# /etc/nginx/nginx.conf

# for docker, must set daemon to off
daemon off;

user nginx;

# Set number of worker processes automatically based on number of CPU cores.
worker_processes auto;

# 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;

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

# Uncomment to include files with config snippets into the root context.
# NOTE: This will be enabled by default in Alpine 3.15.
#include /etc/nginx/conf.d/*.conf;

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

http {
    # 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 1.1.1.1 1.0.0.1 2606:4700:4700::1111 2606:4700:4700::1001;

    # Don't tell nginx version to the clients. Default is 'on'.
    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. Default is '1m'.
    client_max_body_size 64M;
    client_header_buffer_size 16k;
    large_client_header_buffers 4 16k;

    ## Cache open FD
    open_file_cache max=10000 inactive=3600s;
    open_file_cache_valid 7200s;
    open_file_cache_min_uses 2;

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

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

    # Enables the specified protocols. Default is TLSv1 TLSv1.1 TLSv1.2.
    # TIP: If you're not obligated to support ancient clients, remove TLSv1.1.
    ssl_protocols TLSv1.1 TLSv1.2 TLSv1.3;

    # Path of the file with Diffie-Hellman parameters for EDH ciphers.
    # TIP: Generate with: `openssl dhparam -out /etc/ssl/nginx/dh2048.pem 2048`
    #ssl_dhparam /etc/ssl/nginx/dh2048.pem;

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

    # Enables a shared SSL cache with size that can hold around 8000 sessions.
    # Default is 'none'.
    ssl_session_cache shared:SSL:2m;

    # Specifies a time during which a client may reuse the session parameters.
    # Default is '5m'.
    ssl_session_timeout 1h;

    # Disable TLS session tickets (they are insecure). Default is 'on'.
    ssl_session_tickets off;


    # Enable gzipping of responses.
    gzip on;

    # Set the Vary HTTP header as defined in the RFC 2616. Default is 'off'.
    gzip_vary on;

    gzip_proxied        any;
    gzip_types          application/javascript application/x-javascript application/rss+xml text/javascript text/css image/svg+xml;
    gzip_buffers        16 8k;
    gzip_comp_level     6;

    # Helper variable for proxying websockets.
    map $http_upgrade $connection_upgrade {
        default upgrade;
        '' close;
    }


    # 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/http.d/*.conf;
    keepalive_timeout  15;
    port_in_redirect   off;
    absolute_redirect  off;

    # preview-zh.pingcap.com
    server {
        listen 80 default_server;
        listen [::]:80 default_server;
        server_name preview-zh.pingcap.com;
        server_name preview-cn.pingcap.com;
        server_name preview.www.pingcap.com;

        access_log   /var/log/nginx/preview-zh.pingcap.com.access.log main;
        error_log    /var/log/nginx/preview-zh.pingcap.com.error.log error;

        error_page 404 403 /404.html;

        location = / {
            if ($http_referer ~* https://preview-zh.pingcap.com/zh) {
                rewrite ^/(.*)$ https://preview-en.pingcap.com;
            }
            if ($http_referer = "") {
                rewrite ^/(.*)$ https://preview-zh.pingcap.com/zh;
            }

            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-Host   $host:$server_port;
            proxy_set_header   X-Forwarded-Server $host;
            proxy_set_header   X-Forwarded-Proto  $scheme;
            proxy_pass http://website-preview:80;

            auth_basic "authentication";
            auth_basic_user_file conf.d/.htpasswd;
        }

        location / {
            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-Host   $host:$server_port;
            proxy_set_header   X-Forwarded-Server $host;
            proxy_set_header   X-Forwarded-Proto  $scheme;
            proxy_pass http://website-preview:80;

            auth_basic "authentication";
            auth_basic_user_file conf.d/.htpasswd;
        }

        location /events/devcon2022 {
            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-Host   $host:$server_port;
            proxy_set_header   X-Forwarded-Server $host;
            proxy_set_header   X-Forwarded-Proto  $scheme;
            proxy_pass http://106.75.86.110/;

            auth_basic "authentication";
            auth_basic_user_file conf.d/.htpasswd;
        }
    }

    # preview-en.pingcap.com
    server {
        listen 80;
        listen [::]:80;
        server_name preview-en.pingcap.com;

        access_log   /var/log/nginx/preview-en.pingcap.com.access.log main;
        error_log    /var/log/nginx/preview-en.pingcap.com.error.log error;

        error_page 404 403 /404.html;

        return 301 https://$server_name$request_uri;
    }
    server {
        listen 443 ssl;
        server_name preview-en.pingcap.com;

        ssl_certificate /app/cert/preview-en.pingcap.com/preview-en.pingcap.com.cer;
        ssl_certificate_key /app/cert/preview-en.pingcap.com/preview-en.pingcap.com.key;

        access_log   /var/log/nginx/preview-en.pingcap.com.access.log main;
        error_log    /var/log/nginx/preview-en.pingcap.com.error.log error;

        location / {
            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-Host   $host:$server_port;
            proxy_set_header   X-Forwarded-Server $host;
            proxy_set_header   X-Forwarded-Proto  $scheme;
            proxy_pass http://pingcap_website_en_php_apache:80;

            auth_basic "authentication";
            auth_basic_user_file conf.d/.htpasswd;
        }
    }
}

# TIP: Uncomment if you use stream module.
#include /etc/nginx/stream.conf;