#!/usr/bin/env bash
# 生产部署脚本（Issue #90）：拉取镜像 -> 滚动更新 -> 健康检查 -> 失败回滚
set -euo pipefail

COMMIT_SHA="${1:-latest}"
REGISTRY="${REGISTRY:-registry.xayunmei.local}"
IMAGE="water-management-system"
APP_DIR="/opt/wms"
HEALTH_URL="http://127.0.0.1:8000/health"

log() { echo "[deploy $(date '+%F %T')] $*"; }

cd "$APP_DIR"

log "拉取镜像 $REGISTRY/$IMAGE:$COMMIT_SHA"
docker pull "$REGISTRY/$IMAGE:$COMMIT_SHA"

# 记录上一版本用于回滚
PREV_IMAGE=$(docker inspect --format='{{.Config.Image}}' wms-app 2>/dev/null || echo "")
echo "$PREV_IMAGE" > .prev_image

log "滚动更新容器"
export IMAGE_TAG="$COMMIT_SHA"
docker compose -f docker-compose.yml -f deploy/production/docker-compose.override.yml up -d --no-deps app

log "健康检查（最多 60s）"
ok=0
for i in $(seq 1 12); do
  if curl -fsS "$HEALTH_URL" >/dev/null 2>&1; then ok=1; break; fi
  sleep 5
done

if [ "$ok" != "1" ]; then
  log "健康检查失败，回滚到 $PREV_IMAGE"
  export IMAGE_TAG="${PREV_IMAGE##*:}"
  docker compose -f docker-compose.yml -f deploy/production/docker-compose.override.yml up -d --no-deps app
  exit 1
fi

log "部署成功：$COMMIT_SHA"
docker image prune -f >/dev/null 2>&1 || true