<?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)
	{	
		$cck_fieldname = node_import_cck_name($fieldname, $colname);
		
		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)
	{	
		$cck_fieldname = node_import_cck_name($fieldname, $colname);
		
		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']);
			
			// 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 '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);
            $values[$fieldname][$i][$colname]['time']	= date($timeFormat, $time);
		}
	}
}

function date_node_import_values_alter_date_select(&$values, $fields, $fieldname, $fieldinfo)
{
	foreach ($fieldinfo['columns'] as $colname => $colinfo)
	{	
		$cck_fieldname = node_import_cck_name($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);
		}
	}
}