'use strict';

function words(str) {
  var obj = {}, words = str.split(" ");
  for (var i = 0; i < words.length; ++i) obj[words[i]] = true;
  return obj;
}

var keywords = words(
  /* ngxDirectiveControl */ "break return rewrite set" +
    /* ngxDirective */ " accept_mutex accept_mutex_delay access_log add_after_body add_before_body add_header addition_types aio alias allow ancient_browser ancient_browser_value auth_basic auth_basic_user_file auth_http auth_http_header auth_http_timeout autoindex autoindex_exact_size autoindex_localtime charset charset_types client_body_buffer_size client_body_in_file_only client_body_in_single_buffer client_body_temp_path client_body_timeout client_header_buffer_size client_header_timeout client_max_body_size connection_pool_size create_full_put_path daemon dav_access dav_methods debug_connection debug_points default_type degradation degrade deny devpoll_changes devpoll_events directio directio_alignment empty_gif env epoll_events error_log eventport_events expires fastcgi_bind fastcgi_buffer_size fastcgi_buffers fastcgi_busy_buffers_size fastcgi_cache fastcgi_cache_key fastcgi_cache_methods fastcgi_cache_min_uses fastcgi_cache_path fastcgi_cache_use_stale fastcgi_cache_valid fastcgi_catch_stderr fastcgi_connect_timeout fastcgi_hide_header fastcgi_ignore_client_abort fastcgi_ignore_headers fastcgi_index fastcgi_intercept_errors fastcgi_max_temp_file_size fastcgi_next_upstream fastcgi_param fastcgi_pass_header fastcgi_pass_request_body fastcgi_pass_request_headers fastcgi_read_timeout fastcgi_send_lowat fastcgi_send_timeout fastcgi_split_path_info fastcgi_store fastcgi_store_access fastcgi_temp_file_write_size fastcgi_temp_path fastcgi_upstream_fail_timeout fastcgi_upstream_max_fails flv geoip_city geoip_country google_perftools_profiles gzip gzip_buffers gzip_comp_level gzip_disable gzip_hash gzip_http_version gzip_min_length gzip_no_buffer gzip_proxied gzip_static gzip_types gzip_vary gzip_window if_modified_since ignore_invalid_headers image_filter image_filter_buffer image_filter_jpeg_quality image_filter_transparency imap_auth imap_capabilities imap_client_buffer index ip_hash keepalive_requests keepalive_timeout kqueue_changes kqueue_events large_client_header_buffers limit_conn limit_conn_log_level limit_rate limit_rate_after limit_req limit_req_log_level limit_req_zone limit_zone lingering_time lingering_timeout lock_file log_format log_not_found log_subrequest map_hash_bucket_size map_hash_max_size master_process memcached_bind memcached_buffer_size memcached_connect_timeout memcached_next_upstream memcached_read_timeout memcached_send_timeout memcached_upstream_fail_timeout memcached_upstream_max_fails merge_slashes min_delete_depth modern_browser modern_browser_value msie_padding msie_refresh multi_accept open_file_cache open_file_cache_errors open_file_cache_events open_file_cache_min_uses open_file_cache_valid open_log_file_cache output_buffers override_charset perl perl_modules perl_require perl_set pid pop3_auth pop3_capabilities port_in_redirect postpone_gzipping postpone_output protocol proxy proxy_bind proxy_buffer proxy_buffer_size proxy_buffering proxy_buffers proxy_busy_buffers_size proxy_cache proxy_cache_key proxy_cache_methods proxy_cache_min_uses proxy_cache_path proxy_cache_use_stale proxy_cache_valid proxy_connect_timeout proxy_headers_hash_bucket_size proxy_headers_hash_max_size proxy_hide_header proxy_ignore_client_abort proxy_ignore_headers proxy_intercept_errors proxy_max_temp_file_size proxy_method proxy_next_upstream proxy_pass_error_message proxy_pass_header proxy_pass_request_body proxy_pass_request_headers proxy_read_timeout proxy_redirect proxy_send_lowat proxy_send_timeout proxy_set_body proxy_set_header proxy_ssl_session_reuse proxy_store proxy_store_access proxy_temp_file_write_size proxy_temp_path proxy_timeout proxy_upstream_fail_timeout proxy_upstream_max_fails random_index read_ahead real_ip_header recursive_error_pages request_pool_size reset_timedout_connection resolver resolver_timeout rewrite_log rtsig_overflow_events rtsig_overflow_test rtsig_overflow_threshold rtsig_signo satisfy secure_link_secret send_lowat send_timeout sendfile sendfile_max_chunk server_name_in_redirect server_names_hash_bucket_size server_names_hash_max_size server_tokens set_real_ip_from smtp_auth smtp_capabilities smtp_client_buffer smtp_greeting_delay so_keepalive source_charset ssi ssi_ignore_recycled_buffers ssi_min_file_chunk ssi_silent_errors ssi_types ssi_value_length ssl ssl_certificate ssl_certificate_key ssl_ciphers ssl_client_certificate ssl_crl ssl_dhparam ssl_engine ssl_prefer_server_ciphers ssl_protocols ssl_session_cache ssl_session_timeout ssl_verify_client ssl_verify_depth starttls stub_status sub_filter sub_filter_once sub_filter_types tcp_nodelay tcp_nopush thread_stack_size timeout timer_resolution types_hash_bucket_size types_hash_max_size underscores_in_headers uninitialized_variable_warn use user userid userid_domain userid_expires userid_mark userid_name userid_p3p userid_path userid_service valid_referers variables_hash_bucket_size variables_hash_max_size worker_connections worker_cpu_affinity worker_priority worker_processes worker_rlimit_core worker_rlimit_nofile worker_rlimit_sigpending worker_threads working_directory xclient xml_entities xslt_stylesheet xslt_typesdrew@li229-23"
);

var keywords_block = words(
  /* ngxDirectiveBlock */ "http mail events server types location upstream charset_map limit_except if geo map"
);

var keywords_important = words(
  /* ngxDirectiveImportant */ "include root server server_name listen internal proxy_pass memcached_pass fastcgi_pass try_files"
);

var type;
function ret(style, tp) {type = tp; return style;}

function tokenBase(stream, state) {


  stream.eatWhile(/[\w\$_]/);

  var cur = stream.current();


  if (keywords.propertyIsEnumerable(cur)) {
    return "keyword";
  }
  else if (keywords_block.propertyIsEnumerable(cur)) {
    return "controlKeyword";
  }
  else if (keywords_important.propertyIsEnumerable(cur)) {
    return "controlKeyword";
  }
  /**/

  var ch = stream.next();
  if (ch == "@") {stream.eatWhile(/[\w\\\-]/); return ret("meta", stream.current());}
  else if (ch == "/" && stream.eat("*")) {
    state.tokenize = tokenCComment;
    return tokenCComment(stream, state);
  }
  else if (ch == "<" && stream.eat("!")) {
    state.tokenize = tokenSGMLComment;
    return tokenSGMLComment(stream, state);
  }
  else if (ch == "=") ret(null, "compare");
  else if ((ch == "~" || ch == "|") && stream.eat("=")) return ret(null, "compare");
  else if (ch == "\"" || ch == "'") {
    state.tokenize = tokenString(ch);
    return state.tokenize(stream, state);
  }
  else if (ch == "#") {
    stream.skipToEnd();
    return ret("comment", "comment");
  }
  else if (ch == "!") {
    stream.match(/^\s*\w*/);
    return ret("keyword", "important");
  }
  else if (/\d/.test(ch)) {
    stream.eatWhile(/[\w.%]/);
    return ret("number", "unit");
  }
  else if (/[,.+>*\/]/.test(ch)) {
    return ret(null, "select-op");
  }
  else if (/[;{}:\[\]]/.test(ch)) {
    return ret(null, ch);
  }
  else {
    stream.eatWhile(/[\w\\\-]/);
    return ret("variable", "variable");
  }
}

function tokenCComment(stream, state) {
  var maybeEnd = false, ch;
  while ((ch = stream.next()) != null) {
    if (maybeEnd && ch == "/") {
      state.tokenize = tokenBase;
      break;
    }
    maybeEnd = (ch == "*");
  }
  return ret("comment", "comment");
}

function tokenSGMLComment(stream, state) {
  var dashes = 0, ch;
  while ((ch = stream.next()) != null) {
    if (dashes >= 2 && ch == ">") {
      state.tokenize = tokenBase;
      break;
    }
    dashes = (ch == "-") ? dashes + 1 : 0;
  }
  return ret("comment", "comment");
}

function tokenString(quote) {
  return function(stream, state) {
    var escaped = false, ch;
    while ((ch = stream.next()) != null) {
      if (ch == quote && !escaped)
        break;
      escaped = !escaped && ch == "\\";
    }
    if (!escaped) state.tokenize = tokenBase;
    return ret("string", "string");
  };
}

const nginx = {
  startState: function() {
    return {tokenize: tokenBase,
            baseIndent: 0,
            stack: []};
  },

  token: function(stream, state) {
    if (stream.eatSpace()) return null;
    type = null;
    var style = state.tokenize(stream, state);

    var context = state.stack[state.stack.length-1];
    if (type == "hash" && context == "rule") style = "atom";
    else if (style == "variable") {
      if (context == "rule") style = "number";
      else if (!context || context == "@media{") style = "tag";
    }

    if (context == "rule" && /^[\{\};]$/.test(type))
      state.stack.pop();
    if (type == "{") {
      if (context == "@media") state.stack[state.stack.length-1] = "@media{";
      else state.stack.push("{");
    }
    else if (type == "}") state.stack.pop();
    else if (type == "@media") state.stack.push("@media");
    else if (context == "{" && type != "comment") state.stack.push("rule");
    return style;
  },

  indent: function(state, textAfter, cx) {
    var n = state.stack.length;
    if (/^\}/.test(textAfter))
      n -= state.stack[state.stack.length-1] == "rule" ? 2 : 1;
    return state.baseIndent + n * cx.unit;
  },

  languageData: {
    indentOnInput: /^\s*\}$/
  }
};

exports.nginx = nginx;
