cmd/loop: add fast option to quote cmd

cmd/loop/quote.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"context"
+	"time"
 
 	"github.com/lightninglabs/loop/looprpc"
 	"github.com/urfave/cli"
@@ -20,6 +21,16 @@ var quoteCommand = cli.Command{
 				"should be swept within in a Loop Out",
 			Value: 6,
 		},
+		cli.BoolFlag{
+			Name: "fast",
+			Usage: "Indicate you want to swap immediately, " +
+				"paying potentially a higher fee. If not " +
+				"set the swap server might choose to wait up " +
+				"to 30 minutes before publishing the swap " +
+				"HTLC on-chain, to save on chain fees. Not " +
+				"setting this flag might result in a lower " +
+				"swap fee.",
+		},
 	},
 	Action: quote,
 }
@@ -43,10 +54,17 @@ func quote(ctx *cli.Context) error {
 	}
 	defer cleanup()
 
+	fast := ctx.Bool("fast")
+	swapDeadline := time.Now()
+	if !fast {
+		swapDeadline = time.Now().Add(defaultSwapWaitTime)
+	}
+
 	ctxb := context.Background()
 	resp, err := client.LoopOutQuote(ctxb, &looprpc.QuoteRequest{
-		Amt:        int64(amt),
-		ConfTarget: int32(ctx.Uint64("conf_target")),
+		Amt:                     int64(amt),
+		ConfTarget:              int32(ctx.Uint64("conf_target")),
+		SwapPublicationDeadline: uint64(swapDeadline.Unix()),
 	})
 	if err != nil {
 		return err