#!/usr/bin/env bash
# 生产部署脚本：启动前拉取最新代码 → 构建镜像 → 停止旧容器 → 启动新容器

set -e

IMAGE_NAME="wechat-admin-backend"
CONTAINER_NAME="wechat-admin-backend"
PORT="${PORT:-3000}"
# 数据目录挂载到宿主机，防止容器删除后丢失（SQLite 库 wechat.db 及表数据）
HOST_DATA_DIR="${HOST_DATA_DIR:-$(pwd)/data}"

# 启动前自动获取最新代码（与远端 master 一致，丢弃本地修改）
if git rev-parse --git-dir >/dev/null 2>&1; then
  echo "Fetching and reset to origin/master..."
  git fetch --all && git reset --hard origin/master
else
  echo "Not a git repo, skip git fetch/reset."
fi

echo "Building Docker image: ${IMAGE_NAME}..."
docker build -t "${IMAGE_NAME}" .

echo "Stopping and removing existing container (if any)..."
if [ "$(docker ps -aq -f name=${CONTAINER_NAME})" ]; then
  docker rm -f "${CONTAINER_NAME}" >/dev/null 2>&1 || true
fi

mkdir -p "${HOST_DATA_DIR}"
echo "Data dir (host): ${HOST_DATA_DIR} -> container /app/backend/data"

ENV_FILE=".env"
if [ ! -f "${ENV_FILE}" ]; then
  echo "Env file ${ENV_FILE} not found, copying from .env.example ..."
  cp .env.example "${ENV_FILE}"
fi

echo "Running container ${CONTAINER_NAME} on port ${PORT}..."
docker run -d \
  --name "${CONTAINER_NAME}" \
  --env-file "${ENV_FILE}" \
  -p "${PORT}:3000" \
  -p "8000:8000" \
  -v "${HOST_DATA_DIR}:/app/backend/data" \
  "${IMAGE_NAME}"

echo "Container started. Data persisted on host: ${HOST_DATA_DIR}"
echo "Health check: curl http://localhost:${PORT}/health"