# Korrith frontend — static SPA + same-origin reverse proxies.
# The frontend calls the API and PocketBase on relative paths, so they must
# be reachable on the same origin as the site:
#   /hcgi/api/*      -> Express API
#   /hcgi/platform/* -> PocketBase (API + admin UI)

server {
    listen 80;
    server_name korrith.com;

    root /usr/share/nginx/html;
    index index.html;

    client_max_body_size 20m;

    gzip on;
    gzip_min_length 1024;
    gzip_types text/css application/javascript application/json image/svg+xml font/woff2;

    # Express API
    location /hcgi/api/ {
        proxy_pass http://api:3001/;
        proxy_http_version 1.1;
        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;
    }

    # PocketBase
    location /hcgi/platform/ {
        proxy_pass http://pocketbase:8090/;
        proxy_http_version 1.1;
        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;
        # Server-sent events (realtime subscriptions)
        proxy_buffering off;
        proxy_cache off;
        proxy_read_timeout 3600s;
    }

    # Hashed build assets — safe to cache aggressively
    location /assets/ {
        expires 30d;
        add_header Cache-Control "public, immutable";
        try_files $uri =404;
    }

    # SPA fallback — client-side routing
    location / {
        try_files $uri $uri/ /index.html;
    }
}