# HTTP -> HTTPS редирект
server {
    listen 80;
    listen [::]:80;
    server_name moderation.nkm.guru;
    
    # Let's Encrypt challenge
    location /.well-known/acme-challenge/ {
        root /var/www/certbot;
    }
    
    location / {
        return 301 https://$server_name$request_uri;
    }
}

# HTTPS сервер
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name moderation.nkm.guru;

    # SSL сертификаты (Let's Encrypt)
    ssl_certificate /etc/letsencrypt/live/moderation.nkm.guru/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/moderation.nkm.guru/privkey.pem;
    
    # SSL настройки
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;
    ssl_prefer_server_ciphers on;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 10m;

    # Security headers
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Referrer-Policy "no-referrer-when-downgrade" always;
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;

    # Логи
    access_log /var/log/nginx/moderation-access.log;
    error_log /var/log/nginx/moderation-error.log;

    # Максимальный размер загружаемых файлов
    client_max_body_size 20M;

    # Корневая директория фронтенда
    root /var/www/nakama/moderation/frontend/dist;
    index index.html;

    # Gzip compression
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_types text/plain text/css text/xml text/javascript 
               application/json application/javascript application/xml+rss 
               application/rss+xml font/truetype font/opentype 
               application/vnd.ms-fontobject image/svg+xml;

    # Проксирование API запросов к бэкенду модерации
    # ИЗМЕНИТЕ localhost:3001 на ваш реальный адрес бэкенда
    location /api {
        proxy_pass http://127.0.0.1:3001;
        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 https;  # Всегда HTTPS
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Port 443;
        
        # WebSocket поддержка
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        
        # Таймауты
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
        
        # Отключить буферизацию для реального времени
        proxy_buffering off;
    }

    # WebSocket для чата модераторов
    location /mod-chat {
        proxy_pass http://127.0.0.1:3001;
        proxy_http_version 1.1;
        
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        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 https;  # Всегда HTTPS
        proxy_set_header X-Forwarded-Port 443;
        
        # Таймауты для WebSocket
        proxy_connect_timeout 7d;
        proxy_send_timeout 7d;
        proxy_read_timeout 7d;
        
        proxy_buffering off;
    }

    # Статические файлы фронтенда
    location / {
        try_files $uri $uri/ /index.html;
    }

    # Кэширование статических файлов
    location ~* \.(jpg|jpeg|png|gif|ico|css|js|svg|woff|woff2|ttf|eot|map)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        access_log off;
    }

    # Без кэша для index.html (для обновлений)
    location = /index.html {
        add_header Cache-Control "no-cache, no-store, must-revalidate";
        add_header Pragma "no-cache";
        add_header Expires "0";
    }
}