubject: async () => {
+      if (state.locked) {
+        await conversation.actions.setSealedSubject(state.subjectUpdate, account.state.sealKey);
+      }
+      else {
         await conversation.actions.setSubject(state.subjectUpdate);
+      }
     },
     remove: async () => {
       await conversation.actions.remove();