feat: add dex action field (#1885)

Author: Valentin Atanasov

config/config.exs

@@ -86,4 +86,15 @@ config :ae_mdw, :dex_factories, %{
       107, 208, 117, 185, 160, 135, 239, 247, 134, 40, 7, 80>>
 }
 
+config :ae_mdw, :ae_token, %{
+  # "ct_J3zBY8xxjsRr3QojETNw48Eb38fjvEuJKkQ6KzECvubvEcvCa"
+  "ae_mainnet" =>
+    <<38, 183, 172, 84, 94, 51, 242, 135, 60, 130, 44, 59, 52, 52, 110, 37, 13, 210, 14, 54, 144,
+      24, 53, 177, 117, 211, 247, 18, 109, 117, 189, 41>>,
+  # "ct_JDp175ruWd7mQggeHewSLS1PFXt9AzThCDaFedxon8mF8xTRF"
+  "ae_uat" =>
+    <<39, 26, 34, 124, 164, 250, 243, 90, 198, 12, 74, 70, 137, 147, 70, 150, 174, 68, 138, 188,
+      64, 12, 26, 227, 206, 15, 221, 211, 50, 4, 47, 82>>
+}
+
 import_config "#{Mix.env()}.exs"

docs/swagger_v3/dex.spec.yaml

@@ -23,6 +23,13 @@ schemas:
           amount1_out:
             type: integer
             example: 1000080
+      action:
+        type: string
+        enum:
+          - "SWAP"
+          - "BUY"
+          - "SELL"
+        example: "SWAP"
       caller:
         type: string
         example: "ak_2t7TnocFw7oCYSS7g2yGutZMpGEJta6dq2DTX38SmuqmwtN6Ch"
@@ -67,6 +74,7 @@ schemas:
         example: 123456
     required:
       - amounts
+      - action
       - caller
       - from_token
       - to_token

lib/ae_mdw/dex.ex

@@ -23,6 +23,8 @@ defmodule AeMdw.Dex do
   @contract_swaps_table Model.DexContractSwapTokens
   @swaps_table Model.DexSwapTokens
 
+  @ae_token_contract_pks Application.compile_env(:ae_mdw, :ae_token)
+
   @typep encoded_pubkey() :: Encoding.encoded_hash()
   @typep amount() :: non_neg_integer()
   @typep swap() :: %{
@@ -241,6 +243,7 @@ defmodule AeMdw.Dex do
     } = rendered_amounts = render_amounts(amounts)
 
     %{
+      action: action(token1_pk, token2_pk),
       caller: Encoding.encode(:account_pubkey, caller_pk),
       to_account: Encoding.encode(:account_pubkey, to_pk),
       from_contract: Encoding.encode_contract(token1_pk),
@@ -259,6 +262,16 @@ defmodule AeMdw.Dex do
     }
   end
 
+  defp action(t1, t2) do
+    ae_token = Map.get(@ae_token_contract_pks, :aec_governance.get_network_id())
+
+    case {t1, t2} do
+      {^ae_token, _t2} -> "BUY"
+      {_t1, ^ae_token} -> "SELL"
+      {_t1, _t2} -> "SWAP"
+    end
+  end
+
   defp convert_param({"token_symbol", token_symbol}) when is_binary(token_symbol) do
     case DexCache.get_token_pair_txi(token_symbol) do
       :not_found -> {:error, ErrInput.NotAex9.exception(value: token_symbol)}

test/ae_mdw_web/controllers/dex_controller_test.exs

@@ -807,14 +807,16 @@ defmodule AeMdwWeb.DexControllerTest do
            "to_token" => token2_symbol,
            "tx_hash" => tx_hash,
            "log_idx" => log_idx,
-           "amounts" => amounts
+           "amounts" => amounts,
+           "action" => action
          },
          exp_token1,
          exp_token2
        ) do
     <<txi::256>> = Validate.id!(tx_hash)
 
     caller_id in @accounts and token1_symbol == exp_token1 and
+      action in ["SELL", "BUY", "SWAP"] and
       token2_symbol == exp_token2 and txi in 1_000_001..1_000_080 and log_idx == rem(txi, 2) and
       amounts == %{
         "amount0_in" => txi + 10,