/*
 Licensed to the Apache Software Foundation (ASF) under one or more
 contributor license agreements.  See the NOTICE file distributed with
 this work for additional information regarding copyright ownership.
 The ASF licenses this file to You under the Apache License, Version 2.0
 (the "License"); you may not use this file except in compliance with
 the License.  You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
*/

var loader = {
    
  show : function( element )
  {
    $( element )
      .addClass( 'loader' );
  },
    
  hide : function( element )
  {
    $( element )
      .removeClass( 'loader' );
  }
    
};

Number.prototype.esc = function()
{
  return new String( this ).esc();
}

String.prototype.esc = function()
{
  return this.replace( /</g, '&lt;' ).replace( />/g, '&gt;' );
}

SolrDate = function( date )
{
  // ["Sat Mar 03 11:00:00 CET 2012", "Sat", "Mar", "03", "11:00:00", "CET", "2012"]
  var parts = date.match( /^(\w+)\s+(\w+)\s+(\d+)\s+(\d+\:\d+\:\d+)\s+(\w+)\s+(\d+)$/ );
    
  // "Sat Mar 03 2012 10:37:33"
  return new Date( parts[1] + ' ' + parts[2] + ' ' + parts[3] + ' ' + parts[6] + ' ' + parts[4] );
}

var sammy = $.sammy
(
  function()
  {
    this.bind
    (
      'run',
      function( event, config )
      {
        if( 0 === config.start_url.length )
        {
          location.href = '#/';
          return false;
        }
      }
    );

    this.bind
    (
      'error',
      function( message, original_error )
      {
        alert( original_error.message );
      }
    );
        
    // activate_core
    this.before
    (
      {},
      function( context )
      {
        app.clear_timeout();

        var menu_wrapper = $( '#menu-wrapper' );

        $( 'li[id].active', menu_wrapper )
          .removeClass( 'active' );
                
        $( 'li.active', menu_wrapper )
          .removeClass( 'active' );

        if( this.params.splat )
        {
          var selector = '~' === this.params.splat[0][0]
                       ? '#' + this.params.splat[0].replace( /^~/, '' ) + '.global'
                       : '#menu-selector #' + this.params.splat[0].replace( /\./g, '__' );

          var active_element = $( selector, menu_wrapper );
                    
          if( 0 === active_element.size() )
          {
            this.app.error( 'There exists no core with name "' + this.params.splat[0] + '"' );
            return false;
          }

          active_element
            .addClass( 'active' );

          if( this.params.splat[1] )
          {
            $( '.' + this.params.splat[1], active_element )
              .addClass( 'active' );
          }

          if( !active_element.hasClass( 'global' ) )
          {
            this.active_core = active_element;
          }
        }
      }
    );
  }
);

var solr_admin = function( app_config )
{
  that = this,

  menu_element = null,

  is_multicore = null,
  cores_data = null,
  active_core = null,
  environment_basepath = null,
    
  config = app_config,
  params = null,
  dashboard_values = null,
  schema_browser_data = null,

  plugin_data = null,
    
  this.menu_element = $( '#menu-selector' );
  this.config = config;

  this.timeout = null;

  this.core_regex_base = '^#\\/([\\w\\d-\\.]+)';

  show_global_error = function( error )
  {
    var main = $( '#main' );

    $( 'div[id$="-wrapper"]', main )
      .remove();

    main
      .addClass( 'error' )
      .append( error );

    var pre_tags = $( 'pre', main );
    if( 0 !== pre_tags.size() )
    {
      hljs.highlightBlock( pre_tags.get(0) ); 
    }
  };

  sort_cores_data = function sort_cores_data( cores_status )
  {
    // build array of core-names for sorting
    var core_names = [];
    for( var core_name in cores_status )
    {
      core_names.push( core_name );
    }
    core_names.sort();

    var core_count = core_names.length;
    var cores = {};

    for( var i = 0; i < core_count; i++ )
    {
      var core_name = core_names[i];
      cores[core_name] = cores_status[core_name];
    }

    return cores;
  };

  this.set_cores_data = function set_cores_data( cores )
  {
    that.cores_data = sort_cores_data( cores.status );
    
    that.menu_element
      .empty();

    var core_count = 0;
    for( var core_name in that.cores_data )
    {
      core_count++;
      var core_path = config.solr_path + '/' + core_name;
      var classes = [];

      if( !environment_basepath )
      {
        environment_basepath = core_path;
      }

      if( cores.status[core_name]['isDefaultCore'] )
      {
        classes.push( 'default' );
      }

      var core_tpl = '<li id="' + core_name.replace( /\./g, '__' ) + '" '
                   + '    class="' + classes.join( ' ' ) + '"'
                   + '    data-basepath="' + core_path + '"'
                   + '    schema="' + cores.status[core_name]['schema'] + '"'
                   + '    config="' + cores.status[core_name]['config'] + '"'
                   + '>' + "\n"
                   + '  <p><a href="#/' + core_name + '" title="' + core_name + '">' + core_name + '</a></p>' + "\n"
                   + '  <ul>' + "\n"

                   + '    <li class="ping"><a rel="' + core_path + '/admin/ping"><span>Ping</span></a></li>' + "\n"
                   + '    <li class="query"><a href="#/' + core_name + '/query"><span>Query</span></a></li>' + "\n"
                   + '    <li class="schema"><a href="#/' + core_name + '/schema"><span>Schema</span></a></li>' + "\n"
                   + '    <li class="config"><a href="#/' + core_name + '/config"><span>Config</span></a></li>' + "\n"
                   + '    <li class="replication"><a href="#/' + core_name + '/replication"><span>Replication</span></a></li>' + "\n"
                   + '    <li class="analysis"><a href="#/' + core_name + '/analysis"><span>Analysis</span></a></li>' + "\n"
                   + '    <li class="schema-browser"><a href="#/' + core_name + '/schema-browser"><span>Schema Browser</span></a></li>' + "\n"
                   + '    <li class="plugins"><a href="#/' + core_name + '/plugins"><span>Plugins / Stats</span></a></li>' + "\n"
                   + '    <li class="dataimport"><a href="#/' + core_name + '/dataimport"><span>Dataimport</span></a></li>' + "\n"

                   + '    </ul>' + "\n"
                   + '</li>';

      that.menu_element
        .append( core_tpl );
    }

    if( cores.initFailures )
    {
      var failures = [];
      for( var core_name in cores.initFailures )
      {
        failures.push
        (
          '<li>' +
            '<strong>' + core_name.esc() + ':</strong>' + "\n" +
            cores.initFailures[core_name].esc() + "\n" +
          '</li>'
        );
      }

      if( 0 !== failures.length )
      {
        var init_failures = $( '#init-failures' );

        init_failures.show();
        $( 'ul', init_failures ).html( failures.join( "\n" ) );
      }
    }

    if( 0 === core_count )
    {
      show_global_error
      ( 
        '<div class="message">There are no SolrCores running. <br/> Using the Solr Admin UI currently requires at least one SolrCore.</div>'
      );
    } // else: we have at least one core....
  };

  this.run = function()
  {
    $.ajax
    (
      {
        url : config.solr_path + config.core_admin_path + '?wt=json&indexInfo=false',
        dataType : 'json',
        beforeSend : function( arr, form, options )
        {               
          $( '#content' )
            .html( '<div id="index"><div class="loader">Loading ...</div></div>' );
        },
        success : function( response )
        {
          that.set_cores_data( response );

          for( var core_name in response.status )
          {
            var core_path = config.solr_path + '/' + core_name;
            if( !environment_basepath )
            {
              environment_basepath = core_path;
            }
          }

          var system_url = environment_basepath + '/admin/system?wt=json';
          $.ajax
          (
            {
              url : system_url,
              dataType : 'json',
              beforeSend : function( arr, form, options )
              {
              },
              success : function( response )
              {
                that.dashboard_values = response;

                var environment_args = null;
                var cloud_args = null;

                if( response.jvm && response.jvm.jmx && response.jvm.jmx.commandLineArgs )
                {
                  var command_line_args = response.jvm.jmx.commandLineArgs.join( ' | ' );

                  environment_args = command_line_args.match( /-Dsolr.environment=((dev|test|prod)?[\w\d]*)/i );
                  cloud_args = command_line_args.match( /-Dzk/i );
                }

                // title

                $( 'title', document )
                  .append( ' (' + response.core.host + ')' );

                // environment

                var wrapper = $( '#wrapper' );
                var environment_element = $( '#environment' );
                if( environment_args )
                {
                  wrapper
                    .addClass( 'has-environment' );

                  if( environment_args[1] )
                  {
                    environment_element
                      .html( environment_args[1] );
                  }

                  if( environment_args[2] )
                  {
                    environment_element
                      .addClass( environment_args[2] );
                  }
                }
                else
                {
                  wrapper
                    .removeClass( 'has-environment' );
                }

                // cloud

                var cloud_nav_element = $( '#menu #cloud' );
                if( cloud_args )
                {
                  cloud_nav_element
                    .show();
                }

                // sammy

                sammy.run( location.hash );
              },
              error : function()
              {
                show_global_error
                (
                  '<div class="message"><p>Unable to load environment info from <code>' + system_url.esc() + '</code>.</p>' +
                  '<p>This interface requires that you activate the admin request handlers in all SolrCores by adding the ' +
                  'following configuration to your <code>solrconfig.xml</code>:</p></div>' + "\n" +

                  '<div class="code"><pre class="syntax language-xml"><code>' +
                  '<!-- Admin Handlers - This will register all the standard admin RequestHandlers. -->'.esc() + "\n" +
                  '<requestHandler name="/admin/" class="solr.admin.AdminHandlers" />'.esc() +
                  '</code></pre></div>'
                );
              },
              complete : function()
              {
                loader.hide( this );
              }
            }
          );
        },
        error : function()
        {
        },
        complete : function()
        {
        }
      }
    );
  };

  this.convert_duration_to_seconds = function convert_duration_to_seconds( str )
  {
    var seconds = 0;
    var arr = new String( str || '' ).split( '.' );
    var parts = arr[0].split( ':' ).reverse();
    var parts_count = parts.length;

    for( var i = 0; i < parts_count; i++ )
    {
      seconds += ( parseInt( parts[i], 10 ) || 0 ) * Math.pow( 60, i );
    }

    // treat more or equal than .5 as additional second
    if( arr[1] && 5 <= parseInt( arr[1][0], 10 ) )
    {
      seconds++;
    }

    return seconds;
  };

  this.convert_seconds_to_readable_time = function convert_seconds_to_readable_time( seconds )
  {
    seconds = parseInt( seconds || 0, 10 );
    var minutes = Math.floor( seconds / 60 );
    var hours = Math.floor( minutes / 60 );

    var text = [];
    if( 0 !== hours )
    {
      text.push( hours + 'h' );
      seconds -= hours * 60 * 60;
      minutes -= hours * 60;
    }

    if( 0 !== minutes )
    {
      text.push( minutes + 'm' );
      seconds -= minutes * 60;
    }

    if( 0 !== seconds )
    {
      text.push( ( '0' + seconds ).substr( -2 ) + 's' );
    }

    return text.join( ' ' );
  };

  this.clear_timeout = function clear_timeout()
  {
    if( !app.timeout )
    {
      return false;
    }

    console.debug( 'Clearing Timeout #' + this.timeout );
    clearTimeout( this.timeout );
    this.timeout = null;
  };

  this.format_json = function format_json( json_str )
  {
    if( JSON.stringify && JSON.parse )
    {
      json_str = JSON.stringify( JSON.parse( json_str ), undefined, 2 );
    }

    return json_str;
  };

  this.format_number = function format_number( number )
  {
    return ( number || 0 ).toString().replace( /\B(?=(\d{3})+(?!\d))/g, ' ' );
  };

};

var app = new solr_admin( app_config );