# 静态资源缓存配置
location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
    expires 1y;
    add_header Cache-Control "public, immutable";
    access_log off;
}

# API请求代理到后端Node.js服务
location /api/ {
    proxy_pass http://127.0.0.1:4001;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_connect_timeout 30s;
    proxy_read_timeout 60s;
    proxy_send_timeout 30s;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
}

# uploads目录代理到后端
location /uploads/ {
    proxy_pass http://127.0.0.1:4001;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
}

# 前端路由处理 - 所有其他请求返回index.html
location / {
    try_files $uri $uri/ /index.html;
}