// The OnInit function is called by Directory Opus to initialize the script add-in
function OnInit(initData) {
  // Provide basic information about the script by initializing the properties of the ScriptInitData object
  initData.name = "Regex Columns with Groups";
  initData.desc = "Adds columns and displays values matched by regexp against filename.";
  initData.copyright = "2014 wowbagger";
  initData.min_version = "11.5.1"
  initData.version = "1.2";
  initData.default_enable = true;

// Create a new ScriptColumn object and initialize it to add the column to Opus
  for(var i = 0; i < config.columns.length; ++i) {
    var cmd = initData.AddColumn();
    cmd.name = config.columns[i].name;
    cmd.method = "OnCustomText";
    cmd.label = config.columns[i].name;
    cmd.autogroup = true;       
    cmd.autorefresh = true;     
    cmd.justify = "left";
  }
}

//Define columns here, includes title and regexp.
var config = {
  //Configuration for different patterns
  
  columns: [{
    //Name of column, Title.
    name:"area",
    //input values
    itemProperty: "name_stem",
    //regexp to extract value
    re: /^\d+/,
    // group to be returned (optional if whole match, i.e. group 0)
    // group: 0
  }, {
    name:"phone",
    itemProperty: "name_stem",
    re: /^\d+\D+(\d+[- ]\d+)/,
    group: 1
  }, {
    name:"who",
    itemProperty: "name_stem",
    re: /^\d+\D+\d+[- ]\d+\s*(\S+)/,
    group: 1
  }]
  
}

// Implement the OnCustomText column (this entry point is an OnScriptColumn event).
function OnCustomText(scriptColData) {
  // get column's config
  var config = GetConfig(scriptColData.col);
  if(!config) return;
  
  var result;
  if(!config.itemProperty)
  {
    // Get first regexp match on items default property.
    result = config.re.exec(scriptColData.item);
  }
  else
  {
    // Get first regexp match on items defined property .
    result = config.re.exec(scriptColData.item[config.itemProperty]);
  }
  
  if (result != null)
  {
    //display value
    var capturegroup = (typeof config.group === 'undefined') ? 0 : config.group; 
    scriptColData.value = result[capturegroup];
  }
}
 
function GetConfig(key)
{
  var match = null;
   
  for(var i = 0; i < config.columns.length; ++i) {
    if(config.columns[i].name == key) {
      match = config.columns[i];
      break;
    }
  }
 
 return match;
}