# ====================================================================================
# Configuração NGINX para: pralog.com.br (Proxy Reverso para WordPress)
# Data da Criação/Alteração: 2025-10-08 (v3 - Compressão e Hardening TLS)
#
# Contexto:
# - Adicionada compressão Brotli e Gzip para otimizar a entrega de assets.
# - Realizado hardening na configuração SSL/TLS para nota A+ e compatibilidade Apple.
# - Limpeza do bloco de redirecionamento HTTP.
# ====================================================================================

# --- Definições Globais (fora do bloco 'server') ---
limit_req_zone $binary_remote_addr zone=wp_login:10m rate=5r/m;

map $http_user_agent $block_bad_bots {
    default 0;
    "~*(sqlmap|nikto|wpscan|python-requests|curl|wget|nmap)" 1;
    "~*(nessus|acunetix|masscan|zgrab)" 1;
    "~*BLEXBot" 1;
}

# --- Servidor HTTP (Porta 80) -> Redirecionamento para HTTPS (Formato Limpo) ---
server {
    listen 80;
    listen [::]:80;
    server_name pralog.com.br www.pralog.com.br;

    access_log /var/log/nginx/pralog.com.br.redirects.log;
    error_log /var/log/nginx/pralog.com.br.redirects.error.log;

    # Exceção para o ACME Challenge (Let's Encrypt)
    location /.well-known/acme-challenge/ {
        root /var/www/certbot;
    }

    # Redirecionamento permanente e limpo para HTTPS
    location / {
        return 301 https://$host$request_uri;
    }
}

# --- Servidor HTTPS (Porta 443) - Configuração Principal ---
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name pralog.com.br www.pralog.com.br;

    root /var/www/html; # Fallback

    # Logs Específicos do Site
    access_log /var/log/nginx/pralog.com.br.access.log;
    error_log  /var/log/nginx/pralog.com.br.error.log warn;

    # -----------------------------------------------------------------
    # SSL/TLS - Hardening para Nota A+ e Compatibilidade
    # -----------------------------------------------------------------
    ssl_certificate /etc/letsencrypt/live/pralog.com.br/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/pralog.com.br/privkey.pem;

    # Adicionado TLS 1.3 e uma suíte de ciphers mais ampla para compatibilidade
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers on;
    ssl_ciphers 'ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384';
    
    ssl_session_timeout 1d;
    ssl_session_tickets off;

    # Resolver para OCSP Stapling funcionar corretamente
    resolver 8.8.8.8 1.1.1.1 valid=300s;
    resolver_timeout 5s;
    
    ssl_stapling on;
    ssl_stapling_verify on;
    ssl_trusted_certificate /etc/letsencrypt/live/pralog.com.br/fullchain.pem;

    # -----------------------------------------------------------------
    # Headers de Segurança
    # -----------------------------------------------------------------
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header Referrer-Policy "no-referrer-when-downgrade" always;

    # -----------------------------------------------------------------
    # Compressão (Brotli e Gzip)
    # -----------------------------------------------------------------
    # Brotli (prioridade se o navegador suportar)
    brotli on;
    brotli_comp_level 6;
    brotli_min_length 1024; # Não comprime arquivos menores que 1024 bytes
    brotli_types text/plain text/css application/javascript application/json image/svg+xml application/xml+rss;

    # Gzip (fallback para navegadores sem suporte a Brotli)
    gzip on;
    gzip_min_length 1024; # Não comprime arquivos menores que 1024 bytes
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 5;
    gzip_types text/plain text/css application/javascript application/json image/svg+xml application/xml+rss;

    # ... (Restante do arquivo permanece o mesmo) ...

    # -----------------------------------------------------------------
    # Proteção Contra Bots e Acessos Indevidos
    # -----------------------------------------------------------------
    if ($block_bad_bots) {
        return 404;
    }

    location ~ /\. { deny all; }
    location ~* /(?:setup\.php|README\.md|readme\.html|license\.txt|wp-config-sample\.php|web\.config) { deny all; }
    location ~* \.(env|git|svn|bak|sql|zip|tar\.gz)$ { deny all; }
    location = /xmlrpc.php { deny all; }

    # ... (O restante das suas configurações de location permanecem iguais)
    location = /wp-login.php {
        limit_req zone=wp_login burst=3 nodelay;
        proxy_pass https://172.16.12.25;
        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_ssl_server_name on;
        proxy_ssl_name $host;
        proxy_http_version 1.1;
        proxy_set_header Connection "upgrade";
        proxy_read_timeout 90s;
        proxy_buffering off;
    }

    location ~* \.(jpg|jpeg|gif|png|webp|svg|ico|css|js|woff|woff2|ttf|eot)$ {
        proxy_pass https://172.16.12.25;
        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_ssl_server_name on;
        proxy_ssl_name $host;
        expires 30d;
        add_header Cache-Control "public";
        access_log off;
    }
    
    location / {
        proxy_pass https://172.16.12.25;
        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 X-Forwarded-Port $server_port;
        proxy_ssl_server_name on;
        proxy_ssl_name $host;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_connect_timeout 90s;
        proxy_send_timeout 90s;
        proxy_read_timeout 90s;
        proxy_buffering off;
    }
}