From af2a819547a823acb06128e1710f545042834c89 Mon Sep 17 00:00:00 2001
From: Ayrat Badykov <ayratin555@gmail.com>
Date: Sat, 3 Aug 2019 13:16:23 +0300
Subject: [PATCH] insert emission rewards

---
 .../explorer/chain/block/emission_reward.ex   |  4 +--
 .../explorer/chain_spec/parity/importer.ex    | 20 ++++++++++++---
 .../chain_spec/parity/importer_test.exs       | 25 ++++++++++++++++---
 3 files changed, 39 insertions(+), 10 deletions(-)

diff --git a/apps/explorer/lib/explorer/chain/block/emission_reward.ex b/apps/explorer/lib/explorer/chain/block/emission_reward.ex
index 890b88226c..a6c3713fcc 100644
--- a/apps/explorer/lib/explorer/chain/block/emission_reward.ex
+++ b/apps/explorer/lib/explorer/chain/block/emission_reward.ex
@@ -3,7 +3,7 @@ defmodule Explorer.Chain.Block.EmissionReward do
   Represents the static reward given to the miner of a block in a range of block numbers.
   """
 
-  use Ecto.Schema
+  use Explorer.Schema
 
   alias Explorer.Chain.Block.{EmissionReward, Range}
   alias Explorer.Chain.Wei
@@ -27,7 +27,7 @@ defmodule Explorer.Chain.Block.EmissionReward do
 
   def changeset(%__MODULE__{} = emission_reward, attrs) do
     emission_reward
-    |> cast(attr, [:block_range, :reward])
+    |> cast(attrs, [:block_range, :reward])
     |> validate_required([:block_range, :reward])
   end
 end
diff --git a/apps/explorer/lib/explorer/chain_spec/parity/importer.ex b/apps/explorer/lib/explorer/chain_spec/parity/importer.ex
index a21150b5dd..df4a6a0f68 100644
--- a/apps/explorer/lib/explorer/chain_spec/parity/importer.ex
+++ b/apps/explorer/lib/explorer/chain_spec/parity/importer.ex
@@ -3,7 +3,17 @@ defmodule Explorer.ChainSpec.Parity.Importer do
   Imports data from parity chain spec.
   """
 
-  @max_block_number 9_999_999_999_999_999_999
+  alias Explorer.Repo
+  alias Explorer.Chain.Block.{EmissionReward, Range}
+  alias Explorer.Chain.Wei
+
+  @max_block_number :infinity
+
+  def import_emission_rewards(chain_spec) do
+    rewards = emission_rewards(chain_spec)
+
+    Repo.insert_all(EmissionReward, rewards)
+  end
 
   def emission_rewards(chain_spec) do
     rewards = chain_spec["engine"]["Ethash"]["params"]["blockReward"]
@@ -22,15 +32,17 @@ defmodule Explorer.ChainSpec.Parity.Importer do
   end
 
   defp create_range([{block_number1, reward}, {block_number2, _}]) do
+    block_number1 = if block_number1 != 0, do: block_number1 + 1, else: 0
+
     %{
-      block_range: block_number1..block_number2,
+      block_range: %Range{from: block_number1, to: block_number2},
       reward: reward
     }
   end
 
   defp create_range([{block_number, reward}]) do
     %{
-      block_range: block_number..@max_block_number,
+      block_range: %Range{from: block_number + 1, to: @max_block_number},
       reward: reward
     }
   end
@@ -38,7 +50,7 @@ defmodule Explorer.ChainSpec.Parity.Importer do
   defp parse_hex_numbers(rewards) do
     Enum.map(rewards, fn {hex_block_number, hex_reward} ->
       block_number = parse_hex_number(hex_block_number)
-      reward = parse_hex_number(hex_reward)
+      {:ok, reward} = hex_reward |> parse_hex_number() |> Wei.cast()
 
       {block_number, reward}
     end)
diff --git a/apps/explorer/test/explorer/chain_spec/parity/importer_test.exs b/apps/explorer/test/explorer/chain_spec/parity/importer_test.exs
index 09e328b95b..60be2c688d 100644
--- a/apps/explorer/test/explorer/chain_spec/parity/importer_test.exs
+++ b/apps/explorer/test/explorer/chain_spec/parity/importer_test.exs
@@ -1,6 +1,8 @@
 defmodule Explorer.ChainSpec.Parity.ImporterTest do
-  use ExUnit.Case
+  use Explorer.DataCase
 
+  alias Explorer.Chain.Block.Range
+  alias Explorer.Chain.Wei
   alias Explorer.ChainSpec.Parity.Importer
 
   @chain_spec "#{File.cwd!()}/test/support/fixture/chain_spec/foundation.json"
@@ -10,10 +12,25 @@ defmodule Explorer.ChainSpec.Parity.ImporterTest do
   describe "emission_rewards/1" do
     test "fetches and formats reward ranges" do
       assert Importer.emission_rewards(@chain_spec) == [
-               %{block_range: 0..4_370_000, reward: 5_000_000_000_000_000_000},
-               %{block_range: 4_370_000..7_280_000, reward: 3_000_000_000_000_000_000},
-               %{block_range: 7_280_000..9_999_999_999_999_999_999, reward: 2_000_000_000_000_000_000}
+               %{
+                 block_range: %Range{from: 0, to: 4_370_000},
+                 reward: %Wei{value: Decimal.new(5_000_000_000_000_000_000)}
+               },
+               %{
+                 block_range: %Range{from: 4_370_001, to: 7_280_000},
+                 reward: %Wei{value: Decimal.new(3_000_000_000_000_000_000)}
+               },
+               %{
+                 block_range: %Range{from: 7_280_001, to: :infinity},
+                 reward: %Wei{value: Decimal.new(2_000_000_000_000_000_000)}
+               }
              ]
     end
   end
+
+  describe "import_emission_rewards/1" do
+    test "inserts emission rewards from chain spec" do
+      assert {3, nil} = Importer.import_emission_rewards(@chain_spec)
+    end
+  end
 end