#!/usr/bin/env bash
# push → Gitea Webhook → 本脚本：仅部署 dev 到本机 Docker Compose
set -euo pipefail

APP_DIR="${APP_DIR:-/opt/AirShelf}"
BRANCH="${BRANCH:-dev}"
COMPOSE_FILE="${COMPOSE_FILE:-docker-compose.yml}"
ENV_FILE="${ENV_FILE:-core/backend/.env}"
LOG_DIR="${LOG_DIR:-/var/log/airshelf}"
LOCK_FILE="${LOCK_FILE:-/tmp/airshelf-deploy-dev.lock}"

mkdir -p "$LOG_DIR"
LOG_FILE="${LOG_DIR}/deploy-dev.log"

exec 9>"$LOCK_FILE"
if ! flock -n 9; then
  echo "$(date '+%F %T') another deploy is running, skip" | tee -a "$LOG_FILE"
  exit 0
fi

{
  echo "======== $(date '+%F %T') deploy start ========"
  cd "$APP_DIR"

  if [[ ! -d .git ]]; then
    echo "ERROR: $APP_DIR is not a git repo. Clone from your Gitea first."
    exit 1
  fi

  # .env 在仓库里被跟踪，pull 会覆盖服务器上的生产配置；先备份再还原
  ENV_BACKUP=""
  if [[ -f "$ENV_FILE" ]]; then
    ENV_BACKUP="$(mktemp)"
    cp -a "$ENV_FILE" "$ENV_BACKUP"
    echo "backed up $ENV_FILE"
  fi

  git fetch --prune origin
  git checkout "$BRANCH"
  git reset --hard "origin/$BRANCH"

  if [[ -n "$ENV_BACKUP" ]]; then
    cp -a "$ENV_BACKUP" "$ENV_FILE"
    rm -f "$ENV_BACKUP"
    echo "restored $ENV_FILE"
  fi

  docker compose -f "$COMPOSE_FILE" up -d --build

  echo "======== $(date '+%F %T') deploy ok ========"
} >>"$LOG_FILE" 2>&1