config+pilot: add flag to specify min confs for autopilot agent

config.go

@@ -146,6 +146,7 @@ type autoPilotConfig struct {
 	MinChannelSize int64   `long:"minchansize" description:"The smallest channel that the autopilot agent should create"`
 	MaxChannelSize int64   `long:"maxchansize" description:"The largest channel that the autopilot agent should create"`
 	Private        bool    `long:"private" description:"Whether the channels created by the autopilot agent should be private or not. Private channels won't be announced to the network."`
+	MinConfs       int32   `long:"minconfs" description:"The minimum number of confirmations each of your inputs in funding transactions created by the autopilot agent must have."`
 }
 
 type torConfig struct {
@@ -424,6 +425,12 @@ func loadConfig() (*config, error) {
 		fmt.Fprintln(os.Stderr, err)
 		return nil, err
 	}
+	if cfg.Autopilot.MinConfs < 0 {
+		str := "%s: autopilot.minconfs must be non-negative"
+		err := fmt.Errorf(str, funcName)
+		fmt.Fprintln(os.Stderr, err)
+		return nil, err
+	}
 
 	// Ensure that the specified values for the min and max channel size
 	// don't are within the bounds of the normal chan size constraints.

pilot.go

@@ -19,6 +19,7 @@ import (
 type chanController struct {
 	server   *server
 	private  bool
+	minConfs int32
 }
 
 // OpenChannel opens a channel to a target peer, with a capacity of the
@@ -48,6 +49,7 @@ func (c *chanController) OpenChannel(target *btcec.PublicKey,
 		fundingFeePerKw: feePerKw,
 		private:         c.private,
 		remoteCsvDelay:  0,
+		minConfs:        c.minConfs,
 	}
 
 	updateStream, errChan := c.server.OpenChannel(req)
@@ -112,9 +114,10 @@ func initAutoPilot(svr *server, cfg *autoPilotConfig) (*autopilot.Agent, error)
 		ChanController: &chanController{
 			server:   svr,
 			private:  cfg.Private,
+			minConfs: cfg.MinConfs,
 		},
 		WalletBalance: func() (btcutil.Amount, error) {
-			return svr.cc.wallet.ConfirmedBalance(1)
+			return svr.cc.wallet.ConfirmedBalance(cfg.MinConfs)
 		},
 		Graph:           autopilot.ChannelGraphFromDatabase(svr.chanDB.ChannelGraph()),
 		MaxPendingOpens: 10,