upstream redis_server {
    nchan_redis_server "redis://redis:6379";
}

resolver 127.0.0.11;

map $http_x_forwarded_for $proxy_x_forwarded_for {
  default $http_x_forwarded_for;
  ''      $remote_addr;
}

map $http_x_forwarded_proto $proxy_x_forwarded_proto {
  default $http_x_forwarded_proto;
  ''      $scheme;
}

map $http_x_forwarded_port $proxy_x_forwarded_port {
  default $http_x_forwarded_port;
  ''      $server_port;
}

map $http_upgrade $proxy_connection {
  default upgrade;
  '' close;
}

map $scheme $proxy_x_forwarded_ssl {
  default off;
  https on;
}

# HTTP 1.1 support
proxy_http_version 1.1;
proxy_buffering off;
proxy_set_header Origin $http_origin;
proxy_set_header Host $http_host;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $proxy_connection;
proxy_set_header X-Real-IP $proxy_x_forwarded_for;
proxy_set_header X-Forwarded-For $proxy_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $proxy_x_forwarded_proto;
proxy_set_header X-Forwarded-Ssl $proxy_x_forwarded_ssl;
proxy_set_header X-Forwarded-Port $proxy_x_forwarded_port;

# Mitigate httpoxy attack (see README for details)
proxy_set_header Proxy "";

server {
    listen 9010;

    location ~ /pub/(\w+)$ {
        nchan_publisher;
        nchan_redis_pass redis_server;

        nchan_channel_group "azuracast_nowplaying";
        nchan_channel_id $1;

        nchan_message_buffer_length 1;
        nchan_message_timeout 16s;
    }
}

server {
    listen 80;

    root /var/azuracast/www/web;
    index index.php;

    server_name localhost;

    add_header X-XSS-Protection 1;
    add_header X-Content-Type-Options nosniff;
    add_header Referrer-Policy no-referrer-when-downgrade;

    # Serve a static version of the nowplaying data for non-PHP-blocking delivery.
    location /api/nowplaying_static {
        expires 10s;
        add_header Access-Control-Allow-Origin *;

        alias /var/azuracast/www_tmp/nowplaying;
        try_files $uri =404;
    }

    # Default clean URL routing
    location / {
        try_files $uri @clean_url;
    }

    location @clean_url {
        rewrite ^(.*)$ /index.php last;
    }

    # Set up caching for static assets.
    location /static {
        add_header Access-Control-Allow-Origin *;
    }

    location /static/dist {
        expires 365d;
    }

    location ~ ^/index\.php(/|$) {
        fastcgi_split_path_info ^(.+\.php)(/.+)$;

        # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
        fastcgi_pass localhost:9000;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
        fastcgi_param DOCUMENT_ROOT $realpath_root;
        include fastcgi_params;

        fastcgi_read_timeout {{ default .Env.NGINX_TIMEOUT "1800" }};
        fastcgi_buffering off;

        internal;
    }

    # Return 404 for all other php files not matching the front controller
    location ~ \.php$ {
        return 404;
    }

    # Reverse proxy all possible radio listening ports (8000, 8010...8480, 8490)
    location ~ ^/radio/(8[0-9][0-9]0)(/?)(.*)$ {
        proxy_buffering           off;
        proxy_ignore_client_abort off;
        proxy_intercept_errors    on;
        proxy_next_upstream       error timeout invalid_header;
        proxy_redirect            off;
        proxy_connect_timeout     60;
        proxy_send_timeout        21600;
        proxy_read_timeout        21600;

        proxy_set_header Host localhost:$1;
        proxy_pass http://stations:$1/$3?$args;
    }

    # Reverse proxy the Liquidsoap harbor inputs to allow for streaming.
    location ~ ^/radio/(8[0-9][0-9]5)(/?)(.*)$ {
        resolver 127.0.0.11;

        proxy_buffering           off;
        proxy_ignore_client_abort off;
        proxy_send_timeout        21600;
        proxy_read_timeout        21600;

        proxy_pass http://stations:$1/$3;
    }

    # pub/sub endpoints
    location ~ /api/live/nowplaying/(\w+)$ {
        nchan_access_control_allow_origin "*";

        nchan_subscriber;
        nchan_redis_pass redis_server;

        nchan_channel_group "azuracast_nowplaying";
        nchan_channel_id "$1";
        nchan_channel_id_split_delimiter ",";

        nchan_subscriber_first_message -1;
    }

    # deny access to .htaccess files, if Apache's document root
    # concurs with nginx's one
    location ~ /\.ht {
        deny all;
    }

    # Internal handlers used by the application to perform X-Accel-Redirect's for higher performance.
    location /internal/backups/ {
        internal;
        alias /var/azuracast/backups/;
    }

    location /internal/stations/ {
        internal;
        alias /var/azuracast/stations/;
    }

    include /etc/nginx/azuracast.conf.d/*.conf;
}