From 54a1d052674e0c5f8f0eb7f605efd787ad7a3d41 Mon Sep 17 00:00:00 2001
From: Semen Medvedev <smedvedev@golos.io>
Date: Fri, 25 Jan 2019 15:00:09 +0700
Subject: [PATCH] Add sending events into charge smart-contract #380

---
 golos.charge/golos.charge.abi | 33 +++++++++++++++++++++++++++++++++
 golos.charge/golos.charge.cpp |  8 ++++++++
 golos.charge/golos.charge.hpp |  4 ++++
 3 files changed, 45 insertions(+)

diff --git a/golos.charge/golos.charge.abi b/golos.charge/golos.charge.abi
index 7cbded38..46ee51a0 100644
--- a/golos.charge/golos.charge.abi
+++ b/golos.charge/golos.charge.abi
@@ -192,6 +192,36 @@
         }
     ]
   },
+  {
+    "name": "chargestate",
+    "base": "",
+    "fields": [
+        {
+            "name": "user",
+            "type": "name"
+        },
+        {
+            "name": "charge_symbol",
+            "type": "uint64"
+        },
+        {
+            "name": "token_code",
+            "type": "symbol_code"
+        },
+        {
+            "name": "charge_id",
+            "type": "uint8"
+        },
+        {
+            "name": "last_update",
+            "type": "uint64"
+        },
+        {
+            "name": "value",
+            "type": "base_t"
+        }
+    ]
+  },
   {
     "name": "stored",
     "base": "",
@@ -245,6 +275,9 @@
     ]
   },
   ],
+  "events": [
+    {"name": "chargestate", "type": "chargestate"},
+  ],
   "actions": [
   {
     "name": "setrestorer",
diff --git a/golos.charge/golos.charge.cpp b/golos.charge/golos.charge.cpp
index abe75259..b8c72504 100644
--- a/golos.charge/golos.charge.cpp
+++ b/golos.charge/golos.charge.cpp
@@ -1,4 +1,5 @@
 #include "golos.charge.hpp"
+#include <eosiolib/event.hpp>
 
 namespace golos {
 using namespace eosio;
@@ -33,6 +34,7 @@ fixp_t charge::consume_charge(name issuer, name user, symbol_code token_code, ui
                 item.charge_id = charge_id;
                 item.last_update = current_time();
                 item.value = new_val.data();
+                send_charge_event(user, item);
             });
         return new_val;
     }
@@ -40,6 +42,7 @@ fixp_t charge::consume_charge(name issuer, name user, symbol_code token_code, ui
         balances_table.modify(*itr, name(), [&]( auto &item ) {
             item.last_update = current_time();
             item.value = new_val.data();
+            send_charge_event(user, item);
         });
     else
         balances_table.erase(itr);
@@ -117,6 +120,11 @@ void charge::setrestorer(symbol_code token_code, uint8_t charge_id, std::string
              item.max_elapsed = to_fixp(max_elapsed).data();
         });
 }
+
+void charge::send_charge_event(name user, const balance& state) {
+    eosio::event(_self, "chargestate"_n, std::make_tuple(user, state)).send();
+}
+
 EOSIO_DISPATCH(charge, (use)(useandstore)(removestored)(setrestorer) )
 
 } /// namespace golos
diff --git a/golos.charge/golos.charge.hpp b/golos.charge/golos.charge.hpp
index 21bebda5..efc1133c 100644
--- a/golos.charge/golos.charge.hpp
+++ b/golos.charge/golos.charge.hpp
@@ -113,6 +113,10 @@ class charge : public contract {
         
         return std::max(fp_cast<fixp_t>((elap_t(FP(user_balance.value)) - elap_t(restored)) + elap_t(price)), fixp_t(0));
     }
+
+private:
+    void send_charge_event(name user, const balance& state);
+
 public:
     static inline int64_t get_current_value(name code, name user, symbol_code token_code, uint8_t charge_id = 0) {
         balances balances_table(code, user.value);