Committee module: query next proposal ID (#1019)

* next-proposal-id cli query

* fix spelling in comments

* next-proposal-id rest query

x/committee/client/cli/query.go

@@ -31,6 +31,7 @@ func GetQueryCmd(queryRoute string, cdc *codec.Codec) *cobra.Command {
 		GetCmdQueryCommittee(queryRoute, cdc),
 		GetCmdQueryCommittees(queryRoute, cdc),
 		// proposals
+		GetCmdQueryNextProposalID(queryRoute, cdc),
 		GetCmdQueryProposal(queryRoute, cdc),
 		GetCmdQueryProposals(queryRoute, cdc),
 		// votes
@@ -115,6 +116,35 @@ func GetCmdQueryCommittees(queryRoute string, cdc *codec.Codec) *cobra.Command {
 //				Proposals
 // ------------------------------------------
 
+// GetCmdQueryNextProposalID implements a query next proposal ID command.
+func GetCmdQueryNextProposalID(queryRoute string, cdc *codec.Codec) *cobra.Command {
+	cmd := &cobra.Command{
+		Use:     "next-proposal-id",
+		Short:   "Query the next proposal ID",
+		Args:    cobra.ExactArgs(0),
+		Example: fmt.Sprintf("%s query %s next-proposal-id", version.ClientName, types.ModuleName),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			cliCtx := context.NewCLIContext().WithCodec(cdc)
+
+			// Query
+			res, _, err := cliCtx.QueryWithData(fmt.Sprintf("custom/%s/%s", queryRoute, types.QueryNextProposalID), nil)
+			if err != nil {
+				return err
+			}
+
+			// Decode and print results
+			var nextProposalID uint64
+			err = cdc.UnmarshalJSON(res, &nextProposalID)
+			if err != nil {
+				return err
+			}
+
+			return cliCtx.PrintOutput(nextProposalID)
+		},
+	}
+	return cmd
+}
+
 // GetCmdQueryProposal implements the query proposal command.
 func GetCmdQueryProposal(queryRoute string, cdc *codec.Codec) *cobra.Command {
 	return &cobra.Command{

x/committee/client/rest/query.go

@@ -17,6 +17,7 @@ import (
 func registerQueryRoutes(cliCtx context.CLIContext, r *mux.Router) {
 	r.HandleFunc(fmt.Sprintf("/%s/committees", types.ModuleName), queryCommitteesHandlerFn(cliCtx)).Methods("GET")
 	r.HandleFunc(fmt.Sprintf("/%s/committees/{%s}", types.ModuleName, RestCommitteeID), queryCommitteeHandlerFn(cliCtx)).Methods("GET")
+	r.HandleFunc(fmt.Sprintf("/%s/next-proposal-id", types.ModuleName), queryNextProposalIdHandlerFn(cliCtx)).Methods("GET")
 	r.HandleFunc(fmt.Sprintf("/%s/committees/{%s}/proposals", types.ModuleName, RestCommitteeID), queryProposalsHandlerFn(cliCtx)).Methods("GET")
 	r.HandleFunc(fmt.Sprintf("/%s/proposals/{%s}", types.ModuleName, RestProposalID), queryProposalHandlerFn(cliCtx)).Methods("GET")
 	r.HandleFunc(fmt.Sprintf("/%s/proposals/{%s}/proposer", types.ModuleName, RestProposalID), queryProposerHandlerFn(cliCtx)).Methods("GET")
@@ -91,6 +92,27 @@ func queryCommitteeHandlerFn(cliCtx context.CLIContext) http.HandlerFunc {
 //				Proposals
 // ------------------------------------------
 
+func queryNextProposalIdHandlerFn(cliCtx context.CLIContext) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		// Parse the query height
+		cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r)
+		if !ok {
+			return
+		}
+
+		// Query
+		res, height, err := cliCtx.QueryWithData(fmt.Sprintf("custom/%s/%s", types.ModuleName, types.QueryNextProposalID), nil)
+		if err != nil {
+			rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error())
+			return
+		}
+
+		// Write response
+		cliCtx = cliCtx.WithHeight(height)
+		rest.PostProcessResponse(w, cliCtx, res)
+	}
+}
+
 func queryProposalsHandlerFn(cliCtx context.CLIContext) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		// Parse the query height

x/committee/legacy/v0_11/types.go

@@ -737,7 +737,7 @@ func addressesEqual(addrs1, addrs2 []sdk.AccAddress) bool {
 	return areEqual
 }
 
-// DefaultNextProposalID is the starting poiint for proposal IDs.
+// DefaultNextProposalID is the starting point for proposal IDs.
 const DefaultNextProposalID uint64 = 1
 
 // GenesisState is state that must be provided at chain genesis.