refactor(x/ecocredit): convert class fee argument to optional flag

CHANGELOG.md

@@ -146,6 +146,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [#1429](https://github.com/regen-network/regen-ledger/pull/1429) Migrated `ecocredit/simulation` core operations to `ecocredit/base/simulation`
 - [#1447](https://github.com/regen-network/regen-ledger/pull/1447) Rename `CoreKeeper` to `BaseKeeper`
 - [#1452](https://github.com/regen-network/regen-ledger/pull/1452) Migrated `BeginBlocker` to `ecocredit/module`
+- [#1475](https://github.com/regen-network/regen-ledger/pull/1475) Convert `CreateClass` command `fee` argument to optional flag
 
 ### Fixed
 

x/ecocredit/base/client/tx.go

@@ -23,12 +23,13 @@ const (
 	FlagRemoveIssuers          string = "remove-issuers"
 	FlagReferenceID            string = "reference-id"
 	FlagRetirementJurisdiction string = "retirement-jurisdiction"
+	FlagClassFee               string = "class-fee"
 )
 
 // TxCreateClassCmd returns a transaction command that creates a credit class.
 func TxCreateClassCmd() *cobra.Command {
 	cmd := &cobra.Command{
-		Use:   "create-class [issuers] [credit-type-abbrev] [metadata] [fee] [flags]",
+		Use:   "create-class [issuers] [credit-type-abbrev] [metadata] [flags]",
 		Short: "Creates a new credit class with transaction author (--from) as admin",
 		Long: fmt.Sprintf(`Creates a new credit class with transaction author (--from) as admin.
 
@@ -44,13 +45,21 @@ Parameters:
 - issuers:    	       comma separated (no spaces) list of issuer account addresses
 - credit-type-abbrev:  the abbreviation of a credit type
 - metadata:            arbitrary data attached to the credit class info
-- fee:                 fee to pay for the creation of the credit class`,
+
+Flags:
+
+- class-fee: the fee that the class creator will pay to create the credit class. It must be >= the
+    required credit_class_fee param. We include the fee explicitly here so that the
+    class creator explicitly acknowledges paying this fee and is not surprised to learn that they
+    paid a big fee and didn't know beforehand.
+
+`,
 			types.KeyAllowedClassCreators,
 			types.KeyCreditClassFee,
 		),
-		Example: `regen tx ecocredit create-class regen1elq7ys34gpkj3jyvqee0h6yk4h9wsfxmgqelsw C regen:13toVgf5UjYBz6J29x28pLQyjKz5FpcW3f4bT5uRKGxGREWGKjEdXYG.rdf 20000000uregen
-regen tx ecocredit create-class regen1elq7ys34gpkj3jyvqee0h6yk4h9wsfxmgqelsw,regen1depk54cuajgkzea6zpgkq36tnjwdzv4ak663u6 C regen:13toVgf5UjYBz6J29x28pLQyjKz5FpcW3f4bT5uRKGxGREWGKjEdXYG.rdf 20000000uregen`,
-		Args: cobra.ExactArgs(4),
+		Example: `regen tx ecocredit create-class regen1elq7ys34gpkj3jyvqee0h6yk4h9wsfxmgqelsw C regen:13toVgf5UjYBz6J29x28pLQyjKz5FpcW3f4bT5uRKGxGREWGKjEdXYG.rdf --class-fee 20000000uregen
+regen tx ecocredit create-class regen1elq7ys34gpkj3jyvqee0h6yk4h9wsfxmgqelsw,regen1depk54cuajgkzea6zpgkq36tnjwdzv4ak663u6 C regen:13toVgf5UjYBz6J29x28pLQyjKz5FpcW3f4bT5uRKGxGREWGKjEdXYG.rdf --class-fee 20000000uregen`,
+		Args: cobra.ExactArgs(3),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			clientCtx, err := sdkclient.GetClientTxContext(cmd)
 			if err != nil {
@@ -67,10 +76,17 @@ regen tx ecocredit create-class regen1elq7ys34gpkj3jyvqee0h6yk4h9wsfxmgqelsw,reg
 			}
 
 			// Parse and normalize credit class fee
-			fee, err := sdk.ParseCoinNormalized(args[3])
+			var fee sdk.Coin
+			feeString, err := cmd.Flags().GetString(FlagClassFee)
 			if err != nil {
 				return err
 			}
+			if feeString != "" {
+				fee, err = sdk.ParseCoinNormalized(feeString)
+				if err != nil {
+					return fmt.Errorf("failed to parse class-fee: %w", err)
+				}
+			}
 
 			msg := types.MsgCreateClass{
 				Admin:            admin.String(),
@@ -84,6 +100,8 @@ regen tx ecocredit create-class regen1elq7ys34gpkj3jyvqee0h6yk4h9wsfxmgqelsw,reg
 		},
 	}
 
+	cmd.Flags().String(FlagClassFee, "", "the fee that the class creator will pay to create the credit class (e.g. \"20regen\")")
+
 	return txFlags(cmd)
 }
 

x/ecocredit/basket/client/tx.go

@@ -46,7 +46,7 @@ Flags:
     false unless the credits were previously put into the basket by the address
     picking them from the basket, in which case they will remain tradable.
 - credit-type-abbrev: filters against credits from this credit type abbreviation (e.g. "BIO").
-- allowed_classes: comma separated (no spaces) list of credit classes allowed to be put in
+- allowed-classes: comma separated (no spaces) list of credit classes allowed to be put in
     the basket (e.g. "C01,C02").
 - min-start-date: the earliest start date for batches of credits allowed into the basket.
 - start-date-window: the duration of time (in seconds) measured into the past which sets a
@@ -56,7 +56,7 @@ Flags:
     curator explicitly acknowledges paying this fee and is not surprised to learn that they
     paid a big fee and didn't know beforehand.
 - description: the description to be used in the basket coin's bank denom metadata.`),
-		Example: `regen tx ecocredit create-basket NCT --credit-type-abbrev C --allowed_classes C01,C02 basket-fee 100000000uregen description "NCT basket"`,
+		Example: `regen tx ecocredit create-basket NCT --credit-type-abbrev C --allowed-classes C01,C02 --basket-fee 100000000uregen --description "NCT basket"`,
 		Args:    cobra.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			clientCtx, err := client.GetClientTxContext(cmd)

x/ecocredit/client/testsuite/suite.go

@@ -50,7 +50,7 @@ type IntegrationTestSuite struct {
 	addr2 sdk.AccAddress
 
 	// test values
-	creditClassFee     sdk.Coins
+	creditClassFee     *sdk.Coin
 	basketFee          sdk.Coins
 	creditTypeAbbrev   string
 	allowedDenoms      []string
@@ -92,7 +92,7 @@ func (s *IntegrationTestSuite) SetupSuite() {
 		Issuers:          []string{s.addr1.String()},
 		Metadata:         "metadata",
 		CreditTypeAbbrev: s.creditTypeAbbrev,
-		Fee:              &s.creditClassFee[0],
+		Fee:              s.creditClassFee,
 	})
 
 	// set test reference id
@@ -260,15 +260,9 @@ func (s *IntegrationTestSuite) setupGenesis() {
 	err = mdb.ExportJSON(ctx, target)
 	require.NoError(err)
 
-	params := genesis.DefaultParams()
-
 	// set credit class and basket fees
-	s.creditClassFee = params.CreditClassFee
-	s.basketFee = params.BasketFee
-
-	// merge the params into the json target
-	err = genesis.MergeParamsIntoTarget(s.cfg.Codec, &params, target)
-	require.NoError(err)
+	s.creditClassFee = genesis.DefaultClassFee().Fee
+	s.basketFee = sdk.NewCoins(*genesis.DefaultBasketFee().Fee)
 
 	// get raw json from target
 	json, err := target.JSON()
@@ -336,8 +330,8 @@ func (s *IntegrationTestSuite) createClass(clientCtx client.Context, msg *basety
 		strings.Join(msg.Issuers, ","),
 		msg.CreditTypeAbbrev,
 		msg.Metadata,
-		msg.Fee.String(),
 		fmt.Sprintf("--%s=%s", flags.FlagFrom, msg.Admin),
+		fmt.Sprintf("--%s=%s", baseclient.FlagClassFee, msg.Fee.String()),
 	}
 	args = append(args, s.commonTxFlags()...)
 	out, err := cli.ExecTestCLICmd(clientCtx, cmd, args)

x/ecocredit/client/testsuite/tx.go

@@ -30,21 +30,21 @@ func (s *IntegrationTestSuite) TestTxCreateClassCmd() {
 			name:      "missing args",
 			args:      []string{},
 			expErr:    true,
-			expErrMsg: "Error: accepts 4 arg(s), received 0",
+			expErrMsg: "Error: accepts 3 arg(s), received 0",
 		},
 		{
 			name:      "too many args",
-			args:      []string{"foo", "bar", "baz", "bar", "foo"},
+			args:      []string{"foo", "bar", "baz", "bar"},
 			expErr:    true,
-			expErrMsg: "Error: accepts 4 arg(s), received 5",
+			expErrMsg: "Error: accepts 3 arg(s), received 4",
 		},
 		{
 			name: "missing from flag",
 			args: []string{
 				admin,
 				s.creditTypeAbbrev,
 				"metadata",
-				creditClassFee,
+				fmt.Sprintf("--%s=%s", client.FlagClassFee, creditClassFee),
 			},
 			expErr:    true,
 			expErrMsg: "Error: required flag(s) \"from\" not set",
@@ -55,8 +55,8 @@ func (s *IntegrationTestSuite) TestTxCreateClassCmd() {
 				admin,
 				s.creditTypeAbbrev,
 				"metadata",
-				"foo",
 				fmt.Sprintf("--%s=%s", flags.FlagFrom, admin),
+				fmt.Sprintf("--%s=%s", client.FlagClassFee, "foo"),
 			},
 			expErr:    true,
 			expErrMsg: "invalid decimal coin expression",
@@ -67,8 +67,8 @@ func (s *IntegrationTestSuite) TestTxCreateClassCmd() {
 				admin,
 				s.creditTypeAbbrev,
 				"metadata",
-				creditClassFee,
 				fmt.Sprintf("--%s=%s", flags.FlagFrom, admin),
+				fmt.Sprintf("--%s=%s", client.FlagClassFee, creditClassFee),
 			},
 		},
 		{
@@ -77,8 +77,8 @@ func (s *IntegrationTestSuite) TestTxCreateClassCmd() {
 				admin,
 				s.creditTypeAbbrev,
 				"metadata",
-				creditClassFee,
 				fmt.Sprintf("--%s=%s", flags.FlagFrom, s.val.Moniker),
+				fmt.Sprintf("--%s=%s", client.FlagClassFee, creditClassFee),
 			},
 		},
 		{
@@ -87,11 +87,23 @@ func (s *IntegrationTestSuite) TestTxCreateClassCmd() {
 				admin,
 				s.creditTypeAbbrev,
 				"metadata",
-				creditClassFee,
 				fmt.Sprintf("--%s=%s", flags.FlagFrom, admin),
 				fmt.Sprintf("--%s=%s", flags.FlagSignMode, flags.SignModeLegacyAminoJSON),
+				fmt.Sprintf("--%s=%s", client.FlagClassFee, creditClassFee),
 			},
 		},
+		{
+			name: "fee cannot be empty",
+			args: []string{
+				admin,
+				s.creditTypeAbbrev,
+				"metadata",
+				fmt.Sprintf("--%s=%s", flags.FlagFrom, admin),
+				fmt.Sprintf("--%s=%s", flags.FlagSignMode, flags.SignModeLegacyAminoJSON),
+			},
+			expErr:    true,
+			expErrMsg: "fee denom cannot be empty: invalid request",
+		},
 	}
 
 	for _, tc := range testCases {
@@ -797,7 +809,7 @@ func (s *IntegrationTestSuite) TestTxUpdateClassAdmin() {
 		Issuers:          []string{admin},
 		Metadata:         "metadata",
 		CreditTypeAbbrev: s.creditTypeAbbrev,
-		Fee:              &s.creditClassFee[0],
+		Fee:              s.creditClassFee,
 	})
 
 	// create new credit class to not interfere with other tests
@@ -806,7 +818,7 @@ func (s *IntegrationTestSuite) TestTxUpdateClassAdmin() {
 		Issuers:          []string{admin},
 		Metadata:         "metadata",
 		CreditTypeAbbrev: s.creditTypeAbbrev,
-		Fee:              &s.creditClassFee[0],
+		Fee:              s.creditClassFee,
 	})
 
 	// create new credit class to not interfere with other tests
@@ -815,7 +827,7 @@ func (s *IntegrationTestSuite) TestTxUpdateClassAdmin() {
 		Issuers:          []string{admin},
 		Metadata:         "metadata",
 		CreditTypeAbbrev: s.creditTypeAbbrev,
-		Fee:              &s.creditClassFee[0],
+		Fee:              s.creditClassFee,
 	})
 
 	testCases := []struct {