#!/usr/bin/env bash
set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x

case "$1" in
  git-hook)
    APP=$2

    while read oldrev newrev refname
    do
      # Only run this script for the master branch. You can remove this
      # if block if you wish to run it for others as well.
      if [[ $refname = "refs/heads/master" ]] ; then
        git archive $newrev | dokku receive $APP | sed -u "s/^/"$'\e[1G'"/"
      else
        echo $'\e[1G\e[K'"-----> WARNING: deploy did not complete, you must push to master."
        echo $'\e[1G\e[K'"-----> for example, try 'git push <dokku> ${refname/refs\/heads\/}:master'"
      fi

    done
    ;;

  git-*)
    APP="$(echo $2 | perl -pe 's/(?<!\\)'\''//g' | sed 's/\\'\''/'\''/g')"
    APP_PATH=$DOKKU_ROOT/$APP

    if [[ $1 == "git-receive-pack" && ! -d $APP_PATH ]]; then
        git init --bare $APP_PATH > /dev/null
        PRERECEIVE_HOOK="$APP_PATH/hooks/pre-receive"
        cat > $PRERECEIVE_HOOK <<EOF
#!/usr/bin/env bash
set -e; set -o pipefail;
cat | DOKKU_ROOT="$DOKKU_ROOT" dokku git-hook $APP
EOF
        chmod +x $PRERECEIVE_HOOK
    fi

    args=$@
    git-shell -c "$args"
    ;;

  help)
    cat
    ;;
esac