<?php
// $Id: stormtask.module,v 1.19 2010-02-01 15:18:32 magnity Exp $

/**
 * @file
 */

function stormtask_help($path, $arg) {
  $o = '';

  switch ($path) {
    case "admin/help#stormtask":
      $o = '<p>'. t("Provides task support for Storm") .'</p>';
      break;
  }

  return $o;
}

function stormtask_perm() {
  return array(
    'Storm task: access',
    'Storm task: add',
    'Storm task: delete all',
    'Storm task: delete own',
    'Storm task: delete of user organization',
    'Storm task: edit all',
    'Storm task: edit own',
    'Storm task: edit of user organization',
    'Storm task: view all',
    'Storm task: view own',
    'Storm task: view of user organization',
  );
}

function stormtask_init() {
  $settings = array(
    'storm' => array(
      // D7STORM TODO: call to url triggered error so disabled
      //'project_tasks_url' => url('storm/project_tasks_js/'),
      //'project_assignments_url' => url('storm/project_assignmets_js/'),
    ),
  );
  drupal_add_js($settings, 'setting');
  drupal_add_js(drupal_get_path('module', 'stormtask') .'/stormtask.js', 'module', 'header', FALSE);
}

function stormtask_access($op, $node, $account=NULL) {
  if (empty($account)) {
    global $user;
    $account = $user;
  }

  if (is_numeric($node)) $node = node_load($node);

  if ($op == 'create') {
    return user_access('Storm task: add');
  }

  if ($op == 'delete') {
    if (user_access('Storm task: delete all')) {
      return TRUE;
    }
    else if (user_access('Storm task: delete own') && ($account->uid == $node->uid)) {
      return TRUE;
    }
    else if (user_access('Storm task: delete of user organization') && ($account->stormorganization_nid == $node->organization_nid)) {
      return TRUE;
    }
  }

  if ($op == 'update') {
    if (user_access('Storm task: edit all')) {
      return TRUE;
    }
    else if (user_access('Storm task: edit own') && ($account->uid == $node->uid)) {
      return TRUE;
    }
    else if (user_access('Storm task: edit of user organization') && ($account->stormorganization_nid == $node->organization_nid)) {
      return TRUE;
    }
  }

  if ($op == 'view') {
    if (user_access('Storm task: view all')) {
      return TRUE;
    }
    else if (user_access('Storm task: view own') && ($account->uid == $node->uid)) {
      return TRUE;
    }
    else if (user_access('Storm task: view of user organization') && ($account->stormorganization_nid == $node->organization_nid)) {
      return TRUE;
    }
  }
  return FALSE;
}

function stormtask_access_sql($sql, $where = array()) {
  if (user_access('Storm task: view all')) {
    $where[] = "'storm_access'='storm_access'";
    return storm_rewrite_sql($sql, $where);
  }

  global $user;

  $cond = '';
  if (user_access('Storm task: view own')) {
    $cond .= 'n.uid='. $user->uid;
  }
  if (user_access('Storm task: view of user organization')) {
    if (!empty($cond)) $cond .= ' OR ';
    $cond .= 'sta.organization_nid='. $user->stormorganization_nid;
  }
  if (empty($cond)) $cond = '0=1';
  $where[] = $cond;

  $where[] = "'storm_access'='storm_access'";
  return storm_rewrite_sql($sql, $where);
}

function stormtask_storm_rewrite_where_sql($query, $primary_table, $account) {
  static $conds = array();

  if ($conds[$primary_table][$account->uid]) {
    return $conds[$primary_table][$account->uid];
  }

  if (preg_match("/'storm_access'='storm_access'/", $query)) {
    $cond = '';
  }
  else {
    if (user_access('Storm task: view all', $account)) {
      return '';
    }

    $cond = '';
    if (user_access('Storm task: view own', $account)) {
      $cond .= " ${primary_table}.uid=". $account->uid;
    }
    if (user_access('Storm task: view of user organization', $account)) {
      if ($cond) {
        $cond .= ' OR ';
      }
      // If function is called without viewing a task, this variable may not be set.
      // These lines check for that and set the organization node id to zero if not otherwise set.
      if (!isset($account->stormorganization_nid)) {
        $account->stormorganization_nid = 0;
      }
      $cond .= ' sta1.organization_nid='. $account->stormorganization_nid;
    }
    if ($cond) {
      $cond = " WHEN 'stormtask' THEN (SELECT IF($cond,1,0) FROM {stormtask} sta1 WHERE sta1.vid=${primary_table}.vid) ";
    }
    else {
      $cond = " WHEN 'stormtask' THEN 0 ";
    }
  }

  $conds[$primary_table][$account->uid] = $cond;
  return $cond;
}

function stormtask_menu() {
  $items['node/%node/tasks'] = array(
    'title' => 'Tasks',
    'page callback' => 'stormtask_tasks',
    'page arguments' => array(1),
    'access callback' => '_stormtask_tasks_access',
    'access arguments' => array(1),
    'file' => 'stormtask.admin.inc',
    'type' => MENU_LOCAL_TASK,
    'weight' => 4
  );
  
  $items['storm/project_tasks_js/%'] = array(
    'title' => 'Tasks',
    'page callback' => '_stormtask_project_tasks_js',
    'page arguments' => array(2),
    'access arguments' => array('Storm task: access'),
    'file' => 'stormtask.admin.inc',
    'type' => MENU_CALLBACK,
  );
  
  $items['storm/project_assignments_js/%'] = array(
    'title' => 'Assignments',
    'page callback' => '_stormtask_project_assignments_js',
    'page arguments' => array(2, 3),
    'access arguments' => array('Storm task: access'),
    'file' => 'stormtask.admin.inc',
    'type' => MENU_CALLBACK,
  );
  
  $items['admin/config/system/storm/task'] = array(
    'title' => 'Tasks',
    'description' => 'Storm Task Administration Page',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('stormtask_admin_settings'),
    'access arguments' => array('Storm: access administration pages'),
    'type' => MENU_LOCAL_TASK,
  );

  return $items;
}


function stormtask_admin_settings() {
  $form = array();
  
  $form['stormtask_enable_ganttchart'] = array(
    '#type' => 'checkbox',
    '#title' => t('Enable Gantt Charts (experimental feature)'),
    '#default_value' => variable_get('stormtask_enable_ganttchart', False),
    //'#description' => t('First get jsgantt.zip from http://jsgantt.com and put jsgantt.js andf jsgantt.css in directory   <i>sites/all/libraries/jsgantt</i> then enable this checkbox.'),
  );

  /*$form['stormtask_jsgantt_location'] = array(
    '#type' => 'textfield',
    '#title' => t('Location of jsgantt library'),
    '#default_value' => variable_get('stormtask_jsgantt_location', t('sites/all/libraries/jsgantt')),
    '#description' => t('The directory that contains the jsgantt library ( sites/all/libraries/jsgantt is recommended )'),
    '#size' => 50,
    '#after_build' => array('jsgantt_check_directory'),
  );*/


  $form['stormtask_jsgantt_options'] = array(
    '#type' => 'checkboxes',
    '#title' => t('Chart display options'),
    '#default_value' => variable_get('stormtask_jsgantt_options', array('ShowStartDate','ShowEndDate','ShowDur')),
    '#options' => array(
      'ShowStartDate' => t('Show Start Date'),
      'ShowEndDate' => t('Show End Date'),
      'ShowDur' => t('Show Duration'),
    ),
    '#description' => t('Choose display options for gantt chart.'),
  );


  $form['stormtask_jsgantt_color'] = array(
    '#type' => 'textfield',
    '#title' => t('Gantt chart default color'),
    '#default_value' => variable_get('stormtask_jsgantt_color', '666666'),
    '#description' => t('Enter default color for gantt chart bars.'),
    '#size' => 6,
  );
  $form['stormtask_jsgantt_color_completed'] = array(
    '#type' => 'textfield',
    '#title' => t('Gantt chart "completed" color'),
    '#default_value' => variable_get('stormtask_jsgantt_color_completed', '0DFF24'),
    '#description' => t('Enter "completed" color for gantt chart bars.'),
    '#size' => 6,
  );
  $form['stormtask_jsgantt_color_in_progress'] = array(
    '#type' => 'textfield',
    '#title' => t('Gantt chart "in progress" color'),
    '#default_value' => variable_get('stormtask_jsgantt_color_in_progress', '00CCFF'),
    '#description' => t('Enter "in progress" color for gantt chart bars.'),
    '#size' => 6,
  );
  $form['stormtask_jsgantt_color_on_hold'] = array(
    '#type' => 'textfield',
    '#title' => t('Gantt chart "on hold" color'),
    '#default_value' => variable_get('stormtask_jsgantt_color_on_hold', 'FFF60D'),
    '#description' => t('Enter "on hold" color for gantt chart bars.'),
    '#size' => 6,
  );
  $form['stormtask_jsgantt_color_overdue'] = array(
    '#type' => 'textfield',
    '#title' => t('Gantt chart "overdue" color'),
    '#default_value' => variable_get('stormtask_jsgantt_color_overdue', 'FF0D0D'),
    '#description' => t('Enter "overdue" color for gantt chart bars.'),    '#size' => 6,
  );

  return system_settings_form($form);
}

function jsgantt_check_directory($form_element) {
  $file = $form_element['#value']."/jsgantt.js";
  if (!file_exists($file)){
     form_set_error($form_element['#name'], t('The file %file does not exist.', array('%file' => $file)));
  }
  return $form_element;
}


function stormtask_theme() {
  return array(
    'stormtask_list' => array(
      'file'      => 'stormtask.theme.inc',
      'arguments' => array('header', 'tasks'),
    ),
    'stormtask_tasks' => array(
      'file'      => 'stormtask.theme.inc',
      'arguments' => array('form'),
    ),
    'stormtask_view' => array(
      'file'      => 'stormtask.theme.inc',
      'arguments' => array('node', 'teaser', 'page'),
    ),
  );
}

function stormtask_node_info() {
  return array(
    'stormtask' => array(
      'name' => t('Task'),
      'module' => 'stormtask',
      'description' => t("A task for Storm."),
      'title_label' => t("Title"),
      'body_label' => t("Description"),
    )
  );
}

function stormtask_content_extra_fields($type_name) {
  if ($type_name == 'stormtask') {
    return array(
      'group1' => array('label' => 'Organization/Project/Task/Weight/Step Group', 'weight' => -20),
      'group2' => array('label' => 'Category/Status/Priority Group', 'weight' => -19),
      'group3' => array('label' => 'Date/Duration Group', 'weight' => -18),
      'group4' => array('label' => 'Price Group', 'weight' => -17),
    );
  }
}

function stormtask_stormorganization_change($organization_nid, $organization_title) {
  $s = "UPDATE {stormtask} SET organization_title='%s' WHERE organization_nid=%d AND organization_title <> '%s'";
  db_query($s, $organization_title, $organization_nid, $organization_title);
}

function stormtask_stormproject_change($project_nid, $project_title) {
  $s = "UPDATE {stormtask} SET project_title='%s' WHERE project_nid=%d AND project_title <> '%s'";
  db_query($s, $project_title, $project_nid, $project_title);
}

function stormtask_stormproject_change_hierarchy($project_nid, $organization_nid, $organization_title) {
  $s = "UPDATE {stormtask} SET organization_nid=%d, organization_title='%s' WHERE project_nid=%d";
  db_query($s, $organization_nid, $organization_title, $project_nid);
}

function stormtask_form(&$node) {
  $breadcrumb = array();
  $breadcrumb[] = l(t('Storm'), 'storm');

  if (array_key_exists('project_nid', $_GET)) {
    $breadcrumb[] = l(t('Projects'), 'storm/projects');
    $project = node_load($_GET['project_nid']);
    $breadcrumb[] = l(t('Project : !project', array('!project' => $project->title)), 'node/'. $project->nid);
    $breadcrumb[] = l(t('Tasks'), 'node/'. $project->nid .'/tasks');
  }
  else {
    $breadcrumb[] = l(t('Tasks'), 'storm/tasks');
  }

  drupal_set_breadcrumb($breadcrumb);

  if (arg(1)=='add') {
    $node->datebegin = time();
    $node->dateend = time();

    if (array_key_exists('organization_nid', $_GET) && !$node->organization_nid) {
      $node->organization_nid = $_GET['organization_nid'];
    }
    if (array_key_exists('project_nid', $_GET) && !$node->project_nid) {
      $node->project_nid = $_GET['project_nid'];
      $p = node_load($node->project_nid);
      $node->organization_nid = $p->organization_nid;
      if (!stormorganization_access('view', $node->organization_nid)) {
        drupal_set_message(t("You cannot add a task for this project, as you do not have access to view the organization's profile"));
        drupal_goto('node/'. $node->project_nid);
      }
    }
    if (array_key_exists('task_nid', $_GET) && !$node->parent_nid) {
      // Parent task can be autoloaded by use of ?task_nid=string
      $node->parent_nid = $_GET['task_nid'];
      $t = node_load($node->parent_nid);
      // Ensure that the correct project is loaded
      $node->project_nid = $t->project_nid;
      $node->organization_nid = $t->organization_nid;
      // If no parent project then no need to check access rights, there will always be a parent org.
      $project_access = $node->project_nid ? stormproject_access('view', $node->project_nid) : TRUE;
      if (!$project_access || !stormorganization_access('view', $node->organization_nid)) {
        drupal_set_message(t("You cannot add a task with this parent, as you do not have access to view both the organization and project profiles"));
        drupal_goto('node/'. $node->parent_nid);
      }
    }


    if ($_SESSION['stormtask_list_filter']['organization_nid'] && !$node->organization_nid) {
      $node->organization_nid = $_SESSION['stormtask_list_filter']['organization_nid'];
    }
    if ($_SESSION['stormtask_list_filter']['project_nid'] && !$node->project_nid) {
      $node->project_nid = $_SESSION['stormtask_list_filter']['project_nid'];
    }
    $s_org = "SELECT n.nid, n.title FROM {stormorganization} so INNER JOIN {node} n 
              ON so.nid=n.nid WHERE n.status=1 AND so.isactive=1 AND so.iscustomer=1 AND n.type='stormorganization' ORDER BY n.title";
  }
  else {
    $s_org = "SELECT n.nid, n.title FROM {stormorganization} so INNER JOIN {node} n 
      ON so.nid=n.nid WHERE n.status=1 AND so.iscustomer=1 AND n.type='stormorganization' ORDER BY n.title";
  }

  $type = node_get_types('type', $node);

  $form['#attributes']['class'] = 'stormcomponent_node_form';

  $form['group1'] = array(
    '#type' => 'markup',
    '#theme' => 'storm_form_group',
    '#weight' => module_exists('content') ? content_extra_field_weight($node->type, 'group1') : -20,
  );

  $s_org = stormorganization_access_sql($s_org);
  $s_org = db_rewrite_sql($s_org);
  $r = db_query($s_org);
  $organizations = array();
  while ($organization = db_fetch_object($r)) {
    $organizations[$organization->nid] = $organization->title;
    if (!$node->organization_nid) $node->organization_nid = $organization->nid;
  }
  $form['group1']['organization_nid'] = array(
    '#type' => 'select',
    '#title' => t('Organization'),
    '#default_value' => $node->organization_nid,
    '#options' => $organizations,
    '#required' => true,
    '#attributes' => array('onchange' => "stormtask_organization_project_tasks(this, 'edit-project-nid', 'edit-parent-nid', 'edit-assigned-nid', true, '-')"),
  );

  $s = "SELECT n.nid, n.title FROM {node} AS n INNER JOIN {stormproject} AS spr ON spr.vid=n.vid
  WHERE n.status=1 AND spr.organization_nid=%d AND n.type='stormproject' ORDER BY n.title";
  $s = stormproject_access_sql($s);
  $s = db_rewrite_sql($s);
  $r = db_query($s, $node->organization_nid);
  $projects = array();
  while ($project = db_fetch_object($r)) {
    $projects[$project->nid] = $project->title;
    if (!$node->project_nid) $node->project_nid = $project->nid;
  }
  $form['group1']['project_nid'] = array(
    '#type' => 'select',
    '#title' => t('Project'),
    '#default_value' => $node->project_nid,
    '#options' => $projects,
    '#process' => array('storm_dependent_select_process'),
    '#required' => true,
    '#attributes' => array('onchange' => "stormtask_project_tasks('edit-organization-nid', this, 'edit-parent-nid', 'edit-assigned-nid', true, '-')"),
  );
  
  $form['group1']['project_nid_old'] = array(
    '#type' => 'hidden',
    '#default_value' => $node->project_nid,
  );
  
  $tree = _stormtask_get_tree($node->project_nid);
  $parent_tasks = _stormtask_plain_tree($tree);
  $form['group1']['parent_nid'] = array(
    '#type' => 'select',
    '#title' => t('Parent task'),
    '#default_value' => $node->parent_nid,
    '#options' => array(0 => '-') + $parent_tasks,
    '#process' => array('storm_dependent_select_process'),
  );

  $form['group1']['weight'] = array(
    '#type' => 'weight',
    '#title' => t('Weight'),
    '#default_value' => $node->weight,
  );

  $form['group1']['stepno'] = array(
    '#type' => 'textfield',
    '#title' => t('Step no.'),
    '#size' => 15,
    '#required' => FALSE,
    '#default_value' => $node->stepno,
  );

  $form['title'] = array(
    '#type' => 'textfield',
    '#title' => check_plain($type->title_label),
    '#required' => TRUE,
    '#default_value' => $node->title,
    '#weight' => module_exists('content') ? content_extra_field_weight($node->type, 'title') : -18,
  );

  $form['group2'] = array(
    '#type' => 'markup',
    '#theme' => 'storm_form_group',
    '#weight' => module_exists('content') ? content_extra_field_weight($node->type, 'group2') : -17,
  );

  $taskcategory_list = stormattribute_attributes_bydomain('Task category');
  $form['group2']['taskcategory'] = array(
    '#type' => 'select',
    '#title' => t('Category'),
    '#default_value' => $node->taskcategory,
    '#options' => $taskcategory_list['values'],
  );

  $taskstatus_list = stormattribute_attributes_bydomain('Task status');
  $form['group2']['taskstatus'] = array(
    '#type' => 'select',
    '#title' => t('Status'),
    '#default_value' => $node->taskstatus,
    '#options' => $taskstatus_list['values'],
  );

  $taskpriority_list = stormattribute_attributes_bydomain('Task priority');
  $form['group2']['taskpriority'] = array(
    '#type' => 'select',
    '#title' => t('Priority'),
    '#default_value' => $node->taskpriority,
    '#options' => $taskpriority_list['values'],
  );

  $form['group3'] = array(
    '#type' => 'markup',
    '#theme' => 'storm_form_group',
    '#weight' => module_exists('content') ? content_extra_field_weight($node->type, 'group3') : -16,
  );

  $form['group3']['datebegin'] = array(
    '#type' => 'dateext',
    '#title' => t('Date begin'),
    '#withnull' => true,
    '#default_value' => _storm_gmtimestamp_to_date($node->datebegin),
  );

  $form['group3']['dateend'] = array(
    '#type' => 'dateext',
    '#title' => t('Date end'),
    '#withnull' => true,
    '#default_value' => _storm_gmtimestamp_to_date($node->dateend),
  );

  $durationunit_list = stormattribute_attributes_bydomain('Duration unit');
  $form['group3']['durationunit'] = array(
    '#type' => 'select',
    '#title' => t('Duration unit'),
    '#default_value' => $node->durationunit,
    '#options' => $durationunit_list['values'],
  );

  $form['group3']['duration'] = array(
    '#type' => 'textfield',
    '#title' => t('Duration'),
    '#size' => 20,
    '#default_value' => $node->duration,
  );

  $form['group4'] = array(
    '#type' => 'markup',
    '#theme' => 'storm_form_group',
    '#weight' => module_exists('content') ? content_extra_field_weight($node->type, 'group4') : -16,
  );

  $pricemode_list = stormattribute_attributes_bydomain('Price mode');
  $form['group4']['pricemode'] = array(
    '#type' => 'select',
    '#title' => t('Price mode'),
    '#default_value' => $node->pricemode,
    '#options' => $pricemode_list['values'],
  );

  $form['group4']['price'] = array(
    '#title' => t('Price'),
    '#type' => 'textfield',
    '#size' => 15,
    '#default_value' => $node->price,
  );

  $currency_list = stormattribute_attributes_bydomain('Currency');
  $form['group4']['currency'] = array(
    '#type' => 'select',
    '#title' => t('Price currency'),
    '#default_value' => $node->currency,
    '#options' => $currency_list['values'],
  );
  
  $form['group5'] = array(
    '#type' => 'markup',
    '#theme' => 'storm_form_group',
    '#weight' => module_exists('content') ? content_extra_field_weight($node->type, 'group5') : -16,
  );
  
  $options = storm_get_assignment_options($node->organization_nid, $node->project_nid);

  $form['group5']['assigned_nid'] = array(
    '#type' => 'select',
    '#title' => t('Assigned to'),
    '#options' => $options,
    '#default_value' => $node->assigned_nid,
  );

  if ($type->has_body) {
    $form['body_field'] = node_body_field($node, $type->body_label, $type->min_word_count);
  }

  $form['stepno_old'] = array(
    '#type' => 'hidden',
    '#default_value' => $node->stepno_old,
  );

  $form['title_old'] = array(
    '#type' => 'hidden',
    '#default_value' => $node->title_old,
  );

  return $form;
}


function stormtask_form_alter(&$form, $form_state, $form_id) {
  if (module_exists('date_api') && module_exists('date_popup')) {
    if ($form_id == 'stormtask_node_form') {
      $node = $form['#node'];
      $form['group3']['datebegin'] = array(
        '#type' => 'date_popup',
        '#title' => t('Date begin'),
        '#date_format' =>  'Y-m-d',
        '#default_value' => date('Y-m-d',$node->datebegin),
      );

      $form['group3']['dateend'] = array(
        '#type' => 'date_popup',
        '#title' => t('Date end'),
        '#date_format' =>  'Y-m-d',
        '#default_value' => date('Y-m-d',$node->dateend),
      );
    }
  }
}


function stormtask_insert($node) {
  _stormtask_beforesave($node);
  db_query("INSERT INTO {stormtask}
    (vid, nid, stepno, taskcategory, taskstatus, taskpriority,
    organization_nid, organization_title,
    project_nid, project_title, parent_nid, weight,
    datebegin, dateend, durationunit, duration, pricemode, price, currency)
    VALUES
    (%d, %d, '%s', '%s', '%s', '%s',
    %d, '%s',
    %d, '%s', %d, %d, %d, %d, '%s', %f, '%s', %f, '%s')",
    $node->vid, $node->nid, $node->stepno, $node->taskcategory, $node->taskstatus, $node->taskpriority,
    $node->organization_nid, $node->organization_title, $node->project_nid, $node->project_title,
    $node->parent_nid, $node->weight, $node->datebegin, $node->dateend, $node->durationunit, $node->duration,
    $node->pricemode, $node->price, $node->currency);
}

function stormtask_update($node) {
  $s = "SELECT n.title FROM {node} n INNER JOIN {stormorganization} o ON n.nid=o.nid
        WHERE type='stormorganization' AND n.nid=%d";
  $r = db_query($s, $node->organization_nid);
  $o = db_fetch_object($r);
  $node->organization_title = $o->title;
  
  $s = "SELECT n.title, p.organization_title FROM {node} n INNER JOIN {stormproject} p ON n.nid=p.nid
        WHERE type='stormproject' AND n.nid=%d";
  $r = db_query($s, $node->project_nid);
  $p = db_fetch_object($r);
  $node->project_title = $p->title;
  
  if ($node->project_nid != $node->project_nid_old) {
    module_invoke_all('stormtask_change_hierarchy', $node->nid, $node->organization_nid, $node->organization_title, $node->project_nid, $node->project_title);
  }  
  
  // if this is a new node or we're adding a new revision,
  if ($node->revision) {
    stormtask_insert($node);
  }
  else {
    _stormtask_beforesave($node);
    db_query("UPDATE {stormtask} SET
      stepno='%s', taskcategory='%s', taskstatus='%s', taskpriority='%s',
      organization_nid=%d, organization_title='%s',
      project_nid=%d, project_title='%s',
      parent_nid=%d, weight=%d, datebegin=%d, dateend=%d, durationunit='%s', duration=%f,
      pricemode='%s', price=%f, currency='%s' 
      WHERE vid = %d",
      $node->stepno, $node->taskcategory, $node->taskstatus, $node->taskpriority,
      $node->organization_nid, $node->organization_title,
      $node->project_nid, $node->project_title,
      $node->parent_nid,
      $node->weight, $node->datebegin, $node->dateend, $node->durationunit, $node->duration, 
      $node->pricemode, $node->price, $node->currency, $node->vid);
    if (($node->title != $node->title_old) || ($node->stepno != $node->stepno_old)) {
      module_invoke_all('stormtask_change', $node->nid, $node->stepno, $node->title);
    }
  }
}

function _stormtask_beforesave(&$node) {
  $s = "SELECT n.title FROM {node} n INNER JOIN {stormorganization} o ON n.nid=o.nid
        WHERE type='stormorganization' AND n.nid=%d";
  $r = db_query($s, $node->organization_nid);
  $o = db_fetch_object($r);
  $node->organization_title = $o->title;
  
  $s = "SELECT n.title, p.organization_title FROM {node} n INNER JOIN {stormproject} p ON n.nid=p.nid
        WHERE type='stormproject' AND n.nid=%d";
  $r = db_query($s, $node->project_nid);
  $p = db_fetch_object($r);
  $node->project_title = $p->title;
  
  // Allow use of comma when inputting numerical values - str_replace with period decimal
  $node->duration = str_replace(',', '.', $node->duration);
  $node->price = str_replace(',', '.', $node->price);
  
  if (is_array($node->datebegin)){
      $node->datebegin = _storm_date_to_gmtimestamp($node->datebegin);
  }
  else {
      $node->datebegin = strtotime($node->datebegin);
  }
  
  if (is_array($node->dateend)){
      $node->dateend = _storm_date_to_gmtimestamp($node->dateend);
  }
  else {
      $node->dateend = strtotime($node->dateend);
  }
}

function stormtask_nodeapi(&$node, $op, $teaser, $page) {
  switch ($op) {
    case 'prepare':
      if(!$node->nid) {
        $node->iscustomer = 1;
        $node->isactive = 1;

        $taskcategory_list = stormattribute_attributes_bydomain('Task category');
        $node->taskcategory = $taskcategory_list['default'];

        $taskstatus_list = stormattribute_attributes_bydomain('Task status');
        $node->taskstatus = $taskstatus_list['default'];

        $taskpriority_list = stormattribute_attributes_bydomain('Task priority');
        $node->taskpriority = $taskpriority_list['default'];

        $durationunit_list = stormattribute_attributes_bydomain('Duration unit');
        $node->durationunit = $durationunit_list['default'];

        $pricemode_list = stormattribute_attributes_bydomain('Price mode');
        $node->pricemode = $pricemode_list['default'];

        $currency_list = stormattribute_attributes_bydomain('Currency');
        $node->currency = $currency_list['default'];
      }
      break;
    case 'delete revision':
      // Notice that we're matching a single revision based on the node's vid.
      db_query('DELETE FROM {stormtask} WHERE vid = %d', $node->vid);
      break;
  }
}

function stormtask_delete($node) {
  // Notice that we're matching all revision, by using the node's nid.
  db_query('DELETE FROM {stormtask} WHERE nid = %d', $node->nid);
}

function stormtask_load($node) {
  $additions = db_fetch_object(db_query('SELECT * FROM {stormtask} WHERE vid = %d', $node->vid));
  $additions->stepno_old = $node->stepno;
  $additions->title_old = $node->title;
  return $additions;
}

function stormtask_validate(&$node) {
  if (($node->nid == $node->parent_nid) && $node->parent_nid) {
    form_set_error('parent_nid', t('Impossible to assign itself as parent.'));
  }
}

function stormtask_view($node, $teaser = FALSE, $page = FALSE) {
  $breadcrumb = array();
  $breadcrumb[] = l(t('Storm'), 'storm');
  $breadcrumb[] = l(t('Tasks'), 'storm/tasks');
  drupal_set_breadcrumb($breadcrumb);

  return theme('stormtask_view', $node, $teaser, $page);
}

function _stormtask_tasks_access($node=NULL) {
  if ($node == NULL) return FALSE;
  if ($node->type == 'stormproject' && user_access('Storm task: access')) return TRUE;
  return FALSE;
}

function _stormtask_get_tree($project_nid, $parent_nid = 0, $depth = -1, $max_depth = NULL, $where = NULL, $args = array()) {
  static $children, $parents, $tasks;

  $depth++;
  // We cache trees, so it's not CPU-intensive to call get_tree() on a term
  // and its children, too.
  if (!isset($children[$project_nid])) {
    $children[$project_nid] = array();

    $s = "SELECT n.title, n.uid, sta.* FROM {node} AS n INNER JOIN {stormtask} AS sta
    ON n.vid=sta.vid WHERE n.status=1 AND n.type='stormtask' AND sta.project_nid=%d
    ORDER BY sta.weight";
    $s = stormtask_access_sql($s, $where);
    $s = db_rewrite_sql($s);
    $args = array_merge($args, array($project_nid));
    $r = db_query($s, $args);
    while ($task = db_fetch_object($r)) {
      $children[$project_nid][$task->parent_nid][] = $task->nid;
      $parents[$project_nid][$task->nid][] = $task->parent_nid;
      $tasks[$project_nid][$task->nid] = $task;
    }
  }

  $max_depth = (is_null($max_depth)) ? count($children[$project_nid]) : $max_depth;
  if ($children[$project_nid][$parent_nid]) {
    foreach ($children[$project_nid][$parent_nid] as $child_nid) {
      if ($max_depth > $depth) {
        $task = drupal_clone($tasks[$project_nid][$child_nid]);
        $task->depth = $depth;
        $task->parents = $parents[$project_nid][$child_nid];
        $tree[] = $task;
        if ($children[$project_nid][$child_nid]) {
          $tree = array_merge($tree, _stormtask_get_tree($project_nid, $child_nid, $depth, $max_depth, $where, $args));
        }
      }
    }
  }
  return $tree ? $tree : array();
}

function _stormtask_plain_tree($tree) {
  $rows = array();
  foreach ($tree as $item) {
    $nid = $item->nid;
    $title = $item->title;
    if ($item->stepno) $title = $item->stepno .' '. $title;
    if ($nid) $rows[$nid] = str_repeat('--', $item->depth) .' '. $title;
  }
  return $rows;
}

function stormtask_views_api() {
  return array(
    'api' => 2,
    'path' => drupal_get_path('module', 'stormtask'),
  );
}