server {
    listen 80;
    server_name _;

    # Increase max body size for file uploads
    client_max_body_size 100M;

    # Serve static files from the web frontend
    location / {
        root /ragflow/web/dist;
        try_files $uri $uri/ /index.html;
        index index.html;
    }

    # Proxy API requests to Flask backend
    location /v1/ {
        proxy_pass http://127.0.0.1:9380;
        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_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_read_timeout 300s;
        proxy_connect_timeout 75s;
    }

    # Proxy admin API requests to admin Flask backend
    location /v1/admin/ {
        proxy_pass http://127.0.0.1:9381;
        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_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_read_timeout 300s;
        proxy_connect_timeout 75s;
    }

    # Additional API endpoints
    location ~ ^/(api|auth|files)/ {
        proxy_pass http://127.0.0.1:9380;
        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_http_version 1.1;
        proxy_read_timeout 300s;
        proxy_connect_timeout 75s;
    }

    # Static assets with caching
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
        root /ragflow/web/dist;
        expires 1y;
        add_header Cache-Control "public, immutable";
    }

    # Health check endpoint
    location /health {
        access_log off;
        return 200 "healthy\n";
        add_header Content-Type text/plain;
    }
}