<?php
// $Id: stormnote.module,v 1.6.4.30 2010-12-16 23:34:10 juliangb Exp $

/**
 * @file
 */

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

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

  return $o;
}

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

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

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

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

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

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

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

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

  global $user;

  $cond = '';
  if (user_access('Storm note: view own')) {
    $cond .= 'n.uid='. $user->uid;
  }
  if (user_access('Storm note: view of user organization')) {
    if (!empty($cond)) $cond .= ' OR ';
    $cond .= 'sno.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 stormnote_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 note: view all', $account)) {
      return '';
    }

    $cond = '';
    if (user_access('Storm note: view own', $account)) {
      $cond .= "${primary_table}.uid=". $account->uid;
    }
    if (user_access('Storm note: view of user organization', $account)) {
      if ($cond) {
        $cond .= ' OR ';
      }
      // If function is called without viewing a note, this variable may not be set.
      // These lines check for that and set the organization node id to zero if not otherwise set.
      if (!isset($account->stormorganization_nid)) {
        $account->stormorganization_nid = 0;
      }
      $cond .= ' sno1.organization_nid='. $account->stormorganization_nid;
    }
    if ($cond) {
      $cond = " WHEN 'stormnote' THEN (SELECT IF($cond,1,0) FROM {stormnote} sno1 WHERE sno1.vid=${primary_table}.vid) ";
    }
    else {
      $cond = " WHEN 'stormnote' THEN 0 ";
    }
  }

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

function stormnote_menu() {
  $items = array();

  $items['storm/notes'] = array(
    'title' => 'Notes',
    'description' => 'Storm notes',
    'page callback' => 'stormnote_list',
    'access arguments' => array('Storm note: access'),
    'type' => MENU_NORMAL_ITEM,
    'file' => 'stormnote.admin.inc',
    'weight' => 7,
  );

  return $items;
}

function stormnote_theme() {
  return array(
    'stormnote_list' => array(
      'file'      => 'stormnote.theme.inc',
      'arguments' => array('header', 'notes'),
    ),
    'stormnote_view' => array(
      'file'      => 'stormnote.theme.inc',
      'arguments' => array('node', 'teaser', 'page'),
    ),
  );
}

function stormnote_node_info() {
  return array(
    'stormnote' => array(
      'name' => t('Note'),
      'module' => 'stormnote',
      'description' => t("A note for Storm."),
      'has_body' => true,
    )
  );
}

function stormnote_content_extra_fields($type_name) {
  if ($type_name == 'stormnote') {
    return array(
      'group1' => array('label' => 'Organization/Project/Task Group', 'weight' => -20),
    );
  }
}

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

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

function stormnote_stormtask_change($task_nid, $task_title, $task_stepno) {
  $s = "UPDATE {stormnote} SET task_title='%s', task_stepno='%s' WHERE task_nid=%d AND
      (task_title<>'%s' OR task_stepno<>'%s')";
  db_query($s, $task_title, $task_stepno, $task_nid, $task_title, $task_stepno);
}

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

function stormnote_stormtask_change_hierarchy($task_nid, $organization_nid, $organization_title, $project_nid, $project_title) {
  $s = "UPDATE {stormnote} SET organization_nid=%d, organization_title='%s', project_nid=%d, project_title='%s' WHERE task_nid=%d";
  db_query($s, $organization_nid, $organization_title, $project_nid, $project_title, $task_nid);
}

function stormnote_form(&$node) {
  $breadcrumb = array();
  $breadcrumb[] = l(t('Storm'), 'storm');
  $breadcrumb[] = l(t('Notes'), 'storm/notes');
  drupal_set_breadcrumb($breadcrumb);

  if (arg(1)=='add') {
    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 note 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->task_nid) {
      $node->task_nid = $_GET['task_nid'];
      $t = node_load($node->task_nid);
      $node->organization_nid = $t->organization_nid;
      $node->project_nid = $t->project_nid;
      // $project_access deals with the case whereby the project could be blank, hence access rules not required
      $project_access = $node->project_nid ? stormproject_access('view', $node->project_nid) : TRUE;
      if (!stormorganization_access('view', $node->organization_nid) || !stormproject_access('view', $node->project_nid)) {
        drupal_set_message(t("You cannot add a note for this task, as you do not have access to view the both the organization and project's profile"));
        drupal_goto('node/'. $node->task_nid);
      }
    }

    if (isset($_SESSION['stormnote_list_filter']['organization_nid']) && !$node->organization_nid) {
      $node->organization_nid = $_SESSION['stormnote_list_filter']['organization_nid'];
    }
    if (isset($_SESSION['stormnote_list_filter']['project_nid']) && !$node->project_nid) {
      $node->project_nid = $_SESSION['stormnote_list_filter']['project_nid'];
    }
    if (isset($_SESSION['stormnote_list_filter']['task_nid']) && !$node->task_nid) {
      $node->task_nid = $_SESSION['stormnote_list_filter']['task_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);

  $form['group1'] = array(
    '#type' => 'markup',
    '#theme' => 'storm_form_group',
    '#weight' => module_exists('content') ? content_extra_field_weight($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] = $organization->title;
    if (!isset($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', '', true, '-')"),
  );

  $s = "SELECT n.nid, n.title FROM {node} n INNER JOIN {stormproject} spr ON spr.vid=n.vid WHERE spr.organization_nid=%d AND n.status=1 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;
  }
  $form['group1']['project_nid'] = array(
    '#type' => 'select',
    '#title' => t('Project'),
    '#default_value' => isset($node->project_nid) ? $node->project_nid : NULL,
    '#options' => array(0 => '-') + $projects,
    '#process' => array('storm_dependent_select_process'),
    '#attributes' => array('onchange' => "stormtask_project_tasks('edit-organization-nid', this, 'edit-task-nid', '', true, '-')"),
  );

  $tree = isset($node->project_nid) ? _stormtask_get_tree($node->project_nid) : array();
  $tasks = _stormtask_plain_tree($tree);
  $form['group1']['task_nid'] = array(
    '#type' => 'select',
    '#title' => t('Task'),
    '#default_value' => isset($node->task_nid) ? $node->task_nid : NULL,
    '#options' => array(0 => '-') + $tasks,
    '#process' => array('storm_dependent_select_process'),
  );

  $form['title'] = array(
    '#type' => 'textfield',
    '#title' => check_plain($type->title_label),
    '#required' => TRUE,
    '#default_value' => $node->title,
    '#weight' => module_exists('content') ? content_extra_field_weight($node->type, 'title') : -16,
  );

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

  return $form;
}

function stormnote_insert($node) {
  _stormnote_beforesave($node);

  db_query("INSERT INTO {stormnote}
           (vid, nid,
           organization_nid, organization_title,
           project_nid, project_title,
           task_nid, task_title
           ) VALUES
           (%d, %d,
           %d, '%s',
           %d, '%s',
           %d, '%s'
           )",
            $node->vid, $node->nid,
            $node->organization_nid, $node->organization_title,
            $node->project_nid, $node->project_title,
            $node->task_nid, $node->task_title
            );
}

function stormnote_update($node) {
  _stormnote_beforesave($node);

  if ($node->revision) {
    stormnote_insert($node);
  }
  else {
    db_query("UPDATE {stormnote} SET
            organization_nid=%d, organization_title='%s',
            project_nid=%d, project_title='%s',
            task_nid=%d, task_title='%s'
            WHERE vid = %d",
            $node->organization_nid, $node->organization_title,
            $node->project_nid, $node->project_title,
            $node->task_nid, $node->task_title,
            $node->vid);
  }
}

function _stormnote_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 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);
  $node->project_title = isset($p->title) ? $p->title : '';

  $s = "SELECT n.title FROM {node} n INNER JOIN {stormtask} p ON n.nid=p.nid
        WHERE type='stormtask' AND n.nid=%d";
  $r = db_query($s, $node->task_nid);
  $t = db_fetch_object($r);
  $node->task_title = isset($t->title) ? $t->title : '';
}

function stormnote_nodeapi(&$node, $op, $teaser, $page) {
  switch ($op) {
    case 'delete revision':
      // Notice that we're matching a single revision based on the node's vid.
      db_query('DELETE FROM {stormnote} WHERE vid = %d', $node->vid);
      break;
  }
}

function stormnote_delete($node) {
  db_query('DELETE FROM {stormnote} WHERE nid = %d', $node->nid);
}

function stormnote_load($node) {
  $additions = db_fetch_object(db_query('SELECT * FROM {stormnote} WHERE vid = %d', $node->vid));
  return $additions;
}

function stormnote_view($node, $teaser = FALSE, $page = FALSE) {
  $breadcrumb = array();
  $breadcrumb[] = l(t('Storm'), 'storm');
  $breadcrumb[] = l(t('Notes'), 'storm/notes');
  drupal_set_breadcrumb($breadcrumb);

  return theme('stormnote_view', $node, $teaser = FALSE, $page = FALSE);
}

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