#!/bin/bash

# Copyright (c) 2010-2024, Lawrence Livermore National Security, LLC. Produced
# at the Lawrence Livermore National Laboratory. All Rights reserved. See files
# LICENSE and NOTICE for details. LLNL-CODE-806117.
#
# This file is part of the MFEM library. For more information and source code
# availability visit https://mfem.org.
#
# MFEM is free software; you can redistribute it and/or modify it under the
# terms of the BSD-3 license. We welcome feedback and contributions, see file
# CONTRIBUTING.md for details.

# Try to push to the remote 5 times. If the push fails, and the local and remote
# have diverged, then pull from the remote to merge changes, and try pushing
# again. If some other failure happens
for i in {1..5}; do
   git push origin master && exit 0
   # Wait for 20 seconds in case someone else is pushing to the remote
   # concurrently
   sleep 20
   # Fetch any updates from the remote
   git remote update
   # Get the latest commit on the local branch
   LOCAL=$(git rev-parse @)
   # Get the latest commit on the remote
   REMOTE=$(git rev-parse @{u})
   # Get the common ancestor
   BASE=$(git merge-base @ @{u})
   # Have the local and remote diverged?
   if [[ $LOCAL != $REMOTE && $LOCAL != $BASE && $REMOTE != $BASE ]]; then
      git pull
      if [[ $? == 0 ]]; then
         continue
      else
         exit 1 # Something else went wrong trying to pull
      fi
   fi
done

exit 1 # Did not succeed in 5 attempts