#!/usr/bin/env bash
# ============================================================
# hyb-oa - 同机部署服务器初始化脚本（在服务器上执行）
# 适用：官网 hyb-web 已在同机运行，现新增 OA 子域名；默认使用 Caddy 做反向代理
# ============================================================
set -euo pipefail

DEPLOY_USER="${DEPLOY_USER:-deploy}"
REMOTE_DIR="${REMOTE_DIR:-/opt/hyb-oa-trialrun}"
OA_HOST="${OA_HOST:-oa.hyinda.com}"
APP_HOST_PORT="${APP_HOST_PORT:-3000}"
CADDY_CONFIG_PATH="${CADDY_CONFIG_PATH:-/etc/caddy/Caddyfile}"

if [[ ! "$APP_HOST_PORT" =~ ^[0-9]+$ ]] || (( APP_HOST_PORT < 1 || APP_HOST_PORT > 65535 )); then
  echo "[ERROR] APP_HOST_PORT 必须是 1-65535 的端口号" >&2
  exit 1
fi

need_cmd() {
  command -v "$1" >/dev/null 2>&1 || {
    echo "[ERROR] 缺少命令: $1" >&2
    exit 1
  }
}

if [[ "$(id -u)" -ne 0 ]]; then
  echo "[ERROR] 请以 root 执行该脚本" >&2
  exit 1
fi

echo ">>> 1. 安装 Docker / Compose 插件 / rsync / Caddy"
export DEBIAN_FRONTEND=noninteractive
apt-get update -y
apt-get install -y docker.io rsync

if apt-cache show caddy >/dev/null 2>&1; then
  apt-get install -y caddy
else
  echo "[WARN] 未在当前软件源找到 caddy，请后续手工安装。" >&2
fi

if apt-cache show docker-compose-plugin >/dev/null 2>&1; then
  apt-get install -y docker-compose-plugin
elif apt-cache show docker-compose-v2 >/dev/null 2>&1; then
  apt-get install -y docker-compose-v2
elif apt-cache show docker-compose >/dev/null 2>&1; then
  apt-get install -y docker-compose
else
  echo "[WARN] 未在当前软件源找到 Compose 插件/包，请后续手工安装 Docker Compose。" >&2
fi
systemctl enable docker
systemctl start docker
if systemctl list-unit-files caddy.service >/dev/null 2>&1; then
  systemctl enable caddy || true
  systemctl start caddy || true
fi

echo ">>> 2. 让 ${DEPLOY_USER} 可运行 Docker"
id "${DEPLOY_USER}" >/dev/null 2>&1 || {
  echo "[ERROR] 用户 ${DEPLOY_USER} 不存在，请先按官网方式创建 deploy 用户" >&2
  exit 1
}
usermod -aG docker "${DEPLOY_USER}"

echo ">>> 3. 创建 OA 目录"
mkdir -p "${REMOTE_DIR}/deploy/trialrun/data/postgres"
mkdir -p "${REMOTE_DIR}/deploy/trialrun/data/storage"
mkdir -p "${REMOTE_DIR}/deploy/trialrun/data/minio"
chown -R "${DEPLOY_USER}:${DEPLOY_USER}" "${REMOTE_DIR}"

echo ">>> 4. 初始化完成，后续手工操作："
echo "    1) 在 ${CADDY_CONFIG_PATH} 增加站点块：${OA_HOST} { reverse_proxy 127.0.0.1:${APP_HOST_PORT} }"
echo "    2) 执行 systemctl reload caddy"
echo "    3) 在 ${REMOTE_DIR}/deploy/trialrun/.env 写入 OA 环境变量"
echo "    4) 切换到 deploy 用户后，从本地执行 deploy/trialrun/deploy.sh"
echo "    5) 用 curl -I https://${OA_HOST}/ready 或首页访问做最小探活"