Add CustomTxType FromString method

src/masternodes/mn_checks.cpp

@@ -87,6 +87,19 @@ std::string ToString(CustomTxType type) {
     return "None";
 }
 
+CustomTxType FromString(const std::string& str) {
+    static const auto customTxTypeMap = []() {
+     std::map<std::string, CustomTxType> generatedMap;
+     for (auto i = 0u; i < 256; i++) {
+          auto txType = static_cast<CustomTxType>(i);
+          generatedMap.emplace(ToString(txType), txType);
+     }
+     return generatedMap;
+    }();
+    auto type = customTxTypeMap.find(str);
+    return type == customTxTypeMap.end() ? CustomTxType::None : type->second;
+}
+
 static ResVal<CBalances> BurntTokens(CTransaction const & tx) {
     CBalances balances;
     for (const auto& out : tx.vout) {

src/masternodes/mn_checks.h

@@ -169,6 +169,7 @@ inline CustomTxType CustomTxCodeToType(uint8_t ch) {
 }
 
 std::string ToString(CustomTxType type);
+CustomTxType FromString(const std::string& str);
 
 // it's disabled after Dakota height
 inline bool NotAllowedToFail(CustomTxType txType, int height) {

src/masternodes/rpc_accounts.cpp

@@ -1027,6 +1027,8 @@ UniValue listaccounthistory(const JSONRPCRequest& request) {
             const auto str = optionsObj["txtype"].get_str();
             if (str.size() == 1) {
                 txType = CustomTxCodeToType(str[0]);
+            } else {
+                txType = FromString(str);
             }
         }
         if (!optionsObj["limit"].isNull()) {

test/functional/rpc_listaccounthistory.py

@@ -114,6 +114,8 @@ def run_test(self):
         result = self.nodes[1].listaccounthistory()
         assert_equal(result, [])
 
+        assert_equal(self.nodes[0].listaccounthistory('all', {"txtype": "MintToken"}), self.nodes[0].listaccounthistory('all', {"txtype": "M"}))
+
         # REVERTING:
         #========================
         self.start_node(2)