Include Java nostr (#480)

Author: KoalaSat

.github/workflows/android-build.yml

@@ -21,7 +21,7 @@ jobs:
       - uses: actions/setup-java@v3
         with:
           distribution: temurin
-          java-version: 11
+          java-version: 19
 
       - name: Setup Gradle
         uses: gradle/gradle-build-action@v2

android/app/build.gradle

@@ -165,6 +165,8 @@ dependencies {
 
     implementation 'com.facebook.fresco:animated-webp:2.6.0'
     implementation 'com.facebook.fresco:webpsupport:2.6.0'
+    implementation 'com.github.KoalaSat.nostr-java:nostr-base:70e62e24ad'
+    implementation 'com.github.KoalaSat.nostr-java:nostr-event:70e62e24ad'
 
     implementation 'com.facebook.fresco:animated-gif:2.6.0'
 

android/app/src/main/java/com/nostros/classes/Event.java

@@ -21,6 +21,11 @@
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import nostr.crypto.schnorr.Schnorr;
+import nostr.crypto.bech32.Bech32;
+import nostr.util.NostrException;
+import nostr.util.NostrUtil;
+
 public class Event {
     private final int created_at;
     private final String content;
@@ -87,7 +92,13 @@ public void save(SQLiteDatabase database, String userPubKey, String relayUrl) {
     }
 
     protected boolean isValid() {
-        return !id.isEmpty() && !sig.isEmpty() && created_at <= System.currentTimeMillis() / 1000L;
+        boolean verified = false;
+        try {
+            verified = Schnorr.verify(NostrUtil.hexToBytes(id), NostrUtil.hexToBytes(pubkey), NostrUtil.hexToBytes(sig));
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return verified && created_at <= System.currentTimeMillis() / 1000L;
     }
 
     protected String getMainEventId() {
@@ -143,9 +154,9 @@ protected int getUserMentioned(String userPubKey) {
 
     protected String getRepostId() {
         String match = null;
-        Matcher m = Pattern.compile("#\\[(\\d+)\\]").matcher(content);
-        while (m.find()) {
-            int position = Integer.parseInt(m.group(1));
+        Matcher matcherTag = Pattern.compile("#\\[(\\d+)\\]").matcher(content);
+        if (matcherTag.find()) {
+            int position = Integer.parseInt(matcherTag.group(1));
             try {
                 JSONArray tag = tags.getJSONArray(position);
                 String tagKind = tag.getString(0);
@@ -156,6 +167,15 @@ protected String getRepostId() {
                 e.printStackTrace();
             }
         }
+        Matcher matcherBech = Pattern.compile("nostr:((nevent1|note1)\\S+)").matcher(content);
+        if (matcherBech.find()) {
+            String bech32 = matcherBech.group(1);
+            try {
+                match = Bech32.fromBech32(bech32);
+            } catch (NostrException e) {
+                e.printStackTrace();
+            }
+        }
         return match;
     }
 

android/build.gradle

@@ -1,5 +1,11 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
+allprojects {
+    repositories {
+        maven { url 'https://jitpack.io' }
+    }
+}
+
 buildscript {
     ext {
         buildToolsVersion = "33.0.0"

android/gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.1-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

frontend/Components/MenuItems/index.tsx

@@ -45,7 +45,7 @@ export const MenuItems: React.FC = () => {
 
   React.useEffect(() => {
     setActiveRelays(relays.filter((relay) => relay.active).length)
-  }, [relays])
+  }, [relays, balance])
 
   const onPressLogout: () => void = () => {
     logout()
@@ -154,7 +154,7 @@ export const MenuItems: React.FC = () => {
             onPress={() => onPressItem('wallet', 1)}
             onTouchEnd={() => setDrawerItemIndex(-1)}
             right={() => {
-              if (!type || !balance) return <></>
+              if (!type || balance === undefined) return <></>
               return (
                 <Text>
                   {`${balance} `}

frontend/Components/TextContent/LinksPreview/index.tsx

@@ -78,6 +78,7 @@ export const LinksPreview: React.FC<TextContentProps> = ({ urls, lnUrl }) => {
     rowPosition: 'top' | 'bottom',
   ) => JSX.Element = (link, index, rowPosition) => (
     <TouchableWithoutFeedback
+      key={link}
       onPress={() =>
         navigate('ImageGallery', {
           urls: imageLinks,
@@ -86,7 +87,6 @@ export const LinksPreview: React.FC<TextContentProps> = ({ urls, lnUrl }) => {
       }
     >
       <FastImage
-        key={link}
         style={[
           styles.cardCover,
           {

frontend/Contexts/WalletContext.tsx

@@ -131,6 +131,7 @@ export const WalletContextProvider = ({ children }: WalletContextProviderProps):
 
   const logoutWallet: () => void = () => {
     SInfo.deleteItem('lndHub', {})
+    SInfo.deleteItem('lnBits', {})
     setType(undefined)
     setConfig(undefined)
     setBalance(undefined)

frontend/Pages/ConversationPage/index.tsx

@@ -75,7 +75,7 @@ export const ConversationPage: React.FC<ConversationPageProps> = ({ route }) =>
 
       return () =>
         relayPool?.unsubscribe([
-          `conversation${route.params.pubKey}`,
+          `conversation${route.params.pubKey.substring(0, 8)}`,
           `conversation-replies${route.params.pubKey.substring(0, 8)}`,
         ])
     }, []),
@@ -272,7 +272,7 @@ export const ConversationPage: React.FC<ConversationPageProps> = ({ route }) =>
     if (!publicKey || !privateKey || !otherUser) return <></>
 
     const eTags = getETags(item)
-    const showAvatar = directMessages[index - 1]?.pubkey !== item.pubkey
+    const showAvatar = index < 1 || directMessages[index - 1]?.pubkey !== item.pubkey
     const isReply = eTags.length > 0
     const repliedMessageId = eTags.length > 0 ? eTags[eTags.length - 1][1] : undefined
     const repliedMessage = directMessages.find((message) => message.id === repliedMessageId)

frontend/Pages/HomePage/HomeFeed/MyFeed/index.tsx

@@ -92,7 +92,7 @@ export const MyFeed: React.FC<MyFeedProps> = ({
 
           const message: RelayFilters = {
             kinds: [Kind.Text, Kind.RecommendRelay],
-            authors: contacts
+            authors: contacts,
           }
           if (results.length >= pageSize) {
             message.since = results[pageSize - 1].created_at