map $http_upgrade $connection_upgrade {
    default upgrade;
    '' close;
}

server {
    listen 443 ssl;
    listen [::]:443 ssl;
    server_name etherpad.zinomedia.de;

    ssl_certificate /etc/letsencrypt/live/etherpad.zinomedia.de/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/etherpad.zinomedia.de/privkey.pem;
    include "snippets/ssl-optimizations.conf";

    auth_basic "Protected";
    auth_basic_user_file /usr/share/nginx/html/etherpad.zinomedia.de/.htpasswd;

    # Docker DNS
    resolver 127.0.0.11 valid=30s ipv6=off;

    # 1) Pass-through (original, no /p/ prefix)
    location ~ ^/(locales/|locales\.json|admin/|static/|pluginfw/|javascripts/|socket\.io/|ep/|minified/|api/|ro/|error/|jserror|redirect|favicon\.ico|robots\.txt|indexBootstrap-.*\.js)$ {
        set $upstream "http://etherpad:9001";
        proxy_pass $upstream;
        proxy_buffering off;
        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;
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
    }

    # 2) Strip /p/ prefix from those same paths (INTERNAL rewrite, no 301)
    location ~ ^/p/(locales/|locales\.json|admin/|static/|pluginfw/|javascripts/|socket\.io/|ep/|minified/|api/|ro/|error/|jserror|redirect|favicon\.ico|robots\.txt|indexBootstrap-.*\.js) {
        rewrite ^/p/(.*)$ /$1 last;
    }

    # 3) Root -> Etherpad UI
    location = / {
        set $upstream "http://etherpad:9001";
        proxy_pass $upstream;
        proxy_buffering off;
        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;
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
    }

    # 4) All pad URLs under /p/ — just proxy (NO ^~ so regex above can win)
    location /p/ {
        set $upstream "http://etherpad:9001";
        proxy_pass $upstream;
        proxy_buffering off;
        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;
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
    }

    # 5) Friendly URLs for anything else: /foo -> /p/foo (single 301)
    location / {
        return 301 /p$uri$is_args$args;
    }
}

server {
    listen 80;
    listen [::]:80;
    server_name etherpad.zinomedia.de;
    return 301 https://$host$request_uri;
}