error_log /var/log/nginx/error.log info;

resolver 127.0.0.11 valid=30s;
resolver_timeout 5s;

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




# ------------------------------------------------------------
# Default HTTP -> HTTPS redirect
# ------------------------------------------------------------
server {
    listen 80 default_server;
    server_name _;

    location /.well-known/acme-challenge/ {
        root /var/www/certbot;
    }

    location / {
        return 301 https://$host$request_uri;
    }
}

# ------------------------------------------------------------
# #***# DEFAULT 443 SERVER (NEU)
# Verhindert, dass der erste 443-vHost andere Subdomains "abfängt"
# ------------------------------------------------------------
server {
    listen 443 ssl http2 default_server;
    server_name _;

    ssl_certificate /etc/letsencrypt/live/server.schooltech.ch/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/server.schooltech.ch/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers on;

    # Einfach Verbindung schließen für unbekannte Hosts
    return 444;
}

# ------------------------------------------------------------
# UI (portal) - nur für server.schooltech.ch
# ------------------------------------------------------------
server {
    listen 443 ssl http2;
    server_name server.schooltech.ch;

    ssl_certificate /etc/letsencrypt/live/server.schooltech.ch/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/server.schooltech.ch/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers on;


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

    location / {
        try_files $uri $uri/ /index.html;
    }

    # API forwarding to auth (wie vorher) - nur für server.schooltech.ch
    location /api/ {
        proxy_pass http://appServer_Auth:3000/api/;
        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_request_buffering off;
    }

    # ------------------------------------------------------------
    # Internal auth endpoint for auth_request (used by other server blocks)
    # Einheitlicher nginxauth-Block: Host + URI an Auth-Service
    # ------------------------------------------------------------
    location = /nginxauth {
        internal;
        proxy_pass http://appServer_Auth:3000/internal/auth;   #***# AUTH: proxy_pass (wichtig)
        proxy_set_header Cookie $http_cookie;                 #***# AUTH: Cookie weitergeben

        #***# AUTH HEADER ERWEITERUNG
        proxy_set_header X-Original-URI $request_uri;
        proxy_set_header X-Original-Host $host;
        proxy_set_header X-Forwarded-Host $host;
    }

    # Security
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;

    # SSL
    tcp_nopush on;
    tcp_nodelay on;
}

# ------------------------------------------------------------
# abc.server.schooltech.ch - Controller on ThinkCentre
# ------------------------------------------------------------
server {
    listen 443 ssl http2;
    server_name abc.server.schooltech.ch;

    ssl_certificate /etc/letsencrypt/live/server.schooltech.ch/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/server.schooltech.ch/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers on;

    set $serverBackendControl "appRobot_Control:10010";
    set $auth_backend "appServer_Auth:3000";


    location @fallback {
        default_type text/html;
        return 200 '
        <html>
            <head>
                <title>Dienst offline</title>
            </head>
            <body style="font-family:sans-serif;text-align:center;padding-top:10%">
                <h1>Ein Dienst ist momentan nicht erreichbar</h1>
                <p>Bitte Seite neu laden - Verbindung wird automatisch erneut versucht.</p>
            </body>
        </html>';
    }

    # ---- Static assets: keine Auth, damit Browser die .js/.css korrekt erhält ----
    location ~* \.(?:js|css|png|jpg|jpeg|gif|ico|svg|webp)$ {
        proxy_pass https://$serverBackendControl;
        proxy_set_header Host thinkcentre.local;
        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 https;
        # kein proxy_set_header Connection / Upgrade hier
    }

    # ---- WebSocket-Endpoint (falls z.B. /echo) - auth prüfen ----
    location /echo {
        auth_request /nginxauth;
        proxy_pass https://$serverBackendControl/echo;

        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;

        proxy_ssl_server_name on;
        proxy_ssl_name thinkcentre.local;
        proxy_ssl_verify off;

        proxy_set_header Host thinkcentre.local;
        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 https;
    }

    # ---- Hauptanwendung (HTML, API-Aufrufe) - auth prüfen ----
    location / {
        auth_request /nginxauth;

        proxy_pass https://$serverBackendControl/;

        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;

        proxy_ssl_server_name on;
        proxy_ssl_name thinkcentre.local;
        proxy_ssl_verify off;

        proxy_set_header Host thinkcentre.local;
        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 https;
        proxy_set_header Origin $http_origin;

        proxy_hide_header X-Frame-Options;
        add_header X-Frame-Options "ALLOWALL" always;

        proxy_hide_header Content-Security-Policy;
        add_header Content-Security-Policy "frame-ancestors https://server.schooltech.ch" always;
    }

    # /nginxauth (lokal für diesen vhost, aber internal request wird an auth-service weitergeleitet)
    location = /nginxauth {
        internal;
        proxy_pass http://$auth_backend/internal/auth;   #***# AUTH
        proxy_set_header Cookie $http_cookie;                 #***# AUTH

        #***# AUTH HEADER ERWEITERUNG
        proxy_set_header X-Original-URI $request_uri;
        proxy_set_header X-Original-Host $host;
        proxy_set_header X-Forwarded-Host $host;
    }

    proxy_intercept_errors on;
    error_page 502 503 504 = @fallback;
}

# ------------------------------------------------------------
# simulation3a29.server.schooltech.ch
# ------------------------------------------------------------
server {
    listen 443 ssl http2;
    server_name simulation3a29.server.schooltech.ch;

    ssl_certificate /etc/letsencrypt/live/server.schooltech.ch/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/server.schooltech.ch/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers on;

    set $serverBackendSimulation "appRobot_Simulation:1003";
    set $auth_backend "appServer_Auth:3000";

    location @fallback {
        default_type text/html;
        return 200 '
        <html>
            <head>
                <title>Dienst (Simulation) offline</title>
            </head>
            <body style="font-family:sans-serif;text-align:center;padding-top:10%">
                <h1>Ein Dienst ist momentan nicht erreichbar</h1>
                <p>Bitte Seite neu laden - Verbindung wird automatisch erneut versucht.</p>
            </body>
        </html>';
    }

    # ---- Static assets: keine Auth ----
    location ~* \.(?:js|css|png|jpg|jpeg|gif|ico|svg|webp|stl)$ {
        proxy_pass https://$serverBackendSimulation;

        proxy_ssl_server_name on;
        proxy_ssl_name thinkcentre.local;
        proxy_ssl_verify off;   
        
        proxy_set_header Host thinkcentre.local;
        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 https;
        # kein proxy_set_header Connection / Upgrade hier
        proxy_intercept_errors on;
        error_page 502 503 504 = @fallback;
    }

    # ---- WebSocket-Endpoint ----
    location /echo {
        auth_request /nginxauth;
        proxy_pass https://$serverBackendSimulation/echo;
        
        proxy_ssl_server_name on;
        proxy_ssl_name thinkcentre.local;
        proxy_ssl_verify off;

        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;

        proxy_set_header Host thinkcentre.local;
        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 https;

        proxy_intercept_errors on;
        error_page 502 503 504 = @fallback;
    }

    # ---- Hauptanwendung ----
    location / {
        auth_request /nginxauth;

        proxy_pass https://$serverBackendSimulation/;
        
        proxy_ssl_server_name on;
        proxy_ssl_name thinkcentre.local;
        proxy_ssl_verify off;

        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;

        proxy_set_header Host thinkcentre.local;
        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 https;
        proxy_set_header Origin $http_origin;

        proxy_hide_header X-Frame-Options;
        add_header X-Frame-Options "ALLOWALL" always;

        proxy_hide_header Content-Security-Policy;
        add_header Content-Security-Policy "frame-ancestors https://server.schooltech.ch" always;
    
        proxy_intercept_errors on;
        error_page 502 503 504 = @fallback;
    }

    # ------------------------------------------------------------
    # location = /nginxauth  (SIMULATION FIX)
    # ------------------------------------------------------------
    location = /nginxauth {
        internal;
        proxy_pass http://$auth_backend/internal/auth;   #***# AUTH
        proxy_set_header Cookie $http_cookie;                 #***# AUTH

        #***# AUTH HEADER ERWEITERUNG
        proxy_set_header X-Original-URI $request_uri;
        proxy_set_header X-Original-Host $host;
        proxy_set_header X-Forwarded-Host $host;
    }
}

# ------------------------------------------------------------
# xyz.server.schooltech.ch (Guacamole )
# ------------------------------------------------------------
server {
    listen 443 ssl http2;
    server_name xyz.server.schooltech.ch;

    ssl_certificate /etc/letsencrypt/live/server.schooltech.ch/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/server.schooltech.ch/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers on;

    set $serverBackendGuacamole "appServer_guacamole:8080";
    
    location @fallback {
        default_type text/html;
        return 200 '
        <html>
            <head>
                <title>Dienst (Guacamole) offline</title>
            </head>
            <body style="font-family:sans-serif;text-align:center;padding-top:10%">
                <h1>Ein Dienst ist momentan nicht erreichbar</h1>
                <p>Bitte Seite neu laden - Verbindung wird automatisch erneut versucht.</p>
            </body>
        </html>';
    }

    location / {
        proxy_pass http://$serverBackendGuacamole;

        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;

        proxy_buffering off;
        proxy_request_buffering off;

        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-Proto https;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Real-IP $remote_addr;

        add_header Content-Security-Policy "frame-ancestors https://server.schooltech.ch" always;
    
        proxy_intercept_errors on;
        error_page 502 503 504 = @fallback;
    }

}

## ------------------------------------------------------------
# portainer.server.schooltech.ch
# ------------------------------------------------------------
server {
    listen 443 ssl http2;
    server_name portainer.server.schooltech.ch;

    ssl_certificate /etc/letsencrypt/live/server.schooltech.ch/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/server.schooltech.ch/privkey.pem;

    set $auth_backend "appServer_Auth:3000";

    location @fallback {
        default_type text/html;
        return 200 '
        <html>
            <head>
                <title>Dienst (Portainer) offline</title>
            </head>
            <body style="font-family:sans-serif;text-align:center;padding-top:10%">
                <h1>Ein Dienst ist momentan nicht erreichbar</h1>
                <p>Bitte Seite neu laden - Verbindung wird automatisch erneut versucht.</p>
            </body>
        </html>';
    }

    location / {

        proxy_pass http://portainer:9000;
        proxy_http_version 1.1;

        proxy_set_header Upgrade $http_upgrade;
        #proxy_set_header Connection "upgrade";
        proxy_set_header Connection $http_connection_upgrade; 

        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-Proto https;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        # WICHTIG FÜR IFRAME
        proxy_hide_header X-Frame-Options;
        proxy_hide_header Content-Security-Policy;

        add_header X-Frame-Options "SAMEORIGIN" always;
        add_header Content-Security-Policy "frame-ancestors https://server.schooltech.ch" always;

        proxy_intercept_errors on;
        error_page 502 503 504 = @fallback;  # <--  Fallback
    }

    location = /nginxauth {
        internal;
        proxy_pass http://$auth_backend/internal/auth;   
        proxy_set_header Cookie $http_cookie;               

        #***# AUTH HEADER ERWEITERUNG
        proxy_set_header X-Original-URI $request_uri;
        proxy_set_header X-Original-Host $host;
        proxy_set_header X-Forwarded-Host $host;
        
        proxy_intercept_errors on;
        error_page 502 503 504 = @fallback;  # <--  Fallback
    }
}
