Merge pull request #369 from CityOfZion/add_graphql_first_schema

Add graphql first schema

apps/neoscan_web/lib/neoscan_web/resolvers/block.ex

@@ -21,4 +21,16 @@ defmodule NeoscanWeb.Resolvers.Block do
 
     {:ok, resp}
   end
+
+  def get(_, %{params: %{hash: hash}}, _) do
+    block = Blocks.get(hash)
+    if is_nil(block), do: {:error, "block not found"}, else: {:ok, block}
+  end
+
+  def get(_, %{params: %{index: index}}, _) do
+    block = Blocks.get(index)
+    if is_nil(block), do: {:error, "block not found"}, else: {:ok, block}
+  end
+
+  def get(_, _, _), do: {:error, "missing search parameter index or hash"}
 end

apps/neoscan_web/lib/neoscan_web/schema/block_types.ex

@@ -5,20 +5,33 @@ defmodule NeoscanWeb.Schema.BlockTypes do
 
   @desc "Queries for blocks"
   object :block_queries do
-    @desc "Blocks query"
+    @desc """
+      Blocks query.
+      Get blocks, by default you will get the latest 20 blocks
+    """
     field :blocks, :blocks do
       arg(:paginator, :paginator)
       resolve(&Block.all/3)
     end
+
+    @desc """
+      Block query.
+      Get information about one block.
+      Use the filter to get the block using the block by index or hash.
+    """
+    field :block, :block_row do
+      arg(:params, non_null(:params))
+      resolve(&Block.get/3)
+    end
   end
 
-  @desc "Blocks"
+  @desc "Blocks contains rows and pagination data"
   object :blocks do
     field(:block_rows, type: list_of(:block_row))
     field(:pagination, type: :pagination)
   end
 
-  @desc "Block"
+  @desc "a single block row"
   object :block_row do
     field(:cumulative_sys_fee, :decimal)
     field(:gas_generated, :decimal)
@@ -43,4 +56,10 @@ defmodule NeoscanWeb.Schema.BlockTypes do
     field(:invocation, :string)
     field(:verification, :string)
   end
+
+  @desc "parameters used to get a single block"
+  input_object :params do
+    field(:index, :integer)
+    field(:hash, :string)
+  end
 end

apps/neoscan_web/test/neoscan_web/schema/query/block_test.exs

@@ -66,4 +66,109 @@ defmodule NeoscanWeb.Schema.Query.BlockTest do
 
     assert length(rows) == 2
   end
+
+  @query """
+  query Block($params: Params!){
+  block(params: $params){
+      cumulative_sys_fee
+      gasGenerated
+      hash
+      index
+      inserted_at
+      lag
+      merkle_root
+      next_consensus
+      nonce
+      script {
+        invocation
+        verification
+      }
+  }
+  }
+  """
+
+  test "get one block by index", %{conn: conn} do
+    block = insert(:block)
+    index = block.index
+
+    conn =
+      post(
+        conn,
+        "/graphql",
+        %{
+          query: @query,
+          variables: %{
+            params: %{
+              index: index
+            }
+          }
+        }
+      )
+
+    body = json_response(conn, 200)
+
+    assert %{
+             "data" => %{
+               "block" => %{
+                 "cumulative_sys_fee" => _,
+                 "gasGenerated" => _,
+                 "hash" => _,
+                 "index" => ^index,
+                 "inserted_at" => _,
+                 "lag" => _,
+                 "merkle_root" => _,
+                 "next_consensus" => _,
+                 "nonce" => _,
+                 "script" => %{
+                   "invocation" => _,
+                   "verification" => _
+                 }
+               }
+             }
+           } = body
+  end
+
+  test "get one block by hash", %{conn: conn} do
+    block = insert(:block)
+
+    hash =
+      block.hash
+      |> Base.encode16(case: :lower)
+
+    conn =
+      post(
+        conn,
+        "/graphql",
+        %{
+          query: @query,
+          variables: %{
+            params: %{
+              hash: block.hash
+            }
+          }
+        }
+      )
+
+    body = json_response(conn, 200)
+
+    assert %{
+             "data" => %{
+               "block" => %{
+                 "cumulative_sys_fee" => _,
+                 "gasGenerated" => _,
+                 "hash" => ^hash,
+                 "index" => _,
+                 "inserted_at" => _,
+                 "lag" => _,
+                 "merkle_root" => _,
+                 "next_consensus" => _,
+                 "nonce" => _,
+                 "script" => %{
+                   "invocation" => _,
+                   "verification" => _
+                 }
+               }
+             }
+           } = body
+  end
 end