<?php
/**
 * Install the tripal stock module including it's content type
 * @file
 */

/**
 * Implements hook_disable().
 * Disable default views when module is disabled
 *
 * @ingroup tripal_legacy_stock
 */
function tripal_stock_disable() {

  // Disable all default views provided by this module
  require_once("tripal_stock.views_default.inc");
  $views = tripal_stock_views_default_views();
  foreach (array_keys($views) as $view_name) {
    tripal_disable_view($view_name,FALSE,array('suppress_error' => TRUE));
  }

}

/**
 * Implementation of hook_requirements().
 *
 * @ingroup tripal_legacy_stock
 */
function tripal_stock_requirements($phase) {
  $requirements = array();
  if ($phase == 'install') {
    // make sure chado is installed
    if (!$GLOBALS["chado_is_installed"]) {
      $requirements ['tripal_stock'] = array(
        'title' => "tripal_stock",
        'value' => "ERROR: Chado must be installed before this module can be enabled",
        'severity' => REQUIREMENT_ERROR,
      );
    }
  }
  return $requirements;
}

/**
 * Implementation of hook_install().
 *
 * @ingroup tripal_legacy_stock
 */
function tripal_stock_install() {
  // set the default vocabularies
  tripal_set_default_cv('stock', 'type_id', 'stock_type');
  tripal_set_default_cv('stockprop', 'type_id', 'stock_property');
  tripal_set_default_cv('stock_relationship', 'type_id', 'stock_relationship');

  // add the materialized view
  tripal_stock_add_organism_count_mview();
}

/**
 * Implementation of hook_uninstall().
 *
 * @ingroup tripal_legacy_stock
 */
function tripal_stock_uninstall() {

}

/**
 * Implementation of hook_schema().
 *
 * @ingroup tripal_legacy_stock
 */
function tripal_stock_schema() {
  $schema['chado_stock'] = array(
    'fields' => array(
      'vid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'nid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'stock_id' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
    ),
    'indexes' => array(
      'stock_id' => array('stock_id'),
       'nid' => array('nid'),
    ),
    'unique' => array(
      'stock_id' => array('stock_id'),
    ),
    'primary key' => array('vid'),
  );

  return $schema;
}

/**
 * Creates a materialized view that stores the type & number of stocks per organism
 *
 * @ingroup tripal_stock
 */
function tripal_stock_add_organism_count_mview() {
  $view_name = 'organism_stock_count';
  $comment = 'Stores the type and number of stocks per organism';

  $schema = array(
    'description' => $comment,
    'table' => $view_name,
    'fields' => array(
      'organism_id' => array(
        'size' => 'big',
        'type' => 'int',
        'not null' => TRUE,
      ),
      'genus' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
      ),
      'species' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
      ),
      'common_name' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => FALSE,
      ),
      'num_stocks' => array(
        'type' => 'int',
        'not null' => TRUE,
      ),
      'cvterm_id' => array(
        'size' => 'big',
        'type' => 'int',
        'not null' => TRUE,
      ),
      'stock_type' => array(
        'type' => 'varchar',
        'length' => '255',
        'not null' => TRUE,
      ),
    ),
    'indexes' => array(
      'organism_stock_count_idx1' => array('organism_id'),
      'organism_stock_count_idx2' => array('cvterm_id'),
      'organism_stock_count_idx3' => array('stock_type'),
    ),
  );

  $sql = "
    SELECT
        O.organism_id, O.genus, O.species, O.common_name,
        count(S.stock_id) as num_stocks,
        CVT.cvterm_id, CVT.name as stock_type
     FROM organism O
        INNER JOIN stock S  ON O.Organism_id = S.organism_id
        INNER JOIN cvterm CVT ON S.type_id     = CVT.cvterm_id
     GROUP BY
        O.Organism_id, O.genus, O.species, O.common_name, CVT.cvterm_id, CVT.name
  ";

  tripal_add_mview($view_name, 'tripal_stock', $schema, $sql, $comment);
}