tidy up

cmd/indexer/internal/clients/block.go

@@ -2,6 +2,7 @@ package clients
 
 import "context"
 
+// BlockByNumber is a client that gets the blocks by number
 type BlockByNumber interface {
 	Get(ctx context.Context, blockNo uint64) (blk interface{}, err error)
 }

cmd/indexer/internal/processor/sequential.go

@@ -8,10 +8,10 @@ import (
 )
 
 type Sequential struct {
-	syncStore datastore.SyncStore
-	protocol  string
-	network   string
+	protocol string
+	network  string
 
+	syncStore      datastore.SyncStore
 	blockProcessor Block
 	blockClient    clients.BlockByNumber
 }
@@ -23,7 +23,6 @@ func (s *Sequential) NextBlock(ctx context.Context) error {
 	}
 	nextBlockNo := blkNo + 1
 
-	// big.NewInt(int64(nextBlockNo))
 	blk, err := s.blockClient.Get(ctx, nextBlockNo)
 	if err != nil {
 		return err

cmd/indexer/internal/processor/transaction.go

@@ -8,13 +8,16 @@ import (
 	"github.com/mailchain/mailchain/internal/encoding"
 )
 
+// Transaction processes transactions
 type Transaction interface {
+	// Run the transaction processor
 	Run(ctx context.Context, protocol, network string, tx interface{}, txOpts TransactionOptions) error
 }
 
 // TransactionOptions related to different transactions
 type TransactionOptions interface{}
 
+// StoreTransaction saves the raw and processed transaction in the datastores.
 func StoreTransaction(ctx context.Context, txStore datastore.TransactionStore, rawTxStore datastore.RawTransactionStore, protocol, network string, tx *datastore.Transaction, rawTx interface{}) error {
 	if bytes.HasPrefix(tx.Data, encoding.DataPrefix()) {
 		if err := rawTxStore.PutRawTransaction(ctx, protocol, network, tx.Hash, rawTx); err != nil {