# Redirect HTTP → HTTPS (except ACME challenges)
server {
    listen 80;
    server_name {{ matrix_domain }} {{ landing_domain }};

    # ACME-challenge (for Let's Encrypt)
    location ~ /.well-known/acme-challenge/ {
        root /var/www;
        try_files $uri =404;
    }

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

# HTTPS server
server {
    listen 443 ssl http2;
    server_name {{ matrix_domain }};

    # TLS certs (mounted from Let's Encrypt dir)
    ssl_certificate /etc/letsencrypt/live/{{ matrix_domain }}/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/{{ matrix_domain }}/privkey.pem;
    ssl_trusted_certificate /etc/letsencrypt/live/{{ matrix_domain }}/chain.pem;

    ssl_session_cache shared:SSL:10m;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;

    # Serve static site (root)
    location / {
        root /usr/share/nginx/html/mysite;
        try_files $uri $uri/ /index.html;
    }

    # Matrix Synapse (client)
    location /_matrix/ {
        proxy_pass http://127.0.0.1:8008/_matrix/;
        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;
    }

    # Federation
    location /_matrix/federation/v1/ {
        proxy_pass http://127.0.0.1:8448/_matrix/federation/v1/;
        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;
    }

    # Optional: Add a Matrix admin link
    location /admin {
        return 301 https://matrix-admin.example.com; # or proxy to a UI like SynapseAdmin
    }
}

#--- Coturn changes --- #

# TURN over TLS (port 443) — proxied to Coturn's 5349
# Only needed if you want TURN on 443 (avoids firewall issues)
map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
}

upstream coturn_tls {
    server 127.0.0.1:5349;
}

server {
    listen 443 ssl http2;
    server_name {{ matrix_domain }};

    # ... [existing TLS config] ...

    # TURN over TLS (for UDP/TCP fallback on port 443)
    location /turn {
        proxy_pass https://coturn_tls;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_set_header Host $host;
        proxy_read_timeout 86400;
    }

    # Or simpler: proxy UDP via a dedicated TCP tunnel (advanced)
    # For most cases, just expose 3478/5349 directly → no Nginx needed!
}