fix: resolve TODOs on claim

aggsender/aggsender.go

@@ -14,6 +14,7 @@ import (
 	"github.com/0xPolygon/cdk/config/types"
 	"github.com/0xPolygon/cdk/etherman"
 	"github.com/0xPolygon/cdk/log"
+	"github.com/0xPolygon/cdk/tree"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ledgerwatch/erigon-lib/kv"
@@ -218,11 +219,11 @@ func convertBridgeToBridgeExit(bridge *bridgesync.Bridge) *agglayer.BridgeExit {
 func convertClaimToImportedBridgeExit(claim *bridgesync.Claim, bridge *bridgesync.Bridge,
 	bridgeExit *agglayer.BridgeExit) *agglayer.ImportedBridgeExit {
 	return &agglayer.ImportedBridgeExit{
-		BridgeExit: bridgeExit,
-		// ImportedLocalExitRoot: claim.LocalExitRoot, TODO
-		InclusionProof:    claim.ProofLocalExitRoot,
-		InclusionProofRER: claim.ProofRollupExitRoot,
-		GlobalIndex:       claim.GlobalIndex,
+		BridgeExit:            bridgeExit,
+		ImportedLocalExitRoot: tree.CalculateRoot(bridgeExit.Hash(), claim.ProofLocalExitRoot, uint32(claim.GlobalIndex.Uint64())),
+		InclusionProof:        claim.ProofLocalExitRoot,
+		InclusionProofRER:     claim.ProofRollupExitRoot,
+		GlobalIndex:           claim.GlobalIndex,
 	}
 }
 

tree/tree.go

@@ -8,6 +8,7 @@ import (
 
 	dbCommon "github.com/0xPolygon/cdk/common"
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ledgerwatch/erigon-lib/kv"
 	"golang.org/x/crypto/sha3"
 )
@@ -298,3 +299,19 @@ func (t *Tree) GetLeaf(ctx context.Context, index uint32, root common.Hash) (com
 
 	return currentNodeHash, nil
 }
+
+// CalculateRoot calculates the Merkle Root based on the leaf and proof	of inclusion
+func CalculateRoot(leafHash common.Hash, proof [DefaultHeight]common.Hash, index uint32) common.Hash {
+	node := leafHash
+
+	// Compute the Merkle root
+	for height := uint8(0); height < DefaultHeight; height++ {
+		if (index>>height)&1 == 1 {
+			node = crypto.Keccak256Hash(proof[height].Bytes(), node.Bytes())
+		} else {
+			node = crypto.Keccak256Hash(node.Bytes(), proof[height].Bytes())
+		}
+	}
+
+	return node
+}