feat(api): add epochs api (#176)

* feat(api): add epochs api

* feat(api): add epoch info api

client/app/app.go

@@ -23,6 +23,7 @@ import (
 
 	"github.com/piplabs/story/client/app/keepers"
 	"github.com/piplabs/story/client/comet"
+	epochskeeper "github.com/piplabs/story/client/x/epochs/keeper"
 	evmstakingkeeper "github.com/piplabs/story/client/x/evmstaking/keeper"
 	mintkeeper "github.com/piplabs/story/client/x/mint/keeper"
 	"github.com/piplabs/story/lib/errors"
@@ -212,3 +213,7 @@ func (a App) GetUpgradeKeeper() *upgradekeeper.Keeper {
 func (a App) GetMintKeeper() mintkeeper.Keeper {
 	return a.Keepers.MintKeeper
 }
+
+func (a App) GetEpochsKeeper() *epochskeeper.Keeper {
+	return a.Keepers.EpochsKeeper
+}

client/server/epochs.go

@@ -0,0 +1,48 @@
+package server
+
+import (
+	"net/http"
+
+	"github.com/gorilla/mux"
+
+	"github.com/piplabs/story/client/server/utils"
+	"github.com/piplabs/story/client/x/epochs/keeper"
+	epochstypes "github.com/piplabs/story/client/x/epochs/types"
+)
+
+func (s *Server) initEpochsRoute() {
+	s.httpMux.HandleFunc("/epochs/epoch_infos", utils.SimpleWrap(s.aminoCodec, s.GetEpochInfos))
+	s.httpMux.HandleFunc("/epochs/epoch_infos/{identifier}", utils.SimpleWrap(s.aminoCodec, s.GetEpochInfo))
+}
+
+// GetEpochInfos queries running epochInfos.
+func (s *Server) GetEpochInfos(r *http.Request) (resp any, err error) {
+	queryContext, err := s.createQueryContextByHeader(r)
+	if err != nil {
+		return nil, err
+	}
+
+	queryResp, err := keeper.NewQuerier(*s.store.GetEpochsKeeper()).GetEpochInfos(queryContext, &epochstypes.GetEpochInfosRequest{})
+	if err != nil {
+		return nil, err
+	}
+
+	return queryResp, nil
+}
+
+// GetEpochInfo queries epoch info of specified identifier.
+func (s *Server) GetEpochInfo(r *http.Request) (resp any, err error) {
+	queryContext, err := s.createQueryContextByHeader(r)
+	if err != nil {
+		return nil, err
+	}
+
+	queryResp, err := keeper.NewQuerier(*s.store.GetEpochsKeeper()).GetEpochInfo(queryContext, &epochstypes.GetEpochInfoRequest{
+		Identifier: mux.Vars(r)["identifier"],
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	return queryResp, nil
+}

client/server/server.go

@@ -27,6 +27,7 @@ import (
 	"github.com/gorilla/handlers"
 	"github.com/gorilla/mux"
 
+	epochskeeper "github.com/piplabs/story/client/x/epochs/keeper"
 	evmstakingkeeper "github.com/piplabs/story/client/x/evmstaking/keeper"
 	mintkeeper "github.com/piplabs/story/client/x/mint/keeper"
 )
@@ -41,6 +42,7 @@ type Store interface {
 	GetDistrKeeper() distrkeeper.Keeper
 	GetUpgradeKeeper() *upgradekeeper.Keeper
 	GetMintKeeper() mintkeeper.Keeper
+	GetEpochsKeeper() *epochskeeper.Keeper
 }
 
 type Server struct {
@@ -124,6 +126,7 @@ func (s *Server) registerHandle() {
 	s.initStakingRoute()
 	s.initUpgradeRoute()
 	s.initMintRoute()
+	s.initEpochsRoute()
 }
 
 func (s *Server) createQueryContextByHeader(r *http.Request) (sdk.Context, error) {

client/x/epochs/keeper/grpc_query.go

@@ -23,29 +23,29 @@ func NewQuerier(k Keeper) Querier {
 	return Querier{Keeper: k}
 }
 
-// EpochInfos provide running epochInfos.
-func (q Querier) EpochInfos(ctx context.Context, _ *types.QueryEpochsInfoRequest) (*types.QueryEpochsInfoResponse, error) {
+// GetEpochInfos provide running epochInfos.
+func (q Querier) GetEpochInfos(ctx context.Context, _ *types.GetEpochInfosRequest) (*types.GetEpochInfosResponse, error) {
 	epochs, err := q.Keeper.AllEpochInfos(ctx)
-	return &types.QueryEpochsInfoResponse{
+	return &types.GetEpochInfosResponse{
 		Epochs: epochs,
 	}, err
 }
 
-// CurrentEpoch provides current epoch of specified identifier.
-func (q Querier) CurrentEpoch(ctx context.Context, req *types.QueryCurrentEpochRequest) (*types.QueryCurrentEpochResponse, error) {
+// GetEpochInfo provide epoch info of specified identifier.
+func (q Querier) GetEpochInfo(ctx context.Context, req *types.GetEpochInfoRequest) (*types.GetEpochInfoResponse, error) {
 	if req == nil {
 		return nil, status.Error(codes.InvalidArgument, "empty request")
 	}
 	if req.Identifier == "" {
 		return nil, status.Error(codes.InvalidArgument, "identifier is empty")
 	}
 
-	info, err := q.Keeper.EpochInfo.Get(ctx, req.Identifier)
+	info, err := q.Keeper.GetEpochInfo(ctx, req.Identifier)
 	if err != nil {
 		return nil, errors.New("not available identifier")
 	}
 
-	return &types.QueryCurrentEpochResponse{
-		CurrentEpoch: info.CurrentEpoch,
+	return &types.GetEpochInfoResponse{
+		Epoch: info,
 	}, nil
 }

client/x/epochs/keeper/grpc_query_test.go

@@ -9,7 +9,7 @@ func (s *KeeperTestSuite) TestQueryEpochInfos() {
 	queryClient := s.queryClient
 
 	// Check that querying epoch infos on default genesis returns the default genesis epoch infos
-	epochInfosResponse, err := queryClient.EpochInfos(s.Ctx, &types.QueryEpochsInfoRequest{})
+	epochInfosResponse, err := queryClient.GetEpochInfos(s.Ctx, &types.GetEpochInfosRequest{})
 	s.Require().NoError(err)
 	s.Require().Len(epochInfosResponse.Epochs, 4)
 	expectedEpochs := types.DefaultGenesis().Epochs