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<?php
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/*
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* @todo: store the promo code against the newly created node
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*/
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function nodepromocode_form_alter($form_id, &$form) {
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switch($form_id) {
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case 'taxonomy_form_term':
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// Mark Taxonomy Form Menus Which are related to price calculation
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/*$vocabs = variable_get('paypalnode_vocabularies', array());
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$attribs['class'] = 'paypernode';
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foreach($vocabs as $vocab_id) {
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*/
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$form['name']['#weight'] = -10;
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// Add promo code fieldset
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$values = nodepromocode_term_promo_code($form['tid']['#value']);
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$form = array_merge($form, nodepromocode_taxonomy_form($values));
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break;
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case variable_get('paypalnode_content_type', PAYPALNODE_CHARGE_TYPE) . '_node_form':
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$form['promocode'] = array(
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'#type' => 'textfield',
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'#title' => t('Promo code'),
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'#description' => t('If you have a promotional code, enter it here to receive a discount'),
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'#size' => 10,
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'#maxlength' => 10,
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);
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drupal_add_js("$('#edit-promocode').blur(function() { paypalnode_pricecalc(); });", 'inline', 'footer');
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break;
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}
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}
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/*
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nodepromocode_taxonomy_form
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*/
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function nodepromocode_taxonomy_form($values) {
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$form['promocode'] = array(
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'#type' => 'fieldset',
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'#title' => t('Promotion Code'),
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'#description' => t('Enter an alphanumeric string for your promo code. It will be automatically converted to UPPERCASE upon submission. Use a percentage value to describe the amount of discount associated with the code. 100% = FREE'),
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'#weight' => 0,
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);
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$form['promocode']['code'] = array(
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'#type' => 'textfield',
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'#title' => t('Promo code'),
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'#size' => 10,
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'#maxlength' => 10,
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'#default_value' => isset($values['promocode']) ? $values['promocode'] : '',
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'#prefix' => '<div class="container-inline">',
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);
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$form['promocode']['discount'] = array(
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'#type' => 'textfield',
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'#size' => 4,
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'#maxlength' => 3,
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'#default_value' => isset($values['discount']) ? $values['discount'] : '100',
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'#weight' => 1,
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'#suffix' => '% </div>',
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);
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$form['#validate']['nodepromocode_taxonomy_validate'] = array();
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$form['#submit']['nodepromocode_taxonomy_submit'] = array();
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return $form;
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}
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function nodepromocode_taxonomy_validate($form_id, $form_values) {
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// promo codes can only have letters and numbers
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if($form_values['code'] != '' && !preg_match('/^[A-Za-z0-9]/', $form_values['code'])) {
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form_set_error('code', t('A promotion code can only contain letters and numbers.'));
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}
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// make sure the discount percentage is numeric and between 0 & 100
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if($form_values['discount'] != '' && !is_numeric($form_values['discount'])) {
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form_set_error('discount', t('The discount value must be a number.'));
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} elseif($form_values['discount'] < 0 || $form_values['discount'] > 100) {
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form_set_error('discount', t('The discount value must be between 0% and 100%'));
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}
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if($form_values['code'] && !$form_values['discount']) {
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form_set_error('discount', t('If you are setting a promo code you need to specify a discount percentage too.'));
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}
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if(nodepromocode_get_discount($form_values['code'])) {
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form_set_error('code', t('A promotion code with the name %name already exists. Codes must be unique.', array('%name' => $form_values['code'])));
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}
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}
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/*
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nodepromocode_taxonomy_submit
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*/
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function nodepromocode_taxonomy_submit($form_id, $form_values) {
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if($form_values['code'] != '') {
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// Force promo code to all uppercase for easier reading
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$form_values['code'] = strtoupper($form_values['code']);
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db_query("UPDATE {nodepromocode} SET promocode = '%s', discount = '%s' WHERE tid = %d", $form_values['code'], $form_values['discount'], $form_values['tid']);
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if(db_affected_rows() == 0) {
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db_query("INSERT INTO {nodepromocode} (tid, promocode, discount) VALUES (%d, '%s', '%s')", $form_values['tid'], $form_values['code'], $form_values['discount']);
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}
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}
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}
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/*
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* Returns the promo code and discount percentage based on a taxonomy term id
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*/
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function nodepromocode_term_promo_code($tid) {
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$result = db_query("SELECT * FROM {nodepromocode} WHERE tid = %d", $tid);
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return db_fetch_array($result);
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}
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/*
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nodepromocode_get_discount
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*/
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function nodepromocode_get_discount($code) {
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static $promocodes;
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if(!$promocodes[$code] && $result = db_query("SELECT * FROM {nodepromocode} WHERE promocode = '%s'", $code)) {
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$promocodes[$code] = db_fetch_array($result);
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}
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return $promocodes[$code];
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}
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/*
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nodepromocode_nodeprice
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*/
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function nodepromocode_nodeprice($price, $tids, $args) {
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if($args['code']) {
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$promocode = nodepromocode_get_discount($args['code']);
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/* make sure the code matches with any selected terms on the form
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* otherwise the promo code is not valid. */
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if(in_array($promocode['tid'], $tids)) {
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$price -= ($price / 100) * $promocode['discount'];
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}
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}
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return array('price' => $price);
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}
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/*
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* Stores a snapshot of the promocode used and the percentage discount at the time the node was published. Useful for audit trail reporting.
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* This also allows for a site admin to change the promocode and percentage at any time without messing up reports.
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*/
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function nodepromocode_nodeapi(&$node, $op, $a3 = NULL, $a4 = NULL) {
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if($node->type == variable_get('paypalnode_content_type', PAYPALNODE_CHARGE_TYPE)) {
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switch ($op) {
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case 'insert':
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$promo = nodepromocode_get_discount($node->promocode);
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db_query("INSERT INTO {nodepromocode_node} (nid, promocode, discount) VALUES (%d, '%s', %d)", $node->nid, strtoupper($node->promocode), $promo['discount']);
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break;
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case 'load':
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return db_fetch_array(db_query("SELECT promocode, discount FROM {nodepromocode_node} WHERE nid = %d", $node->nid));
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break;
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}
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}
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}
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