<?php
/*******************************************************************************
 * tripal_bulk_loader_init
 */
function tripal_bulk_loader_init(){
	// Add javascript and style sheet
	drupal_add_css(drupal_get_path('theme', 'tripal').'/css/tripal_bulk_loader.css');
	drupal_add_js(drupal_get_path('theme', 'tripal').'/js/tripal_bulk_loader.js');
}
/*******************************************************************************
 * tripal_bulk_loader_menu
 */
function tripal_bulk_loader_menu() {
  $items = array();
   // Show all loaders
   $items['/tripal_bulk_loaders'] = array(
     'title' => 'Tripal Bulk Loaders',
     'description' => 'Tripal bulk loaders for loading tab-delimited file into chado database',
     'page callback' => 'tripal_bulk_loader_list',
     'access arguments' => array('access tripal_bulk_loader'),
     'type' => MENU_NORMAL_ITEM,
   );
   // Admin page to create the template
   $items['admin/tripal/tripal_bulk_loader_template'] = array(
      'title' => 'Bulk Loader Template',
      'description' => 'Create loader template for loading tab-delimited data',
    	'page callback' => 'tripal_bulk_loader_admin_template',
      'access arguments' => array('administer site configuration'),
      'type' => MENU_NORMAL_ITEM,   
		'file' => 'tripal_bulk_loader.admin.inc',
	);
	$items['admin/tripal/tripal_bulk_loader_template/add'] = array(
      'title' => 'Create Bulk Loader Template',
      'description' => 'Create loader template for loading tab-delimited data',
      'page callback' => 'tripal_bulk_loader_admin_template_add',
      'access arguments' => array('administer site configuration'),
      'type' => MENU_NORMAL_ITEM,   
		'file' => 'tripal_bulk_loader.admin.inc',
	);
		$items['admin/tripal/tripal_bulk_loader_template/add/chado_column'] = array(
      'page callback' => 'tripal_bulk_loader_chado_column_ajax',
		'page arguments' => array(5),
      'access arguments' => array('administer site configuration'),
      'type' => MENU_CALLBACK,   
		'file' => 'tripal_bulk_loader.admin.inc',
	);
	$items['admin/tripal/tripal_bulk_loader_template/delete'] = array(
      'title' => 'Delete Bulk Loader Template',
      'description' => 'Delete bulk loader template',
      'page callback' => 'tripal_bulk_loader_admin_template_delete',
      'access arguments' => array('administer site configuration'),
      'type' => MENU_NORMAL_ITEM,   
		'file' => 'tripal_bulk_loader.admin.inc',
	);
  return $items;
}

/*******************************************************************************
 * tripal_bulk_loader_list
 */
function tripal_bulk_loader_list () {
	return "Loaders";
}

/*******************************************************************************
 *  tripal_bulk_loader_access
 */
function tripal_bulk_loader_access($op, $node, $account){
	if ($op == 'create') {
		return user_access('create tripal_bulk_loader', $account);
	}
	if ($op == 'update') {
		if (user_access('edit tripal_bulk_loader', $account)) {
			return TRUE;
		}
	}
	if ($op == 'delete') {
		if (user_access('delete tripal_bulk_loader', $account)) {
			return TRUE;
		}
	}
	if ($op == 'view') {
		if (user_access('access tripal_bulk_loader', $account)) {
			return TRUE;
		}
	}
	return FALSE;
}

/*******************************************************************************
 * tripal_bulk_loader_perm
 */
function tripal_bulk_loader_perm(){
	return array(
      'access tripal_bulk_loader',
      'create tripal_bulk_loader',
      'delete tripal_bulk_loader',
      'edit tripal_bulk_loader',
	);
}

/*******************************************************************************
 * tripal_bulk_loader_node_info
 */
function tripal_bulk_loader_node_info() {
	$nodes = array();
	$nodes['tripal_bulk_loader'] = array(
      'name' => t('Bulk Loader'),
      'module' => 'tripal_bulk_loader',
      'description' => t('A bulk loader for inserting tab-delimited data into chado database'),
      'has_title' => TRUE,
      'has_body' => FALSE,
      'locked' => TRUE
	);
	return $nodes;
}

/*******************************************************************************
 * tripal_bulk_loader_form
 */
function tripal_bulk_loader_form ($node){
   $form = array();
   $sql = "SELECT * FROM {tripal_bulk_loader_template}";
   $results = db_query($sql);
   $templates = array ();
   while ($template = db_fetch_object ($results)) {
   	$templates [$template->template_id] = $template->name;
   }
   if (!$templates) {
   	$form['label'] = array(
   	'#type' => 'item',
      '#description' => t("Loader template needs to be created before any bulk loader can be added. Go to 'Tripal Management > Bulk Loader Template' to create the template."),
      '#weight'        => 0,
		);
		return $form;
   }
   $form['loader_name'] = array(
   	'#type'          => 'textfield',
      '#title'         => t('Loader Name'),
      '#weight'        => -3,
      '#required'      => TRUE,
   	'#default_value' => $node->loader_name
   );
   
   $sql = "SELECT * FROM {tripal_bulk_loader_template}";
   $results = db_query($sql);
   $templates = array ();
   while ($template = db_fetch_object ($results)) {
   	$templates [$template->template_id] = $template->name;
   }
   $form['template_id'] = array(
      '#type' => 'select',
      '#title' => t('Template'),
   	'#description'   => t('Please specify a template for this loader'),
    	'#options'       => $templates,
   	'#weight'        => -2,
      '#required'      => TRUE,
   	'#default_value' => $node->template_id
   );
   $form['file']= array(
      '#type'          => 'textfield',
      '#title'         => t('Data File'),
      '#description'   => t('Please specify the data file to be loaded.'),
      '#weight'        => -1,
   	'#default_value' => $node->file
   );
   $form['job']= array(
      '#type'          => 'checkbox',
      '#title'         => t('Submit a job to load the data file using selected template'),
      '#weight'        => 0
   );
   return $form;
}

/*******************************************************************************
 * tripal_bulk_loader_theme
 */
function tripal_bulk_loader_theme() {
  return array(
    'tripal_bulk_loader_node_form' => array(
      'arguments' => array('form' => NULL),
    ),
  );
}

/*******************************************************************************
 * theme_tripal_bulk_loader_node_form
 */
function theme_tripal_bulk_loader_node_form($form) {
	// Do not show [Save] and [Preview] buttons if loader template is not available
	if($form['label']['#type'] == "item") {
		unset($form['buttons']);
	}
	unset($form['menu']);
	unset($form['revision_information']);
	unset($form['author']);
	unset($form['path']);
	unset($form['comment_settings']);
	unset($form['options']);
	return drupal_render($form);
}

/*******************************************************************************
 * tripal_bulk_loader_load
 */
function tripal_bulk_loader_load($node){
	$sql = "SELECT * FROM {tripal_bulk_loader} WHERE nid = %d";
	$properties = db_fetch_object(db_query($sql, $node->nid));
	return $properties;
}

/*******************************************************************************
 * tripal_bulk_loader_view
 */
function tripal_bulk_loader_view ($node, $teaser = FALSE, $page = FALSE) {
	if (!$teaser) {
		$node = node_prepare($node, $teaser);
	}
	return $node;
}

/*******************************************************************************
 * tripal_bulk_loader_insert
 */
function tripal_bulk_loader_insert ($node) {
	$sql = "INSERT INTO {tripal_bulk_loader} (nid, loader_name, template_id, file) VALUES (%d, '%s', %d, '%s')";
	db_query($sql, $node->nid, $node->loader_name, $node->template_id, $node->file);
	$node->title =$node->loader_name;
	drupal_write_record('node',$node,'nid');
	drupal_write_record('node_revision',$node,'nid');	
	// Add a job if the user want to load the data
	global $user;
	if($node->job) {
		$job_args[0] =$node->loader_name;
		$job_args[1] = $node->template_id;
		$job_args[2] = $node->file;
		if (is_readable($node->file)) {
			$fname = preg_replace("/.*\/(.*)/", "$1", $node->file);
			tripal_add_job("Bulk Load: $fname",'tripal_bulk_loader', 'tripal_bulk_loader_load_data', $job_args, $user->uid);
		} else {
			drupal_set_message("Can not open $node->file. Job not scheduled.");
		}
	}
}

/*******************************************************************************
 * tripal_bulk_loader_delete
 */
function tripal_bulk_loader_delete ($node) {
	$sql = "DELETE FROM {tripal_bulk_loader} WHERE nid = %d";
	db_query($sql, $node->nid);
}

/*******************************************************************************
 * tripal_bulk_loader_update
 */
function tripal_bulk_loader_update ($node) {
	$sql = "UPDATE {tripal_bulk_loader} SET nid = %d, loader_name = '%s', template_id = %d, file = '%s' WHERE nid = %d";
	db_query($sql, $node->nid, $node->loader_name, $node->template_id, $node->file, $node->nid);
	// Add a job if the user want to load the data
	global $user;
	if($node->job) {
		$job_args[0] =$node->loader_name;
		$job_args[1] = $node->template_id;
		$job_args[2] = $node->file;
		if (is_readable($node->file)) {
			$fname = preg_replace("/.*\/(.*)/", "$1", $node->file);
			tripal_add_job("Bulk Load: $fname",'tripal_bulk_loader', 'tripal_bulk_loader_load_data', $job_args, $user->uid);
		} else {
			drupal_set_message("Can not open $node->file. Job not scheduled.");
		}
	}
}

/*******************************************************************************
 * tripal_bulk_loader_load_data
 */
function tripal_bulk_loader_load_data ($loader_name, $template_id, $file) {
	

}