fix(runes): handling latest block not found

Co-authored-by: Gaze <[email protected]>

modules/runes/api/httphandler/get_current_block.go

@@ -1,10 +1,28 @@
 package httphandler
 
 import (
+	"github.com/Cleverse/go-utilities/utils"
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
 	"github.com/cockroachdb/errors"
+	"github.com/gaze-network/indexer-network/common"
+	"github.com/gaze-network/indexer-network/common/errs"
+	"github.com/gaze-network/indexer-network/core/types"
 	"github.com/gofiber/fiber/v2"
 )
 
+var startingBlockHeader = map[common.Network]types.BlockHeader{
+	common.NetworkMainnet: {
+		Height:    839999,
+		Hash:      *utils.Must(chainhash.NewHashFromStr("0000000000000000000172014ba58d66455762add0512355ad651207918494ab")),
+		PrevBlock: *utils.Must(chainhash.NewHashFromStr("00000000000000000001dcce6ce7c8a45872cafd1fb04732b447a14a91832591")),
+	},
+	common.NetworkTestnet: {
+		Height:    2583200,
+		Hash:      *utils.Must(chainhash.NewHashFromStr("000000000006c5f0dfcd9e0e81f27f97a87aef82087ffe69cd3c390325bb6541")),
+		PrevBlock: *utils.Must(chainhash.NewHashFromStr("00000000000668f3bafac992f53424774515440cb47e1cb9e73af3f496139e28")),
+	},
+}
+
 type getCurrentBlockResult struct {
 	Hash   string `json:"hash"`
 	Height int64  `json:"height"`
@@ -15,7 +33,10 @@ type getCurrentBlockResponse = HttpResponse[getCurrentBlockResult]
 func (h *HttpHandler) GetCurrentBlock(ctx *fiber.Ctx) (err error) {
 	blockHeader, err := h.usecase.GetLatestBlock(ctx.UserContext())
 	if err != nil {
-		return errors.Wrap(err, "error during GetLatestBlock")
+		if !errors.Is(err, errs.NotFound) {
+			return errors.Wrap(err, "error during GetLatestBlock")
+		}
+		blockHeader = startingBlockHeader[h.network]
 	}
 
 	resp := getCurrentBlockResponse{