#!/bin/sh

set -eu

fetch () {
  git clean -fdx
  git fetch
  # reset to updated upstream branch, but only if we're tracking a branch
  branch=$(git rev-parse --abbrev-ref --symbolic-full-name @{u} 2>/dev/null || echo head)
  git reset --hard "$branch"
}

cd $HOME/buywith/
fetch
git submodule update --force --init

# Generate current version under 'work in progress' (wip) folder
mkdir -p $HOME/buywith.taler.net.wip/
cp -r web/* $HOME/buywith.taler.net.wip/
chmod -R g+rx $HOME/buywith.taler.net.wip/

# delete ancient version (if any)
rm -fr $HOME/buywith.taler.net.old/

# Finally, do two fast renames to make the current version active
mv $HOME/buywith.taler.net/ $HOME/buywith.taler.net.old/
mv $HOME/buywith.taler.net.wip/ $HOME/buywith.taler.net/