#!/usr/bin/env bash
# 低内存首次部署：串行 build 1 次，web/worker 共用镜像
# 用法：bash deploy/install-bt-host-mysql-lowmem.sh

set -euo pipefail

ROOT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
COMPOSE_FILE="${ROOT_DIR}/deploy/docker-compose.bt-host-mysql.yml"
ENV_FILE="${ROOT_DIR}/.env"

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'

log() { echo -e "${GREEN}[deploy-lowmem]${NC} $*"; }
warn() { echo -e "${YELLOW}[deploy-lowmem]${NC} $*"; }
err() { echo -e "${RED}[deploy-lowmem]${NC} $*" >&2; }

if [[ ! -f "$ENV_FILE" ]]; then
  err "缺少 .env，请先 cp deploy/.env.bt-host-mysql.example .env 并填写"
  exit 1
fi

if command -v free >/dev/null 2>&1; then
  total_kb="$(free -k | awk '/^Mem:/{print $2}')"
  avail_kb="$(free -k | awk '/^Mem:/{print $7}')"
  log "内存：总计约 $((total_kb / 1024))MB，可用约 $((avail_kb / 1024))MB"
  if [[ -n "${avail_kb:-}" && "$avail_kb" -lt 1500000 ]]; then
    warn "可用内存偏低。建议先停查价等其它 Docker 项目，或加 2G Swap 后再部署。"
  fi
fi

mkdir -p "${ROOT_DIR}/data"
cd "$ROOT_DIR"
compose=(docker compose --env-file "$ENV_FILE" -f "$COMPOSE_FILE")

export DOCKER_BUILDKIT=1
export BUILDKIT_MAX_PARALLELISM=1

log "停止可能半成品的容器…"
"${compose[@]}" down --remove-orphans 2>/dev/null || true

log "串行构建镜像（仅 1 次，web/worker 共用 yubao-app:latest）…"
warn "Next.js 编译峰值约 2~4GB，期间 CPU/内存会飙高，服务器变慢属正常"
"${compose[@]}" build web

log "启动 web + worker…"
"${compose[@]}" up -d

log "同步数据库结构…"
"${compose[@]}" run --rm --no-deps web pnpm exec prisma db push --skip-generate

log "同步默认账号…"
"${compose[@]}" run --rm --no-deps web pnpm db:seed || true

"${compose[@]}" ps

APP_PORT="$(grep -E '^APP_PORT=' "$ENV_FILE" | tail -1 | cut -d= -f2- | tr -d '\r' || echo 30327)"
PUBLIC_HOST="$(grep -E '^PUBLIC_HOST=' "$ENV_FILE" | tail -1 | cut -d= -f2- | tr -d '\r' || echo 127.0.0.1)"
log "完成 → http://${PUBLIC_HOST}:${APP_PORT}/login"