<?php

/**
 * Implementation of hook_help().
 */
function terms_help($section) {
	switch ($section) {
		case 'admin/help#terms':
			return t('Adds a Terms & Conditions page to the checkout process');
			break;
		case 'admin/modules#description':
			return t('Adds a Terms & Conditions page to the checkout process');
			break;
	}
}

/**
 * Implementation of hook_menu().
 */
function terms_menu($may_cache) {
	$items = array();

	if ($may_cache) {	
	}
	else {
		$items[] = array(
			'path' => 'admin/store/settings/terms',
			'title' => t('Terms & Conditions'),
			'description' => t('Specify the Terms & Conditions that will be presented to a user during the checkout process.'),
			'callback' => 'terms_details',
			'access' => user_access('administer terms'),
			'type' => MENU_NORMAL_ITEM,
		);
	}
	return $items;
}

/**
 * Implementation of hook_perm().
 */
function terms_perm() {
	return array('administer terms');
}

/**
 * Build the settings page where the user can paste their Terms & Conditions,
 */

function terms_details(){
		$form = _terms();
		$output = drupal_get_form('terms', $form);
		return $output;
}
// Actual settings form.
function _terms(){
	// Check and see if we're requiring terms, to set default value for form.
	$set = variable_get('ec_terms_and_conditions', '');
	if (isset($set)) {
		$required = 'Y';
	}
	else {
		$required = 'N';
	}

	$form['terms']['switch'] = array(
		'#type' => 'select',
		'#title' => t('Present terms & conditions to user?'),
		'#options' => array('Y' => t('Yes'), 'N' => t('No')),
		'#default_value' => $required,
	);
	$form['terms']['text'] = array(
			'#type' => 'textarea',
			'#title' => t('Your terms'),
			'#description' => t('These will be displayed during the checkout process. HTML Accepted'),
			'#cols' => 60,
			'#rows' => 15,
			'#default_value' => variable_get('ec_terms_and_conditions', ''),
		);		
	$form['save'] = array(
			'#type' => 'submit', 
			'#value' => t('Save'),
		);
	
		return $form;
}

function terms_validate($form_id, $form_values) {
	if($form_values['switch'] == 'Y' && $form_values['text'] == ''){
		form_set_error('error', 'If you\'re going to require terms you should probably enter some...');
	}
}

function terms_submit($form_id, $form_values) {
	if($form_values['switch'] == 'Y'){
		variable_set('ec_terms_and_conditions', $form_values['text']);
		drupal_set_message('Terms will be required during checkout');
	}	
	if($form_values['switch'] == 'N') {
		variable_del('ec_terms_and_conditions');
		drupal_set_message('Terms will not be required during checkout');
	}
}

/**
 * 
 */ 
function terms_checkoutapi(&$txn, $op, $arg3 = NULL, $arg4 = NULL){
  $output = '';
  switch ($op) {
    case 'form':
			$require_terms = variable_get('ec_terms_and_conditions', '');
			if($require_terms !== ''){
				$terms = filter_xss($require_terms, $allowed_tags = array('a', 'em', 'strong', 'ul', 'ol', 'li', 'dl', 'dt', 'dd', 'div'));
				$form = _present_termsandconditions($terms);
				return $form;
			}
			break;

    case 'validate':
			
			if($txn->agree == '0') {
				form_set_error('error', 'Check the box below to accept these terms and conditions.');
			}
      break;

    case 'save':
      $txn->screen++;
      break;

    case 'review':
      break;

    case 'review_validate':
      break;

    case 'review_save':
      break;
  }
}

function _present_termsandconditions($terms){
	
	$form['terms'] = array(
		'#type' => 'markup',
		'#value' => $terms,
	);
	$form['agree'] = array(
		'#type' => 'checkbox',
		'#title' => t('I agree to these terms'),
	);
	$form['continue'] = array(
		'#type' => 'submit',
		'#value' => t('Continue'),
	);
	
	return $form;
}

?>