From a844a9e94777424e5055ca46cdf6cb4bcf829909 Mon Sep 17 00:00:00 2001
From: erik <erik.seiert@meissa-gmbh.de>
Date: Fri, 2 Dec 2022 09:37:03 +0100
Subject: [PATCH] [Skip-CI] WIP Build only when new data available

---
 .../image/resources/entrypoint.sh             | 34 +++++++++++++++++--
 .../image/resources/functions.sh              | 15 ++++++--
 2 files changed, 45 insertions(+), 4 deletions(-)

diff --git a/infrastructure/c4k-website-build/image/resources/entrypoint.sh b/infrastructure/c4k-website-build/image/resources/entrypoint.sh
index ddb1a37..4a8d3ac 100755
--- a/infrastructure/c4k-website-build/image/resources/entrypoint.sh
+++ b/infrastructure/c4k-website-build/image/resources/entrypoint.sh
@@ -10,8 +10,38 @@ set -eo pipefail
 
 source /usr/local/bin/functions.sh
 
-echo "Downloading website"
-get-and-unzip-website-data
+filename="website.zip"
+hashfilename="hashfile"
+
+# download website data
+# check if hashfile exists
+# if yes
+    # hash the current file
+    # compare current hash to hashfile
+        # same? 
+            # do nothing
+        # not same?
+            # overwrite hashfile with new hash
+            # start the website build
+# if not
+    # hash the current file
+    # write the hashfile
+    # start the build
+
+echo "Downloading website data"
+get-website-data filename
+echo "Check for new content"
+if [[ -f $hashfile ]]
+    then
+    currentHash=$( sha256sum $SOURCEDIR/$filename | cut -d " " -f 1  > ~/$2 ) #ToDo: output of sh256sum without path to file?
+
+    
+    else
+    write-hashfile $filename $hashfilename
+
+fi
+
+
 echo "Executing Custom Scripts, if applicable"
 execute-scripts-when-existing
 echo "Building website"
diff --git a/infrastructure/c4k-website-build/image/resources/functions.sh b/infrastructure/c4k-website-build/image/resources/functions.sh
index 323831a..821a59f 100644
--- a/infrastructure/c4k-website-build/image/resources/functions.sh
+++ b/infrastructure/c4k-website-build/image/resources/functions.sh
@@ -1,8 +1,19 @@
 #!/bin/bash
 
-function get-and-unzip-website-data() {
-    filename="website.zip"
+function get-website-data() {    
     curl -H "Authorization: token $AUTHTOKEN" -o $SOURCEDIR/$filename $GITREPOURL
+}
+
+function write-hashfile() {
+    (cd $SOURCEDIR; sha256sum $1 | cut -d " " -f 1  > ~/$2;)
+}
+
+function compare-website-data() {
+    oldHash="$( cat ~/hashfile )"
+    
+}
+
+function unzip-website-data() {
     unzip $SOURCEDIR/$filename -d $BUILDDIR
 }