<?php
/**
 * Implements hook_vocab_storage_info().
 *
 * This hook is created by the Tripal module and is not a Drupal hook.
 */
function tripal_chado_vocab_storage_info() {
  return array(
    'term_chado_storage' => array(
      'label' => t('Chado'),
      'module' => 'tripal_chado',
      'description' => t('Integrates terms stored in the local Chado database
          with Tripal entities.'),
      'settings' => array(),
    ),
  );
}
/**
 * Implements hook_vocab_get_vocabulary().
 *
 * This hook is created by the Tripal module and is not a Drupal hook.
 */
function tripal_chado_vocab_get_vocabulary($vocabulary) {
  // It's possible that Chado is not available (i.e. it gets renamed
  // for copying) but Tripal has already been prepared and the
  // entities exist.  If this is the case we don't want to run the
  // commands below.
  if (!chado_table_exists('cv')) {
    return FALSE;
  }
  $sql = "
     SELECT DB.name as name, CV.name as short_name, DB.description, DB.url
     FROM {db} DB
      INNER JOIN {dbxref} DBX on DBX.db_id = DB.db_id
      INNER JOIN {cvterm} CVT on CVT.dbxref_id = DBX.dbxref_id
      INNER JOIN {cv} CV on CV.cv_id = CVT.cv_id
     WHERE
      DB.name = :name
     LIMIT 1 OFFSET 0
  ";
  $result = chado_query($sql, array(':name' => $vocabulary));
  $result = $result->fetchAssoc();
  return $result;
}

/**
 * Implements hook_vocab_get_term().
 *
 * This hook is created by the Tripal module and is not a Drupal hook.
 */
function tripal_chado_vocab_get_term($vocabulary, $accession) {

  // It's possible that Chado is not available (i.e. it gets renamed
  // for copying) but Tripal has already been prepared and the
  // entities exist.  If this is the case we don't want to run the
  // commands below.
  if (!chado_table_exists('cvterm')) {
    return FALSE;
  }
  $match = array(
    'dbxref_id' => array(
      'db_id' => array(
        'name' => $vocabulary,
      ),
      'accession' => $accession,
    ),
  );
  $cvterm = chado_generate_var('cvterm', $match);
  if (!$cvterm) {
    return FALSE;
  }
  $cvterm = chado_expand_var($cvterm, 'field', 'cvterm.definition');
  $term = array(
    'vocabulary' => array(
      'name' => $cvterm->cv_id->name,
      'short_name' => $cvterm->dbxref_id->db_id->name,
      'description' =>  $cvterm->dbxref_id->db_id->description,
      'url' => $cvterm->dbxref_id->db_id->url
    ),
    'accession'  => $cvterm->dbxref_id->accession,
    'name'       => $cvterm->name,
    'url'        => tripal_get_dbxref_url($cvterm->dbxref_id),
    'definition' => (isset($cvterm->definition)) ? $cvterm->definition : '',
  );
  return $term;
}

/**
 * Implements hook_vocab_add_term().
 *
 * This hook is created by the Tripal module and is not a Drupal hook.
 */
function tripal_chado_vocab_add_term($details) {
  $vocabulary = $details['vocab']['name'];
  $accession = $details['accession'];

  // First check to make sure the term doesn't already exist
  $term = tripal_chado_vocab_get_term($vocabulary, $accession);
  if ($term) {
    return TRUE;
  }

  // First make sure the vocabulary is added.
  $values = array(
    'name' => $vocabulary,
    'description' => $details['vocab']['description'],
    'url' => $details['vocab']['url'],
    // TODO: deal with the URL prefix
  );
  $options = array('update_existing' => TRUE);
  tripal_insert_db($values, $options);


  // Second make sure the term is added.
  $term = tripal_insert_cvterm(array(
    'id' => $vocabulary . ':' . $accession,
    'name' => $details['name'],
    'definition' => $details['definition'],
    'cv_name' => $details['vocab']['name'],
  ));

  // Return TRUE on success.
  if (!$term) {
    return FALSE;
  }
  return TRUE;
}

/**
 * Implements hook_vocab_import_form();
 */
function tripal_chado_vocab_import_form($form, &$form_state) {
  module_load_include('inc', 'tripal_chado', 'includes/loaders/tripal_chado.obo_loader');
  return tripal_cv_obo_form($form, $form_state);
}
/**
 * Implements hook_vocab_import_form_validate();
 */
function tripal_chado_vocab_import_form_validate($form, &$form_state) {
  module_load_include('inc', 'tripal_chado', 'includes/loaders/tripal_chado.obo_loader');
  return tripal_cv_obo_form_validate($form, $form_state);
}
/**
 * Implements hook_vocab_import_form_submit();
 */
function tripal_chado_vocab_import_form_submit($form, &$form_state) {
  module_load_include('inc', 'tripal_chado', 'includes/loaders/tripal_chado.obo_loader');
  return tripal_cv_obo_form_submit($form, $form_state);
}