<?php

require_once "jobs.php";
require_once "mviews.php";
require_once "cvterms.php";
require_once "chado_install.php";
require_once "gff_loader.php";
require_once "bulk_loader.php";

/*************************************************************************
*
*/
function tripal_core_init(){
   // the two lines below are necessary to ensure that the search_path
   // variable is always set.  In the case where a view needs to query the
   // chado schema when it is local to the Drupal database.  Otherwise the
   // search_path isn't set.  When tripal_db_set_active is called it
   // automatically sets the serach path if chado is local to the 
   // Drupal database
   $previous = tripal_db_set_active('chado');
   tripal_db_set_active($previous);

   // create the 'tripal' controlled volcabulary in chado but only if it doesn't already exist
   $previous_db = tripal_db_set_active('chado');  // use chado database
   if(!db_fetch_object(db_query("SELECT * FROM {cv} WHERE name = 'tripal'"))){
      $results = db_query("INSERT INTO {cv} (name,definition) ".
 	                     "VALUES ('tripal','Terms used by Tripal for modules to manage data such as that stored in property tables like featureprop, analysisprop, etc')");
   } 
   if(!db_fetch_object(db_query("SELECT * FROM {db} WHERE name = 'tripal'"))){
      $results = db_query("INSERT INTO {db} (name,description) ". 
	                     "VALUES ('tripal','Used as a database placeholder for tripal defined objects such as tripal cvterms')");
   }  
   tripal_db_set_active($previous_db);  // now use drupal database
}
/*************************************************************************
*
*/
function tripal_create_moddir($module_name){
   // make the data directory for this module
   $data_dir = file_directory_path() . "/tripal/$module_name";
   if(!file_check_directory($data_dir,FILE_CREATE_DIRECTORY|FILE_MODIFY_PERMISSIONS)){
      $message = "Cannot create directory $data_dir. This module may not ".
                 "behave correctly without this directory.  Please  create ".
                 "the directory manually or fix the problem and reinstall.";
      drupal_set_message($message,'error');      
      watchdog('tripal_core',$message,array(),WATCHDOG_ERROR);
   }
}
/*************************************************************************
*
*/
function tripal_get_moddir($module_name){
   $data_dir = file_directory_path() . "/tripal/$module_name";
   return $data_dir;
}
/*************************************************************************
*
*/
function tripal_core_menu() {
   $items = array();
   
   // Triapl setting groups
   $items['admin/tripal'] = array(
      'title' => 'Tripal Management',
      'description' => "Manage the behavior or Tripal and its various modules.",
      'position' => 'right',
      'weight' => -5,
      'page callback' => 'system_admin_menu_block_page',
      'access arguments' => array('administer site configuration'),
      'file' => 'system.admin.inc',
      'file path' => drupal_get_path('module', 'system'),
   );

   // the administative settings menu
/*   $items['admin/tripal/tripal_core'] = array(
     'title' => 'Tripal core settings',
     'description' => 'Tripal Settings',
     'page callback' => 'drupal_get_form',
     'page arguments' => array('tripal_core_admin'),
     'access arguments' => array('access administration pages'),
     'type' => MENU_NORMAL_ITEM,
   );
*/
   $items['admin/tripal/tripal_jobs'] = array(
     'title' => 'Jobs',
     'description' => 'Jobs managed by Tripal',
     'page callback' => 'tripal_jobs_report',
     'access arguments' => array('access administration pages'),
     'type' => MENU_NORMAL_ITEM,
   );
   $items['admin/tripal/tripal_mview/%'] = array(
     'title' => 'Materialized View',
     'description' => 'Materialized views are used to improve speed of large or complex queries.',
     'page callback' => 'tripal_mview_report',
     'page arguments' => array(3),
     'access arguments' => array('access administration pages'),
     'type' => MENU_NORMAL_ITEM,
   );
   $items['admin/tripal/tripal_mviews'] = array(
     'title' => 'Materialized Views',
     'description' => 'Materialized views are used to improve speed of large or complex queries.',
     'page callback' => 'tripal_mviews_report',
     'access arguments' => array('access administration pages'),
     'type' => MENU_NORMAL_ITEM,
   );
   $items['admin/tripal/tripal_mviews/new'] = array(
     'title' => 'Create View',
     'description' => 'Materialized views are used to improve speed of large or complex queries.',
     'page callback' => 'drupal_get_form',
     'page arguments' => array('tripal_mviews_form'),
     'access arguments' => array('access administration pages'),
     'type' => MENU_NORMAL_ITEM,
   );
   $items['admin/tripal/tripal_mviews/edit/%'] = array(
     'title' => 'Edit View',
     'page callback' => 'drupal_get_form',
     'page arguments' => array('tripal_mviews_form',4),
     'access arguments' => array('access administration pages'),
     'type' => MENU_NORMAL_ITEM,
   );
   $items['admin/tripal/tripal_mviews/action/%/%'] = array(
     'title' => 'Create View',
     'description' => 'Materialized views are used to improve speed of large or complex queries.',
     'page callback' => 'tripal_mviews_action',
     'page arguments' => array(4,5),
     'access arguments' => array('access administration pages'),
     'type' => MENU_CALLBACK,
   );

   $items['tripal_toggle_box_menu/%/%/%'] = array(
     'title' => t('Libraries'),
     'page callback' => 'tripal_toggle_box_menu',
     'page arguments' => array(1,2,3),
     'access arguments' => array('access administration pages'),
     'type' => MENU_CALLBACK | MENU_LINKS_TO_PARENT 
   );
   $items['admin/tripal/chado_1_11_install'] = array(
     'title' => 'Install Chado v1.11',
     'description' => 'Installs Chado version 1.11 inside the current Drupal database',
     'page callback' => 'drupal_get_form',
     'page arguments' => array('tripal_core_chado_v1_11_load_form'),
     'access arguments' => array('access administration pages'),
     'type' => MENU_NORMAL_ITEM,
   );
   $items['admin/tripal/gff3_load'] = array(
     'title' => 'Import a GFF3 file',
     'description' => 'Import a GFF3 file into Chado',
     'page callback' => 'drupal_get_form',
     'page arguments' => array('tripal_core_gff3_load_form'),
     'access arguments' => array('access administration pages'),
     'type' => MENU_NORMAL_ITEM,
   );

   $items['admin/tripal/bulk_load/create'] = array(
     'title' => 'Create Bulk Loader',
     'description' => 'Create a bulk loader template for loading data into Chado',
     'page callback' => 'tripal_core_bulk_loader_create',
     'access arguments' => array('access administration pages'),
     'type' => MENU_NORMAL_ITEM,
   );

  return $items;
}
/************************************************************************
*  The typical display for information on feature, organism, library, etc
*  pages is to use the Tripal expandable boxes.  However, some sites may
*  prefer to use a menu system to keep the pages less cluttered.  This
*  function provides a common interface for setting a Drupal variable
*  that indicates whether or not the content is displayed in a box or as
*  a menu item.  This function just reverses the setting each time it is
*  called
*/
function tripal_toggle_box_menu($module,$box_name,$nid){
   // if the content is not in a menu then we wnat to turn on the
   // menu. If the content is in a menu item then we want to turn
   // on the box. 
   if(strcmp(variable_get("$module-box-$box_name","menu_off"),"menu_off")==0){
      variable_set("$module-box-$box_name","menu_on");
   } else {
      variable_set("$module-box-$box_name","menu_off");
   }
   drupal_goto("node/$nid");
}
/************************************************************************
*
*/
function tripal_core_admin () {


   $form['chado_feature_data_url'] = array (
      '#title'       => t('URL for data files'),
      '#type'        => t('textfield'),
      '#description' => t("This is the base URL location (without a leading forward slash)  for where files (e.g. blast .xml files) related to each feature are stored. All files available for download or parsing that a feature needs for display should be located in this base directory."), 
      '#required'    => TRUE,
      '#default_value' => variable_get('chado_feature_data_url','sites/default/files/data'),
   );
   
   return system_settings_form($form);
}
/************************************************************************
* The tripal_db_set_active function is used to prevent namespace collisions
* when chado and drupal are installed in the same database but in different
* schemas.  It is also used for backwards compatibility with older versions
* of tripal or in cases where chado is located outside of the Drupal database.
*/
function tripal_db_set_active($dbname){
   global $db_url, $db_type;
   $chado_exists = 0;

   // only postgres can support search paths.  So if this is MysQL then
   // just run the normal tripal_db_set_active function.
   if(strcmp($db_type,'pgsql')==0){

      // if the 'chado' database is in the $db_url variable then chado is 
      // not in the same Drupal database
      if(is_array($db_url)){ 
         if(isset($db_url[$dbname])){
            return db_set_active($dbname);
         } 
      }

      // check to make sure the chado schema exists
      $sql = "select nspname from pg_catalog.pg_namespace where nspname = 'chado'";
      if(db_fetch_object(db_query($sql))){
         $chado_exists = 1;
      }

      // here we make the assumption that the default database schema is
      // 'public'.  This will most likely always be the case but if not,
      // then this code will break
      if($chado_exists && strcmp($dbname,'chado')==0){
         db_query("set search_path to %s",'chado,public');  
         return 'public,chado';
      } 
      elseif($chado_exists) {
         db_query("set search_path to %s",'public,chado');  
         return 'chado,public';
      }
      else {
         return db_set_active($dbname);
      }
   }
   else return db_set_active($dbname);
}

/*************************************************************************
 * Implements hook_views_api()
 * Purpose: Essentially this hook tells drupal that there is views support for
 *  for this module which then includes tripal_core.views.inc where all the
 *  views integration code is
 */ 
function tripal_core_views_api() {
   return array(
      'api' => 2.0,
   );
}