# ----------------------------------------------------------------------
# Configuração: Nextcloud AIO + Office Online Server (Nativo)
# Data: 2025-10-25
# Domínio: verbocloud.itguys.com.br
#
# Arquitetura:
# - Nginx (Este servidor)
# - Backend AIO: 172.16.253.13:11500 (HTTP)
# - Backend OOS: 172.16.253.13:80 (HTTPS - Nativo no Windows)
#
# ATUALIZAÇÃO:
# - Adicionado Bloco para Nextcloud Talk (HPB / Push).
# - Adicionado Micro-cache de API (para otimizar Photos, Deck, Notes, etc.)
# - Diretórios de cache EXCLUSIVOS para este site.
# ----------------------------------------------------------------------

# ----------------------------------------------------------------------
# Definições de Cache (EXCLUSIVOS para verbocloud)
# ----------------------------------------------------------------------
proxy_cache_path /var/cache/nginx/verbocloud_session_cache levels=1:2 keys_zone=verbocloud_session_cache:10m inactive=60m max_size=100m;
proxy_cache_path /var/cache/nginx/verbocloud_foldertree_cache levels=1:2 keys_zone=verbocloud_foldertree_cache:10m inactive=1m max_size=100m;

# ----------------------------------------------------------------------
# Declaração dos Backends
# ----------------------------------------------------------------------

# Backend 1: O contêiner do Nextcloud AIO no Windows Server
upstream nextcloud_aio_backend {
    server 172.16.253.13:11580;
}

# Backend 2: O Office Online Server (nativo no Windows Server)
upstream office_online_backend {
    # Assumindo que o OOS está na porta 80 (HTTP)
    server 172.16.253.13:80;
}

# ----------------------------------------------------------------------
# Servidor HTTP (Porta 80)
# - Redireciona para HTTPS
# - Responde aos desafios do Let's Encrypt (Certbot)
# ----------------------------------------------------------------------
server {
    listen 80;
    listen [::]:80;

    server_name verbocloud.itguys.com.br;

    location /.well-known/acme-challenge/ {
        root /var/www/html; # Ajuste o caminho se necessário
        allow all;
    }

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

# ----------------------------------------------------------------------
# Servidor HTTPS (Porta 443)
# - Ponto de terminação SSL
# - Proxy reverso para AIO e OOS
# - Headers de segurança
# ----------------------------------------------------------------------
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;

    server_name verbocloud.itguys.com.br;

    # --- Logs Exclusivos (Conforme solicitado) ---
    access_log /var/log/nginx/verbocloud.itguys.com.br.access.log detailed_proxy;
    error_log /var/log/nginx/verbocloud.itguys.com.br.error.log warn;
    # (Descomente o log de bad-bot quando implementar o $is_bad_bot)
    # access_log /var/log/nginx/verbocloud.itguys.com.br.bad-bot.log suspicious_bot if=$is_bad_bot;

    # --- Configurações de SSL ---
    ssl_certificate /etc/letsencrypt/live/verbocloud.itguys.com.br/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/verbocloud.itguys.com.br/privkey.pem; # managed by Certbot
    ssl_trusted_certificate /etc/letsencrypt/live/verbocloud.itguys.com.br/fullchain.pem;

    # --- Otimizações de TLS (Baseado no SSLLabs e no seu arquivo antigo) ---
    ssl_protocols TLSv1.2 TLSv1.3;
    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_prefer_server_ciphers on;
    ssl_session_timeout 1d;
    ssl_session_tickets off;

    # --- OCSP Stapling ---
    ssl_stapling on;
    ssl_stapling_verify on;
    resolver 1.1.1.1 8.8.8.8 valid=300s; # Usando resolvers públicos
    resolver_timeout 5s;

    # --- Headers de Segurança ---
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;
    add_header X-Content-Type-Options "nosniff" always;
    #add_header X-Frame-Options "SAMEORIGIN" always;
    #add_header Referrer-Policy "no-referrer" always;
    #add_header X-XSS-Protection "1; mode=block" always;

    # --- Configurações do Proxy ---
    client_max_body_size 10G;

    brotli on;
    brotli_comp_level 6;
    brotli_min_length 1024;
    brotli_types application/atom+xml application/javascript application/json application/rss+xml application/vnd.ms-fontobject application/x-font-opentype application/x-font-truetype application/x-font-ttf application/x-javascript application/xhtml+xml application/xml font/eot font/opentype font/otf font/truetype image/svg+xml image/x-icon text/css text/javascript text/plain text/xml;
    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_min_length 1024;
    gzip_types application/atom+xml application/javascript application/json application/rss+xml application/vnd.ms-fontobject application/x-font-opentype application/x-font-truetype application/x-font-ttf application/x-javascript application/xhtml+xml application/xml font/eot font/opentype font/otf font/truetype image/svg+xml image/x-icon text/css text/javascript text/plain text/xml;

    # ---------------------------------------------------
    # REGRAS DO OFFICE ONLINE SERVER (OOS)
    # (Estas devem vir ANTES do location / principal)
    # ---------------------------------------------------

    # Rota de Descoberta (Discovery)
    location = /hosting/discovery {
        proxy_pass http://office_online_backend;
        # ===> ATENÇÃO: Substitua pelo Hostname INTERNO que o OOS espera <===
        proxy_set_header Host "nextcloud001";
        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 Accept-Encoding "";
	sub_filter 'http://nextcloud001' 'https://verbocloud.itguys.com.br';
        sub_filter_once off;
        sub_filter_types text/xml application/xml;
	proxy_ssl_verify off;
    }

    location ~ ^/(m|x|we|o|p|wv|op|wd|rtc|rtc2|layouts|view|_layouts)/ {
        proxy_pass http://office_online_backend;
        proxy_set_header Host "nextcloud001";
        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_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Accept-Encoding "";
        sub_filter_types text/css text/javascript application/javascript application/json;
	proxy_ssl_verify off;
        if ($request_method = 'OPTIONS') {
            more_set_headers 'Access-Control-Allow-Origin: "$scheme://$http_host"';
            more_set_headers 'Access-Control-Allow-Methods: GET, POST, OPTIONS, HEAD';
            more_set_headers 'Access-Control-Allow-Headers: Authorization, Content-Type, Accept, Origin, User-Agent, DNT, Cache-Control, X-Mx-ReqToken, Keep-Alive, X-Requested-With, If-Modified-Since, X-UserType';
            more_set_headers 'Access-Control-Allow-Credentials: true' always;
            more_set_headers 'Access-Control-Max-Age: 1728000' always;
            return 204;
        }

        more_set_headers 'Access-Control-Allow-Origin: "$scheme://$http_host"';
        more_set_headers 'Access-Control-Allow-Credentials: true';
    }

    #location ~* \.(?:css|js|mjs|svg|gif|png|jpg|jpeg|ico|wasm|woff|woff2|ttf|otf|map)$ {
    #    proxy_pass http://nextcloud_backend;
    #    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_cache nextcloud_cache;
    #    proxy_cache_valid 200 30d;
    #    proxy_cache_valid any 1m;
        
    #    more_set_headers 'Cache-Control: public, max-age=31536000, immutable';
    #    more_set_headers 'X-Proxy-Cache: $upstream_cache_status';
        
    #    expires 1y;
    #    proxy_hide_header "Cache-Control";
    #    proxy_hide_header "Expires";
    #    proxy_hide_header "Pragma";
    #    brotli_static on;
    #    gzip_static on;
    #}
    
    # ---------------------------------------------------
    # REGRAS DO NEXTCLOUD AIO
    # (Um único location / para capturar tudo)
    # ---------------------------------------------------

    # Redirecionamentos CalDAV/CardDAV
    location = /.well-known/carddav { return 301 /remote.php/dav; }
    location = /.well-known/caldav  { return 301 /remote.php/dav; }
    location = /.well-known/webfinger { return 301 /index.php/.well-known/webfinger; }
    location = /.well-known/nodeinfo { return 301 /index.php/.well-known/nodeinfo; }

    # Regra Principal (Nextcloud AIO)
    location / {
        proxy_pass http://nextcloud_aio_backend;
        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;

        # --- Headers de WebSocket e Otimizações AIO ---
        # (Isso garante que /push/, /whiteboard/ e /standalone-signaling/ funcionem)
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_buffering off;
        proxy_request_buffering off;
        
        # Timeouts longos
        proxy_connect_timeout 3600s;
        proxy_send_timeout 3600s;
        proxy_read_timeout 3600s;
    }
}