X-Git-Url: http://wagnertech.de/git?a=blobdiff_plain;f=WEB-INF%2Flib%2FttTimesheetHelper.class.php;h=17119edace1c8eb78ffaca461bc0c4a060d2227d;hb=237f5fae68a9410971ce1c4895a07fe2fa0fbd52;hp=056fc6859ab3c44c4f2666d879526f850999c3ff;hpb=a3d07d9fe0c01738c69c6ea37220f3feb4395912;p=timetracker.git

diff --git a/WEB-INF/lib/ttTimesheetHelper.class.php b/WEB-INF/lib/ttTimesheetHelper.class.php
index 056fc685..17119eda 100644
--- a/WEB-INF/lib/ttTimesheetHelper.class.php
+++ b/WEB-INF/lib/ttTimesheetHelper.class.php
@@ -27,24 +27,23 @@
 // +----------------------------------------------------------------------+
 
 import('ttUserHelper');
-import('ttGroupHelper');
-import('form.ActionForm');
-import('ttReportHelper');
+import('ttFileHelper');
 
 // Class ttTimesheetHelper is used to help with project related tasks.
 class ttTimesheetHelper {
 
   // The getTimesheetByName looks up a project by name.
-  static function getTimesheetByName($name, $user_id) {
+  static function getTimesheetByName($name) {
     global $user;
     $mdb2 = getConnection();
 
+    $user_id = $user->getUser();
     $group_id = $user->getGroup();
     $org_id = $user->org_id;
 
     $sql = "select id from tt_timesheets".
       " where group_id = $group_id and org_id = $org_id and user_id = $user_id and name = ".$mdb2->quote($name).
-      " and (status = 1 or status = 0)";
+      " and status is not null";
     $res = $mdb2->query($sql);
     if (!is_a($res, 'PEAR_Error')) {
       $val = $res->fetchRow();
@@ -54,118 +53,85 @@ class ttTimesheetHelper {
     return false;
   }
 
-  // insert function inserts a new timesheet into database.
-  static function insert($fields)
+  // createTimesheet function creates a new timesheet.
+  static function createTimesheet($fields)
   {
-    // First, we obtain report items.
-
-    // Obtain session bean with report attributes.
-    $bean = new ActionForm('reportBean', new Form('reportForm'));
-    $options = ttReportHelper::getReportOptions($bean);
-    $report_items = ttReportHelper::getItems($options);
-
-    // Prepare ids for time and expense items, at the same time checking
-    // if we can proceed with creating a timesheet.
-    $canCreateTimesheet = true;
-    $first_user_id = null;
-
-    foreach ($report_items as $report_item) {
-      // Check user id.
-      if (!$first_user_id)
-        $first_user_id = $report_item['user_id'];
-      else {
-        if ($report_item['user_id'] != $first_user_id) {
-          // We have items for multiple users.
-          $canCreateTimesheet = false;
-          break;
-        }
-      }
-      // Check timesheet id.
-      if ($report_item['timesheet_id']) {
-        // We have an item already assigned to a timesheet.
-        $canCreateTimesheet = false;
-        break;
-      }
-      if ($report_item['type'] == 1)
-        $time_ids[] = $report_item['id'];
-      elseif ($report_item['type'] == 2)
-        $expense_ids[] = $report_item['id'];
-    }
-    if (!$canCreateTimesheet) return false;
-
-    // Make comma-seperated lists of ids for sql.
-    if ($time_ids)
-      $comma_separated_time_ids = implode(',', $time_ids);
-    if ($expense_ids)
-      $comma_separated_expense_ids = implode(',', $expense_ids);
-
     // Create a new timesheet entry.
     global $user;
     $mdb2 = getConnection();
 
+    $user_id = $user->getUser();
     $group_id = $user->getGroup();
     $org_id = $user->org_id;
 
-    $user_id = $fields['user_id'];
     $client_id = $fields['client_id'];
+    $project_id = $fields['project_id'];
     $name = $fields['name'];
-    $submitter_comment = $fields['comment'];
+    $comment = $fields['comment'];
+
+    $start_date = new DateAndTime($user->date_format, $fields['start_date']);
+    $start = $start_date->toString(DB_DATEFORMAT);
 
-    $sql = "insert into tt_timesheets (user_id, group_id, org_id, client_id, name, submitter_comment)".
-      " values ($user_id, $group_id, $org_id, ".$mdb2->quote($client_id).", ".$mdb2->quote($name).", ".$mdb2->quote($submitter_comment).")";
+    $end_date = new DateAndTime($user->date_format, $fields['end_date']);
+    $end = $end_date->toString(DB_DATEFORMAT);
+
+    $created_part = ', now(), '.$mdb2->quote($_SERVER['REMOTE_ADDR']).', '.$user->id;
+
+    $sql = "insert into tt_timesheets (user_id, group_id, org_id, client_id, project_id, name, comment,".
+      " start_date, end_date, created, created_ip, created_by)".
+      " values ($user_id, $group_id, $org_id, ".$mdb2->quote($client_id).", ".$mdb2->quote($project_id).", ".$mdb2->quote($name).
+      ", ".$mdb2->quote($comment).", ".$mdb2->quote($start).", ".$mdb2->quote($end).$created_part.")";
     $affected = $mdb2->exec($sql);
     if (is_a($affected, 'PEAR_Error'))
       return false;
 
     $last_id = $mdb2->lastInsertID('tt_timesheets', 'id');
 
-    // Associate time items with timesheet.
-    if ($comma_separated_time_ids) {
-      $sql = "update tt_log set timesheet_id = $last_id".
-        " where id in ($comma_separated_time_ids) and group_id = $group_id and org_id = $org_id";
-      $affected = $mdb2->exec($sql);
-      if (is_a($affected, 'PEAR_Error'))
-        return false;
-    }
-
-    // Associate expense items with timesheet.
-    if ($comma_separated_expense_ids) {
-      $sql = "update tt_expense_items set timesheet_id = $last_id".
-        " where id in ($comma_separated_expense_ids) and group_id = $group_id and org_id = $org_id";
-      $affected = $mdb2->exec($sql);
-      if (is_a($affected, 'PEAR_Error'))
-        return false;
-    }
+    // Associate tt_log items with timesheet.
+    if (isset($fields['client'])) $client_id = (int) $fields['client_id'];
+    if (isset($fields['project_id'])) $project_id = (int) $fields['project_id'];
+    // sql parts.
+    if ($client_id) $client_part = " and client_id = $client_id";
+    if ($project_id) $project_part = " and project_id = $project_id";
+
+    $sql = "update tt_log set timesheet_id = $last_id".
+      " where status = 1 $client_part $project_part and timesheet_id is null".
+      " and date >= ".$mdb2->quote($start)." and date <= ".$mdb2->quote($end).
+      " and user_id = $user_id and group_id = $group_id and org_id = $org_id";
+    $affected = $mdb2->exec($sql);
+    if (is_a($affected, 'PEAR_Error'))
+      return false;
 
     return $last_id;
   }
 
   // The getActiveTimesheets obtains active timesheets for a user.
-  static function getActiveTimesheets($user_id)
+  static function getActiveTimesheets()
   {
     global $user;
     $mdb2 = getConnection();
 
+    $user_id = $user->getUser();
     $group_id = $user->getGroup();
     $org_id = $user->org_id;
 
-    // $addPaidStatus = $user->isPluginEnabled('ps');
-    $result = array();
-
-    if ($user->isClient())
-      $client_part = "and ts.client_id = $user->client_id";
+    if ($user->isPluginEnabled('at')) {
+      $filePart = ', if(Sub1.entity_id is null, 0, 1) as has_files';
+      $fileJoin =  " left join (select distinct entity_id from tt_files".
+      " where entity_type = 'timesheet' and group_id = $group_id and org_id = $org_id and status = 1) Sub1".
+      " on (ts.id = Sub1.entity_id)";
+    }
 
-    $sql = "select ts.id, ts.name, ts.client_id, c.name as client_name, ts.submit_status, ts.approval_status from tt_timesheets ts".
-      " left join tt_clients c on (c.id = ts.client_id)".
+    $result = array();
+    $sql = "select ts.id, ts.name, ts.client_id, c.name as client_name,".
+      " ts.submit_status, ts.approve_status $filePart from tt_timesheets ts".
+      " left join tt_clients c on (c.id = ts.client_id) $fileJoin".
       " where ts.status = 1 and ts.group_id = $group_id and ts.org_id = $org_id and ts.user_id = $user_id".
-      " $client_part order by ts.name";
+      " order by ts.name";
     $res = $mdb2->query($sql);
     $result = array();
     if (!is_a($res, 'PEAR_Error')) {
-      $dt = new DateAndTime(DB_DATEFORMAT);
       while ($val = $res->fetchRow()) {
-        //if ($addPaidStatus)
-        //  $val['paid'] = ttTimesheetHelper::isPaid($val['id']);
         $result[] = $val;
       }
     }
@@ -173,31 +139,32 @@ class ttTimesheetHelper {
   }
 
   // The getInactiveTimesheets obtains inactive timesheets for a user.
-  static function getInactiveTimesheets($user_id)
+  static function getInactiveTimesheets()
   {
     global $user;
     $mdb2 = getConnection();
 
+    $user_id = $user->getUser();
     $group_id = $user->getGroup();
     $org_id = $user->org_id;
 
-    // $addPaidStatus = $user->isPluginEnabled('ps');
-    $result = array();
-
-    if ($user->isClient())
-      $client_part = "and ts.client_id = $user->client_id";
+    if ($user->isPluginEnabled('at')) {
+      $filePart = ', if(Sub1.entity_id is null, 0, 1) as has_files';
+      $fileJoin =  " left join (select distinct entity_id from tt_files".
+      " where entity_type = 'timesheet' and group_id = $group_id and org_id = $org_id and status = 1) Sub1".
+      " on (ts.id = Sub1.entity_id)";
+    }
 
-    $sql = "select ts.id, ts.name, ts.client_id, c.name as client_name, ts.submit_status, ts.approval_status from tt_timesheets ts".
-      " left join tt_clients c on (c.id = ts.client_id)".
+    $result = array();
+    $sql = "select ts.id, ts.name, ts.client_id, c.name as client_name,".
+      " ts.submit_status, ts.approve_status $filePart from tt_timesheets ts".
+      " left join tt_clients c on (c.id = ts.client_id) $fileJoin".
       " where ts.status = 0 and ts.group_id = $group_id and ts.org_id = $org_id and ts.user_id = $user_id".
-      " $client_part order by ts.name";
+      " order by ts.name";
     $res = $mdb2->query($sql);
     $result = array();
     if (!is_a($res, 'PEAR_Error')) {
-      $dt = new DateAndTime(DB_DATEFORMAT);
       while ($val = $res->fetchRow()) {
-        //if ($addPaidStatus)
-        //  $val['paid'] = ttTimesheetHelper::isPaid($val['id']);
         $result[] = $val;
       }
     }
@@ -209,13 +176,16 @@ class ttTimesheetHelper {
     global $user;
     $mdb2 = getConnection();
 
+    $user_id = $user->getUser();
     $group_id = $user->getGroup();
     $org_id = $user->org_id;
 
-    if ($user->isClient()) $client_part = "and client_id = $user->client_id";
-
-    $sql = "select * from tt_timesheets".
-      " where id = $timesheet_id and group_id = $group_id and org_id = $org_id $client_part and status is not null";
+    $sql = "select ts.*, u.name as user_name, c.name as client_name,".
+      " p.name as project_name from tt_timesheets ts".
+      " left join tt_users u on (ts.user_id = u.id)".
+      " left join tt_clients c on (ts.client_id = c.id)".
+      " left join tt_projects p on (ts.project_id = p.id)".
+      " where ts.id = $timesheet_id and ts.user_id = $user_id and ts.group_id = $group_id and ts.org_id = $org_id and ts.status is not null";
     $res = $mdb2->query($sql);
     if (!is_a($res, 'PEAR_Error')) {
       if ($val = $res->fetchRow())
@@ -229,24 +199,30 @@ class ttTimesheetHelper {
     global $user;
     $mdb2 = getConnection();
 
+    // Delete associated files.
+    if ($user->isPluginEnabled('at')) {
+      import('ttFileHelper');
+      global $err;
+      $fileHelper = new ttFileHelper($err);
+      if (!$fileHelper->deleteEntityFiles($timesheet_id, 'timesheet'))
+        return false;
+    }
+
+    $user_id = $user->getUser();
     $group_id = $user->getGroup();
     $org_id = $user->org_id;
 
-    // Handle time records.
+    // Handle tt_log records.
     $sql = "update tt_log set timesheet_id = null".
-      " where timesheet_id = $timesheet_id and group_id = $group_id and org_id = $org_id";
+      " where timesheet_id = $timesheet_id and user_id = $user_id and group_id = $group_id and org_id = $org_id";
     $affected = $mdb2->exec($sql);
     if (is_a($affected, 'PEAR_Error')) return false;
 
-    // Handle expense items.
-    $sql = "update tt_expense_items set timesheet_id = null".
-      " where timesheet_id = $timesheet_id and group_id = $group_id and org_id = $org_id";
-    $affected = $mdb2->exec($sql);
-    if (is_a($affected, 'PEAR_Error')) return false;
+    $modified_part = ', modified = now(), modified_ip = '.$mdb2->quote($_SERVER['REMOTE_ADDR']).', modified_by = '.$user->id;
 
     // Delete timesheet.
-    $sql = "update tt_timesheets set status = null".
-      " where id = $timesheet_id and group_id = $group_id and org_id = $org_id";
+    $sql = "update tt_timesheets set status = null".$modified_part.
+      " where id = $timesheet_id and user_id = $user_id and group_id = $group_id and org_id = $org_id";
     $affected = $mdb2->exec($sql);
     return (!is_a($affected, 'PEAR_Error'));
   }
@@ -256,42 +232,357 @@ class ttTimesheetHelper {
     global $user;
     $mdb2 = getConnection();
 
+    $user_id = $user->getUser();
     $group_id = $user->getGroup();
     $org_id = $user->org_id;
 
     $timesheet_id = $fields['id']; // Timesheet we are updating.
     $name = $fields['name']; // Timesheet name.
-    $submitter_comment = $fields['submitter_comment'];
-    $status = $fields['status']; // Project status.
+    $comment = $fields['comment'];
+    $status = $fields['status']; // Timesheet status.
+
+    $modified_part = ', modified = now(), modified_ip = '.$mdb2->quote($_SERVER['REMOTE_ADDR']).', modified_by = '.$user->id;
 
-    $sql = "update tt_timesheets set name = ".$mdb2->quote($name).", submitter_comment = ".$mdb2->quote($submitter_comment).
+    $sql = "update tt_timesheets set name = ".$mdb2->quote($name).
+      ", comment = ".$mdb2->quote($comment).$modified_part.
       ", status = ".$mdb2->quote($status).
-      " where id = $timesheet_id and group_id = $group_id and org_id = $org_id";
+      " where id = $timesheet_id and user_id = $user_id and group_id = $group_id and org_id = $org_id";
     $affected = $mdb2->exec($sql);
     return (!is_a($affected, 'PEAR_Error'));
   }
 
-  // isUserValid function is used during access checks and determines whether user id, passed in post, is valid
-  // in current context.
-  static function isUserValid($user_id) {
-    // We have to cover several situations.
-    //
-    // 1) User is a client.
-    // 2) User with view_all_timesheets rights.
-    // 3) User with view_timesheets rights.
+  // getReportOptions prepares $options array to be used with ttReportHelper
+  // to obtain items for timesheet view.
+  static function getReportOptions($timesheet) {
+    global $user;
+    $group_by_client = $user->isPluginEnabled('cl') && !$timesheet['client_id'];
+    $trackingMode = $user->getTrackingMode();
+    $group_by_project = MODE_PROJECTS == $trackingMode || MODE_PROJECTS_AND_TASKS == $trackingMode;
+
+    $options['timesheet_id'] = $timesheet['id'];
+    $options['group_by1'] = 'date';
+    if ($group_by_client || $group_by_project) {
+      $options['group_by2'] = $group_by_client ? 'client' : 'project';
+    }
+    if ($options['group_by2'] && $options['group_by2'] != 'project' && $group_by_project) {
+      $options['group_by3'] = 'project';
+    }
+    return $options;
+  }
 
+  // getApprovers obtains a list of users who can approve a timesheet for a given user
+  // and also have an email to receive a notification about it.
+  static function getApprovers() {
     global $user;
+    $mdb2 = getConnection();
 
-    // Step 1.
-    // A client must have view_client_timesheets and
-    // aser must be assigned to one of client projects.
-    if ($user->isClient()) {
-      if (!$user->can('view_client_timesheets'))
-        return false;
-      $valid_users = ttGroupHelper::getUsersForClient($user->client_id);
-      $v = 2;
+    $user_id = $user->getUser();
+    $group_id = $user->getGroup();
+    $org_id = $user->org_id;
+
+    $approvers = array();
+    $rank = ttUserHelper::getUserRank($user_id);
+    $sql = "select u.id, u.name, u.email".
+      " from tt_users u".
+      " left join tt_roles r on (r.id = u.role_id)".
+      " where u.status = 1 and u.email is not null and u.group_id = $group_id and u.org_id = $org_id".
+      " and (r.rank > $rank and r.rights like '%approve_timesheets%')";
+    $res = $mdb2->query($sql);
+    if (!is_a($res, 'PEAR_Error')) {
+      while ($val = $res->fetchRow()) {
+        $approvers[] = $val;
+      }
     }
+    return $approvers;
+  }
+
+  // getApprover obtains approver properties such as name and email.
+  static function getApprover($user_id) {
+    global $user;
+    $mdb2 = getConnection();
+
+    $group_id = $user->getGroup();
+    $org_id = $user->org_id;
+
+    $rank = ttUserHelper::getUserRank($user->getUser());
+    $sql = "select u.name, u.email".
+      " from tt_users u".
+      " left join tt_roles r on (r.id = u.role_id)".
+      " where u.id = $user_id and u.status = 1 and u.email is not null and u.group_id = $group_id and u.org_id = $org_id".
+      " and (r.rank > $rank and r.rights like '%approve_timesheets%')";
+    $res = $mdb2->query($sql);
+    if (!is_a($res, 'PEAR_Error')) {
+      if ($val = $res->fetchRow()) {
+        return $val;
+      }
+    }
+    return false;
+  }
+
+  // markSubmitted marks a timesheet as submitted.
+  static function markSubmitted($fields) {
+    global $user;
+    $mdb2 = getConnection();
+
+    $user_id = $user->getUser();
+    $group_id = $user->getGroup();
+    $org_id = $user->org_id;
+
+    $modified_part = ', modified = now(), modified_ip = '.$mdb2->quote($_SERVER['REMOTE_ADDR']).', modified_by = '.$user->id;
+
+    $timesheet_id = $fields['timesheet_id'];
+    $sql = "update tt_timesheets set submit_status = 1".$modified_part.
+      " where id = $timesheet_id and user_id = $user_id and group_id = $group_id and org_id = $org_id";
+    $affected = $mdb2->exec($sql);
+    return (!is_a($affected, 'PEAR_Error'));
+  }
+
+  // sendSubmitEmail sends a notification to an approver about a timesheet submit.
+  static function sendSubmitEmail($fields) {
+    global $i18n;
+    global $user;
+
+    // Send email to a selected approver.
+    if (!$fields['approver_id']) return true; // No approver, nothing to do.
+
+    $approver = ttTimesheetHelper::getApprover($fields['approver_id']);
+    if (!$approver) return false; // Invalid approver id.
+
+    $fields['to'] = $approver['email'];
+    $fields['subject'] = $i18n->get('form.timesheet_view.submit_subject');
+    $fields['body'] = sprintf($i18n->get('form.timesheet_view.submit_body'), $user->getName());
+
+    return ttTimesheetHelper::sendEmail($fields);
+  }
+
+  // sendApprovedEmail sends a notification to user about a timesheet approval.
+  static function sendApprovedEmail($fields) {
+    global $i18n;
+    global $user;
+
+    // Obtain user email.
+    $user_details = $user->getUserDetails($fields['user_id']);
+    $email = $user_details['email'];
+    if (!$email) return true; // No email to send to, nothing to do.
+
+    $fields['to'] = $email;
+    $fields['subject'] = $i18n->get('form.timesheet_view.approve_subject');
+    $fields['body'] = sprintf($i18n->get('form.timesheet_view.approve_body'), htmlspecialchars($fields['name']), htmlspecialchars($fields['comment']));
+
+    return ttTimesheetHelper::sendEmail($fields);
+  }
+
+  // sendDisapprovedEmail sends a notification to user about a timesheet disapproval.
+  static function sendDisapprovedEmail($fields) {
+    global $i18n;
+    global $user;
+
+    // Obtain user email.
+    $user_details = $user->getUserDetails($fields['user_id']);
+    $email = $user_details['email'];
+    if (!$email) return true; // No email to send to, nothing to do.
+
+    $fields['to'] = $email;
+    $fields['subject'] = $i18n->get('form.timesheet_view.disapprove_subject');
+    $fields['body'] = sprintf($i18n->get('form.timesheet_view.disapprove_body'), htmlspecialchars($fields['name']), htmlspecialchars($fields['comment']));
+
+    return ttTimesheetHelper::sendEmail($fields);
+  }
+
+  // sendEmail is a generic finction that sends a timesheet related email.
+  // TODO: perhaps make it even more generic for the entire application.
+  static function sendEmail($fields, $html = true) {
+    global $i18n;
+    global $user;
+
+    // Send email.
+    import('mail.Mailer');
+    $mailer = new Mailer();
+    $mailer->setCharSet(CHARSET);
+    if ($html)
+      $mailer->setContentType('text/html');
+    $mailer->setSender(SENDER);
+    $mailer->setReceiver($fields['to']);
+    if (!empty($user->bcc_email))
+      $mailer->setReceiverBCC($user->bcc_email);
+    $mailer->setMailMode(MAIL_MODE);
+    if (!$mailer->send($fields['subject'], $fields['body']))
+      return false;
 
     return true;
   }
+
+  // markApproved marks a timesheet as approved.
+  static function markApproved($fields) {
+    global $user;
+    $mdb2 = getConnection();
+
+    $user_id = $user->getUser();
+    $group_id = $user->getGroup();
+    $org_id = $user->org_id;
+
+    $timesheet_id = $fields['timesheet_id'];
+    $comment = $fields['comment'];
+
+    $modified_part = ', modified = now(), modified_ip = '.$mdb2->quote($_SERVER['REMOTE_ADDR']).', modified_by = '.$user->id;
+
+    $sql = "update tt_timesheets set approve_status = 1, approve_comment = ".$mdb2->quote($comment).$modified_part.
+      " where id = $timesheet_id and submit_status = 1 and user_id = $user_id and group_id = $group_id and org_id = $org_id";
+    $affected = $mdb2->exec($sql);
+    return (!is_a($affected, 'PEAR_Error'));
+  }
+
+  // markDisapproved marks a timesheet as not approved.
+  static function markDisapproved($fields) {
+    global $user;
+    $mdb2 = getConnection();
+
+    $user_id = $user->getUser();
+    $group_id = $user->getGroup();
+    $org_id = $user->org_id;
+
+    $timesheet_id = $fields['timesheet_id'];
+    $comment = $fields['comment'];
+
+    $modified_part = ', modified = now(), modified_ip = '.$mdb2->quote($_SERVER['REMOTE_ADDR']).', modified_by = '.$user->id;
+
+    $sql = "update tt_timesheets set approve_status = 0, approve_comment = ".$mdb2->quote($comment).$modified_part.
+      " where id = $timesheet_id and submit_status = 1 and user_id = $user_id and group_id = $group_id and org_id = $org_id";
+    $affected = $mdb2->exec($sql);
+    return (!is_a($affected, 'PEAR_Error'));
+  }
+
+  // The timesheetItemsExist determines whether tt_log records exist in the specified period
+  // for inclusion in a new timesheet.
+  static function timesheetItemsExist($fields) {
+    global $user;
+    $mdb2 = getConnection();
+
+    $user_id = $user->getUser();
+    $group_id = $user->getGroup();
+    $org_id = $user->org_id;
+
+    if (isset($fields['client_id'])) $client_id = (int) $fields['client_id'];
+    if (isset($fields['project_id'])) $project_id = (int) $fields['project_id'];
+
+    $start_date = new DateAndTime($user->date_format, $fields['start_date']);
+    $start = $start_date->toString(DB_DATEFORMAT);
+
+    $end_date = new DateAndTime($user->date_format, $fields['end_date']);
+    $end = $end_date->toString(DB_DATEFORMAT);
+
+    // sql parts.
+    if ($client_id) $client_part = " and client_id = $client_id";
+    if ($project_id) $project_part = " and project_id = $project_id";
+
+    $sql = "select count(*) as num from tt_log".
+      " where status = 1 $client_part $project_part and timesheet_id is null".
+      " and date >= ".$mdb2->quote($start)." and date <= ".$mdb2->quote($end).
+      " and user_id = $user_id and group_id = $group_id and org_id = $org_id";
+    $res = $mdb2->query($sql);
+    if (!is_a($res, 'PEAR_Error')) {
+      $val = $res->fetchRow();
+      if ($val['num']) {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  // The overlaps function determines if a new timesheet overlaps with
+  // an already existing timesheet.
+  static function overlaps($fields) {
+    global $user;
+    $mdb2 = getConnection();
+
+    $user_id = $user->getUser();
+    $group_id = $user->getGroup();
+    $org_id = $user->org_id;
+
+    if (isset($fields['client_id'])) $client_id = (int) $fields['client_id'];
+    if (isset($fields['project_id'])) $project_id = (int) $fields['project_id'];
+
+    $start_date = new DateAndTime($user->date_format, $fields['start_date']);
+    $start = $start_date->toString(DB_DATEFORMAT);
+    $quoted_start = $mdb2->quote($start);
+
+    $end_date = new DateAndTime($user->date_format, $fields['end_date']);
+    $end = $end_date->toString(DB_DATEFORMAT);
+    $quoted_end = $mdb2->quote($end);
+
+    // sql parts.
+    if ($client_id) $client_part = " and client_id = $client_id";
+    if ($project_id) $project_part = " and project_id = $project_id";
+
+    $sql = "select id from tt_timesheets".
+      " where status is not null $client_part $project_part".
+      " and (($quoted_start >= start_date and $quoted_start <= end_date)".
+      "   or ($quoted_end >= start_date and $quoted_end <= end_date))".
+      " and user_id = $user_id and group_id = $group_id and org_id = $org_id";
+    $res = $mdb2->query($sql);
+    if (!is_a($res, 'PEAR_Error')) {
+      $val = $res->fetchRow();
+      if ($val['id']) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  // The getMatchingTimesheets function retrieves a timesheet that "matches"
+  // a report for an option to assign report items to it.
+  //
+  // Condition: report range is fully enclosed in an existing timesheet with
+  // matching client_id and project_id and null approved_status.
+  static function getMatchingTimesheets($options) {
+    global $user;
+    $mdb2 = getConnection();
+
+    $user_id = $user->getUser();
+    $group_id = $user->getGroup();
+    $org_id = $user->org_id;
+
+    // Check users.
+    if (isset($options['users'])) {
+      $comma_separated = $options['users'];
+      $users = explode(',', $comma_separated);
+      if (count($users) > 1 || $users[0] != $user->getUser())
+        return false;
+    }
+
+    // No timesheets for expenses.
+    if ($options['show_cost'] && $user->isPluginEnabled('ex')) return false;
+    
+    // Parts for client and project.
+    if ($options['client_id']) $client_part = ' and (client_id is null or client_id = '.(int)$options['client_id'].')';
+    if ($options['project_id']) $project_part = ' and (project_id is null or project_id = '.(int)$options['project_id'].')';
+
+    // Determine start and end dates.
+    $dateFormat = $user->getDateFormat();
+    if ($options['period'])
+      $period = new Period($options['period'], new DateAndTime($dateFormat));
+    else {
+      $period = new Period();
+      $period->setPeriod(
+        new DateAndTime($dateFormat, $options['period_start']),
+        new DateAndTime($dateFormat, $options['period_end']));
+    }
+    $start = $period->getStartDate(DB_DATEFORMAT);
+    $end = $period->getEndDate(DB_DATEFORMAT);
+
+    $result = false;
+    $sql = "select id, name from tt_timesheets".
+      " where ".$mdb2->quote($start)." >= start_date and ".$mdb2->quote($end)." <= end_date".
+      "$client_part $project_part".
+      " and user_id = $user_id and group_id = $group_id and org_id = $org_id".
+      " and approve_status is null and status is not null";
+    $res = $mdb2->query($sql);
+    if (!is_a($res, 'PEAR_Error')) {
+      while ($val = $res->fetchRow()) {
+        $result[] = $val;
+      }
+    }
+    return $result;
+  }
 }