<?php

/**
 * @file
 * Support file for the CCK Date module.
 */

/**
 * Implementation of hook_node_import_fields().
 */
function date_node_import_fields($type)
{
  $fields = array();

  foreach (node_import_cck_fields($type, 'date') as $fieldname => $fieldinfo)
  {
    foreach ($fieldinfo['columns'] as $colname => $colinfo)
    {
      $cck_fieldname      = node_import_cck_name($fieldname, $colname);
      $fields[$cck_fieldname]  = node_import_cck_field_defaults($fieldinfo);

      switch ($colname)
      {
        case 'value':
          $fields[$cck_fieldname]['title'] = $fieldinfo['widget']['label'];
          $fields[$cck_fieldname]['input_format'] = 'date';
          $fields[$cck_fieldname]['date_format'] = $fieldinfo['widget']['type'] == 'date_select' ? DATE_ARRAY : DATE_ISO;
          $fields[$cck_fieldname]['output_format'] = DATE_ISO;
          $fields[$cck_fieldname]['map_required'] = $fieldinfo['required'];
          break;

        case 'value2':
          $fields[$cck_fieldname]['title'] = $fieldinfo['widget']['label'] .' - '. t('To date');
          $fields[$cck_fieldname]['input_format'] = 'date';
          $fields[$cck_fieldname]['date_format'] = $fieldinfo['widget']['type'] == 'date_select' ? DATE_ARRAY : DATE_ISO;
          $fields[$cck_fieldname]['output_format'] = DATE_ISO;
          $fields[$cck_fieldname]['map_required'] = $fieldinfo['required'] && ($fieldinfo['todate'] == 'required');
          break;

        default:
          $fields[$cck_fieldname]['title'] = t('Unsupported: ') . $fieldinfo['widget']['label'] .' - '. $colname;
          break;
      }
    }
  }

  return $fields;
}

/**
 * Implementation of hook_node_import_values_alter().
 */
function date_node_import_values_alter(&$values, $type, $defaults, $options, $fields, $preview)
{
  foreach (node_import_cck_fields($type, 'date') as $fieldname => $fieldinfo)
  {  
    switch ($fieldinfo['widget']['type'])
    {
      // Select List
      default:
      case 'date_select':
        date_node_import_values_alter_date_select($values, $fields, $fieldname, $fieldinfo);
        break;
      
      // Text Field with custom input format
      case 'date_text':
        date_node_import_values_alter_date_text($values, $fields, $fieldname, $fieldinfo);
        break;
        
      // Text Field with Date Pop-up calendar
      case 'date_popup':
        date_node_import_values_alter_date_popup($values, $fields, $fieldname, $fieldinfo);
        break;
        
    }
  }
}

function date_node_import_values_alter_date_text(&$values, $fields, $fieldname, $fieldinfo)
{
  foreach ($fieldinfo['columns'] as $colname => $colinfo)
  {  
    // Provide default value if the field has no values.
    if (count($values[$fieldname]) == 0)
    {
      $values[$fieldname] = array();
      $values[$fieldname][0] = array();
      $values[$fieldname][0][$colname]  =
        array
        (
          'date'    => null
        );
    }
        
    else
    {
      foreach ($values[$fieldname] as $i => $value)
      {
        // Get the format that is expected from the pop-up calendar.
        $widgetFormat    = $fieldinfo['widget']['input_format'];
        
        // Remove parts that are not valid for the selected granularity
        $widgetFormat    = date_limit_format($widgetFormat, $fieldinfo['granularity']);
  
        // Get the original value format we need to convert
        $time        = strtotime($value[$colname]);
        
        /* $colname is 'value' in most cases.
         * We trash the original 'value' field and replace it with an array containing the various pieces entered
         * from the 'pop-up calendar'.
         */
        $values[$fieldname][$i][$colname]      = array();
        $values[$fieldname][$i][$colname]['date']  = date($widgetFormat, $time);
      }
    }
  }
}

function date_node_import_values_alter_date_popup(&$values, $fields, $fieldname, $fieldinfo)
{
  foreach ($fieldinfo['columns'] as $colname => $colinfo)
  {  
    // Provide default value if the field has no values.
    if (count($values[$fieldname]) == 0)
    {
      $values[$fieldname]          = array();
      $values[$fieldname][0]        = array();
      $values[$fieldname][0][$colname]  =
        array
        (
          'date'    => null,
          'time'    => null
        );
    }
    
    else
    {
      foreach ($values[$fieldname] as $i => $value)
      {
        //Timezone is handled separately - just wrap in an array('timezone' => $timezone)
        if ($colname == 'timezone') {
          $values[$fieldname][$i]['timezone'] = array('timezone' => $values[$fieldname][$i]['timezone']);
          continue;
        }
        // Get the format that is expected from the pop-up calendar.
        $widgetFormat    = $fieldinfo['widget']['input_format'];
        
        // Remove parts that are not valid for the selected granularity
        $widgetFormat    = date_limit_format($widgetFormat, $fieldinfo['granularity']);
        
        // Separate the widget format into a date part and a time part
        $widgetFormatPieces  = explode(' - ', $widgetFormat, 2);
        $dateFormat      = $widgetFormatPieces[0];
        $timeFormat      = $widgetFormatPieces[1];
  
        // Get the original value format we need to convert
        $time        = strtotime($value[$colname]);
        
        /* $colname is equal to 'value' in most cases.
         * We trash the original 'value' field and replace it with an array containing the various pieces
         * entered from the 'pop-up calendar'.
         */
        $values[$fieldname][$i][$colname]      = array();
        $values[$fieldname][$i][$colname]['date']  = date($dateFormat, $time);
        
        // AM/PM are case sensitive...
        $values[$fieldname][$i][$colname]['time']  = strtoupper(date($timeFormat, $time));
      }
    }
  }
}

function date_node_import_values_alter_date_select(&$values, $fields, $fieldname, $fieldinfo)
{
  foreach ($fieldinfo['columns'] as $colname => $colinfo)
  {  
    // Provide default value if the field has no values.
    if (count($values[$fieldname]) == 0)
    {
      $values[$fieldname]          = array();
      $values[$fieldname][0]        = array();
      $values[$fieldname][0][$colname]  =
        array
        (
          'year'    => null,
          'hour'    => 0,
          'minute'  => 0,
          'second'  => 0,
          'month'    => null,
          'day'    => null
        );
    }
    
    else
    {
      $cck_fieldname = node_import_cck_name($fieldname, $colname);
    
      foreach ($values[$fieldname] as $i => $value)
      {
        // TODO: Take into account granularity!
        $values[$fieldname][$i][$colname]      = date_convert(
                                  $value[$colname],
                                  $fields[$cck_fieldname]['output_format'],
                                  $fields[$cck_fieldname]['date_format']);
    
        // Strangely, hours don't appear to be padded the same way for 12-hour...
//        $values[$fieldname][$i][$colname]['hour']  = str_pad(
//                                  $values[$fieldname][$i][$colname]['hour'],
//                                  2,
//                                  "0",
//                                  STR_PAD_LEFT);
    
        $values[$fieldname][$i][$colname]['minute']  = str_pad(
                                  $values[$fieldname][$i][$colname]['minute'],
                                  2,
                                  "0",
                                  STR_PAD_LEFT);
                                  
        $values[$fieldname][$i][$colname]['second']  = str_pad(
                                  $values[$fieldname][$i][$colname]['second'],
                                  2,
                                  "0",
                                  STR_PAD_LEFT);
      }
    }
  }
}