upstream sal {
  server unix:/opt/pg/tmp/sal-web.socket;
  keepalive 16;
}

upstream websocket {
  server unix:/opt/pg/tmp/sal-ws.socket;
  keepalive 16;
}

upstream pgCli {
  server <%= @nginx_virtual_ip %>:3000;
}

upstream pgMW {
  server <%= @md_ip %>:4000;
}

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

lua_socket_log_errors off;
#lua_code_cache off;
lua_shared_dict rest_servers 16K;
lua_shared_dict apache_servers 16K;
lua_shared_dict tc_servers 16K;
init_by_lua 'lb = require "lb"
init_servers = {
<%- @nginx_real_ips.each do |real| -%>
  ["<%= real %>"] = true,
<%- end -%>
}';

# Redirect http to https
server {
  listen <%= @nginx_virtual_ip %>:9080;
  server_name $hostname;
  return 301 https://$host$request_uri;
}

server {
  listen <%= @nginx_virtual_ip %>:443 ssl;
  ssl_protocols       SSLv3 TLSv1 TLSv1.1 TLSv1.2;
  ssl_ciphers         AES128-SHA:AES256-SHA:RC4-SHA:DES-CBC3-SHA:RC4-MD5;
  ssl_certificate     /opt/pg/sal/nginx/ssl/default.crt;
  ssl_certificate_key /opt/pg/sal/nginx/ssl/default.key;
  #ssl_session_cache   shared:SSL:10m;
  #ssl_session_timeout 10m;

  server_name $hostname;
  root /opt/pg/web;
  index login.html;

  location /cli/ {
    proxy_pass http://pgCli/;
    proxy_redirect off;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_set_header Host $host;
  }

  location /mwv0 {
    proxy_pass http://pgMW;
    proxy_redirect off;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_set_header Host $host;
  }

  location ~ /cloudApex {
    index index.html;
  }

  location ~* /cloudapex {
    rewrite (?i)/cloudapex(.*)$ /cloudApex$1 last;
  }

  location /vtap/ {
    alias /opt/pg/vtap;
  }

  # REST API calls start with /v[0-9]/, a keyword, or a capital letter.
  # Note: Regular expressions have higher precedence than prefix matches
  # so don't combine with /0/...
  location ~ ^/(v[0-9]/|pg/|docs|api-docs|[A-Z]) {
    set $active_upstream "http://sal";
    access_by_lua 'if ngx.req.get_uri_args()["server"]~=nil then
                       if ngx.req.get_uri_args()["server"]~=ngx.var.host then
                           ngx.var.active_upstream = "https://"..ngx.req.get_uri_args()["server"]..ngx.var.request_uri
                       end
                   end';

    proxy_pass $active_upstream;
    proxy_http_version 1.1;
    proxy_set_header Connection "";
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  }

  location /0/ {
    set $active_upstream "http://sal";
    access_by_lua 'if ngx.req.get_uri_args()["server"]~=nil then
                       if ngx.req.get_uri_args()["server"]~=ngx.var.host then
                           ngx.var.active_upstream = "https://"..ngx.req.get_uri_args()["server"]..ngx.var.request_uri
                       end
                   end';

    proxy_pass $active_upstream;
    proxy_http_version 1.1;
    proxy_set_header Connection "";
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  }

  location /0/websocket {
    set $active_upstream "http://websocket";
    access_by_lua 'if ngx.req.get_uri_args()["server"]~=nil then
                       if ngx.req.get_uri_args()["server"]~=ngx.var.host then
                           ngx.var.active_upstream = "https://"..ngx.req.get_uri_args()["server"]..ngx.var.request_uri
                       end
                   end';
    proxy_pass $active_upstream;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $connection_upgrade;
  }
}

server {
  listen unix:/opt/pg/tmp/sal-rest.socket;

  # debug socket
  listen 127.0.0.1:9080;

  location / {
    set $active_upstream "";
    access_by_lua 'ngx.var.active_upstream = find_next(ngx.shared.rest_servers, <%= @rest_port %>)';
    proxy_pass http://$active_upstream:<%= @rest_port %>;
  }

  location /_debug/rest_servers {
    access_by_lua 'find_next(ngx.shared.rest_servers, <%= @rest_port %>)';
    content_by_lua '
      for _, ip in pairs(ngx.shared.rest_servers:get_keys()) do
        ngx.say(ip.."="..ngx.shared.rest_servers:get(ip))
      end
    ';
  }

  location /_debug/tc_servers {
    access_by_lua 'find_next(ngx.shared.tc_servers, 12349)';
    content_by_lua '
      for _, ip in pairs(ngx.shared.tc_servers:get_keys()) do
        ngx.say(ip.."="..ngx.shared.tc_servers:get(ip))
      end
    ';
  }
}