From 83fa9900f9848660628dee0fba015c8414e26e23 Mon Sep 17 00:00:00 2001
From: Michael Biermann <mbi@deesa.de>
Date: Mon, 2 Sep 2019 17:44:58 +0200
Subject: [PATCH] =?UTF-8?q?self-update=20skript=20hinzugef=C3=BCgt.=20ToDo?=
 =?UTF-8?q?:=20Test,=20ob=20Internet=20verf=C3=BCgbar!?=
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---
 startup.sh | 64 +++++++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 56 insertions(+), 8 deletions(-)

diff --git a/startup.sh b/startup.sh
index 68b530a..e0cd1e8 100755
--- a/startup.sh
+++ b/startup.sh
@@ -1,13 +1,61 @@
 #!/bin/bash -x
 
-# wait for sonic-pi to start
-sleep 90
 
-# set the default audio output to be the headphone jack
-amixer cset numid=3 1
+SCRIPT=$(readlink -f "$0")
+SCRIPTPATH=$(dirname "$SCRIPT")
+SCRIPTNAME="$0"
+ARGS="$@"
+
+UPSTREAM=${1:-'@{u}'}
+LOCAL=$(git rev-parse @)              #Hash of the current local commit (@ is a git shorthand)
+REMOTE=$(git rev-parse "$UPSTREAM")   #Hash of the current upstream commit
+BASE=$(git merge-base @ "$UPSTREAM")  #Hash of the commit at which the current branch and its upstream diverge
+
+
+self_update() {
+    # Wait for Network
+    sleep 10
+
+    cd $SCRIPTPATH
+    git fetch
+
+    if [ $LOCAL = $REMOTE ]; then
+        echo "Repo is Up-to-date"
+
+    elif [ $LOCAL = $BASE ]; then
+        echo "Repo is not Up-to-date. Pulling!"
+        git pull --force
+
+        echo "Executeing the new version..."
+        exec "$SCRIPTNAME" "$@"
+
+        # Now exit this old instance
+        exit 0
+
+    else
+        echo "Diverged"
+    fi
+
+    echo "Already the latest version. Now running the script. "
+
+
+}
+
+main() {
+   # wait for sonic-pi to start
+    sleep 70
+
+    # set the default audio output to be the headphone jack
+    amixer cset numid=3 1
+
+    # set audio volume to full
+    amixer sset PCM 100%
+
+    # play our tune
+    cat /home/pi/world-o-techno/world-o-techno.rb|sonic_pi
+}
+
+self_update
+main
 
-# set audio volume to full
-amixer sset PCM 100%
 
-# play our tune
-cat /home/pi/world-o-techno/world-o-techno.rb|sonic_pi