implement update system, cleaned output text

setupFiles/install.sh

@@ -1,6 +1,9 @@
 #! /bin/bash
 # Adapted from github.com/gkilleen33/overleaf-offline under the MIT license
 
+# .autoltx file contents as per line numbers:
+# 1. build date in epoch, for checking for updates.
+
 # CD into the main directory
 cd /app/project || exit 2
 
@@ -8,29 +11,47 @@ if test -d "pdf/"; then
     rm -r pdf/
 fi
 
-# Update old installation
-if test -f ".autoltxXenon"; then # Intentional wrong file name checking, to ensure the files are updated everytime the container starts. To implement version checking in later version.
-  echo AutoLTX already installed, skipping steup
-else
-  if test -f ".gitignore"; then
-    # Adding build files to .gitignore
-    grep -qxF 'pdf/' .gitignore || echo 'pdf/' >> .gitignore
-    grep -qxF 'latexmkrc' .gitignore || echo 'latexmkrc' >> .gitignore
-    grep -qxF 'compile.sh' .gitignore || echo 'compile.sh' >> .gitignore
-    grep -qxF '.autoltx' .gitignore || echo '.autoltx' >> .gitignore
-    grep -qxF 'output.pdf' .gitignore || echo 'output.pdf' >> .gitignore
-    touch .autoltx
-    echo Configuring AutoLTX for this project
+requiresUpdate=0
+settingsExists=0
+
+# Check for updates
+if test -f "/app/project/.autoltx"; then
+  buildDate=`cat /app/setupFiles/buildDate`
+  installedVersion=`sed -n "1p" /app/project/.autoltx`
+  settingsExists=1
+  if [[ installedVersion -eq buildDate ]]; then
+      requiresUpdate=0
+      echo AutoLTX already installed, skipping steup...
   else
-    # Creating .gitignore file
-    printf 'pdf/\nlatexmkrc\ncompile.sh\n.autoltx\noutput.pdf\n' >> .gitignore
-    touch .autoltx
+      requiresUpdate=1
+      echo Found old AutoLTX files, updating...
   fi
-
-  # Add latexmk rc file to build files
-  cp /app/setupFiles/latexmkrc /app/project/
-
-  # Add compile script to build files
-  cp /app/setupFiles/compile.sh /app/project
-  chmod +x compile.sh
+else
+    echo "1" > /app/project/.autoltx
+    requiresUpdate=1
+    echo AutoLTX not installed, configuring...
+fi
+
+# Update files if necessary
+if [[ requiresUpdate -eq 1 ]]; then
+    # Add latexmk rc file to build files
+    cp /app/setupFiles/latexmkrc /app/project/
+    # Add compile script to build files
+    cp /app/setupFiles/compile.sh /app/project/
+
+    chmod +x compile.sh
+
+    if test -f "/app/project/.gitignore"; then
+        # Adding build files to .gitignore
+        grep -qxF 'pdf/' .gitignore || echo 'pdf/' >> .gitignore
+        grep -qxF 'latexmkrc' .gitignore || echo 'latexmkrc' >> .gitignore
+        grep -qxF 'compile.sh' .gitignore || echo 'compile.sh' >> .gitignore
+        grep -qxF '.autoltx' .gitignore || echo '.autoltx' >> .gitignore
+        grep -qxF 'output.pdf' .gitignore || echo 'output.pdf' >> .gitignore
+    else
+        # Creates .gitignore file
+        echo Configuring .gitignore for this project
+        printf 'pdf/\nlatexmkrc\ncompile.sh\n.autoltx\noutput.pdf\n' >> /app/project/.gitignore
+    fi
+    sed -i "1s/.*/$buildDate/" /app/project/.autoltx
 fi