exports.render_event_records = function () {
  console.log('Rendering event records...');
  //console.log(tbl_event);
  //console.log(event_id);
  
  tbl_event.iterate(function(value, key, iteration) {
    if (value.id == event_id) {
      console.log('*** Event id ('+event_id+') found in table.');
      document.getElementById('event_name').innerHTML = '@'+value.name;
    } else {
      console.log('Event not it.');
    }
  }).then(function() {
    console.log('idb_to_ui: Iterate tbl_event_file complete')
    tbl_event_complete = true;
  });
  
}


// This function is used to render all event file records to the UI.
// NOTE: The event_file table should probably only be looped through once when the table is actually updated.
// NOTE: Not each time the other objects (event, location, session, presentation, presenter) are updated.
exports.render_event_file_records = function (event_files, event_id) {
  console.log('Rendering event file records...');
  /*
  tbl_event_file.iterate(function(value, key, iteration) {
    if (value.id == event_id) {
      console.log('This event file ('+value.id+') is part of the this event ('+event_id+').');
      document.getElementById('event_name').innerHTML = '@'+value.name;
    } else {
      console.log('This event file ('+value.id+') is NOT part of the this event ('+event_id+').');
    }
  }).then(function() {
    console.log('idb_to_ui: Iterate tbl_event_file complete')
    tbl_event_complete = true;
  });
  
  
  document.getElementById('event_files_menu').innerHTML = '<h2>Event Files</h2>';
  document.getElementById('event_files_menu').innerHTML += '<ul class="list-group list-group-flush">';
  for (var i in launcher_tmp.event_file) {
    document.getElementById('event_files_menu').innerHTML += '<li id="menu_event_file_'+launcher_tmp.event_file[i].event_file_id+'" class="list-group-item btn btn-secondary d-flex justify-content-between align-items-center open_local_file" data-hash_sha256="'+launcher_tmp.event_file[i].hash_sha256+'.file" data-filename="'+launcher_tmp.event_file[i].event_file_filename+'">'+launcher_tmp.event_file[i].event_file_filename+'</li>';
  }
  document.getElementById('event_files_menu').innerHTML += '</ul>';
  
  */
  
}


exports.render_event_location_records = async function () {
  console.log('Rendering event location records...');
  
  await tbl_event_location.iterate(function(value, key, iteration) {
    if (value.id == event_location_id) {
      console.log('*** Event location id ('+event_location_id+') found in table.');
      document.getElementById('location_name').innerHTML = '<span class="fas fa-map-marker"></span> '+value.name;
    } else {
      console.log('Event location not it.');
    }
  }).then(function() {
    console.log('idb_to_ui: Iterate tbl_event_file complete')
    tbl_event_location_complete = true;
  });
  
}


exports.render_event_location_file_records = function (events) {
  console.log('Rendering event location file records...');
}


exports.render_event_session_records = async function () {
  console.log('Rendering event session records...');
  
  // First: update or add sessions
  tbl_event_session.iterate(function(value, key, iteration) {
    if (value.event_id == event_id && value.event_location_id == event_location_id) {
      console.log('*** Event session id ('+value.id+') is part of this event location.');
      
      // *** ** * Checking if the session is already in the launcher menu * ** ***
      if (document.getElementById('menu_event_session_'+value.id)) {
        // Update the session menu list item
        document.getElementById('menu_event_session_'+value.id).innerHTML = value.name;
      } else {
        // Unhide the sessions menu
        if (document.getElementById('sessions_menu').classList.contains('d-none') ) {
          document.getElementById('sessions_menu').classList.remove('d-none');
          document.getElementById('sessions_menu').classList.add('d-block');
        }
        
        // Add the new session to the session menu
        let node = document.createElement('LI');
        node.id = 'menu_event_session_'+value.id;
        node.className = 'list-group-item btn btn-info d-flex justify-content-between align-items-center btn_view_session';
        node.setAttribute('data-session_id', value.id);
        let text_node = document.createTextNode(value.name);
        node.appendChild(text_node);
        
        document.getElementById('sessions_menu').getElementsByTagName('ul')[0].appendChild(node);
      }
      
      let session_startdatetime = new Date(value.start_datetime);
      
      // *** ** * Checking if the session is already in the launcher sessions detail * ** ***
      if (document.getElementById('detail_session_'+value.id)) {
        // Update the launcher sessions list
        // NOTE: Updating this text is very awkward?
        document.getElementById('detail_session_'+value.id).getElementsByTagName('h2')[0].firstChild.data = value.name;
        console.log(document.getElementById('detail_session_'+value.id).getElementsByTagName('h2')[0]);
        document.getElementById('detail_session_'+value.id).getElementsByTagName('h2')[0].getElementsByTagName('span')[0].innerHTML = dateFns.format(session_startdatetime, 'ddd h:mm A');
      } else {
        // Add the new session to the launcher sessions list
        let div_node = document.createElement('DIV');
        div_node.id = 'detail_session_'+value.id;
        div_node.className = 'container d-none session_detail event_session';
        div_node.setAttribute('data-session_id', value.id);
        
        let h2_node = document.createElement('H2');
        h2_node.className = 'session_title d-flex justify-content-between align-items-center';
        
        // NOTE: Instead of a text node should this just be wrapped in a set of tags?
        // Updating this is kind of awkward... see above
        let h2_text_node = document.createTextNode(value.name);
        h2_node.appendChild(h2_text_node);
        
        let h2_span_node = document.createElement('SPAN');
        h2_span_node.className = 'badge badge-pill badge-info';
        
        let h2_span_text_node = document.createTextNode(dateFns.format(session_startdatetime, 'ddd h:mm A'));
        h2_span_node.appendChild(h2_span_text_node);
        
        h2_node.appendChild(h2_span_node);
        
        div_node.appendChild(h2_node);
        
        // Add placeholder cards for session files and session presentations
        // Files
        let files_div_node = document.createElement('DIV');
        files_div_node.id = 'event_session_files_'+value.id;
        files_div_node.className = 'card session_files';
        
        let files_header_div_node = document.createElement('DIV');
        files_header_div_node.className = 'card-header';
        
        let files_header_text_node = document.createTextNode('Session Files:');
        files_header_div_node.appendChild(files_header_text_node);
        
        let files_body_div_node = document.createElement('DIV');
        files_body_div_node.className = 'card-body';
        
        let files_body_ul_node = document.createElement('UL');
        files_body_ul_node.id = 'event_session_files_list_'+value.id;
        files_body_ul_node.className = 'list-group list-group-flush session_files_list event_files_list';
        
        files_body_div_node.appendChild(files_body_ul_node);
        
        files_div_node.appendChild(files_header_div_node);
        files_div_node.appendChild(files_body_div_node);
        
        div_node.appendChild(files_div_node);
        
        // Presentations
        let presentations_div_node = document.createElement('DIV');
        presentations_div_node.id = 'session_presentations_'+value.id;
        presentations_div_node.className = 'card session_presentations';
        
        let presentations_header_div_node = document.createElement('DIV');
        presentations_header_div_node.className = 'card-header';
        
        let presentations_header_text_node = document.createTextNode('Presentations:');
        presentations_header_div_node.appendChild(presentations_header_text_node);
        
        let presentations_body_div_node = document.createElement('DIV');
        presentations_body_div_node.className = 'card-body';
        
        let presentations_body_ul_node = document.createElement('UL');
        presentations_body_ul_node.id = 'session_presentations_list_'+value.id;
        presentations_body_ul_node.className = 'list-group list-group-flush session_presentations_list';
        presentations_body_ul_node.setAttribute('data-session_id', value.id);
        
        presentations_body_div_node.appendChild(presentations_body_ul_node);
        
        presentations_div_node.appendChild(presentations_header_div_node);
        presentations_div_node.appendChild(presentations_body_div_node);
        
        div_node.appendChild(presentations_div_node);
        
        
        document.getElementById('launcher_sessions').appendChild(div_node);
      }
      
    } else {
      //console.log('Event session not it.');
    }
  }).then(function() {
    console.log('idb_to_ui: Iterate tbl_event_session complete');
    tbl_event_session_complete = true;
  }).then(function() {
    // Second: remove sessions from the launcher sessions menu and sessions list
    // This is basing the removal of sessions only on the menu list of sessions.
    // In theory this should be safe as long as nothing gets out sync...
    console.log('Looking for removed sessions...');
    
    let session_list_items = document.getElementById('sessions_menu').getElementsByTagName('ul')[0].childNodes;
    //console.log(session_list_items);
    
    let session_list = document.getElementById('sessions_menu').getElementsByTagName('ul')[0].children;
    
    if (session_list_items.length) {
      for (let i=0, len=session_list_items.length; i < len; i++) {
        console.log('session_id='+session_list_items[i].getAttribute('data-session_id'));
        let session_id = session_list_items[i].getAttribute('data-session_id');
        let session_valid = false;
        
        tbl_event_session.iterate(function(value, key, iteration) {
          //console.log(value.event_id+' ?= '+event_id+' : '+value.event_location_id+' ?= '+event_location_id+' : '+value.id+' ?= '+session_id);
          if (value.event_id == event_id && value.event_location_id == event_location_id && value.id == session_id) {
            // The session is still part of the event and the location
            session_valid = true;
          } else {
            // The session is no longer part of the event and or the location
            //console.log('Need to remove session id '+session_id);
          }
        }).then(function() {
          console.log('idb_to_ui: Iterate tbl_event_session looking for sessions to remove is complete')
          if (session_valid) {
            //console.log('Keep session id '+session_id);
          } else {
            console.log('Remove session id '+session_id);
            document.getElementById('menu_event_session_'+session_id).remove(); // Remove the node from the launcher sessions menu list
            document.getElementById('detail_session_'+session_id).remove(); // Remove the node from the launcher sessions list
          }
        });
      }
    }
  });
  
  // Third: re-index view session buttons
  // NOTE: Should this go in a .then() section?
  // NOTE: It might make even more sense to only have this done individually per add. Should also do a remove to keep things clean.
  //index_launcher_sessions('btn_view_session');
  index_launcher_sessions('btn_view_session');
  
}


exports.render_event_session_file_records = function (events) {
  console.log('Rendering event session file records...');
}


exports.render_event_presentation_records = async function (events) {
  console.log('********** ********* ****** ** * ** ****** ********* *********');
  console.log('Rendering event presentation records...');
  
  let launcher_sessions = document.getElementById('launcher_sessions').childNodes; //_list_items
  console.log(launcher_sessions);
  
  for (let i=0, len=launcher_sessions.length; i < len; i++) {
  //for (let i in launcher_sessions) {
    console.log('Current launcher session_id='+launcher_sessions[i].getAttribute('data-session_id'));
    let session_id = launcher_sessions[i].getAttribute('data-session_id');
    
    let presentations_list = launcher_sessions[i].getElementsByClassName('session_presentations')[0].getElementsByTagName('ul')[0].childNodes;
    console.log(presentations_list);
    
    // First: update or delete presentations
    if (presentations_list.length) {
      console.log('Presentations listed under this session (id='+session_id+'). (launcher sessions loop i = '+i+')');
      console.log(launcher_sessions[i].getElementsByClassName('session_presentations')[0].getElementsByTagName('ul'));
      
      for (let j=0, len=presentations_list.length; j < len; j++) {
        console.log('Current launcher presentation_id='+presentations_list[j].getAttribute('data-presentation_id'));
        let presentation_id = presentations_list[j].getAttribute('data-presentation_id');
        
        await tbl_event_presentation.iterate(function(value, key, iteration) {
          //console.log('*** 1: session_id='+session_id+' | presentation.event_session_id='+value.event_session_id+' | presentation_id='+presentation_id+' | presentation.id='+value.id+' (launcher sessions loop i='+i+')');
          looping_tbl_event_presentation = true;
          if (session_id == value.event_session_id && presentation_id == value.id) {
            // Found presentation in that session. Updating...
            console.log('Presentation ('+presentation_id+') was found in the session ('+session_id+'). Updating...');
            document.getElementById('event_presentation_'+value.id).getElementsByTagName('div')[0].getElementsByTagName('strong')[0].innerHTML = value.name;
            let presentation_startdatetime = new Date(value.start_datetime);
            document.getElementById('event_presentation_'+value.id).getElementsByTagName('div')[0].getElementsByTagName('span')[0].innerHTML = dateFns.format(presentation_startdatetime, 'h:mm A');
            
          } else if (session_id != value.event_session_id && presentation_id == value.id) {
            // Found presentation in a session that it should not be in. Removing...
            console.log('Presentation exists but should not be part of this session. Removing...');
            console.log('*** Presentation id ('+value.id+') is NOT part of this session ('+session_id+'). (launcher sessions loop i='+i+')');
            document.getElementById('event_presentation_'+presentation_id).remove(); // Remove the node from the launcher presentations list
            
          } else {
            //console.log('Not doing anything');
          }
          
        }).then(function() {
          console.log('idb_to_ui: Iterate tbl_event_presentation looking for presentations to update or remove is complete');
          looping_tbl_event_presentation = false;
        });
      }
      
      
    } else { // Close for if presentations_list.length
      
    } // Close for if presentations_list.length
    
    
    // Now that the updates and removals have been done we need to add presentations.
    await tbl_event_presentation.iterate(function(value, key, iteration) {
      //console.log('*** 2: session_id='+session_id+' | presentation.event_session_id='+value.event_session_id+' | presentation.id='+value.id+' (launcher sessions loop i='+i+')');
      looping_tbl_event_presentation = true;
      
      let add_presentation = true;
      
      if (session_id == value.event_session_id) {
        // This presentation should be part of the session. Adding if not there...
        
        presentations_list = launcher_sessions[i].getElementsByClassName('session_presentations')[0].getElementsByTagName('ul')[0].childNodes;
        console.log(presentations_list);
        
        if (presentations_list.length) {
          // One more presentations are already in this session.
          // Need to check if this one needs to be added.
          for (let j=0, len=presentations_list.length; j < len; j++) {
            let presentation_id = presentations_list[j].getAttribute('data-presentation_id');
            if (presentation_id == value.id) {
              // Nothing here so it for sure needs to be added.
              add_presentation = false;
            } else {
              // Don't reset the add_presentation back to true
            }
          }
        } else {
          // Nothing here, so it for sure needs to be added.
          //add_presentation = true;
        }
      } else {
        add_presentation = false;
      }
      
      
      if (add_presentation) {
        // Presentation not found. Adding...
        console.log('Presentation was not found in the session but should be. Adding...');
        console.log('Presentation id ('+value.id+') is part of this session ('+session_id+'). (launcher sessions loop i='+i+')');
        
        // Add the new presentation to the launcher presentation list
        let presentation_li_node = document.createElement('LI');
        presentation_li_node.id = 'event_presentation_'+value.id;
        presentation_li_node.className = 'list-group-item event_presentation';
        presentation_li_node.setAttribute('data-session_id', value.event_session_id);
        presentation_li_node.setAttribute('data-presentation_id', value.id);
        
        let presentation_li_heading_div_node = document.createElement('DIV');
        presentation_li_heading_div_node.className = 'list-group-item-heading d-flex justify-content-between align-items-center';
        
          let presentation_name_strong_node = document.createElement('STRONG');
          
          let presentation_name_text_node= document.createTextNode(value.name);
          presentation_name_strong_node.appendChild(presentation_name_text_node);
          
          let presentation_heading_span_node = document.createElement('SPAN');
          presentation_heading_span_node.className = 'badge badge-pill badge-info';
          
          let presentation_startdatetime = new Date(value.start_datetime);
          let presentation_heading_span_text_node = document.createTextNode(dateFns.format(presentation_startdatetime, 'h:mm A'));
          presentation_heading_span_node.appendChild(presentation_heading_span_text_node);
        
        presentation_li_heading_div_node.appendChild(presentation_name_strong_node);
        presentation_li_heading_div_node.appendChild(presentation_heading_span_node);
        
        
        let presentation_li_text_div_node = document.createElement('DIV');
        //presentation_li_text_div_node.id = 'event_presentation_files_'+value.id;
        presentation_li_text_div_node.className = 'list-group-item-text';
        
        let presentation_files_ul_group_node = document.createElement('UL');
        presentation_files_ul_group_node.id = 'event_presentation_files_list_'+value.id;
        presentation_files_ul_group_node.className = 'list-group list-group-flush presentation_files presentation_files_list event_files_list';
        
        let presentation_presenters_ul_group_node = document.createElement('UL');
        presentation_presenters_ul_group_node.id = 'event_presentation_presenters_'+value.id;
        presentation_presenters_ul_group_node.className = 'list-group list-group-flush presentation_presenters presentation_presenters_list';
        presentation_presenters_ul_group_node.setAttribute('data-session_id', value.event_session_id);
        presentation_presenters_ul_group_node.setAttribute('data-presentation_id', value.id);
        
        presentation_li_text_div_node.appendChild(presentation_files_ul_group_node);
        presentation_li_text_div_node.appendChild(presentation_presenters_ul_group_node);
        
        
        presentation_li_node.appendChild(presentation_li_heading_div_node);
        presentation_li_node.appendChild(presentation_li_text_div_node);
        
        
        //console.log(launcher_sessions[i].getElementsByClassName('session_presentations'));
        let launcher_session_details = document.getElementById('detail_session_'+session_id);
        //console.log(launcher_session_details.getElementsByClassName('session_presentations'));
        
        // Trying to remove old ID in case there is one already rendered
        try {
          document.getElementById('event_presentation_'+value.id).remove();
        }
        catch(err) {
          console.log('A node with the ID of event_presentation_'+value.id+' was not found.');
          console.log(err.message);
        }
        
        let session = document.getElementById('detail_session_'+session_id).getElementsByClassName('session_presentations')[0].getElementsByTagName('ul')[0].appendChild(presentation_li_node);
        presentation_id_found = true;
      } else {
        // Presentation not part of this session. Moving on...
        //console.log('Presentation was not found in the session and should not be. Moving on...');
        //console.log('*** Presentation id ('+value.id+') is not part of this session ('+session_id+'). (launcher sessions loop i='+i+')');
      }
      
    }).then(function() {
      console.log('idb_to_ui: Iterate tbl_event_presentation looking for presentations to add is complete');
      looping_tbl_event_presentation = false;
    });
    
    
  }
  
  return true;
}


exports.render_event_presention_file_records = function (events) {
  console.log('Rendering event presentation file records...');
}


exports.render_event_presenter_records = async function (events) {
  console.log('Rendering event presenter records...');
  console.log('****************** Presenters ******************');
  
  if (looping_tbl_event_presenter) {
    console.log('Already looping through the tbl_event_presenter table. Not starting until finished.');
    return false;
  } else {
    
  }
  
  looping_tbl_event_presenter = true;
  
  let presentations_presenters_lists = document.getElementsByClassName('presentation_presenters'); // from the UL nodes for presenters
  console.log(presentations_presenters_lists);
  
  // First: Loop through the presenters table looking for presenters for each presentation list
  await tbl_event_presenter.iterate(function(value, key, iteration) {
    let tbl_presentation_id = value.event_presentation_id;
    let tbl_presenter_id = value.id;
    console.log('presenter tbl iteration='+iteration+' | tbl_presenter_id='+tbl_presenter_id+' for tbl_presentation_id='+tbl_presentation_id);
    
    if (presentations_presenters_lists.length) {
      for (var i = 0; i < presentations_presenters_lists.length; i++) {
        let ul_session_id = presentations_presenters_lists[i].getAttribute('data-session_id');
        let ul_presentation_id = presentations_presenters_lists[i].getAttribute('data-presentation_id');
        console.log('i='+i+' | ul_presentation_id='+ul_presentation_id);
        
        // Check if this presenter is part of this presentation
        let add_presenter_id = true; // Set flag to true. Update if found. Add if not found.
        let remove_presenter_id = true;
        if (tbl_presentation_id == ul_presentation_id) {
          console.log('This tbl_presentation_id '+tbl_presentation_id+' matches this ul_presentation_id '+ul_presentation_id+'. Trying to loop through list of presenters to see if it needs to be updated or added...');
          // Get a list of list items under the UL presenters node for a presentation
          let presentation_presenters_list_items = presentations_presenters_lists[i].children;
          
          if (presentation_presenters_list_items.length) {
            for (let j=0, len=presentation_presenters_list_items.length; j < len; j++) {
              console.log('li_presenter_id='+presentation_presenters_list_items[j].getAttribute('data-presenter_id'));
              let li_presentation_id = presentation_presenters_list_items[j].getAttribute('data-presentation_id');
              let li_presenter_id = presentation_presenters_list_items[j].getAttribute('data-presenter_id');
              
              if ( tbl_presentation_id == li_presentation_id && tbl_presenter_id == li_presenter_id ) {
                console.log('Updating presenter ID '+li_presenter_id);
                // Update the presenter information
                document.getElementById('event_presenter_'+tbl_presenter_id).getElementsByClassName('presenter_name')[0].innerHTML = value.given_name+' '+value.family_name;
                // Could have used getElementsByTagName('strong') instead
                add_presenter_id = false;
                remove_presenter_id = false;
              } else if (tbl_presentation_id != li_presentation_id ) {
                console.log('Set flag to remove presenter ID '+li_presenter_id);
                remove_presenter_id = true;
              } else {
                // Remove presenter here?????
                // NOTE: This section is not finished!!!
              }
            }
            
            
          } else {
            // No need to remove anything if the list is empty.
            console.log('Ignoring this presentation\'s list ('+ul_presentation_id+') of presenters because it is empty. Adding this presenter ('+tbl_presenter_id+') to the list...');
            add_presenter_id = true; // Technically this line is not needed since the value was initialized to true.
            remove_presenter_id = false;
          }
          
          
          
        } else {
          // Remove presenter here?????
          // NOTE: This section is not finished!!!
          add_presenter_id = false;
          //remove_presenter_id = true;
        }
        
        
        // The presenter ID was not found. Need to add.
        if ( add_presenter_id ) {
          console.log('Adding this presenter ('+tbl_presenter_id+') to the list of presenters for this presentation ('+ul_presentation_id+').');
          let presenter_li_node = document.createElement('LI');
          presenter_li_node.id = 'event_presenter_'+tbl_presenter_id;
          presenter_li_node.className = 'list-group-item event_presenter';
          presenter_li_node.setAttribute('data-session_id', value.event_session_id);
          presenter_li_node.setAttribute('data-presentation_id', ul_presentation_id);
          presenter_li_node.setAttribute('data-presenter_id', tbl_presenter_id);
          
          let presenter_name_strong_node = document.createElement('STRONG');
          presenter_name_strong_node.className = 'list-group-item-heading presenter_name';
            
          let presenter_name_text_node= document.createTextNode(value.given_name+' '+value.family_name);
          presenter_name_strong_node.appendChild(presenter_name_text_node);
          
          presenter_li_node.appendChild(presenter_name_strong_node);
          
          
          let presentation_presenters_ul_group_node = document.createElement('UL');
          presentation_presenters_ul_group_node.id = 'event_presentation_presenter_files_'+tbl_presenter_id;
          presentation_presenters_ul_group_node.className = 'list-group list-group-flush list-group-item-text presenter_files presenter_files_list event_files_list';
          presentation_presenters_ul_group_node.setAttribute('data-presenter_id', tbl_presenter_id);
          
          presenter_li_node.appendChild(presentation_presenters_ul_group_node);
          
          console.log('BEFORE appendChild:');
          console.log(document.getElementById('event_presentation_presenters_'+tbl_presentation_id));
          document.getElementById('event_presentation_presenters_'+tbl_presentation_id).appendChild(presenter_li_node);
          console.log('AFTER appendChild:');
          console.log(document.getElementById('event_presentation_presenters_'+tbl_presentation_id));
          //document.getElementById('event_presentation_presenters_'+tbl_presentation_id).innerHTML = 'WTF';
          //document.getElementById('event_presentation_presenters_'+tbl_presentation_id).appendChild(presentation_presenters_ul_group_node);
          
          remove_presenter_id = false;
        } else {
          //console.log('Not going to add this presenter ('+tbl_presenter_id+') to the list of presenters for this presentation ('+ul_presentation_id+').');
        }
        
        
        // The presenter ID was found, but not part of this presentation. Need to remove.
        if ( remove_presenter_id ) {
          if ( ul_presentation_id != tbl_presentation_id ) {
            console.log('Removing this presenter ('+tbl_presenter_id+') from the list of presenters for this presentation ('+ul_presentation_id+').');
            
            // Trying to remove old ID in case there is one already rendered
            try {
              presentations_presenters_lists[i].remove();
              //document.getElementById('event_presentation_'+tbl_presenter_id).getElementById('event_presenter_'+tbl_presenter_id).remove();
            }
            catch(err) {
              //console.log('A node with the ID of event_presenter_'+tbl_presenter_id+' was not found.');
              console.log('This presenter list item node was not found.');
              console.log(err.message);
            }
          }
          
        } else {
          console.log('This presenter ('+tbl_presenter_id+') is already part of the list of presenters for this presentation ('+ul_presentation_id+') and is correct.');
        }
        
      }
    } else {
      console.log('No list of presenters found under any presentations');
    }
  }).then(function() {
    console.log('idb_to_ui: Iterate tbl_event_presenter looking for presenters to update, add, or remove is complete');
    looping_tbl_event_presenter = false;
  });
  
  return true;
}


exports.render_event_presenter_file_records = function (events) {
  console.log('Rendering event presenter file records...');
}




/* Updated 2020-01-31 */
function index_launcher_sessions(class_name) {
  console.log('Indexing launcher sessions with class name: '+class_name);
  var class_elements = document.getElementsByClassName(class_name);
  
  
  for (var i = 0; i < class_elements.length; i++) {
    class_elements[i].addEventListener( 'click', function() {view_session( this.getAttribute('data-session_id')) } );
  }
  console.log(class_elements);
  return true;
}


/* Updated 2020-01-31 */
function view_session(session_id) {
  var class_elements = document.getElementsByClassName('session_detail'); // This class name should be the class names for each div container
  console.log('View session ID: '+session_id);
  for (var i = 0; i < class_elements.length; i++) {
    //console.log('*** checking: '+class_elements[i].getAttribute('data-session_id'));
    if (class_elements[i].getAttribute('data-session_id') == session_id) {
      //console.log('show');
      class_elements[i].classList.remove('d-none');
      class_elements[i].classList.add('d-block');
    } else {
      //console.log('hide');
      class_elements[i].classList.remove('d-block');
      class_elements[i].classList.add('d-none');
    }
  }
  
  return true;
}


function format_bytes(bytes, decimals = 2) {
    if (bytes === 0) return '0 Bytes';

    const k = 1024;
    const dm = decimals < 0 ? 0 : decimals;
    const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];

    const i = Math.floor(Math.log(bytes) / Math.log(k));

    return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];
}