#!/usr/bin/env bash
## open_pr Opens PR to Spacemacs repository with built-in updates
##
## Copyright (c) 2014-2021 Sylvain Benner & Contributors
##
## Author: Eugene Yaremenko
## URL: https://github.com/syl20bnr/spacemacs
##
## This file is not part of GNU Emacs.
##
## License: GPLv3

skip_when_non_official_repo

if [ ! -f /tmp/built_in.patch ]; then
    echo "Nothing to update."
    exit 0
fi

echo_headline "Cloning target repository"
target_URL="https://github.com/${prj_owner}/${prj_repo}.git"
git clone "${target_URL}" -b "${CIRCLE_BRANCH}" "/tmp/${PUBLISH}"
if [ $? -ne 0 ]; then
    echo "Failed to clone \"${target_URL}\""
    exit 2
fi

cd "/tmp/${PUBLISH}"

echo_headline "Applying built-in patch"
if [ ! -f /tmp/built_in.patch ]; then
    echo "Built-in files don't need updating. Aborting."
else
    git am < /tmp/built_in.patch
    if [ $? -ne 0 ]; then
        echo "Failed to apply built-in patch."
        exit 2
    fi

fi

echo_headline "Pushing changes to bot repository"
/tmp/hub fork
if [ $? -ne 0 ]; then
    echo "hub fork failed"
    exit 2
fi
fork_url="https://${UPD_BOT_LONIG}:${UPD_BOT_GIT_TK}"
fork_url+="@github.com/${UPD_BOT_LONIG}/${PUBLISH}.git"
git remote set-url "${UPD_BOT_LONIG}" "${fork_url}"
/tmp/hub push -f "${UPD_BOT_LONIG}" "${CIRCLE_BRANCH}" > /dev/null 2>&1
#                                     prevent token leak ^^^^^^^^^^^^^^
if [ $? -ne 0 ]; then
    echo "hub push to \"${BOT_NAME}\" failed"
    exit 2
fi

echo_headline "Opening PR to Spacemacs repo"
echo "[bot] Auto-update" > msg
echo >> msg
echo "Merge with care - I'm just a stupid bot. Beep boop." >> msg
/tmp/hub pull-request -b "${CIRCLE_BRANCH}" -F msg
if [ $? -ne 0 ]; then
    echo "Seems like PR already exists (not a problem)"
fi

echo_headline "Done!"