# OpenDance Studio Web 服务端 —— 生产镜像
#
# 构建上下文为 web-server/（与 contracts/database.md、deploy/docker-compose.yml 一致）。
# 镜像内**不包含 MySQL**：数据库为外部现有实例，通过环境变量注入连接信息。

# ---------- 构建阶段 ----------
FROM node:22-alpine AS builder

WORKDIR /app

# 先装依赖，最大化利用层缓存
COPY package.json package-lock.json ./
RUN npm ci --no-audit --no-fund

# 编译 TypeScript
COPY tsconfig.json tsconfig.build.json nest-cli.json ./
COPY src ./src
RUN npm run build

# 仅保留运行时依赖
RUN npm prune --omit=dev

# ---------- 运行阶段 ----------
FROM node:22-alpine AS runtime

WORKDIR /app

ENV NODE_ENV=production \
    PORT=3000 \
    STORAGE_DIR=/data/storage

# 迁移需要编译后的 data-source.js + typeorm CLI（均为运行时依赖）
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/dist ./dist
COPY --from=builder /app/package.json ./package.json
COPY scripts ./scripts
COPY .env.example ./.env.example

# 非 root 运行；上传目录为卷挂载点
RUN mkdir -p /data/storage && chown -R node:node /data /app
USER node

VOLUME ["/data/storage"]

EXPOSE 3000

HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
  CMD node -e "fetch('http://127.0.0.1:'+(process.env.PORT||3000)+'/health').then(r=>process.exit(r.ok?0:1)).catch(()=>process.exit(1))"

CMD ["node", "dist/main.js"]