feat: query earliest attestation nonce (backport celestiaorg#2724) (c…

…elestiaorg#2734)

This is an automatic backport of pull request celestiaorg#2724 done by
[Mergify](https://mergify.com).
Cherry-pick of a3e1da0 has failed:
```
On branch mergify/bp/v1.x/pr-2724
Your branch is up to date with 'origin/v1.x'.

You are currently cherry-picking commit a3e1da0.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   app/test/qgb_rpc_test.go
	modified:   proto/celestia/qgb/v1/query.proto
	modified:   x/qgb/keeper/query_general.go
	modified:   x/qgb/types/query.pb.gw.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   x/qgb/types/query.pb.go

```


To fix up this pull request, you can check it out locally. See
documentation:
https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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---------

Co-authored-by: CHAMI Rachid <[email protected]>

app/test/qgb_rpc_test.go

@@ -50,6 +50,16 @@ func TestQGBRPCQueries(t *testing.T) {
 				return err
 			},
 		},
+		{
+			name: "earliest attestation nonce",
+			req: func() error {
+				_, err := queryClient.EarliestAttestationNonce(
+					context.Background(),
+					&types.QueryEarliestAttestationNonceRequest{},
+				)
+				return err
+			},
+		},
 		{
 			name: "data commitment range for height",
 			req: func() error {

proto/celestia/qgb/v1/query.proto

@@ -31,6 +31,11 @@ service Query {
       returns (QueryLatestAttestationNonceResponse) {
     option (google.api.http).get = "/qgb/v1/attestations/nonce/latest";
   }
+  // EarliestAttestationNonce queries the earliest attestation nonce.
+  rpc EarliestAttestationNonce(QueryEarliestAttestationNonceRequest)
+      returns (QueryEarliestAttestationNonceResponse) {
+    option (google.api.http).get = "/qgb/v1/attestations/nonce/earliest";
+  }
   // LatestValsetRequestBeforeNonce Queries latest Valset request before nonce.
   // And, even if the current nonce is a valset, it will return the previous
   // one.
@@ -93,6 +98,11 @@ message QueryLatestAttestationNonceRequest {}
 // QueryLatestAttestationNonceResponse latest attestation nonce response
 message QueryLatestAttestationNonceResponse { uint64 nonce = 1; }
 
+// QueryEarliestAttestationNonceRequest earliest attestation nonce request
+message QueryEarliestAttestationNonceRequest {}
+// QueryEarliestAttestationNonceResponse earliest attestation nonce response
+message QueryEarliestAttestationNonceResponse { uint64 nonce = 1; }
+
 // QueryLatestValsetRequestBeforeNonceRequest latest Valset request before
 // universal nonce request
 message QueryLatestValsetRequestBeforeNonceRequest { uint64 nonce = 1; }

x/qgb/keeper/query_general.go

@@ -17,6 +17,16 @@ func (k Keeper) LatestUnbondingHeight(
 	}, nil
 }
 
+// EarliestAttestationNonce queries the earliest attestation nonce.
+func (k Keeper) EarliestAttestationNonce(
+	c context.Context,
+	_ *types.QueryEarliestAttestationNonceRequest,
+) (*types.QueryEarliestAttestationNonceResponse, error) {
+	return &types.QueryEarliestAttestationNonceResponse{
+		Nonce: k.GetEarliestAvailableAttestationNonce(sdk.UnwrapSDKContext(c)),
+	}, nil
+}
+
 func (k Keeper) Params(c context.Context, _ *types.QueryParamsRequest) (*types.QueryParamsResponse, error) {
 	params := k.GetParams(sdk.UnwrapSDKContext(c))
 	return &types.QueryParamsResponse{