Merge pull request #773 from cake-tech/CW-316-Get-address-from-user's-pinned-Tweets

add address lookup for pinned tweet

lib/entities/parse_address_from_domain.dart

@@ -44,10 +44,24 @@ class AddressResolver {
       if (text.startsWith('@') && !text.substring(1).contains('@')) {
         final formattedName = text.substring(1);
         final twitterUser = await TwitterApi.lookupUserByName(userName: formattedName);
-        final address = extractAddressByType(
-            raw: twitterUser.description ?? '', type: CryptoCurrency.fromString(ticker));
-        if (address != null) {
-          return ParsedAddress.fetchTwitterAddress(address: address, name: text);
+        final addressFromBio = extractAddressByType(
+            raw: twitterUser.description, type: CryptoCurrency.fromString(ticker));
+        if (addressFromBio != null) {
+          return ParsedAddress.fetchTwitterAddress(address: addressFromBio, name: text);
+        }
+        final tweets = twitterUser.tweets;
+        if (tweets != null) {
+          var subString = StringBuffer();
+          tweets.forEach((item) {
+            subString.writeln(item.text);
+          });
+          final userTweetsText = subString.toString();
+          final addressFromPinnedTweet =
+          extractAddressByType(raw: userTweetsText, type: CryptoCurrency.fromString(ticker));
+
+          if (addressFromPinnedTweet != null) {
+            return ParsedAddress.fetchTwitterAddress(address: addressFromPinnedTweet, name: text);
+          }
         }
       }
       if (!text.startsWith('@') && text.contains('@') && !text.contains('.')) {

lib/twitter/twitter_api.dart

@@ -10,7 +10,7 @@ class TwitterApi {
   static const userPath = '/2/users/by/username/';
 
   static Future<TwitterUser> lookupUserByName({required String userName}) async {
-    final queryParams = {'user.fields': 'description'};
+    final queryParams = {'user.fields': 'description', 'expansions': 'pinned_tweet_id'};
 
     final headers = {'authorization': 'Bearer $twitterBearerToken'};
 
@@ -32,6 +32,6 @@ class TwitterApi {
       throw Exception(responseJSON['errors'][0]['detail']);
     }
 
-    return TwitterUser.fromJson(responseJSON['data'] as Map<String, dynamic>);
+    return TwitterUser.fromJson(responseJSON);
   }
 }

lib/twitter/twitter_user.dart

@@ -1,16 +1,45 @@
 class TwitterUser {
-  TwitterUser({required this.id, required this.username, required this.name, this.description});
+  TwitterUser(
+      {required this.id,
+      required this.username,
+      required this.name,
+      required this.description,
+      this.tweets});
 
   final String id;
   final String username;
   final String name;
-  final String? description;
+  final String description;
+  final List<Tweet>? tweets;
 
   factory TwitterUser.fromJson(Map<String, dynamic> json) {
     return TwitterUser(
-        id: json['id'] as String,
-        username: json['username'] as String,
-        name: json['name'] as String,
-        description: json['description'] as String?);
+      id: json['data']['id'] as String,
+      username: json['data']['username'] as String,
+      name: json['data']['name'] as String,
+      description: json['data']['description'] as String? ?? '',
+      tweets: json['includes'] != null
+          ? List.from(json['includes']['tweets'] as List)
+              .map((e) => Tweet.fromJson(e as Map<String, dynamic>))
+              .toList()
+          : null,
+    );
+  }
+}
+
+class Tweet {
+  Tweet({
+    required this.id,
+    required this.text,
+  });
+
+  final String id;
+  final String text;
+
+  factory Tweet.fromJson(Map<String, dynamic> json) {
+    return Tweet(
+      id: json['id'] as String,
+      text: json['text'] as String,
+    );
   }
 }