Add update feature to script

DBRepair.sh

@@ -1435,10 +1435,46 @@ DoUpdateTimestamp() {
   TimeStamp="$(date "+%Y-%m-%d_%H.%M.%S")"
 }
 
+# Get latest version from Github
+GetLatestRelease() {
+  response=$(curl -s "https://api.github.com/repos/ChuckPa/PlexDBRepair/tags")
+  if [ $? -eq 0 ]; then
+    LatestVersion=$(echo "$response" | grep -oP '"name":\s*"\K[^"]*' | sed -n '1p')
+  else
+    LatestVersion=$Version
+  fi
+  
+}
+
+# Download and update script
+DownloadAndUpdate() {
+    url="$1"
+    filename="$2"
+
+    # Download the file and check if the download was successful
+    if curl -s "$url" --output "$filename"; then
+        Output "Update downloaded successfully"
+
+        # Check if the file was written to
+        if [ -f "$filename" ]; then
+            Output "Update written successfully"
+        else
+            Output "Error: File not written"
+        fi
+    else
+        Output "Error: Download failed"
+    fi
+}
+
 #############################################################
 #         Main utility begins here                          #
 #############################################################
 
+# Set Script Path
+ScriptPath="$( readlink -f "$0")"
+ScriptName="$(basename "$ScriptPath")"
+ScriptWorkingDirectory="$(dirname "$ScriptPath")"
+
 # Initialize LastName LastTimestamp
 SetLast "" ""
 
@@ -1569,6 +1605,7 @@ do
       echo " 11 - 'status'    - Report status of PMS (run-state and databases)"
       echo " 12 - 'undo'      - Undo last successful command"
       echo ""
+      echo " 88 - 'update'    - Check for script update"
       echo " 99 - 'quit'      - Quit immediately.  Keep all temporary files."
       echo "      'exit'      - Exit with cleanup options."
     fi
@@ -1870,6 +1907,34 @@ do
          DoUndo
          ;;
 
+      88|upda*)
+
+        DoUpdate=0
+        Output "Checking for script update"
+        GetLatestRelease
+        if [ $LatestVersion != $Version ] && ([ $Scripted -eq 1 ] || ConfirmYesNo "Download and update script?"); then
+          DoUpdate=1
+          Output "Version update available"
+        else
+          Output "No update available or user declined update"
+        fi
+        
+        # Check if script path is writable
+        if [ $DoUpdate -eq 1 ]; then
+          if [ -w "$ScriptWorkingDirectory" ]; then
+            Output "Performing update"
+            DownloadAndUpdate "https://raw.githubusercontent.com/ChuckPa/PlexDBRepair/master/DBRepair.sh" "$ScriptWorkingDirectory/$ScriptName"
+            exit 0
+          else
+            Output "Script path is not writable."
+          fi
+        fi
+
+        if [ $Scripted -eq 1 ]; then
+          exit 0
+        fi
+      ;;
+
       # Quit
       99|quit)