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<?php
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/**
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* Author: Bernard Szlachta
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* Company: NobleProg Limited
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* URL: www.nobleprog.co.uk
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* bernard.szlachta (at) NobleProg.co.uk
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*/
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//TODO
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/**
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* 1. Secure double invoice generation
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*
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*/
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/**
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* The hook_menu implementation
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*/
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function invoice_pf_menu($may_cache){
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if(! $may_cache){
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$items[] = array(
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'path' => 'node/' . arg(1) . '/gen_invoice' ,
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'title' => t('Generate invoice from pro forma'),
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'description' => t('Generate invoice from pro forma'),
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'position' => 'right',
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'weight' => -8,
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'callback' => 'invoice_pf_gen_invoice',
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'callback arguments' => array(arg(1)),
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'access' => user_access('generate invoice from pro forma'),
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'type' => MENU_CALLBACK,
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);
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}
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return $items;
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}
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/**
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* The hook_link_alter implementation
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*/
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function invoice_pf_link_alter($node, & $links) {
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global $user;
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//We don't want to see any links when printing
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if ($node->type == 'invoice' and
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user_access('generate invoice from pro forma') and
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! is_numeric($node->field_pro_forma_ref[0]['nid'])
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) {
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if ($user->uid && ($node->field_pro_forma[0]['value'] == 'yes') and
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user_access('create invoice content')) { // value 'yes' - after optionwidgets patch
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$links['gen_invoice_from_pf']['title'] = 'Generate invoice from pro-forma';
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$links['gen_invoice_from_pf']['href'] = 'node/'.$node->nid.'/gen_invoice';
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}
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}
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}
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/**
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* The hook_perm implementation
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*/
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function invoice_pf_perm(){
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return array('generate invoice from pro forma');
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}
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/**
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* This function generates invoice from pro forma
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*/
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function invoice_pf_gen_invoice($nid){
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$node = node_load($nid);
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if ($node->type == 'invoice' && $node->field_pro_forma[0]['value'] == 'yes'){
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$new_node = clone $node;
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unset( $new_node->nid,
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$new_node->vid,
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$new_node->title,
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$new_node->created,
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$new_node->changed
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);
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$new_node->field_pro_forma[0]['value'] = 'no';
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$inv_no = variable_get('invoice_next_id', invoices_get_last_id_from_db() + 1);
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$new_node->title = "Invoice Number " . $inv_no ;
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$new_node->field_invoice_number[0]['value'] = $inv_no;
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$new_node->field_issue_date[0]['value'] = substr(date('c'),0,-6);
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$new_node->field_pro_forma_ref[0]['nid'] = $node->nid;
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node_save($new_node);
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if ($new_node->nid) {
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variable_set('invoice_next_id',++$inv_no);
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$link = l($new_node->title,"node/$new_node->nid");
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drupal_set_message("Invoice has been genereated.($link)");
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invoice_pf_copy_items($node->nid, $new_node->nid);
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}
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}
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return '';
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}
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/**
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* Copy items from invoice pro forma to newly genereated invoice
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*/
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function invoice_pf_copy_items($old_invoice_nid, $new_invoice_nid){
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$items = invoice_pf_get_items($old_invoice_nid);
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foreach($items as $item_nid){
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$node = node_load($item_nid);
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unset( $node->nid,
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$node->vid,
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$node->created,
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$node->changed
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);
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$node->field_parent_invoice[0]['nid'] = $new_invoice_nid;
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node_save($node);
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}
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}
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/**
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* Retrivies items of an invoice
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* @param parent_invoice parent invoice nid
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* @return array invoice items
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*/
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function invoice_pf_get_items($parent_invoice){
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$result = db_query("SELECT nid FROM {content_type_invoice_item} WHERE field_parent_invoice_nid = $parent_invoice");
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while($row = db_fetch_array($result)){
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$items[] = $row['nid'];
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}
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return $items;
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}
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