From 6a09ae5546b6badc410ee617a34971a3fc138d52 Mon Sep 17 00:00:00 2001
From: Alex Grintsvayg <git@grin.io>
Date: Fri, 3 Nov 2017 08:46:27 -0400
Subject: [PATCH] start-to-finish sync of a single channel

---
 ytsync.go | 136 ++++++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 126 insertions(+), 10 deletions(-)

diff --git a/ytsync.go b/ytsync.go
index 94e0170..29b4e66 100644
--- a/ytsync.go
+++ b/ytsync.go
@@ -6,6 +6,7 @@ import (
 	"io/ioutil"
 	"net/http"
 	"os"
+	"os/exec"
 	"sort"
 	"strconv"
 	"strings"
@@ -18,6 +19,7 @@ import (
 	"github.com/garyburd/redigo/redis"
 	"github.com/go-errors/errors"
 	ytdl "github.com/kkdai/youtube"
+	"github.com/lbryio/lbry.go/lbrycrd"
 	"github.com/shopspring/decimal"
 	log "github.com/sirupsen/logrus"
 	"google.golang.org/api/googleapi/transport"
@@ -46,6 +48,20 @@ type Sync struct {
 	redisPool      *redis.Pool
 }
 
+func (s *Sync) initDaemon() {
+	if s.daemon == nil {
+		s.daemon = jsonrpc.NewClient("")
+		log.Infoln("Waiting for daemon to finish starting...")
+		for {
+			_, err := s.daemon.WalletBalance()
+			if err == nil {
+				break
+			}
+			time.Sleep(2 * time.Second)
+		}
+	}
+}
+
 func (s *Sync) init() error {
 	var err error
 
@@ -67,15 +83,15 @@ func (s *Sync) init() error {
 		return errors.Wrap(err, 0)
 	}
 
-	s.daemon = jsonrpc.NewClient("")
+	s.initDaemon()
 
-	addresses, err := s.daemon.WalletList()
+	address, err := s.daemon.WalletUnusedAddress()
 	if err != nil {
 		return err
-	} else if addresses == nil || len(*addresses) == 0 {
-		return errors.New("could not find an address in wallet")
+	} else if address == nil {
+		return errors.New("could not get unused address")
 	}
-	s.claimAddress = (*addresses)[0]
+	s.claimAddress = string(*address)
 	if s.claimAddress == "" {
 		return errors.New("found blank claim address")
 	}
@@ -117,6 +133,81 @@ func (s *Sync) CountVideos() (uint64, error) {
 	return response.Items[0].Statistics.VideoCount, nil
 }
 
+func (s *Sync) FullCycle() error {
+	walletDir := os.Getenv("HOME") + "/wallets/" + strings.Replace(s.LbryChannelName, "@", "", 1)
+	if _, err := os.Stat(walletDir); !os.IsNotExist(err) {
+		return errors.New("channel has already been uploaded, and wallet is in " + walletDir)
+	}
+
+	err := s.startDaemonViaSystemd()
+	if err != nil {
+		return err
+	}
+
+	s.initDaemon()
+
+	addressResp, err := s.daemon.WalletUnusedAddress()
+	if err != nil {
+		return err
+	} else if addressResp == nil {
+		return errors.New("no response")
+	}
+	address := string(*addressResp)
+
+	count, err := s.CountVideos()
+	if err != nil {
+		return err
+	}
+	initialAmount := float64(count)*publishAmount + channelClaimAmount + 5 // +5 for fees and such
+
+	log.Printf("Loading wallet with %f initial credits", initialAmount)
+	lbrycrdd, err := lbrycrd.NewWithDefaultURL()
+	if err != nil {
+		return err
+	}
+	lbrycrdd.SimpleSend(address, initialAmount)
+	//lbrycrdd.SendWithSplit(address, initialAmount, 50)
+
+	wait := 15 * time.Second
+	log.Println("Waiting " + wait.String() + " for lbryum to let us know we have the new transaction")
+	time.Sleep(wait)
+
+	log.Println("Waiting for transaction to be confirmed")
+	err = s.waitUntilUTXOsConfirmed()
+	if err != nil {
+		return err
+	}
+
+	err = s.Go()
+	if err != nil {
+		return err
+	}
+
+	// wait for reflection to finish???
+	wait = 15 * time.Second // should bump this up to a few min, but keeping it low for testing
+	log.Println("Waiting " + wait.String() + " to finish reflecting everything")
+	time.Sleep(wait)
+
+	log.Printf("Stopping daemon")
+	err = s.stopDaemonViaSystemd()
+	if err != nil {
+		return err
+	}
+
+	// move wallet
+	if os.Getenv("HOME") == "" {
+		return errors.New("could not move lbryum dir - no $HOME var found")
+	}
+
+	lbryumDir := os.Getenv("HOME") + "/.lbryum"
+	err = os.Rename(lbryumDir, walletDir)
+	if err != nil {
+		return errors.Wrap(err, 0)
+	}
+
+	return nil
+}
+
 func (s *Sync) Go() error {
 	var err error
 
@@ -221,6 +312,8 @@ func (s *Sync) ensureEnoughUTXOs() error {
 			return errors.New("no response")
 		}
 
+		log.Println("balance is " + decimal.Decimal(*balance).String())
+
 		amountPerAddress := decimal.Decimal(*balance).Div(decimal.NewFromFloat(float64(target)))
 		log.Infof("Putting %s credits into each of %d new addresses", amountPerAddress.String(), newAddresses)
 		prefillTx, err := s.daemon.WalletPrefillAddresses(newAddresses, amountPerAddress, true)
@@ -237,7 +330,10 @@ func (s *Sync) ensureEnoughUTXOs() error {
 		time.Sleep(wait)
 
 		log.Println("Creating UTXOs and waiting for them to be confirmed")
-		s.waitUntilUTXOsConfirmed()
+		err = s.waitUntilUTXOsConfirmed()
+		if err != nil {
+			return err
+		}
 	}
 
 	return nil
@@ -253,10 +349,14 @@ func (s *Sync) waitUntilUTXOsConfirmed() error {
 		}
 
 		allConfirmed := true
-		for _, utxo := range *r {
-			if utxo.Height == 0 {
-				allConfirmed = false
-				break
+		if len(*r) < 1 {
+			allConfirmed = false
+		} else {
+			for _, utxo := range *r {
+				if utxo.Height == 0 {
+					allConfirmed = false
+					break
+				}
 			}
 		}
 
@@ -532,3 +632,19 @@ func (s *Sync) publish(v video, conn redis.Conn) error {
 
 	return nil
 }
+
+func (s *Sync) startDaemonViaSystemd() error {
+	err := exec.Command("/usr/bin/sudo", "/bin/systemctl", "start", "lbrynet.service").Run()
+	if err != nil {
+		return errors.New(err)
+	}
+	return nil
+}
+
+func (s *Sync) stopDaemonViaSystemd() error {
+	err := exec.Command("/usr/bin/sudo", "/bin/systemctl", "stop", "lbrynet.service").Run()
+	if err != nil {
+		return errors.New(err)
+	}
+	return nil
+}