contractcourt: add resolver report function to ContractReport

Our current set of reports contain much of the information we will
need to persist contract resolutions. We add a function to create
resolver reports from our exiting set of resolutions.

contractcourt/channel_arbitrator.go

@@ -8,6 +8,7 @@ import (
 	"sync/atomic"
 	"time"
 
+	"github.com/btcsuite/btcd/chaincfg/chainhash"
 	"github.com/btcsuite/btcd/wire"
 	"github.com/btcsuite/btcutil"
 	"github.com/davecgh/go-spew/spew"
@@ -204,6 +205,21 @@ type ContractReport struct {
 	RecoveredBalance btcutil.Amount
 }
 
+// resolverReport creates a resolve report using some of the information in the
+// contract report.
+func (c *ContractReport) resolverReport(spendTx *chainhash.Hash,
+	resolverType channeldb.ResolverType,
+	outcome channeldb.ResolverOutcome) *channeldb.ResolverReport {
+
+	return &channeldb.ResolverReport{
+		OutPoint:        c.Outpoint,
+		Amount:          c.Amount,
+		ResolverType:    resolverType,
+		ResolverOutcome: outcome,
+		SpendTxID:       spendTx,
+	}
+}
+
 // htlcSet represents the set of active HTLCs on a given commitment
 // transaction.
 type htlcSet struct {