#!/bin/bash
# SPDX-License-Identifier: MIT

set -ex

: ${FORGEJO_RUNNER_CONFIG:=$(pwd)/runner-config.yaml}

function dependencies() {
    if ! which curl daemon > /dev/null ; then
	apt-get install -y -qq curl daemon
    fi
}

function download() {
    local runner_repository="$1"
    local version="$2"

    if ! which forgejo-runner > /dev/null; then
	curl -L --fail -sS $runner_repository/releases/download/$version/forgejo-runner-amd64 > /bin/forgejo-runner
	chmod 755 /bin/forgejo-runner
    fi
}

function register() {
    local forgejo="$1"
    docker exec --user 1000 forgejo forgejo actions generate-runner-token > forgejo-runner-token
    timeout --signal=KILL 30 forgejo-runner register --no-interactive --instance "$forgejo" --name runner --token $(cat forgejo-runner-token) --labels docker:docker://node:16-bullseye,ubuntu-latest:docker://node:16-buster,self-hosted
}

function run() {
    rm -f forgejo-runner.log
    daemon --chdir=$(pwd) --unsafe --env="TERM=$TERM" --env="HOME=$HOME" --env="PATH=$PATH" --env="USER=$USER" --env="TERM=dumb" --env="USERNAME=$USERNAME" --env="LANG=$LANG" --pidfile=$(pwd)/forgejo-runner-pid --errlog=$(pwd)/forgejo-runner.log --output=$(pwd)/forgejo-runner.log -- forgejo-runner --config $FORGEJO_RUNNER_CONFIG daemon
    sleep 1
    cat forgejo-runner.log
}    

function reload() {
    teardown
    run
}

function setup() {
    local runner_repository="${1:-https://code.forgejo.org/forgejo/runner}"
    local version="${2:-v2.3.0}"
    local forgejo="${3:-http://$(cat forgejo-ip):3000/}"

    dependencies
    download $runner_repository $version
    register $forgejo
    run
}

function teardown() {
    if test -f forgejo-runner-pid ; then
	kill -TERM $(cat forgejo-runner-pid)
	rm -f forgejo-runner-pid
    fi
}

"$@"