# 多阶段构建 - 构建阶段
FROM node:20-alpine AS builder

# 接受构建参数
ARG BUILD_MODE=production

WORKDIR /app

# 复制包管理文件
COPY package.json pnpm-lock.yaml ./

# 安装 pnpm 和依赖
RUN npm install -g pnpm && pnpm install

# 复制源代码
COPY . .

# 根据构建模式复制对应的环境文件
RUN if [ "$BUILD_MODE" = "flask" ]; then \
        cp .env.flask .env; \
    else \
        cp .env.production .env; \
    fi

# 根据构建模式执行对应的构建命令
RUN if [ "$BUILD_MODE" = "flask" ]; then \
        pnpm build:flask; \
    else \
        pnpm build; \
    fi

# 生产阶段 - nginx
FROM nginx:alpine AS production

# 接受端口参数，默认为5173
ARG PORT=5173

# 复制自定义 nginx 配置
RUN cat > /etc/nginx/conf.d/default.conf << EOF
server {
    listen ${PORT};
    server_name localhost;
    root /usr/share/nginx/html;
    index index.html;

    # 处理 SPA 路由
    location / {
        try_files \$uri \$uri/ /index.html;
    }

    # 静态资源缓存
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }

    # 安全头
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;

    # Gzip 压缩
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_types text/plain text/css text/xml text/javascript application/javascript application/xml+rss application/json;
}
EOF

# 从构建阶段复制构建产物
COPY --from=builder /app/dist /usr/share/nginx/html

# 暴露端口（使用构建时指定的端口）
EXPOSE ${PORT}

# 启动 nginx
CMD ["nginx", "-g", "daemon off;"]