#!/usr/bin/env bash
#
# SPDX-FileCopyrightText: © Vegard IT GmbH (https://vegardit.com)
# SPDX-FileContributor: Sebastian Thomschke
# SPDX-License-Identifier: Apache-2.0
# SPDX-ArtifactOfProjectHomePage: https://github.com/vegardit/docker-gitea-act-runner
#

source /opt/bash-init.sh

#################################################
# print header
#################################################
cat <<'EOF'
   _____ _ _                            _     _____
  / ____(_) |                 /\       | |   |  __ \
 | |  __ _| |_ ___  __ _     /  \   ___| |_  | |__) |   _ _ __  _ __   ___ _ __
 | | |_ | | __/ _ \/ _` |   / /\ \ / __| __| |  _  / | | | '_ \| '_ \ / _ \ '__|
 | |__| | | ||  __/ (_| |  / ____ \ (__| |_  | | \ \ |_| | | | | | | |  __/ |
  \_____|_|\__\___|\__,_| /_/    \_\___|\__| |_|  \_\__,_|_| |_|_| |_|\___|_|
EOF

cat /opt/build_info
echo

log INFO "Timezone is $(date +"%Z %z")"
log INFO "Hostname: $(hostname -f)"
log INFO "IP Addresses: "
awk '/32 host/ { if(uniq[ip]++ && ip != "127.0.0.1") print " - " ip } {ip=$2}' /proc/net/fib_trie


#################################################################
# Adjust UID/GID and file permissions based on env var config
#################################################################
if [ -n "${GITEA_RUNNER_UID:-}" ]; then
  effective_uid=$(id -u act)
  if [ "$GITEA_RUNNER_UID" != "$effective_uid" ]; then
    log INFO "Changing UID of user [act] from $effective_uid to $GITEA_RUNNER_UID..."
    sudo usermod -o -u "$GITEA_RUNNER_UID" act
  fi
fi
if [ -n "${GITEA_RUNNER_GID:-}" ]; then
  effective_gid=$(id -g act)
  if [ "$GITEA_RUNNER_GID" != "$effective_gid" ]; then
    log INFO "Changing GID of user [act] from $effective_gid to $GITEA_RUNNER_GID..."
    sudo usermod -o -u "$GITEA_RUNNER_GID" act
  fi
fi
sudo chown -R act:act /data

if [[ -f /usr/bin/dockerd ]]; then
  log INFO "Starting docker engine..."
  sudo service docker start
  while [[ ! -e /var/run/docker.sock ]]; do sleep 2; done
fi

docker_group=$(stat -c '%G' /var/run/docker.sock)
if [[ $docker_group == "UNKNOWN" ]]; then
  docker_gid=$(stat -c '%g' /var/run/docker.sock)
  docker_group="docker$docker_gid"
  log INFO "Creating group [$docker_group]..."
  sudo addgroup --gid $docker_gid $docker_group
fi

if ! id -nG act | grep -qw "$docker_group"; then
  log INFO "Adding user [act] to group [$docker_group]..."
  sudo usermod -aG $docker_group act
fi


#################################################################
# Launch the runner with adjusted UID/GID
#################################################################
exec sudo -u act -g act -E bash /opt/run_runner.sh