<?php

/**
 * @file
 * Contains all the main hook implementations for the tripal_analysis module
 *
 * @defgroup tripal_analysis Analysis Module
 * @ingroup tripal_modules
 * @{
 * Provides functions for managing chado analysis' including creating details pages for each one
 *
 * @}
 *
 *
 */

require('api/tripal_analysis.api.inc');
require('includes/tripal_analysis_privacy.inc');
require('includes/tripal_analysis.admin.inc');
require('includes/tripal_analysis.form.inc');


/**
 * Add tripal javascript to page headers
 *
 * @ingroup tripal_analysis
 */
function tripal_analysis_init() {
  drupal_add_js(drupal_get_path('theme', 'tripal') . '/js/tripal_analysis.js');
  drupal_add_css(drupal_get_path('theme', 'tripal') . '/css/tripal_analysis.css');
}

/**
 * Provide information to drupal about the node types that we're creating
 * in this module
 *
 * @ingroup tripal_analysis
 */
function tripal_analysis_node_info() {
  $nodes = array();
  $nodes['chado_analysis'] = array(
      'name' => t('Analysis'),
      'base' => 'chado_analysis',
      'description' => t('An analysis'),
      'has_title' => FALSE,
      'title_label' => t('Analysis'),
      'locked' => TRUE
  );
  return $nodes;
}
/**
 * Implementation of hook_menu().
 * Entry points and paths of the module
 *
 * @ingroup tripal_analysis
 */
function tripal_analysis_menu() {
  //Sync analysis
  $items['chado_sync_analyses'] = array(
     'title' => 'Sync Data',
     'page callback' => 'tripal_analysis_sync_analyses',
     'access arguments' => array('administer tripal analyses'),
     'type' => MENU_CALLBACK
  );
  // Tripal Analysis administrative settings
  $items['admin/tripal/chado/tripal_analysis'] = array(
      'title' => 'Analyses',
      'description' => 'A bioinformatics analysis producing features.',
      'access arguments' => array('administer tripal analyses'),
      'type' => MENU_NORMAL_ITEM,
  );

  $items['admin/tripal/chado/tripal_analysis/help'] = array(
      'title' => 'Help',
      'description' => "A description of the Tripal Analysis module including a short description of it's usage.",
      'page callback' => 'theme',
      'page arguments' => array('tripal_analysis_admin'),
      'access arguments' => array('administer tripal analyses'),
      'type' => MENU_NORMAL_ITEM,
      'file' => 'includes/tripal_analysis.admin.inc',
      'weight' => 10
  );

  $items['admin/tripal/chado/tripal_analysis/configuration'] = array(
      'title' => 'Configuration',
      'description' => 'Settings for the displays of analysis results.',
      'page callback' => 'drupal_get_form',
      'page arguments' => array('tripal_analysis_admin'),
      'access arguments' => array('administer tripal analyses'),
      'type' => MENU_NORMAL_ITEM,
      'file' => 'includes/tripal_analysis.admin.inc',
  );


  $items['tripal_analysis/properties/minus/%/%'] = array(
    'page callback' => 'tripal_analysis_property_delete',
    'page arguments' => array(3, 4),
    'access arguments' => array('edit chado_analysis content'),
    'type ' => MENU_CALLBACK,
  );


  return $items;
}

/**
 * Implements hook_help()
 * Purpose: Adds a help page to the module list
 */
function tripal_analysis_help ($path, $arg) {
  if ($path == 'admin/help#tripal_analysis') {
    return theme('tripal_analysis_admin', array());
  }
}

/**
 *  When a new chado_analysis node is created we also need to add information
 *  to our chado_analysis table.  This function is called on insert of a new
 *  node of type 'chado_analysis' and inserts the necessary information.
 *
 * @ingroup tripal_analysis
 */
function chado_analysis_insert($node) {
  global $user;

  // Create a timestamp so we can insert it into the chado database
  $time  = $node->timeexecuted;
  $month = $time['month'];
  $day   = $time['day'];
  $year  = $time['year'];
  $timestamp = $month . '/' . $day . '/' . $year;

  // If this analysis already exists then don't recreate it in chado
  $analysis_id = $node->analysis_id;
  if ($analysis_id) {
    $values = array('analysis_id' => $node->analysis_id);
    $result = tripal_core_chado_select('analysis', array('analysis_id'), $values);
    if ($result and count($result) > 0) {
      $analysis = $result[0];
    }
  }

  // If the analysis doesn't exist then let's create it in chado.
  if (!$analysis) {
    // insert and then get the newly inserted analysis record
    $values = array(
      'name'           => $node->analysisname,
      'description'    => $node->description,
      'program'        => $node->program,
      'programversion' => $node->programversion,
      'algorithm'      => $node->algorithm,
      'sourcename'     => $node->sourcename,
      'sourceversion'  => $node->sourceversion,
      'sourceuri'      => $node->sourceuri,
      'timeexecuted'   => $timestamp
    );
    if (tripal_core_chado_insert('analysis', $values)) {
      $analysis = tripal_core_chado_select('analysis', array('*'), $values);
      $analysis_id = $analysis[0]->analysis_id;
    }
  }

  // Make sure the entry for this analysis doesn't already exist in the
  // chado_analysis table if it doesn't exist then we want to add it.
  $node_check_sql = "SELECT * FROM {chado_analysis} " .
                    "WHERE analysis_id = :analysis_id";
  $node_check = db_query($node_check_sql, array(':analysis_id' => $analysis_id))->fetchObject();
  if (!$node_check) {
    // next add the item to the drupal table
    $sql = "INSERT INTO {chado_analysis} (nid, vid, analysis_id) " .
           "VALUES (:nid, :vid, :analysis_id)";
    db_query($sql, array(':nid' => $node->nid, ':vid' => $node->vid, ':analysis_id' => $analysis_id));
    // Create a title for the analysis node using the unique keys so when the
    // node is saved, it will have a title
    $record = new stdClass();
    // If the analysis has a name, use it as the node title. If not, construct
    // the title using program, programversion, and sourcename
    if ($node->analysisname) {
      $record->title = $node->analysisname;
    }
    else {
      //Construct node title as "program (version)
      $record->title = "$node->program ($node->programversion)";
    }
    $record->nid = $node->nid;
    drupal_write_record('node', $record, 'nid');
    drupal_write_record('node_revisions', $record, 'nid');
  }

  // add the analysis to the node object for
  // use by other analysis modules that may be using this function
  $node->analysis = $analysis;
  $node->analysis_id = $analysis_id; // we need to set this for children

  // now add the properties
  $properties = array(); // stores all of the properties we need to add

  // get the list of properties for easy lookup (without doing lots of database queries
  $properties_list = array();
  $sql = "
      SELECT DISTINCT CVT.cvterm_id, CVT.name, CVT.definition
      FROM  {cvterm} CVT
        INNER JOIN {cv} ON CVT.cv_id = CV.cv_id
      WHERE
        CV.name = 'analysis_property' AND
        NOT CVT.is_obsolete = 1
      ORDER BY CVT.name ASC
  ";
  $prop_types = chado_query($sql);
  while ($prop = $prop_types->fetchObject()) {
    $properties_list[$prop->cvterm_id] = $prop->name;
  }

  // get the properties that should be added. Properties are in one of two forms:
  //  1) prop_value-[type id]-[index]
  //  2) new_value-[type id]-[index]
  //  3) new_id, new_value

  foreach ($node as $name => $value) {
    if (preg_match('/^new_value-(\d+)-(\d+)/', $name, $matches)) {
        $type_id = $matches[1];
        $index = $matches[2];
        $name = $properties_list[$type_id];
        $properties[$name][$index] = trim($value);
      }
  }
    if ($node->new_id and $node->new_value) {
      $type_id = $node->new_id;
      $name = $properties_list[$type_id];
      $index = count($properties[$name]);
      $properties[$name][$index] = trim($node->new_value);
    }
    // now add in the properties
    foreach ($properties as $property => $elements) {
      foreach ($elements as $rank => $value) {
        $status = tripal_analysis_insert_property($analysis_id, $property, $value, FALSE, 'analysis_property');
        if (!$status) {
            drupal_set_message("Error cannot add property: $property", "error");
            watchdog('t_analysis', "Error cannot add property: %prop",
              array('%property' => $property), WATCHDOG_ERROR);
        }
      }
    }
}

/**
 * Removes analysis from the chado database
 *
 * @param $node
 *   The node object specifying which chado record to delete
 *
 * @ingroup tripal_analysis
 */
function chado_analysis_delete($node) {
  $analysis_id = chado_get_id_for_node('analysis', $node->nid);

  // if we don't have an analysis id for this node then this isn't a node of
  // type chado_analysis or the entry in the chado_analysis table was lost.
  if (!$analysis_id) {
    return;
  }

  // Remove data from the {chado_analysis}, {node}, and {node_revisions} tables
  $sql_del = "DELETE FROM {chado_analysis} " .
              "WHERE nid = :nid " .
              "AND vid = :vid";
  db_query($sql_del, array(':nid' => $node->nid, ':vid' => $node->vid));
  $sql_del = "DELETE FROM {node} " .
              "WHERE nid = :nid " .
              "AND vid = :vid";
  db_query($sql_del, array(':nid' => $node->nid, ':vid' => $node->vid));
  $sql_del = "DELETE FROM {node_revision} " .
              "WHERE nid = :nid " .
              "AND vid = :vid";
  db_query($sql_del, array(':nid' => $node->nid, ':vid' => $node->vid));

  //Remove from analysis and analysisprop tables of chado database as well
  chado_query("DELETE FROM {analysis} WHERE analysis_id = :analysis_id", array(':analysis_id' => $analysis_id));
}

/**
 * Update analyses
 *
 * @param $node
 *   The updated node object
 *
 * @ingroup tripal_analysis
 */
function chado_analysis_update($node) {
  global $user;
  if ($node->revision) {
    // TODO -- decide what to do about revisions
  }
  // Create a timestamp so we can insert it into the chado database
  $time = $node->timeexecuted;
  $month = $time['month'];
  $day = $time['day'];
  $year = $time['year'];
  $timestamp = $month . '/' . $day . '/' . $year;

  // get the analysis_id for this node:
  $sql = "
    SELECT analysis_id
    FROM {chado_analysis}
    WHERE nid = :nid
  ";
  $analysis = db_query($sql, array(':nid' => $node->nid))->fetchObject();
  $analysis_id = $analysis->analysis_id;

  $sql = "
    UPDATE {analysis}
    SET name = :name,
        description = :description,
        program = :program,
        programversion = :programversion,
        algorithm = :algorithm,
        sourcename = :sourcename,
        sourceversion = :sourceversion,
        sourceuri = :sourceuri,
        timeexecuted = :timeexecuted
    WHERE analysis_id = :analysis_id
  ";

  $args = array(
    ':name' => $node->analysisname,
    ':description' => $node->description,
    ':program' => $node->program,
    ':programversion' => $node->programversion,
    ':algorithm' => $node->algorithm,
    ':sourcename' => $node->sourcename,
    ':sourceversion' => $node->sourceversion,
    ':sourceuri' => $node->sourceuri,
    ':timeexecuted' => $timestamp,
    ':analysis_id' => $anslysis_id
  );
  chado_query($sql, $args);

  // Create a title for the analysis node using the unique keys so when the
  // node is saved, it will have a title
  $record = new stdClass();
  // If the analysis has a name, use it as the node title. If not, construct
  // the title using program, programversion, and sourcename
  if ($node->analysisname) {
    $record->title = $node->analysisname;
  }
  else {
    //Construct node title as "program (version)
    $record->title = "$node->program ($node->programversion)";
  }

  $record->nid = $node->nid;
  drupal_write_record('node', $record, 'nid');
  drupal_write_record('node_revisions', $record, 'nid');

  // now update the properties
  $properties = array(); // stores all of the properties we need to add
  // get the list of properties for easy lookup (without doing lots of database queries
  $properties_list = array();
  $sql = "
      SELECT DISTINCT CVT.cvterm_id, CVT.name, CVT.definition
      FROM  {cvterm} CVT
      INNER JOIN {cv} ON CVT.cv_id = CV.cv_id
      WHERE
      CV.name = 'analysis_property' AND
      NOT CVT.is_obsolete = 1
      ORDER BY CVT.name ASC
      ";
  $prop_types = chado_query($sql);
  while ($prop = $prop_types->fetchObject()) {
    $properties_list[$prop->cvterm_id] = $prop->name;
  }

  // get the properties that should be added. Properties are in one of three forms:
  //  1) prop_value-[type id]-[index]
  //  2) new_value-[type id]-[index]
  //  3) new_id, new_value
  //  dpm($node);
  foreach ($node as $key => $value) {
    if (preg_match('/^prop_value-(\d+)-(\d+)/', $key, $matches)) {
      $type_id = $matches[1];
      $index = $matches[2];
      $name = $properties_list[$type_id];
      $properties[$name][$index] = trim($value);
    }
    if (preg_match('/^new_value-(\d+)-(\d+)/', $key, $matches)) {
      $type_id = $matches[1];
      $index = $matches[2];
      $name = $properties_list[$type_id];
      $properties[$name][$index] = trim($value);
    }
  }
  if ($node->new_id and $node->new_value) {
    $type_id = $node->new_id;
    $name = $properties_list[$type_id];
    $index = count($properties[$name]);
    $properties[$name][$index] = trim($node->new_value);
  }

  // now add in the properties by first removing any the analysis
  // already has and adding the ones we have
  $sql = "
    DELETE FROM {analysisprop} WHERE analysis_id = :analysis_id AND type_id IN (
      SELECT CVT.cvterm_id
      FROM  {cvterm} CVT
        INNER JOIN {cv} ON CVT.cv_id = CV.cv_id
      WHERE CV.name = 'analysis_property')
  ";
  $success = chado_query($sql, array(':analysis_id' => $analysis_id));
  if (!$success) {
    drupal_set_message("Cannot update analysis properties", "error");
    watchdog('t_analysis', "Cannot update analysis properties.", array(), WATCHDOG_ERROR);
    return;
  }
  foreach ($properties as $property => $elements) {
    foreach ($elements as $rank => $value) {
      $status = tripal_analysis_insert_property($analysis_id, $property, $value, FALSE, 'analysis_property');
      if (!$status) {
        drupal_set_message("Error cannot add property: '$property'", "error");
        watchdog('t_analysis', "Error cannot add property: '%prop'",
          array('%prop' => $property), WATCHDOG_ERROR);
      }
    }
  }
}

 /**
  *  When a node is requested by the user this function is called to allow us
  *  to add auxiliary data to the node object.
  *
  * @ingroup tripal_analysis
  */
function chado_analysis_load($node) {

   // get the feature details from chado
  $analysis_id = chado_get_id_for_node('analysis', $node->nid);

  $values = array('analysis_id' => $analysis_id);
  $analysis = tripal_core_generate_chado_var('analysis', $values);

  $additions = new stdClass();
  $additions->analysis = $analysis;
  return $additions;
}

/**
 *  This function customizes the view of the chado_analysis node.  It allows
 *  us to generate the markup.
 *
 * @ingroup tripal_analysis
 */
function chado_analysis_view($node, $teaser = FALSE, $page = FALSE) {
  // use drupal's default node view:
  if (!$teaser) {
    $node = node_prepare($node, $teaser);
    // When previewing a node submitting form, it shows 'Array' instead of
    // correct date format. We need to format the date here
    $time = $node->timeexecuted;
    if (is_array($time)) {
      $month = $time['month'];
      $day = $time['day'];
      $year = $time['year'];
      $timestamp = $year . '-' . $month . '-' . $day;
      $node->timeexecuted = $timestamp;
    }
  }
  return $node;
}

/**
 * Implement hook_access().
 *
 * This hook allows node modules to limit access to the node types they define.
 *
 *  @param $node
 *  The node on which the operation is to be performed, or, if it does not yet exist, the
 *  type of node to be created
 *
 *  @param $op
 *  The operation to be performed
 *
 *  @param $account
 *  A user object representing the user for whom the operation is to be performed
 *
 *  @return
 *  If the permission for the specified operation is not set then return FALSE. If the
 *  permission is set then return NULL as this allows other modules to disable
 *  access.  The only exception is when the $op == 'create'.  We will always
 *  return TRUE if the permission is set.
 *
 * @ingroup tripal_analysis
 */
function chado_analysis_node_access($node, $op, $account) {

  if ($op == 'create') {
    if (!user_access('create chado_analysis content', $account)) {
      return FALSE;
    }
    return TRUE;
  }
  if ($op == 'update') {
    if (!user_access('edit chado_analysis content', $account)) {
      return FALSE;
    }
  }
  if ($op == 'delete') {
    if (!user_access('delete chado_analysis content', $account)) {
      return FALSE;
    }
  }
  if ($op == 'view') {
    if (!user_access('access chado_analysis content', $account)) {
      return FALSE;
    }
  }
  return NULL;
}

/**
 *  Set the permission types that the chado module uses.  Essentially we
 *  want permissionis that protect creation, editing and deleting of chado
 *  data objects
 *
 * @ingroup tripal_analysis
 */
function tripal_analysis_permission() {
  return array(
    'access chado_analysis content' => array(
      'title' => t('View Analyses'),
      'description' => t('Allow users to view analysis pages.'),
    ),
    'create chado_analysis content' => array(
      'title' => t('Create Analyses'),
      'description' => t('Allow users to create new analysis pages.'),
    ),
    'delete chado_analysis content' => array(
      'title' => t('Delete Analyses'),
      'description' => t('Allow users to delete analysis pages.'),
    ),
    'edit chado_analysis content' => array(
      'title' => t('Edit Analyses'),
      'description' => t('Allow users to edit analysis pages.'),
    ),
    'adminster tripal analysis' => array(
      'title' => t('Administer Analyses'),
      'description' => t('Allow users to administer all analyses.'),
    ),
  );
}

/**
 *  We need to let drupal know about our theme functions and their arguments.
 *  We create theme functions to allow users of the module to customize the
 *  look and feel of the output generated in this module
 *
 * @ingroup tripal_analysis
 */
function tripal_analysis_theme() {
  $items = array(
    'tripal_analysis_base' => array(
       'arguments' => array('node' => NULL),
       'template' => 'tripal_analysis_base',
    ),
    'tripal_feature_analyses' => array(
      'template' => 'tripal_feature_analyses',
      'arguments' =>  array('node' => NULL),
    ),
    'tripal_analysis_admin' => array(
      'template' => 'tripal_analysis_admin',
      'arguments' =>  array(NULL),
      'path' => drupal_get_path('module', 'tripal_analysis') . '/theme',
    ),
     'tripal_analysis_properties' => array(
     'arguments' => array('node' => NULL)
    ),
    // Themed Forms
    'chado_analysis_node_form' => array(
      'arguments' => array('form'),
    ),
  );

  return $items;
}
/**
 *
 *
 * @ingroup tripal_analysis
 */
function tripal_analysis_block_info() {
  $blocks['base']['info'] = t('Tripal Analysis Details');
  $blocks['base']['cache'] = BLOCK_NO_CACHE;

  $blocks['featureblast']['info'] = t('Tripal Feature Analyses');
  $blocks['featureblast']['cache'] = BLOCK_NO_CACHE;

  return $blocks;
}

/**
 *
 *
 * @ingroup tripal_analysis
 */
function tripal_analysis_block_view($delta = '') {

  if (user_access('access chado_analysis content') and arg(0) == 'node' and is_numeric(arg(1))) {
    $nid = arg(1);
    $node = node_load($nid);

    $block = array();
    switch ($delta) {
      case 'base':
        $block['subject'] = t('Analysis Details');
        $block['content'] = theme('tripal_analysis_base', $node);
        break;
      case 'tripal_feature_analyses':
        $block['subject'] = t('Feature Analyses');
        $block['content'] = theme('tripal_feature_analyses', $node);
        break;
      default :
    }
    return $block;
  }
}

/**
 *
 * Implements hook_node_view()
 */
function tripal_analysis_node_view($node, $view_mode, $langcode) {
  if ($node->type == 'chado_feature') {
    if ($view_mode == 'search_index') {
       // return results for searching
    }
    if ($view_mode == 'full') {
       // return normal results
       $node->content['tripal_feature_analyses'] = array(
         '#markup' => theme('tripal_feature_analyses',  $node),
       );
    }
  }
}

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


/*
 *
 */
function tripal_analysis_form_alter(&$form, &$form_state, $form_id) {
  if ($form_id == "chado_analysis_node_form") {
  }
}