Expose contract deposit balance separately

docs/api/docs.go

@@ -1548,6 +1548,9 @@ const docTemplate = `{
                 "deployer": {
                     "type": "string"
                 },
+                "deposit_balance": {
+                    "type": "number"
+                },
                 "eip_standard": {
                     "type": "string"
                 },

docs/api/swagger.json

@@ -1537,6 +1537,9 @@
                 "deployer": {
                     "type": "string"
                 },
+                "deposit_balance": {
+                    "type": "number"
+                },
                 "eip_standard": {
                     "type": "string"
                 },

docs/api/swagger.yaml

@@ -87,6 +87,8 @@ definitions:
         type: string
       deployer:
         type: string
+      deposit_balance:
+        type: number
       eip_standard:
         type: string
       event_identifiers:

plugins/evm/dao/contract.go

@@ -9,6 +9,8 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/itering/subscan/model"
+	"github.com/itering/subscan/pkg/go-web3/complex/types"
+	"github.com/itering/subscan/pkg/go-web3/dto"
 	evmABI "github.com/itering/subscan/plugins/evm/abi"
 	evmContract "github.com/itering/subscan/plugins/evm/contract"
 	"github.com/itering/subscan/plugins/evm/feature/delegateProxy"
@@ -54,10 +56,11 @@ type Contract struct {
 	Precompile        uint           `json:"precompile"`
 	CompileSettings   datatypes.JSON `json:"CompileSettings"`
 
-	EipStandard          string `json:"eip_standard" gorm:"size:100"`
-	ProxyImplementation  string `json:"proxy_implementation" gorm:"size:64"`
-	ConstructorArguments string `json:"constructor_arguments" gorm:"type:string"`
-	DeployCodeHash       string `json:"deploy_code_hash" gorm:"size:70;index:deploy_code_hash;default:'';not null"`
+	EipStandard          string          `json:"eip_standard" gorm:"size:100"`
+	ProxyImplementation  string          `json:"proxy_implementation" gorm:"size:64"`
+	ConstructorArguments string          `json:"constructor_arguments" gorm:"type:string"`
+	DeployCodeHash       string          `json:"deploy_code_hash" gorm:"size:70;index:deploy_code_hash;default:'';not null"`
+	DepositBalance       decimal.Decimal `json:"deposit_balance" gorm:"-"`
 }
 
 type ContractSampleJson struct {
@@ -285,12 +288,34 @@ func ContractsByAddr(ctx context.Context, contracts string) (contract *Contract)
 		contract = &dbContract
 	}
 
+	if balance, ok := latestEvmContractDepositBalance(ctx, contract.Address); ok {
+		contract.DepositBalance = balance
+	}
+
 	if len(contract.Abi) > 0 && contract.Abi.String() != "null" {
 		contract.EventIdentifiers = findEventIdentifiers(ctx, contract.Abi)
 	}
 	return
 }
 
+func latestEvmContractDepositBalance(ctx context.Context, contractAddress string) (decimal.Decimal, bool) {
+	if web3.RPC == nil || web3.RPC.Eth == nil {
+		return decimal.Zero, false
+	}
+	result, err := web3.RPC.Eth.Call(ctx, &dto.TransactionParameters{
+		To:   contractAddress,
+		Data: types.ComplexString("0xc399ec88"), // getDeposit()
+	})
+	if err != nil || result == nil {
+		return decimal.Zero, false
+	}
+	balance, err := result.ToBigInt()
+	if err != nil || balance == nil {
+		return decimal.Zero, false
+	}
+	return decimal.NewFromBigInt(balance, 0), true
+}
+
 func backfillContractFromRuntimeCode(ctx context.Context, contractAddress string) *Contract {
 	if web3.RPC == nil || web3.RPC.Eth == nil {
 		return nil

plugins/evm/http/contract_e2e_test.go

@@ -0,0 +1,52 @@
+package http
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/itering/subscan/plugins/evm/dao"
+	"github.com/shopspring/decimal"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+type contractRouteMockServer struct {
+	MockServer
+}
+
+func (m contractRouteMockServer) ContractsByAddr(_ context.Context, address string) *dao.Contract {
+	return &dao.Contract{
+		Address:        address,
+		VerifyStatus:   "perfect",
+		DepositBalance: decimal.NewFromInt(2),
+	}
+}
+
+func TestContractRouteReturnsDepositBalance(t *testing.T) {
+	originalSrv := srv
+	srv = contractRouteMockServer{}
+	t.Cleanup(func() { srv = originalSrv })
+
+	request := httptest.NewRequest(
+		http.MethodPost,
+		"/api/plugin/evm/contract",
+		strings.NewReader(`{"address":"0x0000000000000000000000000000000000000002"}`),
+	)
+	recorder := httptest.NewRecorder()
+	require.NoError(t, contractHandle(recorder, request))
+	require.Equal(t, http.StatusOK, recorder.Code)
+
+	var response struct {
+		Code int `json:"code"`
+		Data struct {
+			DepositBalance decimal.Decimal `json:"deposit_balance"`
+		} `json:"data"`
+	}
+	require.NoError(t, json.Unmarshal(recorder.Body.Bytes(), &response))
+	require.Zero(t, response.Code)
+	assert.True(t, response.Data.DepositBalance.Equal(decimal.NewFromInt(2)))
+}

ui-react/src/pages/contract/[id].tsx

@@ -74,6 +74,13 @@ export default function Page() {
                       </div>
                     </div>
                     <Divider className="my-2.5" />
+                    <div className="flex items-center">
+                      <div className="w-48">Deposit Balance</div>
+                      <div>
+                        {formatBalanceAmount(new BigNumber(contractData.deposit_balance || 0), token?.decimals)} {token?.symbol}
+                      </div>
+                    </div>
+                    <Divider className="my-2.5" />
                   </CardBody>
                 </Card>
                 <Card>

ui-react/src/utils/api.ts

@@ -629,6 +629,7 @@ export type pvmContractInfoType = {
     deploy_at: number;
     deploy_code_hash: string;
     deployer: string;
+    deposit_balance: string;
     eip_standard: string;
     event_identifiers: any | null;
     evm_version: string;