<?php

/************************************************************************
*  Implementation of hook_install();
*/
function tripal_core_install(){

   // make the data directory for this module
   $data_dir = file_directory_path() . "/tripal";
   if(!file_check_directory($data_dir,FILE_CREATE_DIRECTORY)){
      $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);
   }

  // create the tables that manage materialized views and jobs
  drupal_install_schema('tripal_core');

}

/************************************************************************
* Implementation of hook_schema().
*/
function tripal_core_schema() {
   $schema = tripal_core_get_schemas();
   return $schema;
}
/************************************************************************
* Implementation of hook_uninstall()
*/
function tripal_core_uninstall(){
   drupal_uninstall_schema('tripal_core');
}

/************************************************************************
* This function simply defines all tables needed for the module to work
* correctly.  By putting the table definitions in a separate function we
* can easily provide the entire list for hook_install or individual
* tables for an update.
*/
function tripal_core_get_schemas (){  
  $schema = array();


  $schema['tripal_jobs'] = array(
      'fields' => array(
         'job_id' => array('type' => 'serial', 'unsigned' => TRUE, 'not null' => TRUE),
         'uid' => array ('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'description' => 'The Drupal userid of the submitee'),
         'job_name' => array('type' => 'varchar','length' => 255, 'not null' => TRUE),
         'modulename' => array('type' => 'varchar','length' => 50, 'not null' => TRUE, 'description' => 'The module name that provides the callback for this job'),
         'callback' => array('type' => 'varchar','length' => 255, 'not null' => TRUE),
         'arguments' => array('type' => 'text', 'size' => 'normal', 'not null' => FALSE),
         'progress' => array('type' => 'int', 'unsigned' => TRUE, 'default' => 0, 'not null' => FALSE, 'description' => 'a value from 0 to 100 indicating percent complete'),
         'status' => array('type' => 'varchar','length' => 50, 'not null' => TRUE),
         'submit_date' => array ('type' => 'int', 'not null' => TRUE, 'description' => 'UNIX integer submit time'),
         'start_time' => array ('type' => 'int', 'not null' => FALSE, 'description' => 'UNIX integer start time'),
         'end_time' => array ('type' => 'int', 'not null' => FALSE, 'description' => 'UNIX integer end time'),
         'error_msg' => array('type' => 'text','size' => 'normal', 'not null' => FALSE),
         'pid' => array ('type' => 'int', 'unsigned' => TRUE, 'not null' => FALSE, 'description' => 'The process id for the job'),
         'priority' => array ('type' => 'int', 'unsigned' => TRUE, 'not null' => TRUE, 'default' => '0', 'description' => 'The job priority'),
         'mlock' => array ('type' => 'int', 'unsigned' => TRUE, 'not null' => FALSE, 'description' => 'If set to 1 then all jobs for the module are held until this one finishes'),
         'lock' => array ('type' => 'int', 'unsigned' => TRUE, 'not null' => FALSE, 'description' => 'If set to 1 then all jobs are held until this one finishes'),
      ),
      'indexes' => array(
         'job_id' => array('job_id'),
         'job_name' => array('job_name')
      ),
      'primary key' => array('job_id'),
  );

  $schema['tripal_mviews'] = array(
      'fields' => array(
         'mview_id' => array('type' => 'serial', 'unsigned' => TRUE, 'not null' => TRUE),
         'name' => array('type' => 'varchar','length' => 255, 'not null' => TRUE),
         'modulename' => array('type' => 'varchar','length' => 50, 'not null' => TRUE, 'description' => 'The module name that provides the callback for this job'),
         'mv_table' => array('type' => 'varchar','length' => 128, 'not null' => TRUE),
         'mv_specs' => array('type' => 'text', 'size' => 'normal', 'not null' => TRUE),
         'indexed' => array('type' => 'text', 'size' => 'normal', 'not null' => TRUE),
         'query' => array('type' => 'text', 'size' => 'normal', 'not null' => TRUE),
         'special_index' => array('type' => 'text', 'size' => 'normal', 'not null' => FALSE),
         'last_update' => array ('type' => 'int', 'not null' => FALSE, 'description' => 'UNIX integer time'),
      ),
      'indexes' => array(
         'mview_id' => array('mview_id')
      ),
      'unique keys' => array(
         'mv_table' => array('mv_table'),
         'mv_name' => array('name'),
      ),
      'primary key' => array('mview_id'),
  );

  return $schema;
}
?>