server {
    listen 80;
    server_name _;

    # Admin UI
    location /admin/ {
        alias /usr/share/nginx/admin/;
        try_files $uri $uri/ /admin/index.html;
        add_header Cache-Control "no-cache, no-store, must-revalidate";
        add_header Pragma "no-cache";
        add_header Expires "0";
    }

    # Builder UI
    location /builder/ {
        alias /usr/share/nginx/builder/;
        try_files $uri $uri/ /builder/index.html;
    }

    # Chat UI
    location /chat/ {
        alias /usr/share/nginx/chat/;
        try_files $uri $uri/ /chat/index.html;
    }

    # Backend API
    location /admin/api/ {
        proxy_pass http://web:8080;
        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;
    }

    location /builder/api/ {
        proxy_pass http://web:8080;
        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;
    }

    location /chat/api/ {
        proxy_pass http://web:8080;
        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;
    }

    # Static files
    location /doc/ {
        proxy_pass http://web:8080;
    }

    location /schema/ {
        proxy_pass http://web:8080;
    }

    location /static/ {
        proxy_pass http://web:8080;
    }

    # OpenAI 兼容网关
    location /api/v1/ {
        proxy_pass http://web:8080;
        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_buffering off;
        proxy_cache off;
        chunked_transfer_encoding off;
    }

    # OSS files
    location ~ ^/(admin|builder|chat)/oss/ {
        proxy_pass http://web:8080;
    }

    # Default redirect to admin
    location / {
        return 302 /admin/;
    }
}