user nginx;
worker_processes auto;

error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
    worker_connections 4096;
}

http {
    include /etc/nginx/mime.types;
    default_type application/octet-stream;

    ssl_session_cache shared:SSL:50m;
    ssl_session_timeout 1d;
    ssl_session_tickets off;
    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;
    ssl_ecdh_curve X25519:secp521r1:secp384r1;
    ssl_prefer_server_ciphers on;
    ssl_stapling on;
    ssl_stapling_verify on;
    resolver 1.1.1.1 1.0.0.1 8.8.8.8 valid=300s;
    resolver_timeout 5s;

    add_header X-Content-Type-Options "nosniff" always;
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-XSS-Protection "0";
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;
    add_header Permissions-Policy "accelerometer=(), camera=(), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), payment=(), usb=()" always;
    add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https:; img-src 'self' data: https:; style-src 'self' 'unsafe-inline' https:; font-src 'self' https:; frame-ancestors 'none'; form-action 'self'; object-src 'none'; base-uri 'self';" always;

    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 75;
    client_body_timeout 15;
    client_header_timeout 15;
    reset_timedout_connection on;
    send_timeout 15;

    client_body_buffer_size 128k;
    client_header_buffer_size 4k;
    client_max_body_size 100M;
    large_client_header_buffers 4 16k;

    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_min_length 1024;
    gzip_types
        text/plain
        text/css
        text/xml
        text/javascript
        application/json
        application/javascript
        application/x-javascript
        application/xml
        application/xml+rss
        font/woff
        font/woff2
        image/svg+xml;

    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent" "$http_x_forwarded_for"';

    access_log /var/log/nginx/access.log main;

    server_tokens off;

    server {
        listen 80 default_server;
        listen [::]:80 default_server;
        server_name _;
        return 301 https://$host$request_uri;
    }

    server {
        listen 443 ssl http2 default_server;
        listen [::]:443 ssl http2 default_server;
        server_name prod-team-15-2pc0i3lc.final.prodcontest.ru;

        ssl_certificate /etc/nginx/certs/fullchain.pem;
        ssl_certificate_key /etc/nginx/certs/privkey.pem;

        add_header X-Frame-Options "SAMEORIGIN" always;
        add_header X-Content-Type-Options "nosniff" always;

        location / {
            proxy_pass http://frontend:80;
            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 $scheme;

            proxy_cache_bypass $http_upgrade;
            proxy_hide_header X-Powered-By;

            proxy_connect_timeout 75s;
            proxy_send_timeout 600s;
            proxy_read_timeout 600s;
        }

        location /api {
            proxy_pass http://backend:8080;
            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 $scheme;

            if ($request_method = 'OPTIONS') {
                add_header 'Access-Control-Allow-Origin' "$http_origin";
                add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS';
                add_header 'Access-Control-Allow-Headers' 'Authorization, Content-Type, X-Requested-With';
                add_header 'Access-Control-Max-Age' 1728000;
                add_header 'Content-Type' 'text/plain; charset=UTF-8';
                add_header 'Content-Length' 0;
                return 204;
            }

            add_header 'Access-Control-Allow-Origin' "$http_origin" always;
            add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
            add_header 'Access-Control-Allow-Headers' 'Authorization, Content-Type, X-Requested-With' always;
            add_header 'Access-Control-Allow-Credentials' 'true' always;

            proxy_buffering off;
            proxy_request_buffering off;
            client_max_body_size 100M;
        }

        error_page 404 = @notfound;
        location @notfound {
            return 444;
        }
    }
}