Add support for zboard topics

src/mainwindow.cpp

@@ -458,6 +458,18 @@ void MainWindow::postToZBoard() {
         }
     }
 
+    QMap<QString, QString> topics;
+    // Insert the main topic automatically
+    topics.insert("#Main_Area", Utils::getZboardAddr());
+    zb.topicsList->addItem(topics.firstKey());
+    // Then call the API to get topics, and if it returns successfully, then add the rest of the topics
+    rpc->getZboardTopics([&](QMap<QString, QString> topicsMap) {
+        for (auto t : topicsMap.keys()) {
+            topics.insert(t, topicsMap[t]);
+            zb.topicsList->addItem(t);
+        }
+    });
+
     // Testnet warning
     if (Settings::getInstance()->isTestnet()) {
         zb.testnetWarning->setText("You are on testnet, your post won't actually appear on z-board.net");
@@ -524,7 +536,8 @@ void MainWindow::postToZBoard() {
         if (!zb.postAs->text().trimmed().isEmpty())
             memo = zb.postAs->text().trimmed() + ":: " + memo;
 
-        tx.toAddrs.push_back(ToFields{ Utils::getZboardAddr(), Utils::getZboardAmount(), memo, memo.toUtf8().toHex() });
+        auto toAddr = topics[zb.topicsList->currentText()];
+        tx.toAddrs.push_back(ToFields{ toAddr, Utils::getZboardAmount(), memo, memo.toUtf8().toHex() });
         tx.fee = Utils::getMinerFee();
 
         json params = json::array();
@@ -543,7 +556,6 @@ void MainWindow::postToZBoard() {
 }
 
 void MainWindow::doImport(QList<QString>* keys) {
-    qDebug() << keys->size();
     if (keys->isEmpty()) {
         delete keys;
         ui->statusBar->showMessage("Private key import rescan finished");

src/rpc.cpp

@@ -807,3 +807,57 @@ void RPC::refreshZECPrice() {
         Settings::getInstance()->setZECPrice(0);
     });
 }
+
+// Fetch the Z-board topics list
+void RPC::getZboardTopics(std::function<void(QMap<QString, QString>)> cb) {
+    if (conn == nullptr)
+        return noConnection();
+
+    QUrl cmcURL("http://z-board.net/listTopics");
+
+    QNetworkRequest req;
+    req.setUrl(cmcURL);
+
+    QNetworkReply *reply = conn->restclient->get(req);
+
+    QObject::connect(reply, &QNetworkReply::finished, [=] {
+        reply->deleteLater();
+
+        try {
+            if (reply->error() != QNetworkReply::NoError) {
+                auto parsed = json::parse(reply->readAll(), nullptr, false);
+                if (!parsed.is_discarded() && !parsed["error"]["message"].is_null()) {
+                    qDebug() << QString::fromStdString(parsed["error"]["message"]);
+                }
+                else {
+                    qDebug() << reply->errorString();
+                }
+                return;
+            }
+
+            auto all = reply->readAll();
+
+            auto parsed = json::parse(all, nullptr, false);
+            if (parsed.is_discarded()) {
+                return;
+            }
+
+            QMap<QString, QString> topics;
+            for (const json& item : parsed["topics"].get<json::array_t>()) {
+                if (item.find("addr") == item.end() || item.find("topicName") == item.end())
+                    return;
+
+                QString addr  = QString::fromStdString(item["addr"].get<json::string_t>());
+                QString topic = QString::fromStdString(item["topicName"].get<json::string_t>());
+                
+                topics.insert(topic, addr);
+            }
+
+            cb(topics);
+        }
+        catch (...) {
+            // If anything at all goes wrong, just set the price to 0 and move on.
+            qDebug() << QString("Caught something nasty");
+        }
+    });
+}

src/rpc.h

@@ -36,7 +36,9 @@ public:
     void refresh(bool force = false);
 
     void refreshAddresses();    
+    
     void refreshZECPrice();
+    void getZboardTopics(std::function<void(QMap<QString, QString>)> cb);
 
     void fillTxJsonParams(json& params, Tx tx);
     void sendZTransaction   (json params, const std::function<void(json)>& cb);

src/zboard.ui

@@ -82,7 +82,7 @@
    <item row="0" column="0" colspan="2">
     <widget class="QLabel" name="label_2">
      <property name="text">
-      <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;ZBoard: Fully anonymous and untraceable chat messages based on the ZCash blockchain. &lt;a href=&quot;http://www.z-board.net/&quot;&gt;&lt;span style=&quot; text-decoration: underline; color:#0000ff;&quot;&gt;http://www.z-board.net/&lt;/span&gt;&lt;/a&gt;&lt;/p&gt;&lt;p&gt;Posting to ZBoard: #Main_Area&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+      <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;ZBoard: Fully anonymous and untraceable chat messages based on the ZCash blockchain. &lt;a href=&quot;http://www.z-board.net/&quot;&gt;&lt;span style=&quot; text-decoration: underline; color:#0000ff;&quot;&gt;http://www.z-board.net/&lt;/span&gt;&lt;/a&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
      </property>
      <property name="wordWrap">
       <bool>true</bool>
@@ -115,6 +115,16 @@
      </property>
     </widget>
    </item>
+   <item row="1" column="1">
+    <widget class="QComboBox" name="topicsList"/>
+   </item>
+   <item row="1" column="0">
+    <widget class="QLabel" name="label_6">
+     <property name="text">
+      <string>Posting to Board</string>
+     </property>
+    </widget>
+   </item>
   </layout>
  </widget>
  <tabstops>