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tims-todo/application/models/task_model.php

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<?php
/**
* Public Model Task_Model
* @package Todo
*/
class Task_model extends CI_Model {
private $title, $description, $category, $priority, $due,
$status, $user_id, $task_id, $reminder, $reminder_time,
$groups, $group_perms, $friends, $friend_perms, $share_type;
public $form_vals;
// --------------------------------------------------------------------------
/**
* Get day task list
*
* Gets tasks for calendar view
* @param int $start
* @param int $end
* @param int $num_days
* @return array
*/
public function get_day_task_list($start, $end, $num_days)
{
$uid = (int) $this->session->userdata('uid');
//Get user's tasks
$user_sql = $this->db->select('item.title, item.id, item.due')
->from('item')
->where('user_id', $uid)
->where_not_in('status', [STATUS_COMPLETED, STATUS_CANCELED])
->where('due >=', $start)
->where('due <=', $end)
->get_compiled_select();
//Get group-shared tasks
$group_sql = $this->db->select('item.title, item.id, item.due')
->from('user')
->join('group_users_link', 'group_users_link.user_id=user.id', 'inner')
->join('group_task_link', 'group_task_link.group_id=group_users_link.group_id', 'inner')
->join('item', 'item.id=group_task_link.task_id', 'inner')
->where('todo_user.id', $uid)
->where_not_in('status', [STATUS_COMPLETED, STATUS_CANCELED])
->where('due >=', $start)
->where('due <=', $end)
->where('todo_group_task_link.permissions !=', PERM_NO_ACCESS)
->get_compiled_select();
//Get friend-shared tasks
$friend_sql = $this->db->select('item.title, item.id, item.due')
->from('user')
->join('user_task_link', 'user_task_link.user_id=user.id', 'inner')
->join('item', 'item.id=user_task_link.task_id', 'inner')
->where('todo_user.id', $uid)
->where_not_in('status', [STATUS_COMPLETED, STATUS_CANCELED])
->where('due >=', $start)
->where('due <=', $end)
->where('todo_user_task_link.permissions !=', PERM_NO_ACCESS)
->get_compiled_select();
$sql = "{$user_sql}\nUNION\n{$group_sql}\nUNION\n{$friend_sql}";
$cal_query = $this->db->query($sql);
$task_array = $cal_query->result_array();
//Some loopy variables
$content = array();
$due = $start;
$due_end = $due + 86399;
$day = 1;
while($day <= $num_days)
{
foreach ($task_array as $task)
{
if($task['due'] >= $due && $task['due'] <= $due_end)
{
//@codeCoverageIgnoreStart
if(isset($content[$day]))
{
$content[$day] .= '<li><a href="'.site_url('task/view/'.
$task['id']).'">'.$task['title'].
'</a><br /> due '.date('h:i A', $task['due']).'</li>';
}
//@codeCoverageIgnoreEnd
else
{
$content[$day] = '<li><a href="'.site_url('task/view/'.
$task['id']).'">'.$task['title'].
'</a><br /> due '.date('h:i A', $task['due']).'</li>';
}
}
}
++$day;
$due += 86400;
$due_end += 86400;
}
return $content;
}
// --------------------------------------------------------------------------
/**
* Get Checklist
*
* Returns Checklist for current task
* @param int $task_id
* @return array
*/
public function get_checklist($task_id)
{
//Get the checklist for the current task from the database
$chk = $this->db->select('id, task_id, description, is_checked')
->from('checklist')
->where('task_id', $task_id)
->order_by('is_checked', 'asc')
->order_by('id')
->get();
return ($chk->num_rows() > 0) ? $chk->result_array() : array();
}
// --------------------------------------------------------------------------
/**
* Add Checklist Item
*
* Adds a checklist item to the current checklist
* @return mixed bool/array
*/
public function add_checklist_item()
{
$task_id = (int)$this->input->post('task_id');
$desc = $this->input->post('desc', TRUE);
//Check if the current item already exists.
$exists = $this->db->select('task_id, description')
->from('checklist')
->where('task_id', $task_id)
->where('description', $desc)
->get();
if($exists->num_rows() < 1)
{
//Insert the item
$this->db->set('task_id', $task_id)
->set('description', $desc)
->insert('checklist');
//Return the row
$return = $this->db->select('id, task_id, description, is_checked')
->from('checklist')
->where('task_id', $task_id)
->where('description', $desc)
->get();
return $return->row_array();
}
return FALSE;
}
// --------------------------------------------------------------------------
/**
* Delete Comment
*
* Deletes a comment from a task
* @param int $c_id
* @return int
*/
public function delete_comment($c_id)
{
//Get the user group id
$uid = $this->session->userdata('uid');
//Delete the comment that matches the c_id and uid
$this->db->where('id', $c_id)
->where('user_id', $uid)
->delete('item_comments');
if($this->db->affected_rows() > 0)
{
return $this->db->affected_rows();
}
else
{
return -1;
}
}
// --------------------------------------------------------------------------
/**
* Get Task List
*
* Retrieves the user's tasks from the database
* @return mixed
*/
public function get_task_list()
{
$this->db->from('todo_task_view')
->where('user_id', (int) $this->session->userdata('uid'))
->where_not_in('status_id', [STATUS_COMPLETED, STATUS_CANCELED]);
$res = $this->db->get();
if($res->num_rows()==0) return NULL;
$result_array = array();
$i=1;
foreach($res->result_array() as $row)
{
$result_array[$i] = $row;
$result_array[$i]['overdue'] = ($row['due'] < time() && $row['due'] != 0 || $row['priority'] == "Immediate");
$i++;
}
return $result_array;
}
// --------------------------------------------------------------------------
/**
* Get archived task list
*
* Retrieves the user's archived tasks from the database
*
* @param int $page
* @param int $per_page
* @return array
*/
public function get_archived_task_list($page=0, $per_page=10)
{
$offset = ($page == 1) ? 0 : $page;
$limit = $per_page;
// Get the number of tasks for pagination
$this->db->select('item.id, user_id, category_id')
->from('item')
->where('user_id', $this->session->userdata('uid'))
->where_in('status', [STATUS_COMPLETED, STATUS_CANCELED])
->order_by('modified', 'desc');
$r_rows = $this->db->get();
$this->db->from('todo_task_view')
->where('user_id', $this->session->userdata('uid'))
->where_in('status_id', [STATUS_COMPLETED, STATUS_CANCELED])
->order_by('modified', 'desc')
->limit($limit, $offset);
$res = $this->db->get();
if($res->num_rows()==0) return NULL;
$result_array = array();
$i=1;
foreach($res->result_array() as $row)
{
$result_array[$i] = $row;
$result_array[$i]['overdue'] = FALSE;
$i++;
}
$result_array['num_rows'] = $r_rows->num_rows();
return $result_array;
}
// --------------------------------------------------------------------------
/**
* Get overdue task list
*
* Retrieves the user's overdue tasks from the database
* @return array
*/
public function get_overdue_task_list()
{
$this->db->select('item.id, user_id, category_id, item.priority,
status, item.title, due, modified, created,
category.title as category, priority.value as priority,
status.value as status')
->from('item')
->join('category', 'category.id=item.category_id', 'inner')
->join('priority', 'priority.id=item.priority', 'inner')
->join('status', 'status.id=item.status', 'inner')
->where('user_id', (int) $this->session->userdata('uid'))
->group_start()
->where('due <', time())
->or_where('item.priority', 9)
->group_end()
->where_not_in('status', [STATUS_COMPLETED, STATUS_CANCELED])
->where('due !=', 0)
->order_by('due', 'asc')
->order_by('item.priority', 'desc');
$res = $this->db->get();
if($res->num_rows()==0)
return NULL;
$result_array = array();
$i=1;
foreach($res->result_array() as $row)
{
$result_array[$i] = $row;
// Overdue is set as false to cut down on visual noise.
// Since every task in the list is overdue, using the
// visual style is redundant
$result_array[$i]['overdue'] = FALSE;
$i++;
}
return $result_array;
}
/**
* Get shared task list
*
* returns a list of shared tasks
* @return array
*/
public function get_shared_task_list()
{
$user_id = (int) $this->session->userdata('uid');
$user_shared_sql = $this->db->select('item.id, user.id as user_id, category_id, item.priority,
status, item.title, due, modified, created,
category.title as category, priority.value as priority,
status.value as status, group_task_link.permissions as group_perms')
->distinct()
->from('user')
->join('group_users_link', 'group_users_link.user_id=user.id', 'inner')
->join('group_task_link', 'group_task_link.group_id=group_users_link.group_id', 'inner')
->join('item', 'item.id=group_task_link.task_id', 'inner')
->join('category', 'category.id=item.category_id', 'inner')
->join('priority', 'priority.id=item.priority', 'inner')
->join('status', 'status.id=item.status', 'inner')
->where('todo_user.id', $user_id)
->where_not_in('status', [STATUS_COMPLETED, STATUS_CANCELED])
->where('todo_group_task_link.permissions !=', PERM_NO_ACCESS)
->get_compiled_select();
$group_shared_sql = $this->db->select('item.id, user.id as user_id, category_id, item.priority,
status, item.title, due, modified, created,
category.title as category, priority.value as priority,
status.value as status, user_task_link.permissions as user_perms')
->distinct()
->from('user')
->join('user_task_link', 'user_task_link.user_id=user.id', 'inner')
->join('item', 'item.id=user_task_link.task_id', 'inner')
->join('category', 'category.id=item.category_id', 'inner')
->join('priority', 'priority.id=item.priority', 'inner')
->join('status', 'status.id=item.status', 'inner')
->where('todo_user.id', $user_id)
->where_not_in('status', [STATUS_COMPLETED, STATUS_CANCELED])
->where('todo_user_task_link.permissions !=', PERM_NO_ACCESS)
->get_compiled_select();
$sql = "{$user_shared_sql}\nUNION ALL\n{$group_shared_sql}";
$res = $this->db->query($sql);
$now = time();
$result_array = array();
$i=1;
foreach($res->result_array() as $row)
{
$result_array[$i] = $row;
$result_array[$i]['overdue'] = ($result_array[$i]['due'] < $now && $result_array[$i]['due'] != 0);
$i++;
}
return $result_array;
}
// --------------------------------------------------------------------------
/**
* Validate Task
*
* Validates a new task before database submission.
* @return mixed
*/
public function validate_task()
{
// Clear previous validations
$this->form_vals = NULL;
$due = $this->input->post('due', TRUE);
$due_hour = $this->input->post('due_hour', TRUE);
$due_minute = $this->input->post('due_minute', TRUE);
$err = array();
// Basic validation
$valid = $this->form_validation->run('task');
if ( ! $valid)
{
$err = array_merge($err, (array)$this->form_validation->get_error_array());
}
//Check due date
if ($due != 0)
{
//Verify date format
$valid = $this->validation_callbacks->due_date($due);
if ( ! $valid)
{
return $err;
}
$due_a = explode('-', $due);
$min = $due_minute;
$hour = $due_hour;
$due_timestamp = mktime($hour,$min,0,$due_a[1],$due_a[2],$due_a[0]);
//Return form values
$this->form_vals['due'] = $due_timestamp;
$this->form_vals['due_minute'] = $due_minute;
}
else
{
$due_timestamp = 0;
}
//If there is an email reminder
if($this->input->post('reminder') == 'rem_true')
{
if($due == 0)
{
$err[] = "You must set a due date in order to get a reminder.";
}
if(!is_numeric($this->input->post('rem_hours')) OR
!is_numeric($this->input->post('rem_minutes')))
{
$err[] = "You must put numeric hours and minutes for a reminder time.";
}
else
{
$reminder_hour = (int)$this->input->post('rem_hours');
$reminder_min = (int)$this->input->post('rem_minutes');
$seconds = ($reminder_hour * 3600)+($reminder_min * 60);
$reminder_time = $due_timestamp - $seconds;
$this->reminder = TRUE;
$this->reminder_time = $reminder_time;
//Return form values
$this->form_vals['reminder'] = TRUE;
$this->form_vals['rem_hours'] = $reminder_hour;
$this->form_vals['rem_minutes'] = $reminder_min;
}
}
else
{
$this->reminder = FALSE;
}
$share_type = FALSE;
//If the task is shared
if($this->input->post('share') !== FALSE)
{
$groups = $this->input->post('group', TRUE);
$group_perms = $this->input->post('group_perms', TRUE);
$friends = $this->input->post('friend', TRUE);
$friend_perms = $this->input->post('friend_perms', TRUE);
if($groups != FALSE && $group_perms != FALSE)
{
$share_type = 'group';
}
if($friends != FALSE && $friend_perms != FALSE)
{
$share_type = 'friend';
}
}
//If there aren't any errors
if(empty($err))
{
$this->groups = ( ! empty($groups)) ? $groups : FALSE;
$this->friends = ( ! empty($friends)) ? $friends : FALSE;
$this->share_type = $share_type;
$this->due = $due_timestamp;
$this->friend_perms = (isset($friend_perms)) ? $friend_perms : FALSE;
$this->group_perms = (isset($group_perms)) ? $group_perms : FALSE;
$this->user_id = $this->session->userdata('uid');
$this->task_id = ($this->input->post('task_id') != FALSE) ?
$this->input->post('task_id') :
$this->db->count_all('item') + 1;
return TRUE;
}
else //otherwise, return the errors
{
return $err;
}
}
// --------------------------------------------------------------------------
/**
* Add Task
*
* Submits new task to database
* @return bool
*/
public function add_task()
{
$title = $this->input->post('title', TRUE);
$desc = $this->input->post('desc', TRUE);
$category = (int) $this->input->post('category');
$priority = (int) $this->input->post('priority');
$status = ($this->input->post('status') == FALSE) ? 1 : $this->input->post('status');
$created = time();
/*$title = $this->title;
$desc = $this->description;
$category = $this->category;
$priority = $this->priority;
$status = $this->status;
$created = $this->created;*/
$due = $this->due;
$uid = $this->user_id;
$this->db->set('user_id', $uid)
->set('category_id', $category)
->set('priority', $priority)
->set('status', $status)
->set('title', $title)
->set('description', $desc)
->set('due', $due)
->set('created', $created)
->set('modified', 0);
$this->db->insert('item');
if($this->db->affected_rows() < 1)
return FALSE;
//Get last inserted task
$query = $this->db->select('max(id) as id')->from('item')->get();
$row = $query->row();
$task_id = $row->id;
//Get groups
if($this->groups != FALSE)
{
if($this->group_perms != FALSE)
{
foreach($this->groups as $group)
{
$this->db->set('group_id', $group)
->set('task_id', $task_id)
->set('permissions', $this->group_perms)
->insert('group_task_link');
}
}
}
//Get friends
if($this->friends != FALSE)
{
if($this->friend_perms != FALSE)
{
foreach($this->friends as $friend)
{
$this->db->set('user_id', $friend)
->set('task_id', $task_id)
->set('permissions', $this->friend_perms)
->insert('user_task_link');
}
}
}
if($this->reminder == TRUE)
{
$reminder_time = $this->reminder_time;
$this->_add_reminder($task_id, $reminder_time);
}
return TRUE;
}
// --------------------------------------------------------------------------
/**
* Update Task
*
* Updates current task
* @return bool
*/
public function update_task()
{
$title = $this->title;
$desc = str_replace('<br>', '<br />', $this->description);
$category = $this->category;
$priority = $this->priority;
$status = $this->status;
$due = $this->due;
$uid = $this->user_id;
$task_id = $this->task_id;
$this->db->set('category_id', $category)
->set('priority', $priority)
->set('status', $status)
->set('title', $title)
->set('description', $desc)
->set('due', $due)
->set('modified', time())
->where('id', $task_id)
->where('user_id', $uid);
$this->db->update('item');
//Check the status separately, to account for email reminders
$this->update_status();
if($this->reminder == TRUE)
{
$reminder_time = $this->reminder_time;
$this->_add_reminder($task_id, $reminder_time);
}
else
{
// Delete old reminders
$this->db->where('task_id', $task_id)
->delete('reminder');
}
// Remove old shared permissions
{
// Delete existing groups and users
$group_list = $this->_get_task_groups($task_id);
// Delete groups
if ( ! empty($group_list))
{
$this->db->where_in('group_id', $group_list)
->where('task_id', $task_id)
->delete('group_task_link');
}
// Delete friends
$friend_list = $this->_get_task_users($task_id);
if ( ! empty($friend_list))
{
$this->db->where_in('user_id', $friend_list)
->where('task_id', $task_id)
->or_where('user_id', (int) $this->session->userdata('uid'))
->where('task_id', $task_id)
->delete('user_task_link');
}
}
//Get groups
if($this->share_type == 'group')
{
if($this->group_perms !== FALSE)
{
foreach($this->groups as $group)
{
$this->db->set('group_id', $group)
->set('task_id', $task_id)
->set('permissions', $this->group_perms)
->insert('group_task_link');
}
}
}
//Get friends
if($this->share_type == 'friend')
{
if($this->friend_perms !== FALSE)
{
foreach($this->friends as $friend)
{
$this->db->set('user_id', $friend)
->set('task_id', $task_id)
->set('permissions', $this->friend_perms)
->insert('user_task_link');
}
if ($this->db->affected_rows() < 1)
{return false;}
//Set current user too
$this->db->set('user_id', $this->session->userdata('uid'))
->set('task_id', $task_id)
->set('permissions', $this->friend_perms)
->insert('user_task_link');
}
}
return true;
}
// --------------------------------------------------------------------------
/**
* Get Task By Id
*
* Retrieves task from database by task id
* @param int $task_id
* @return array
*/
public function get_task_by_id($task_id)
{
//Get the task
$task = $this->db->select(
'item.id,
item.user_id,
item.priority,
item.title,
item.due,
item.modified,
item.created,
item.description,
user.username,
status.value as current_status,
priority.value as priority,
category.title as cat_name'
)
->from('item')
->join('user', 'user.id=todo_item.user_id', 'inner')
->join('category', 'category.id=todo_item.category_id', 'inner')
->join('priority', 'priority.id=todo_item.priority', 'inner')
->join('status', 'status.id=todo_item.status', 'inner')
->where('todo_item.id', (int) $task_id)
->get();
$task_array = $task->row_array();
//Get the task permissions
$result_array = array_merge($task_array, $this->_get_task_perms($task_id));
//Get selected groups
$result_array['selected_groups'] = $this->_get_task_groups($task_id);
//Get selected friends
$result_array['selected_friends'] = $this->_get_task_users($task_id);
//Get any related task reminders
$query2 = $this->db->select('task_id, reminder_time')
->from('reminder')
->where('task_id', $task_id)
->where('user_id', $this->session->userdata('uid'))
->get();
//If there aren't any reminders
if($query2->num_rows() < 1)
{
$result_array['reminder'] = FALSE;
$result_array['rem_hours'] = 0;
$result_array['rem_minutes'] = 30;
return $result_array;
}
else //There are reminders
{
$res2 = $query2->row();
$result_array['reminder'] = TRUE;
//Time until task is due, in seconds
$until_due = $result_array['due'] - $res2->reminder_time;
//In hours
$until_hours = ($until_due >= 3600) ? floor((int)$until_due / 3600) : 0;
//In additional minutes
$until_seconds = (int)$until_due - ($until_hours * 3600);
$until_minutes = (int)($until_seconds / 60);
$result_array['rem_hours'] = $until_hours;
$result_array['rem_minutes'] = $until_minutes;
return $result_array;
}
}
// --------------------------------------------------------------------------
/**
* Get the status id for the selected task
*
* @param int $task_id
* @return int
*/
public function get_current_status_id($task_id=0)
{
// @codeCoverageIgnoreStart
if($task_id==0)
{
$task_id=$this->uri->segment($this->uri->total_segments());
}
// @codeCoverageIgnoreEnd
//Get the status from the task
$task = $this->db->select('id, status')
->from('item')
->where('id', (int) $task_id)
->get();
$trow = $task->row();
$status_id = $trow->status;
return $status_id;
}
// --------------------------------------------------------------------------
/**
* Get Status Select
*
* Returns select options for task status
* @param int $task_id
* @param int $status_id
* @return string
*/
public function get_status_select($task_id=0, $status_id=NULL)
{
$html = '';
if (is_null($status_id))
{
$status_id = $this->get_current_status_id($task_id);
}
//Get the list of statuses
$query = $this->db->select('id, value as desc')
->from('status')
->order_by('id')
->get();
foreach($query->result() as $row)
{
$html .= T5.'<option value="'.$row->id.'"';
//Mark the appropriate one selected
$html .= ($row->id == $status_id) ? ' selected="selected">': '>';
$html .= $row->desc;
$html .= '</option>'.NL;
}
return $html;
}
// --------------------------------------------------------------------------
/**
* Get Priority Select
*
* Returns priority options for task status
* @param int $task_id
* @return string
*/
public function get_priority_select($task_id=0)
{
// @codeCoverageIgnoreStart
if($task_id==0)
$task_id=$this->uri->segment($this->uri->total_segments());
// @codeCoverageIgnoreEnd
$html = '';
//Get the status from the task
$task = $this->db->select('id, priority')
->from('item')
->where('id', $task_id)
->order_by('id', 'asc')
->get();
$trow = $task->row();
$pri_id = $trow->priority;
//Get the list of statuses
$query = $this->db->select('id, value as desc')
->from('priority')
->get();
foreach($query->result() as $row)
{
$html .= T5.'<option value="'.$row->id.'"';
//Mark the appropriate one selected
$html .= ($row->id == $pri_id) ? ' selected="selected">': '>';
$html .= $row->desc;
$html .= '</option>'.NL;
}
return $html;
}
// --------------------------------------------------------------------------
/**
* Get Category Select
*
* Returns category options for task status
* @param int $task_id
* @return string
*/
public function get_category_select($task_id=0)
{
// @codeCoverageIgnoreStart
if($task_id==0)
$task_id=$this->uri->segment($this->uri->total_segments());
// @codeCoverageIgnoreEnd
$html = '';
//Get the user's category group
$user_group_id = $this->todo->get_user_group();
//Get the category from the task
$task = $this->db->select('id, category_id')
->from('item')
->where('id', $task_id)
->get();
$trow = $task->row();
$category_id = $trow->category_id;
//Get the list of categories
$query = $this->db->select('id, title as desc')
->from('category')
->where('group_id', 0)
->or_where('group_id', $user_group_id)
->order_by('title', 'asc')
->get();
foreach($query->result() as $row)
{
$html .= T5.'<option value="'.$row->id.'"';
//Mark the appropriate one selected
$html .= ($row->id == $category_id) ? ' selected="selected">': '>';
$html .= $row->desc;
$html .= '</option>'.NL;
}
return $html;
}
// --------------------------------------------------------------------------
/**
* Update Status
*
* Updates task status
* @return int
*/
public function update_status()
{
$new_status = (int)$this->input->post('status');
$task_id = (int)$this->input->post('task_id');
//If you are marking it as complete
if($new_status == STATUS_COMPLETED)
{
//Check for reminders attached to that task
$rem_q = $this->db->select('id')
->from('reminder')
->where('task_id', $task_id)
->where('sent', 0)
->get();
//If there are reminders attached
if($rem_q->num_rows() > 0)
{
//Go through the results, and mark each as done
foreach($rem_q->result() as $reminder)
{
$this->db->set('sent', 1)
->where('id', $reminder->id)
->update('reminder');
}
}
}
else //Maybe it wasn't really complete yet
{
//Check if the task was marked complete
$stat_q = $this->db->select('status')
->from('item')
->where('id', $task_id)
->where_in('status', [STATUS_COMPLETED, STATUS_CANCELED])
->get();
//if it was complete, check for associated reminders that are due in the future
if($stat_q->num_rows() > 0)
{
$now = time();
$rem_q = $this->db->select('id')
->from('reminder')
->where('task_id', $task_id)
->where('reminder_time >', $now)
->get();
//Update those reminders to be sent
foreach($rem_q->result() as $reminder)
{
$this->db->set('sent', 0)
->where('id', $reminder->id)
->update('reminder');
}
}
}
//I guess we should actually update the status
$this->db->set('status', $new_status)
->set('modified', time())
->where('id', $task_id)
->update('item');
return $this->db->affected_rows(); //'success';
}
// --------------------------------------------------------------------------
/**
* Quick Update Category
*
* Updates task category via ajax
* @return int
*/
public function quick_update_category()
{
$new_category = (int)$this->input->post('category');
$task_id = (int)$this->input->post('task_id');
$this->db->set('category_id', $new_category)
->where('id', $task_id)
->update('item');
return $this->db->affected_rows(); //'success';
}
// --------------------------------------------------------------------------
/**
* Get task Comments
*
* Returns comments for the current task
* @param int $task_id
* @return array
*/
public function get_task_comments($task_id)
{
$comment_q = $this->db->select('item_comments.id, user_id, item_id, comment, time_posted, email, status.value as status')
->from('item_comments')
->join('user', 'item_comments.user_id=user.id', 'inner')
->join('status', 'item_comments.status=status.id', 'inner')
->where('item_id', (int) $task_id)
->order_by('time_posted', 'desc')
->get();
$result_array = $comment_q->result_array();
return $result_array;
}
// --------------------------------------------------------------------------
/**
* Add task comment
*
* Adds a task comment to the database
* @param int $task_id
* @return string
*/
public function add_task_comment($task_id)
{
$user_id = $this->session->userdata('uid');
$comment = xss_clean($this->input->post('comment'));
$status = $this->input->post('status');
$time = time();
//Insert the comment
$this->db->set('item_id', $task_id)
->set('user_id', $user_id)
->set('comment', $comment)
->set('time_posted', $time)
->set('status', $status)
->insert('item_comments');
return $this->db->affected_rows();
}
// --------------------------------------------------------------------------
/**
* Delete Task
*
* Checks for permissions to delete a task
* @param int $task_id
* @return null
*/
public function delete_task($task_id)
{
$user = $this->session->userdata('uid');
//Check if the user is task admin
$user_perms = $this->db->select('item.id')
->from('item')
->where('user_id', $user)
->get();
$admin = ($user_perms->num_rows() > 0) ? TRUE : FALSE;
//Check if the user has permission to delete this task
$friend_perms = $this->db->select('user.id')
->distinct()
->from('user')
->join('user_task_link', 'user_task_link.user_id=user.id', 'inner')
->join('item', 'user_task_link.task_id=item.id', 'inner')
->where('user.id', $user)
->where('task_id', $task_id)
->where('permissions', 9)
->get();
$user_admin = ($friend_perms->num_rows() > 0) ? TRUE : FALSE;
//Check if the group this user is in has permission to delete this task
$group_perms = $this->db->select('user.id')
->distinct()
->from('user')
->join('group_users_link', 'group_users_link.user_id=user.id', 'inner')
->join('group_task_link', 'group_task_link.group_id=group_users_link.group_id', 'inner')
->where('user.id', $user)
->where('group_task_link.task_id', $task_id)
->where('permissions', 9)
->get();
$group_admin = ($group_perms->num_rows() > 0) ? TRUE : FALSE;
//Check if the user has permission
if($admin === TRUE)
{
$this->_remove_task($task_id);
return;
}
else if($user_admin === TRUE)
{
$this->_remove_task($task_id);
return;
}
else if($group_admin === TRUE)
{
$this->_remove_task($task_id);
return;
}
else
{
show_error('You do not have permission to delete this task.');
return;
}
}
// --------------------------------------------------------------------------
/**
* Update Checklist
*
* Updates a checklist
*
* @param int $check_id
* @param int $checked
* @return int
*/
public function update_checklist($check_id, $checked)
{
$task_id = $this->input->post('task_id');
//Get the task checklist items
$clq = $this->db->select('is_checked')
->from('checklist')
->where('task_id', $task_id)
->get();
$checklist = $clq->result_array();
$num_items = count($checklist);
$num_checked = 0;
//Count the number checked
foreach($checklist as $bit)
{
//if true, add 1, if false, add 0;
$num_checked += $bit['is_checked'];
}
$unchecked = $num_items - $num_checked;
if($checked == 1) //Checking another box
{
//Check if it's the first checkbox to be checked
$is_first = ($num_checked == 0) ? TRUE : FALSE;
//Check if it's the last checkbox to be checked
$is_last = ($unchecked == 1) ? TRUE : FALSE;
//Update the checklist item in db
$this->db->set('is_checked', 1)
->where('id', $check_id)
->update('checklist');
//if the checkbox doesn't update, show error
if($this->db->affected_rows() < 1)
{
return -1;
}
//If it's the first item, set the status of the task to "In progress"
if($is_first == TRUE)
{
$this->db->set('status', 3)
->where('id', $task_id)
->update('item');
return ($this->db->affected_rows() > 0) ? "first" : -1;
}
if($is_last == TRUE) //set status to "Completed"
{
$this->db->set('status', 2)
->where('id', $task_id)
->update('item');
return ($this->db->affected_rows() > 0) ? "last" : -1;
}
else
{
return 1;
}
}
else if($checked == 0) //Unchecking a checkbox
{
$is_last = ($unchecked == 0) ? TRUE : FALSE;
//Update the checklist item in db
$this->db->set('is_checked', 0)
->where('id', $check_id)
->update('checklist');
if($this->db->affected_rows() < 1)
return PERM_NO_ACCESS;
//if unchecking the last item, set status as "In progress"
if($is_last == TRUE)
{
$this->db->set('status', 3)
->where('id', $task_id)
->update('item');
return ($this->db->affected_rows() > 0) ? "first" : -1;
}
}
}
// --------------------------------------------------------------------------
/**
* Add Reminder
*
* Adds reminder to the database
*/
private function _add_reminder($task_id, $reminder_time)
{
$user_id = (int) $this->session->userdata('uid');
//Check for a reminder with the current task id
$query = $this->db->select('task_id')
->from('reminder')
->where('task_id', $task_id)
->get();
//Check if there is an existing reminder for this task
if($query->num_rows() < 1)
{
$this->db->set('task_id', $task_id)
->set('reminder_time', $reminder_time)
->set('user_id', $user_id)
->insert('reminder');
}
else //If there is, update it.
{
$this->db->set('reminder_time', $reminder_time)
->where('task_id', $task_id)
->where('user_id', $user_id)
->update('reminder');
}
}
// --------------------------------------------------------------------------
/**
* Get Task Groups
*
* Returns groups related to the current task
* @param int $task_id
* @return array
*/
private function _get_task_groups($task_id)
{
$groups = $this->db->select('group_id')
->from('group_task_link')
->where('permissions !=', PERM_NO_ACCESS)
->where('task_id', $task_id)
->get();
$group_list = $groups->result_array();
$result_array = array();
if($groups->num_rows() < 1)
{
return FALSE;
}
foreach($group_list as $group)
{
$result_array[] = $group['group_id'];
}
return $result_array;
}
// --------------------------------------------------------------------------
/**
* Get Task Users
*
* Returns users related to the current task
* @param int $task_id
* @return array
*/
private function _get_task_users($task_id)
{
$query = $this->db->select('user_id')
->from('user_task_link')
->where('permissions !=', PERM_NO_ACCESS)
->where('task_id', $task_id)
->get();
$friend_list = $query->result_array();
$result_array = array();
if($query->num_rows() < 1)
{
return FALSE;
}
foreach($friend_list as $friend)
{
$result_array[] = $friend['user_id'];
}
return $result_array;
}
// --------------------------------------------------------------------------
/**
* Get Task Perms
*
* Get the permissions of the current task
* @param int $task_id
* @return array
*/
private function _get_task_perms($task_id)
{
/**
* Get the task shared permissions
*/
//Get groups associated with the task and user
$group_perms = $this->db->select('group_task_link.permissions')
->from('user')
->join('group_users_link', 'group_users_link.user_id=user.id', 'inner')
->join('group_task_link', 'group_task_link.group_id=group_users_link.group_id', 'inner')
->join('item', 'item.id=group_task_link.task_id', 'inner')
->where('todo_item.id', (int) $task_id)
->where('todo_group_task_link.permissions !=', PERM_NO_ACCESS)
->where('todo_user.id', (int) $this->session->userdata('uid'))
->limit(1)
->get();
//Get friends associated with the task and user
$friend_perms = $this->db->select('user_task_link.permissions')
->from('item')
->join('user_task_link', 'user_task_link.task_id=item.id')
->where('todo_user_task_link.permissions !=', PERM_NO_ACCESS)
->where('todo_user_task_link.task_id', (int) $task_id)
->where('todo_user_task_link.user_id', (int) $this->session->userdata('uid'))
->limit(1)
->get();
//Set permissions to no access as default
$result_array = array(
'friend_perms' => PERM_NO_ACCESS,
'group_perms' => PERM_NO_ACCESS,
'user_perms' => PERM_NO_ACCESS
);
$resf = ($friend_perms->num_rows() == 1) ? $friend_perms->row_array() : array('permissions' => FALSE);
$resg = ($group_perms->num_rows() == 1) ? $group_perms->row_array() : array('permissions' => FALSE);
//Group permissions are set
if($resg['permissions'] !== FALSE && $resf['permissions'] === FALSE)
{
//Return groups query
$result_array['group_perms'] = $resg['permissions'];
$result_array['friend_perms'] = PERM_NO_ACCESS;
}
//Group and friend permissions set
if($resg['permissions'] !== FALSE && $resf['permissions'] !== FALSE)
{
//Return groups query and friend_perms
$result_array['friend_perms'] = $resf['permissions'];
$result_array['group_perms'] = $resf['permissions'];
}
//Friend Permissions are set
if($resg['permissions'] === FALSE && $resf['permissions'] !== FALSE)
{
//Return user query
$result_array['friend_perms'] = $resf['permissions'];
$result_array['group_perms'] = PERM_NO_ACCESS;
}
/**
* Get the current user's permissions from the database
*/
//Check group permissions
$upG = $this->db->select('permissions')
->from('user')
->join('group_users_link', 'group_users_link.user_id=user.id', 'inner')
->join('group_task_link', 'group_task_link.group_id=group_users_link.group_id', 'inner')
->where('todo_group_users_link.user_id', (int) $this->session->userdata('uid'))
->where('todo_group_task_link.task_id', (int) $task_id)
->get();
//Check user permissions
$upU = $this->db->select('permissions')
->from('user_task_link')
->where('todo_user_task_link.user_id', (int) $this->session->userdata('uid'))
->where('todo_user_task_link.task_id', $task_id)
->get();
//Check if task admin
$upA = $this->db->select('id')
->from('item')
->where('id', (int) $task_id)
->where('user_id', (int) $this->session->userdata('uid'))
->get();
//Check for admin permissions
if($upA->num_rows() > 0)
{
$result_array['user_perms'] = 9;
return $result_array;
}
else //User is not admin
{
//Check group permissions
if($upG->num_rows() > 0)
{
$upG_row = $upG->row_array();
$result_array['user_perms'] = $upG_row['permissions'];
}
//Check individual user permissions
if($upU->num_rows() > 0)
{
$up_row = $upU->row_array();
$result_array['user_perms'] = $up_row['permissions'];
}
//Determine whether the current user can view and/or edit this task
if($result_array['user_perms'] == PERM_NO_ACCESS)
{
show_error('You do not have permission to view this task.');
return NULL;
}
else if($result_array['user_perms'] < PERM_WRITE_ACCESS && $this->uri->segment('2') == "edit")
{
show_error('You do not have permission to edit this task.');
return NULL;
}
return $result_array;
}
}
// --------------------------------------------------------------------------
/**
* Remove Task
*
* Delete a task from the database
* @param int $task_id
*/
private function _remove_task($task_id)
{
//Delete references from reminder
$this->db->where('task_id', $task_id)
->delete('reminder');
//Delete references from group_task_link
$this->db->where('task_id', $task_id)
->delete('group_task_link');
//Delete references from user_task_link
$this->db->where('task_id', $task_id)
->delete('user_task_link');
//Delete task comments
$this->db->where('item_id', $task_id)
->delete('item_comments');
//Delete checklists
$this->db->where('task_id', $task_id)
->delete('checklist');
//Delete the task
$this->db->where('id', $task_id)
->delete('item');
//Redirect to the task list
$this->todo->redirect_303(site_url('task/list'));
}
}
// End of task_model.php
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