#2552 adding electrum sync progress to infoscreen (#4603)

* #2552 getting the synced blockheight with nc
* feat: Add blockheight information to electrs status command
* add info in CHANGES

CHANGES.md

@@ -5,6 +5,7 @@
 - Update: Specter Desktop 2.0.4 with reactivated UPDATE option [details](https://github.com/cryptoadvance/specter-desktop/releases/tag/v2.0.4)
 - Update: BTCPayServer 1.13.0 [details](https://github.com/btcpayserver/btcpayserver/releases/tag/v1.13.0)
 - Update: acme.sh 3.0.7 (repair duckdns.org dyndns)
+- Update: show progress of electrs building index on LCD
 - Update: lndmanage 0.16.0 [details](https://github.com/bitromortac/lndmanage)
 - Experimental: charge-lnd install script [details](https://github.com/raspiblitz/raspiblitz/discussions/3955)
 - Experimental: config.scripts/lnd.signaddress.sh to easy sign messages on addresses on LND [details](https://github.com/raspiblitz/raspiblitz/issues/4540)

home.admin/00infoBlitz.sh

@@ -355,7 +355,8 @@ else
   appInfoLine=""
 
   # Electrum Server - electrs
-  if [ "${ElectRS}" == "on" ]; then
+  fileFlagExists=$(sudo ls /mnt/hdd/app-storage/electrs/initial-sync.done 2>/dev/null | grep -c 'initial-sync.done')
+  if [ "${ElectRS}" == "on" ] && [ $fileFlagExists -eq 0 ]; then
     error=""
     source <(sudo /home/admin/config.scripts/bonus.electrs.sh status-sync 2>/dev/null)
     if [ ${#infoSync} -gt 0 ]; then
@@ -364,7 +365,8 @@ else
   fi
 
   # Electrum Server - fulcrum
-  if [ "${fulcrum}" == "on" ]; then
+  fileFlagExists=$(sudo ls /mnt/hdd/app-storage/fulcrum/initial-sync.done 2>/dev/null | grep -c 'initial-sync.done')
+  if [ "${fulcrum}" == "on" ] && [ $fileFlagExists -eq 0 ]; then
     error=""
     source <(sudo /home/admin/config.scripts/bonus.fulcrum.sh status-sync 2>/dev/null)
     if [ ${#infoSync} -gt 0 ]; then

home.admin/config.scripts/bonus.electrs.sh

@@ -105,22 +105,6 @@ if [ "$1" = "status-sync" ]; then
   echo "serviceRunning=${serviceRunning}"
   if [ ${serviceRunning} -eq 1 ]; then
 
-    # Experimental try to get sync Info (electrs debug info would need more details)
-    #source <(/home/admin/_cache.sh get btc_mainnet_blocks_headers)
-    #blockchainHeight="${btc_mainnet_blocks_headers}"
-    #lastBlockchainHeight=$(($blockchainHeight -1))
-    #syncedToBlock=$(sudo journalctl -u electrs --no-pager -n2000 | grep "height=" | tail -n1| cut -d= -f3)
-    #syncProgress=0
-    #if [ "${syncedToBlock}" != "" ] && [ "${blockchainHeight}" != "" ] && [ "${blockchainHeight}" != "0" ]; then
-    #  syncProgress="$(echo "$syncedToBlock" "$blockchainHeight" | awk '{printf "%.2f", $1 / $2 * 100}')"
-    #fi
-    #echo "syncProgress=${syncProgress}%"
-    #if [ "${syncedToBlock}" = "${blockchainHeight}" ] || [ "${syncedToBlock}" = "${lastBlockchainHeight}" ]; then
-    #  echo "tipSynced=1"
-    #else
-    #  echo "tipSynced=0"
-    #fi
-
     # check if initial sync was done, by setting a file as once electrs is the first time responding on port 50001
     electrumResponding=$(echo '{"jsonrpc":"2.0","method":"server.ping","params":[],"id":"electrs-check"}' | netcat -w 2 127.0.0.1 50001 | grep -c "result")
     if [ ${electrumResponding} -gt 1 ]; then
@@ -128,6 +112,27 @@ if [ "$1" = "status-sync" ]; then
     fi
     echo "electrumResponding=${electrumResponding}"
 
+    blockheight=0
+    blockheightPercent=0
+    if [ ${electrumResponding} -eq 0 ]; then
+
+      # get the synced blockheight
+      syncedBlock=$(echo '{"id": 1, "method": "blockchain.headers.subscribe", "params": []}' | nc -w 20 -q 1 localhost 50001 | jq '.result.height')
+      if [ "$syncedBlock" -eq "$syncedBlock" ] 2>/dev/null; then
+        blockheight=${syncedBlock}
+
+        # calculate the progress
+        source <(/home/admin/_cache.sh get btc_mainnet_blocks_verified)
+        if [ "$btc_mainnet_blocks_verified" -eq "$btc_mainnet_blocks_verified" ] 2>/dev/null; then
+          blockheightPercent=$(echo "scale=2; $syncedBlock / $btc_mainnet_blocks_verified * 100" | bc)
+          blockheightPercent=$(printf "%.0f\n" $blockheightPercent)
+        fi
+
+      fi
+    fi
+    echo "blockheight='${blockheight}'"
+    echo "blockheightPercent='${blockheightPercent}'"
+
     fileFlagExists=$(sudo ls /mnt/hdd/app-storage/electrs/initial-sync.done 2>/dev/null | grep -c 'initial-sync.done')
     if [ ${fileFlagExists} -eq 0 ] && [ ${electrumResponding} -gt 0 ]; then
       # set file flag for the future
@@ -137,7 +142,11 @@ if [ "$1" = "status-sync" ]; then
     fi
     if [ ${fileFlagExists} -eq 0 ]; then
       echo "initialSynced=0"
-      echo "infoSync='Building Index (please wait)'"
+      if [ "${blockheightPercent}" != "0" ]; then
+        echo "infoSync='Building Index ${blockheightPercent}% (please wait)'"
+      else
+        echo "infoSync='Building Index (please wait)'"
+      fi
     else
       echo "initialSynced=1"
     fi