#!/usr/bin/env bash
# 在部署机上一键安装 Gitea Act Runner（仅需执行一次）
# 用法：
#   export GITEA_URL=https://gitea.yueqing.online
#   export RUNNER_TOKEN=从Gitea复制的注册Token
#   bash scripts/install-act-runner.sh
set -euo pipefail

GITEA_URL="${GITEA_URL:?请设置 GITEA_URL，例如 https://gitea.yueqing.online}"
RUNNER_TOKEN="${RUNNER_TOKEN:?请设置 RUNNER_TOKEN（Gitea → 仓库/站点 Actions → Runners → 创建）}"
RUNNER_NAME="${RUNNER_NAME:-yingqing-ecs}"
LABELS="${LABELS:-yingqing:host}"
INSTALL_DIR="${INSTALL_DIR:-/opt/act_runner}"

mkdir -p "$INSTALL_DIR"
cd "$INSTALL_DIR"

ARCH="$(uname -m)"
case "$ARCH" in
  x86_64|amd64) ARCH=amd64 ;;
  aarch64|arm64) ARCH=arm64 ;;
  *) echo "不支持的架构: $ARCH"; exit 1 ;;
esac

VER="${ACT_RUNNER_VERSION:-0.2.11}"
BIN_URL="https://gitea.com/gitea/act_runner/releases/download/v${VER}/act_runner-${VER}-linux-${ARCH}"

echo "下载 act_runner v${VER} ..."
curl -fL "$BIN_URL" -o act_runner
chmod +x act_runner

if [[ ! -f .runner ]]; then
  echo "注册 Runner ..."
  ./act_runner register --no-interactive \
    --instance "$GITEA_URL" \
    --token "$RUNNER_TOKEN" \
    --name "$RUNNER_NAME" \
    --labels "$LABELS"
fi

cat >/etc/systemd/system/act_runner.service <<UNIT
[Unit]
Description=Gitea Act Runner
After=network.target docker.service
Wants=docker.service

[Service]
Type=simple
WorkingDirectory=${INSTALL_DIR}
ExecStart=${INSTALL_DIR}/act_runner daemon
Restart=always
RestartSec=5

[Install]
WantedBy=multi-user.target
UNIT

systemctl daemon-reload
systemctl enable --now act_runner
systemctl --no-pager --full status act_runner || true
echo
echo "完成。在 Gitea → Actions → Runners 应看到「${RUNNER_NAME}」在线，label: ${LABELS}"
echo "可停掉旧的 webhook（避免重复部署）：systemctl disable --now airshelf-webhook"