From 13076ee73e5e061f68299a47f20658f24651bcfd Mon Sep 17 00:00:00 2001
From: gladcow <s.gladkov@pbsa.info>
Date: Sat, 21 Mar 2020 13:02:41 +0300
Subject: [PATCH] tx and inputs amounts serialization

---
 .../peerplays_sidechain/bitcoin_utils.cpp     | 28 +++++++++++++++++++
 .../peerplays_sidechain/bitcoin_utils.hpp     |  4 +++
 .../bitcoin_utils_test.cpp                    | 12 ++++++++
 3 files changed, 44 insertions(+)

diff --git a/libraries/plugins/peerplays_sidechain/bitcoin_utils.cpp b/libraries/plugins/peerplays_sidechain/bitcoin_utils.cpp
index b81a851c..9457ee61 100644
--- a/libraries/plugins/peerplays_sidechain/bitcoin_utils.cpp
+++ b/libraries/plugins/peerplays_sidechain/bitcoin_utils.cpp
@@ -7,6 +7,8 @@
 #include <graphene/peerplays_sidechain/bitcoin_utils.hpp>
 #include <secp256k1.h>
 
+#include <boost/property_tree/json_parser.hpp>
+
 namespace graphene { namespace peerplays_sidechain {
 
 static const unsigned char OP_0 = 0x00;
@@ -783,4 +785,30 @@ bytes get_weighted_multisig_redeem_script(std::vector<std::pair<std::string, uin
    return generate_redeem_script(key_data);
 }
 
+void read_tx_data_from_string(const std::string &string_buf, bytes &tx, std::vector<uint64_t> &in_amounts)
+{
+   std::stringstream ss(string_buf);
+   boost::property_tree::ptree json;
+   boost::property_tree::read_json(ss, json);
+   std::string tx_hex = json.get<std::string>("tx_hex");
+   tx.clear();
+   tx.resize(tx_hex.size() / 2);
+   fc::from_hex(tx_hex, (char*)&tx[0], tx.size());
+   in_amounts.clear();
+   for(auto &v: json.get_child("in_amounts"))
+      in_amounts.push_back(fc::to_uint64(v.second.data()));
+}
+
+std::string save_tx_data_to_string(const bytes &tx, const std::vector<uint64_t> &in_amounts)
+{
+   std::string res = "{\"tx_hex\":\"" + fc::to_hex((const char*)&tx[0], tx.size()) + "\",\"in_amounts\":[";
+   for (unsigned int idx = 0; idx < in_amounts.size(); ++idx) {
+      res += fc::to_string(in_amounts[idx]);
+      if (idx != in_amounts.size() - 1)
+         res += ",";
+   }
+   res += "]}";
+   return res;
+}
+
 }} // namespace graphene::peerplays_sidechain
diff --git a/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/bitcoin_utils.hpp b/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/bitcoin_utils.hpp
index 9cf7f05c..5f7c4f3b 100644
--- a/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/bitcoin_utils.hpp
+++ b/libraries/plugins/peerplays_sidechain/include/graphene/peerplays_sidechain/bitcoin_utils.hpp
@@ -68,6 +68,10 @@ bytes add_signatures_to_unsigned_tx(const bytes &unsigned_tx,
                                     const std::vector<std::vector<bytes>> &signatures,
                                     const bytes &redeem_script);
 
+void read_tx_data_from_string(const std::string &string_buf, bytes& tx, std::vector<uint64_t>& in_amounts);
+std::string save_tx_data_to_string(const bytes& tx, const std::vector<uint64_t>& in_amounts);
+
+
 struct btc_outpoint {
    fc::uint256 hash;
    uint32_t n;
diff --git a/tests/peerplays_sidechain/bitcoin_utils_test.cpp b/tests/peerplays_sidechain/bitcoin_utils_test.cpp
index c75e12de..cc596664 100644
--- a/tests/peerplays_sidechain/bitcoin_utils_test.cpp
+++ b/tests/peerplays_sidechain/bitcoin_utils_test.cpp
@@ -28,6 +28,18 @@ BOOST_AUTO_TEST_CASE(tx_serialization)
    BOOST_CHECK(bintx == buff);
 }
 
+BOOST_AUTO_TEST_CASE(tx_data_serialization)
+{
+   bytes source_tx({0, 1, 2, 3, 4, 5});
+   std::vector<uint64_t> source_ins({6, 7, 8, 9, 10});
+   std::string buf = save_tx_data_to_string(source_tx, source_ins);
+   bytes destination_tx;
+   std::vector<uint64_t> destination_ins;
+   read_tx_data_from_string(buf, destination_tx, destination_ins);
+   BOOST_REQUIRE(source_tx == destination_tx);
+   BOOST_REQUIRE(source_ins == destination_ins);
+}
+
 BOOST_AUTO_TEST_CASE(pw_transfer)
 {
    // key set for the old Primary Wallet