qt: add generate command to gui console

Author: hernanmarino

src/qt/rpcconsole.cpp

@@ -24,7 +24,7 @@
 #include <util/strencodings.h>
 #include <util/string.h>
 #include <util/threadnames.h>
-
+#include <util/chaintype.h>
 #include <univalue.h>
 
 #include <QAbstractButton>
@@ -96,12 +96,15 @@ public Q_SLOTS:
 
 private:
     interfaces::Node& m_node;
+    bool executeConsoleGenerate(const std::vector<std::string>& parsed_command, const WalletModel* wallet_model, const bool exec_help = false);
+    void executeConsoleHelpGenerate();
     bool executeConsoleHelpConsole(const std::vector<std::string>& parsed_command, const WalletModel* wallet_model, const bool exec_help = false);
     bool executeConsoleOnlyCommand(const std::string& command, const WalletModel* wallet_model);
     // std::map mapping strings to methods member of RPCExecutor class
     // Keys must be strings with commands and (optionally) parameters in "canonical" form (separated by single space)
     // Keys should match the beggining of user input commands (user commands can have more parameters than the key)
     std::map<std::string, bool (RPCExecutor::*)(const std::vector<std::string>&, const WalletModel*, const bool)> m_method_map{
+        {"generate", &RPCExecutor::executeConsoleGenerate},
         {"help-console", &RPCExecutor::executeConsoleHelpConsole}};
 };
 
@@ -469,6 +472,73 @@ void RPCExecutor::request(const QString &command, const WalletModel* wallet_mode
     }
 }
 
+/**
+ * @brief Executes the console-only command "generate".
+ * @param parsed_command  A vector of strings with command and parameters, usually generated by RPCExecutor::parseHelper
+ * @param wallet_model  WalletModel to use for the command
+ * @return True if the command was executed, false otherwise.
+ */
+bool RPCExecutor::executeConsoleGenerate(const std::vector<std::string>& parsed_command, const WalletModel* wallet_model, const bool exec_help)
+{
+    // Initialize default parameters if missing
+    const std::string nblocks{parsed_command.size() > 1 ? parsed_command[1] : "1"};
+    const std::string maxtries{parsed_command.size() > 2 ? parsed_command[2] : "1000000"};
+
+    // Handle some special cases...
+    // Default to console help generate if more than 3 parameters or if "help generate" was called
+    if (parsed_command.size() > 3 || exec_help) {
+        executeConsoleHelpGenerate();
+        return true;
+    }
+    // Fail if we are on mainnet, to avoid generating addresses for blocks that will not be generated
+    if (Params().GetChainType() == ChainType::MAIN) {
+        Q_EMIT reply(RPCConsole::CMD_ERROR, QString("Error: generate is not available on mainnet"));
+        return true;
+    }
+    // Fail if parameters are not positive integers
+    const auto nblocks_value{ToIntegral<int>(nblocks)};
+    const auto maxtries_value{ToIntegral<int>(maxtries)};
+    if (!nblocks_value || !maxtries_value || nblocks_value.value() <= 0 || maxtries_value.value() <= 0) {
+        Q_EMIT reply(RPCConsole::CMD_ERROR, QString("Error: parameters must be positive integers"));
+        return true;
+    }
+
+    // Catch the console-only generate command with 2 or less parameters before RPC call is executed .
+    std::string blocks;
+    std::string address;
+    if (!RPCConsole::RPCExecuteCommandLine(m_node, address, "getnewaddress\n", /*pstrFilteredOut=*/nullptr, wallet_model)) {
+        Q_EMIT reply(RPCConsole::CMD_ERROR, QString("Error: could not generate new address"));
+    } else {
+        if (!RPCConsole::RPCExecuteCommandLine(m_node, blocks, "generatetoaddress " + nblocks + " " + address + " " + maxtries + "\n", /*pstrFilteredOut=*/nullptr, wallet_model)) {
+            Q_EMIT reply(RPCConsole::CMD_ERROR, QString("Error: could not generate blocks"));
+        } else {
+            UniValue result{UniValue::VOBJ};
+            UniValue blocks_object{UniValue::VOBJ};
+            blocks_object.read(blocks);
+            result.pushKV("address", address);
+            result.pushKV("blocks", blocks_object);
+            Q_EMIT reply(RPCConsole::CMD_REPLY, QString::fromStdString("\n" + result.write(2) + "\n\n"));
+        }
+    }
+    return true;
+}
+
+/**
+ * @brief  Executes the console-only command "help generate".
+ */
+void RPCExecutor::executeConsoleHelpGenerate()
+{
+    // Execute the console-only "help generate" command.
+    Q_EMIT reply(RPCConsole::CMD_REPLY,
+                 QString("\n"
+                         "Generate blocks, equivalent to RPC getnewaddress followed by RPC generatetoaddress.\n"
+                         "Optional positive integer arguments are number of blocks to generate and maximum iterations to try.\n"
+                         "Equivalent to RPC generatetoaddress nblocks and maxtries arguments.\n"
+                         "   example:    generate\n"
+                         "   example:    generate 4\n"
+                         "   example:    generate 3 6000\n\n"));
+}
+
 /**
  * @brief  Executes the console-only command "help-console".
  * @param  parsed_command  A vector of strings with command and parameters, usually generated by RPCExecutor::parseHelper