From 4011068430ca5b3fa2f591b6e7e2aef0b6adc8c0 Mon Sep 17 00:00:00 2001
From: gladcow <s.gladkov@pbsa.info>
Date: Sun, 29 Mar 2020 13:34:33 +0300
Subject: [PATCH] create PBTC asset

---
 libraries/chain/db_maint.cpp                  | 31 ++++++++++++++++++-
 .../chain/protocol/chain_parameters.hpp       |  5 +++
 2 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/libraries/chain/db_maint.cpp b/libraries/chain/db_maint.cpp
index 9c146ea9..f93386be 100644
--- a/libraries/chain/db_maint.cpp
+++ b/libraries/chain/db_maint.cpp
@@ -1853,12 +1853,41 @@ void perform_son_tasks(database& db)
          a.lifetime_referrer_fee_percentage = GRAPHENE_100_PERCENT - GRAPHENE_DEFAULT_NETWORK_PERCENT_OF_FEE;
       });
 
-      db.modify( gpo, [&]( global_property_object& gpo ) {
+      db.modify( gpo, [&son_account]( global_property_object& gpo ) {
             gpo.parameters.extensions.value.son_account = son_account.get_id();
             if( gpo.pending_parameters )
                gpo.pending_parameters->extensions.value.son_account = son_account.get_id();
       });
    }
+   // create PBTC asset here because son_account is the issuer of the PBTC
+   if (gpo.parameters.btc_asset() == asset_id_type())
+   {
+      // Create PBTC asset
+      const asset_dynamic_data_object& dyn_asset =
+         db.create<asset_dynamic_data_object>([](asset_dynamic_data_object& a) {
+            a.current_supply = GRAPHENE_MAX_SHARE_SUPPLY;
+         });
+
+      const asset_object& btc_asset =
+         db.create<asset_object>( [&gpo, &dyn_asset]( asset_object& a ) {
+            a.symbol = "PBTC";
+            a.options.max_supply = GRAPHENE_MAX_SHARE_SUPPLY;
+            a.precision = 8;
+            a.options.flags = 0;
+            a.options.issuer_permissions = 0;
+            a.issuer = *gpo.parameters.extensions.value.son_account;
+            a.options.core_exchange_rate.base.amount = 1;
+            a.options.core_exchange_rate.base.asset_id = asset_id_type(0);
+            a.options.core_exchange_rate.quote.amount = 1;
+            a.options.core_exchange_rate.quote.asset_id = asset_id_type(0);
+            a.dynamic_asset_data_id = dyn_asset.id;
+         });
+      db.modify( gpo, [&btc_asset]( global_property_object& gpo ) {
+            gpo.parameters.extensions.value.btc_asset = btc_asset.get_id();
+            if( gpo.pending_parameters )
+               gpo.pending_parameters->extensions.value.btc_asset = btc_asset.get_id();
+      });
+   }
 }
 
 void database::perform_chain_maintenance(const signed_block& next_block, const global_property_object& global_props)
diff --git a/libraries/chain/include/graphene/chain/protocol/chain_parameters.hpp b/libraries/chain/include/graphene/chain/protocol/chain_parameters.hpp
index 2c5c979a..0618dc3f 100644
--- a/libraries/chain/include/graphene/chain/protocol/chain_parameters.hpp
+++ b/libraries/chain/include/graphene/chain/protocol/chain_parameters.hpp
@@ -59,6 +59,7 @@ namespace graphene { namespace chain {
       optional < uint32_t >           son_heartbeat_frequency;
       optional < uint32_t >           son_down_time;
       optional < account_id_type >    son_account;
+      optional < asset_id_type >      btc_asset;
    };
 
    struct chain_parameters
@@ -178,6 +179,9 @@ namespace graphene { namespace chain {
       inline account_id_type son_account() const {
          return extensions.value.son_account.valid() ? *extensions.value.son_account : GRAPHENE_NULL_ACCOUNT;
       }
+      inline asset_id_type btc_asset() const {
+         return extensions.value.btc_asset.valid() ? *extensions.value.btc_asset : asset_id_type();
+      }
    };
 
 } }  // graphene::chain
@@ -204,6 +208,7 @@ FC_REFLECT( graphene::chain::parameter_extension,
    (son_heartbeat_frequency)
    (son_down_time)
    (son_account)
+   (btc_asset)
 )
 
 FC_REFLECT( graphene::chain::chain_parameters,