From c57e9aa4379acf17aaa389b364185bc49c68cc39 Mon Sep 17 00:00:00 2001
From: ptrus <peter@u-s.si>
Date: Fri, 24 Nov 2023 17:18:03 +0100
Subject: [PATCH] cmd/network/governance: Parameter change proposal support

---
 cmd/network/governance/create.go | 60 ++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/cmd/network/governance/create.go b/cmd/network/governance/create.go
index d6d34dbd..4389ffbf 100644
--- a/cmd/network/governance/create.go
+++ b/cmd/network/governance/create.go
@@ -9,6 +9,7 @@ import (
 
 	"github.com/spf13/cobra"
 
+	"github.com/oasisprotocol/oasis-core/go/common/cbor"
 	governance "github.com/oasisprotocol/oasis-core/go/governance/api"
 	upgrade "github.com/oasisprotocol/oasis-core/go/upgrade/api"
 	"github.com/oasisprotocol/oasis-sdk/client-sdk/go/connection"
@@ -74,6 +75,61 @@ var (
 		},
 	}
 
+	govCreateProposalParameterChangeCmd = &cobra.Command{
+		Use:   "parameter-change <module> <changes.json>",
+		Short: "Create a parameter change governance proposal",
+		Args:  cobra.ExactArgs(2),
+		Run: func(cmd *cobra.Command, args []string) {
+			cfg := cliConfig.Global()
+			npa := common.GetNPASelection(cfg)
+			txCfg := common.GetTransactionConfig()
+
+			module := args[0]
+			changesJSON := args[1]
+
+			if npa.Account == nil {
+				cobra.CheckErr("no accounts configured in your wallet")
+			}
+
+			// When not in offline mode, connect to the given network endpoint.
+			ctx := context.Background()
+			var conn connection.Connection
+			if !txCfg.Offline {
+				var err error
+				conn, err = connection.Connect(ctx, npa.Network)
+				cobra.CheckErr(err)
+			}
+
+			// Load changes json.
+			rawChanges, err := os.ReadFile(changesJSON)
+			cobra.CheckErr(err)
+
+			// Parse upgrade descriptor.
+			var changes map[string]interface{}
+			if err = json.Unmarshal(rawChanges, &changes); err != nil {
+				cobra.CheckErr(fmt.Errorf("malformed parameter upgrade proposal: %w", err))
+			}
+			content := &governance.ChangeParametersProposal{
+				Module:  module,
+				Changes: cbor.Marshal(changes),
+			}
+			if err := content.ValidateBasic(); err != nil {
+				cobra.CheckErr(fmt.Errorf("invalid parameter upgrade proposal: %w", err))
+			}
+
+			// Prepare transaction.
+			tx := governance.NewSubmitProposalTx(0, nil, &governance.ProposalContent{
+				ChangeParameters: content,
+			})
+
+			acc := common.LoadAccount(cfg, npa.AccountName)
+			sigTx, err := common.SignConsensusTransaction(ctx, npa, acc, conn, tx)
+			cobra.CheckErr(err)
+
+			common.BroadcastOrExportTransaction(ctx, npa.ParaTime, conn, sigTx, nil, nil)
+		},
+	}
+
 	govCreateProposalCancelUpgradeCmd = &cobra.Command{
 		Use:   "cancel-upgrade <proposal-id>",
 		Short: "Create a cancel upgrade governance proposal",
@@ -121,9 +177,13 @@ func init() {
 	govCreateProposalUpgradeCmd.Flags().AddFlagSet(common.SelectorNAFlags)
 	govCreateProposalUpgradeCmd.Flags().AddFlagSet(common.TxFlags)
 
+	govCreateProposalParameterChangeCmd.Flags().AddFlagSet(common.SelectorNAFlags)
+	govCreateProposalUpgradeCmd.Flags().AddFlagSet(common.TxFlags)
+
 	govCreateProposalCancelUpgradeCmd.Flags().AddFlagSet(common.SelectorNAFlags)
 	govCreateProposalCancelUpgradeCmd.Flags().AddFlagSet(common.TxFlags)
 
 	govCreateProposalCmd.AddCommand(govCreateProposalUpgradeCmd)
+	govCreateProposalCmd.AddCommand(govCreateProposalParameterChangeCmd)
 	govCreateProposalCmd.AddCommand(govCreateProposalCancelUpgradeCmd)
 }