From b22086ff7e7d945834bd1943ee55eec908f84b14 Mon Sep 17 00:00:00 2001
From: sierra19XX <15652887+sierra19XX@users.noreply.github.com>
Date: Wed, 12 May 2021 11:44:27 +0000
Subject: [PATCH] add get_blocks

---
 libraries/app/database_api.cpp                   | 16 ++++++++++++++++
 .../app/include/graphene/app/database_api.hpp    |  9 +++++++++
 .../wallet/include/graphene/wallet/wallet.hpp    |  2 ++
 libraries/wallet/wallet.cpp                      |  5 +++++
 4 files changed, 32 insertions(+)

diff --git a/libraries/app/database_api.cpp b/libraries/app/database_api.cpp
index a0a7cfc2..4a41eb90 100644
--- a/libraries/app/database_api.cpp
+++ b/libraries/app/database_api.cpp
@@ -71,6 +71,7 @@ class database_api_impl : public std::enable_shared_from_this<database_api_impl>
       optional<block_header> get_block_header(uint32_t block_num)const;
       map<uint32_t, optional<block_header>> get_block_header_batch(const vector<uint32_t> block_nums)const;
       optional<signed_block> get_block(uint32_t block_num)const;
+      vector<optional<signed_block>> get_blocks(uint32_t block_num_from, uint32_t block_num_to)const;
       processed_transaction get_transaction( uint32_t block_num, uint32_t trx_in_block )const;
 
       // Globals
@@ -499,6 +500,21 @@ optional<signed_block> database_api_impl::get_block(uint32_t block_num)const
    return _db.fetch_block_by_number(block_num);
 }
 
+vector<optional<signed_block>> database_api::get_blocks(uint32_t block_num_from, uint32_t block_num_to)const
+{
+   return my->get_blocks( block_num_from,  block_num_to );
+}
+
+vector<optional<signed_block>> database_api_impl::get_blocks(uint32_t block_num_from, uint32_t block_num_to)const
+{
+   FC_ASSERT( block_num_to >= block_num_from );
+   vector<optional<signed_block>> res;
+   for(uint32_t block_num=block_num_from; block_num<=block_num_to; block_num++) {
+      res.push_back(_db.fetch_block_by_number(block_num));
+   }
+   return res;
+}
+
 processed_transaction database_api::get_transaction( uint32_t block_num, uint32_t trx_in_block )const
 {
    return my->get_transaction( block_num, trx_in_block );
diff --git a/libraries/app/include/graphene/app/database_api.hpp b/libraries/app/include/graphene/app/database_api.hpp
index 5b275f3f..80fe78dd 100644
--- a/libraries/app/include/graphene/app/database_api.hpp
+++ b/libraries/app/include/graphene/app/database_api.hpp
@@ -199,6 +199,14 @@ class database_api
        */
       optional<signed_block> get_block(uint32_t block_num)const;
 
+      /**
+       * @brief Retrieve a list of signed blocks
+       * @param block_num_from start
+       * @param block_num_to end
+       * @return list of referenced blocks
+       */
+      vector<optional<signed_block>> get_blocks(uint32_t block_num_from, uint32_t block_num_to)const;
+
       /**
        * @brief used to fetch an individual transaction.
        */
@@ -985,6 +993,7 @@ FC_API(graphene::app::database_api,
    (get_block_header)
    (get_block_header_batch)
    (get_block)
+   (get_blocks)
    (get_transaction)
    (get_recent_transaction_by_id)
 
diff --git a/libraries/wallet/include/graphene/wallet/wallet.hpp b/libraries/wallet/include/graphene/wallet/wallet.hpp
index b09d950e..58d78228 100644
--- a/libraries/wallet/include/graphene/wallet/wallet.hpp
+++ b/libraries/wallet/include/graphene/wallet/wallet.hpp
@@ -312,6 +312,7 @@ class wallet_api
        */
       variant_object                    about() const;
       optional<signed_block_with_info>    get_block( uint32_t num );
+      vector<optional<signed_block>>      get_blocks(uint32_t block_num_from, uint32_t block_num_to)const;
       /** Returns the number of accounts registered on the blockchain
        * @returns the number of registered accounts
        */
@@ -2652,6 +2653,7 @@ FC_API( graphene::wallet::wallet_api,
         (get_account)
         (get_account_id)
         (get_block)
+        (get_blocks)
         (get_account_count)
         (get_account_history)
         (get_relative_account_history)
diff --git a/libraries/wallet/wallet.cpp b/libraries/wallet/wallet.cpp
index 29306675..874e10b5 100644
--- a/libraries/wallet/wallet.cpp
+++ b/libraries/wallet/wallet.cpp
@@ -4351,6 +4351,11 @@ optional<signed_block_with_info> wallet_api::get_block(uint32_t num)
    return my->_remote_db->get_block(num);
 }
 
+vector<optional<signed_block>> wallet_api::get_blocks(uint32_t block_num_from, uint32_t block_num_to) const
+{
+   return my->_remote_db->get_blocks(block_num_from, block_num_to);
+}
+
 uint64_t wallet_api::get_account_count() const
 {
    return my->_remote_db->get_account_count();