# /etc/nginx/nginx.conf

user nginx;
worker_processes  1;
daemon off;

# Enables the use of JIT for regular expressions to speed-up their processing.
pcre_jit on;

# Configures default error logger.
error_log /var/log/nginx/error.log warn;

pid        /var/run/nginx.pid;

# Includes files with directives to load dynamic modules.
include /etc/nginx/modules/*.conf;


events {
    # The maximum number of simultaneous connections that can be opened by
    # a worker process.
    worker_connections 1024;
}

http {
    index index.html index.htm;

    server {
        server_name _;
        listen 80;
        listen [::]:80;
        location / {
            rewrite ^ https://$host$request_uri? permanent;
        }
    }

    {{ if service "api" }}
    upstream api_hosts {
        {{range service "api"}}
        server {{.Address}}:{{.Port}};
        {{end}}
    }{{ end }}

    server {
        listen 443 ssl;
        listen [::]:443 ssl;
        root /opt/app/package/build;

        ssl_certificate /etc/nginx/certs/server/server.crt;
        ssl_certificate_key /etc/nginx/certs/server/server.key;
        ssl_client_certificate /etc/nginx/certs/ca/ca.crt;
        ssl_verify_client on;
        ssl_session_timeout 1d;

        ssl_protocols TLSv1.1 TLSv1.2;
        ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!3DES:!MD5:!PSK';

        location / {
            try_files $uri /index.html;
        }
        {{ if service "api" }}
        location /api {
            rewrite /api/(.*) /$1 break;
            proxy_pass http://api_hosts;
            proxy_redirect off;
            proxy_set_header Host $http_host;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Client-Dn $ssl_client_s_dn;
        }{{ end }}
    }

    # Includes mapping of file name extensions to MIME types of responses
    # and defines the default type.
    include /etc/nginx/mime.types;
    default_type application/octet-stream;

    # Name servers used to resolve names of upstream servers into addresses.
    # It's also needed when using tcpsocket and udpsocket in Lua modules.
    #resolver 208.67.222.222 208.67.220.220;

    # Don't tell nginx version to clients.
    server_tokens off;

    # Specifies the maximum accepted body size of a client request, as
    # indicated by the request header Content-Length. If the stated content
    # length is greater than this size, then the client receives the HTTP
    # error code 413. Set to 0 to disable.
    client_max_body_size 1m;

    # Timeout for keep-alive connections. Server will close connections after
    # this time.
    keepalive_timeout 65;

    # Sendfile copies data between one FD and other from within the kernel,
    # which is more efficient than read() + write().
    sendfile on;

    # Don't buffer data-sends (disable Nagle algorithm).
    # Good for sending frequent small bursts of data in real time.
    tcp_nodelay on;

    # Causes nginx to attempt to send its HTTP response head in one packet,
    # instead of using partial frames.
    #tcp_nopush on;

    # Path of the file with Diffie-Hellman parameters for EDH ciphers.
    #ssl_dhparam /etc/ssl/nginx/dh2048.pem;

    # Specifies that our cipher suits should be preferred over client ciphers.
    ssl_prefer_server_ciphers on;

    # Enables a shared SSL cache with size that can hold around 8000 sessions.
    ssl_session_cache shared:SSL:2m;


    # Enable gzipping of responses.
    #gzip on;

    # Set the Vary HTTP header as defined in the RFC 2616.
    gzip_vary on;

    # Enable checking the existence of precompressed files.
    #gzip_static on;


    # Specifies the main log format.
    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent" "$http_x_forwarded_for"';

    # Sets the path, format, and configuration for a buffered log write.
    access_log /var/log/nginx/access.log main;


    # Includes virtual hosts configs.
    # include /etc/nginx/conf.d/*.conf;
}