refactor(evm): scaffold 18 decimal

evm/CHANGELOG.md

@@ -1,5 +1,10 @@
 # EVM App Changelog
 
+## [`v0.1.2`](https://github.com/ignite/apps/releases/tag/evm/v0.1.2)
+
+- [#239](https://github.com/ignite/apps/pull/239) Set default token decimal to 18 as recommended.
+- [#239](https://github.com/ignite/apps/pull/239) Fix export genesis for ibc transfer wrapped module.
+
 ## [`v0.1.1`](https://github.com/ignite/apps/releases/tag/evm/v0.1.1)
 
 - [#235](https://github.com/ignite/apps/pull/235) Wire EVM mempool and correct start command.

evm/go.mod

@@ -3,6 +3,8 @@ module github.com/ignite/apps/evm
 go 1.24.1
 
 require (
+	cosmossdk.io/math v1.5.3
+	github.com/cosmos/cosmos-sdk v0.53.4
 	github.com/gobuffalo/genny/v2 v2.1.0
 	github.com/gobuffalo/plush/v4 v4.1.22
 	github.com/hashicorp/go-plugin v1.6.3
@@ -17,7 +19,6 @@ require (
 	cosmossdk.io/depinject v1.2.1 // indirect
 	cosmossdk.io/errors v1.0.2 // indirect
 	cosmossdk.io/log v1.6.1 // indirect
-	cosmossdk.io/math v1.5.3 // indirect
 	cosmossdk.io/schema v1.1.0 // indirect
 	cosmossdk.io/store v1.1.2 // indirect
 	cosmossdk.io/x/tx v0.14.0 // indirect
@@ -61,7 +62,6 @@ require (
 	github.com/cosmos/btcutil v1.0.5 // indirect
 	github.com/cosmos/cosmos-db v1.1.1 // indirect
 	github.com/cosmos/cosmos-proto v1.0.0-beta.5 // indirect
-	github.com/cosmos/cosmos-sdk v0.53.4 // indirect
 	github.com/cosmos/go-bip39 v1.0.0 // indirect
 	github.com/cosmos/gogogateway v1.2.0 // indirect
 	github.com/cosmos/gogoproto v1.7.0 // indirect

evm/template/generator.go

@@ -3,12 +3,17 @@ package template
 import (
 	"embed"
 	"io/fs"
+	"math"
 	"os"
 	"path/filepath"
 
 	"github.com/gobuffalo/genny/v2"
 	"github.com/gobuffalo/plush/v4"
 
+	sdkmath "cosmossdk.io/math"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+
+	configchain "github.com/ignite/cli/v29/ignite/config/chain"
 	"github.com/ignite/cli/v29/ignite/pkg/errors"
 	"github.com/ignite/cli/v29/ignite/pkg/gomodule"
 	"github.com/ignite/cli/v29/ignite/pkg/gomodulepath"
@@ -53,6 +58,10 @@ func NewEVMGenerator(chain *chain.Chain) (*genny.Generator, error) {
 		return nil, errors.Errorf("failed to update go.mod: %w", err)
 	}
 
+	if err := updateConfigYaml(chain); err != nil {
+		return nil, errors.Errorf("failed to update config.yaml: %w", err)
+	}
+
 	g.RunFn(commandsModify(appPath, binaryName))
 	g.RunFn(rootModify(appPath, binaryName))
 	g.RunFn(appModify(appPath, binaryName))
@@ -82,3 +91,28 @@ func updateDependencies(appPath string) error {
 
 	return os.WriteFile(filepath.Join(appPath, "go.mod"), data, 0o644)
 }
+
+const defaultValPower = 1
+
+// updateConfigYaml updates the default bond tokens.
+// this is required as the chain uses 18 decimals.
+func updateConfigYaml(c *chain.Chain) error {
+	igniteConfig, err := c.Config()
+	if err != nil {
+		return err
+	}
+
+	coins := sdk.NewCoin(igniteConfig.DefaultDenom, sdkmath.NewInt((defaultValPower * int64(math.Pow10(18)))))
+	igniteConfig.Validators[0].Bonded = coins.String()
+	for i, account := range igniteConfig.Accounts {
+		if account.Name == igniteConfig.Validators[0].Name {
+			igniteConfig.Accounts[i].Coins = []string{coins.String()}
+		}
+	}
+
+	if err := configchain.Save(*igniteConfig, c.ConfigPath()); err != nil {
+		return err
+	}
+
+	return nil
+}

evm/template/generator_app.go

@@ -21,6 +21,8 @@ func appModify(appPath, binaryName string) genny.RunFn {
 		// change imports
 		content, err := xast.AppendImports(
 			f.String(),
+			xast.WithImport("math/big"),
+			xast.WithImport("cosmossdk.io/math"),
 			xast.WithNamedImport("feegrantkeeper", "cosmossdk.io/x/feegrant/keeper"),
 			xast.WithNamedImport("_", "github.com/ethereum/go-ethereum/eth/tracers/js"),
 			xast.WithNamedImport("_", "github.com/ethereum/go-ethereum/eth/tracers/native"),
@@ -53,6 +55,22 @@ func appModify(appPath, binaryName string) genny.RunFn {
 			1,
 		)
 
+		// change decimal to 18
+		content, err = xast.InsertGlobal(
+			content,
+			xast.GlobalTypeConst,
+			xast.WithGlobal("BaseDenomUnit", "int64", "18"),
+		)
+
+		content, err = xast.ModifyFunction(
+			content,
+			"init",
+			xast.AppendFuncCode(`// Update power reduction for 18-decimal base unit
+    sdk.DefaultPowerReduction = math.NewIntFromBigInt(
+        new(big.Int).Exp(big.NewInt(10), big.NewInt(BaseDenomUnit), nil),
+    )`),
+		)
+
 		// append modules
 		content, err = xast.ModifyStruct(
 			content,

evm/template/generator_cmd.go

@@ -77,6 +77,9 @@ func rootModify(appPath, binaryName string) genny.RunFn {
 		content, err := xast.AppendImports(
 			f.String(),
 			xast.WithNamedImport("cosmosevmkeyring", "github.com/cosmos/evm/crypto/keyring"),
+			xast.WithNamedImport("ibctransferevm", "github.com/cosmos/evm/x/ibc/transfer"),
+			xast.WithNamedImport("ibctransfer", "github.com/cosmos/ibc-go/v10/modules/apps/transfer"),
+			xast.WithNamedImport("ibctransfertypes", "github.com/cosmos/ibc-go/v10/modules/apps/transfer/types"),
 		)
 		if err != nil {
 			return err
@@ -97,6 +100,10 @@ func rootModify(appPath, binaryName string) genny.RunFn {
 				for name, mod := range evmModules {
 					moduleBasicManager[name] = module.CoreAppModuleBasicAdaptor(name, mod)
 					autoCliOpts.Modules[name] = mod
+				}
+				// Fix basic manager transfer wrapping
+				moduleBasicManager[ibctransfertypes.ModuleName] = ibctransferevm.AppModuleBasic{
+					AppModuleBasic: &ibctransfer.AppModuleBasic{},
 				}`,
 				5),
 		)

evolve/cmd/init.go

@@ -63,7 +63,7 @@ func initEVABCI(
 			return err
 		}
 
-		coins := sdk.NewCoin("stake", sdkmath.NewInt((defaultValPower * int64(math.Pow10(6)))))
+		coins := sdk.NewCoin(igniteConfig.DefaultDenom, sdkmath.NewInt((defaultValPower * int64(math.Pow10(6)))))
 		igniteConfig.Validators[0].Bonded = coins.String()
 		for i, account := range igniteConfig.Accounts {
 			if account.Name == igniteConfig.Validators[0].Name {