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easyappointments/src/application/models/Providers_model.php

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<?php defined('BASEPATH') OR exit('No direct script access allowed');
/* ----------------------------------------------------------------------------
* Easy!Appointments - Open Source Web Scheduler
*
* @package EasyAppointments
* @author A.Tselegidis <alextselegidis@gmail.com>
* @copyright Copyright (c) 2013 - 2017, Alex Tselegidis
* @license http://opensource.org/licenses/GPL-3.0 - GPLv3
* @link http://easyappointments.org
* @since v1.0.0
* ---------------------------------------------------------------------------- */
/**
* Providers_Model Class
*
* Contains the database operations for the service provider users of Easy!Appointments.
*
* Data Structure:
* 'fist_name'
* 'last_name' (required)
* 'email' (required)
* 'mobile_number'
* 'phone_number' (required)
* 'address'
* 'city'
* 'state'
* 'zip_code'
* 'notes'
* 'id_roles'
* 'services' >> array that contains the ids that the provider can provide
* 'settings'
* 'username'
* 'password'
* 'notifications'
* 'working_plan'
* 'google_sync'
* 'google_token'
* 'google_calendar'
* 'sync_past_days'
* 'sync_future_days',
* 'calendar_view'
*
* @package Models
*/
class Providers_Model extends CI_Model {
/**
* Add (insert - update) a service provider record.
*
* If the record already exists (id value provided) then it is going to be updated, otherwise inserted into the
* database.
*
* @param array $provider Contains the service provider data.
*
* @return int Returns the record id.
*
* @throws Exception When the record data validation fails.
*/
public function add($provider)
{
$this->validate($provider);
if ($this->exists($provider) && ! isset($provider['id']))
{
$provider['id'] = $this->find_record_id($provider);
}
if ( ! isset($provider['id']))
{
$provider['id'] = $this->_insert($provider);
} else
{
$provider['id'] = $this->_update($provider);
}
return (int)$provider['id'];
}
/**
* Check whether a particular provider record already exists in the database.
*
* @param array $provider Contains the provider data. The 'email' value is required in order to check for a provider.
*
* @return bool Returns whether the provider record exists or not.
*
* @throws Exception When the 'email' value is not provided.
*/
public function exists($provider)
{
if ( ! isset($provider['email']))
{
throw new Exception('Provider email is not provided:' . print_r($provider, TRUE));
}
// This method shouldn't depend on another method of this class.
$num_rows = $this->db
->select('*')
->from('ea_users')
->join('ea_roles', 'ea_roles.id = ea_users.id_roles', 'inner')
->where('ea_users.email', $provider['email'])
->where('ea_roles.slug', DB_SLUG_PROVIDER)
->get()->num_rows();
return ($num_rows > 0) ? TRUE : FALSE;
}
/**
* Insert a new provider record into the database.
*
* @param array $provider Contains the provider data (must be already validated).
*
* @return int Returns the new record id.
*
* @throws Exception When the insert operation fails.
*/
protected function _insert($provider)
{
$this->load->helper('general');
// Get provider role id.
$provider['id_roles'] = $this->get_providers_role_id();
// Store provider settings and services (must not be present on the $provider array).
$services = $provider['services'];
unset($provider['services']);
$settings = $provider['settings'];
unset($provider['settings']);
// Insert provider record and save settings.
if ( ! $this->db->insert('ea_users', $provider))
{
throw new Exception('Could not insert provider into the database');
}
$settings['salt'] = generate_salt();
$settings['password'] = hash_password($settings['salt'], $settings['password']);
$provider['id'] = $this->db->insert_id();
$this->save_settings($settings, $provider['id']);
$this->save_services($services, $provider['id']);
// Return the new record id.
return (int)$provider['id'];
}
/**
* Update an existing provider record in the database.
*
* @param array $provider Contains the provider data.
*
* @return int Returns the record id.
*
* @throws Exception When the update operation fails.
*/
protected function _update($provider)
{
$this->load->helper('general');
// Store service and settings (must not be present on the $provider array).
$services = $provider['services'];
unset($provider['services']);
$settings = $provider['settings'];
unset($provider['settings']);
if (isset($settings['password']))
{
$salt = $this->db->get_where('ea_user_settings', ['id_users' => $provider['id']])->row()->salt;
$settings['password'] = hash_password($salt, $settings['password']);
}
// Update provider record.
$this->db->where('id', $provider['id']);
if ( ! $this->db->update('ea_users', $provider))
{
throw new Exception('Could not update provider record.');
}
$this->save_services($services, $provider['id']);
$this->save_settings($settings, $provider['id']);
// Return record id.
return (int)$provider['id'];
}
/**
* Find the database record id of a provider.
*
* @param array $provider Contains the provider data. The 'email' value is required in order to find the record id.
*
* @return int Returns the record id.
*
* @throws Exception When the provider's email value is not provided.
*/
public function find_record_id($provider)
{
if ( ! isset($provider['email']))
{
throw new Exception('Provider email was not provided:' . print_r($provider, TRUE));
}
$result = $this->db
->select('ea_users.id')
->from('ea_users')
->join('ea_roles', 'ea_roles.id = ea_users.id_roles', 'inner')
->where('ea_users.email', $provider['email'])
->where('ea_roles.slug', DB_SLUG_PROVIDER)
->get();
if ($result->num_rows() == 0)
{
throw new Exception('Could not find provider record id.');
}
return (int)$result->row()->id;
}
/**
* Validate provider data before the insert or update operation is executed.
*
* @param array $provider Contains the provider data.
*
* @return bool Returns the validation result.
*
* @throws Exception If provider validation fails.
*/
public function validate($provider)
{
$this->load->helper('data_validation');
// If a provider id is present, check whether the record exist in the database.
if (isset($provider['id']))
{
$num_rows = $this->db->get_where('ea_users',
['id' => $provider['id']])->num_rows();
if ($num_rows == 0)
{
throw new Exception('Provided record id does not exist in the database.');
}
}
// Validate required fields.
if ( ! isset($provider['last_name'])
|| ! isset($provider['email'])
|| ! isset($provider['phone_number']))
{
throw new Exception('Not all required fields are provided: ' . print_r($provider, TRUE));
}
// Validate provider email address.
if ( ! filter_var($provider['email'], FILTER_VALIDATE_EMAIL))
{
throw new Exception('Invalid email address provided: ' . $provider['email']);
}
// Validate provider services.
if ( ! isset($provider['services']) || ! is_array($provider['services']))
{
throw new Exception('Invalid provider services given: ' . print_r($provider, TRUE));
} else
{ // Check if services are valid int values.
foreach ($provider['services'] as $service_id)
{
if ( ! is_numeric($service_id))
{
throw new Exception('A provider service with invalid id was found: '
. print_r($provider, TRUE));
}
}
}
// Validate provider settings.
if ( ! isset($provider['settings']) || count($provider['settings']) == 0
|| ! is_array($provider['settings']))
{
throw new Exception('Invalid provider settings given: ' . print_r($provider, TRUE));
}
// Check if username exists.
if (isset($provider['settings']['username']))
{
$user_id = (isset($provider['id'])) ? $provider['id'] : '';
if ( ! $this->validate_username($provider['settings']['username'], $user_id))
{
throw new Exception ('Username already exists. Please select a different '
. 'username for this record.');
}
}
// Validate provider password
if (isset($provider['settings']['password']))
{
if (strlen($provider['settings']['password']) < MIN_PASSWORD_LENGTH)
{
throw new Exception('The user password must be at least '
. MIN_PASSWORD_LENGTH . ' characters long.');
}
}
// Validate calendar view mode.
if (isset($provider['settings']['calendar_view']) && ($provider['settings']['calendar_view'] !== CALENDAR_VIEW_DEFAULT
&& $provider['settings']['calendar_view'] !== CALENDAR_VIEW_TABLE))
{
throw new Exception('The calendar view setting must be either "' . CALENDAR_VIEW_DEFAULT
. '" or "' . CALENDAR_VIEW_TABLE . '", given: ' . $provider['settings']['calendar_view']);
}
// When inserting a record the email address must be unique.
$provider_id = (isset($provider['id'])) ? $provider['id'] : '';
$num_rows = $this->db
->select('*')
->from('ea_users')
->join('ea_roles', 'ea_roles.id = ea_users.id_roles', 'inner')
->where('ea_roles.slug', DB_SLUG_PROVIDER)
->where('ea_users.email', $provider['email'])
->where('ea_users.id <>', $provider_id)
->get()
->num_rows();
if ($num_rows > 0)
{
throw new Exception('Given email address belongs to another provider record. '
. 'Please use a different email.');
}
return TRUE;
}
/**
* Delete an existing provider record from the database.
*
* @param int $customer_id The record id to be deleted.
*
* @return bool Returns the delete operation result.
*
* @throws Exception When the provider id value is not int.
*/
public function delete($provider_id)
{
if ( ! is_numeric($provider_id))
{
throw new Exception('Invalid argument type $provider_id: ' . $provider_id);
}
$num_rows = $this->db->get_where('ea_users', ['id' => $provider_id])->num_rows();
if ($num_rows == 0)
{
return FALSE; // Record does not exist in database.
}
return $this->db->delete('ea_users', ['id' => $provider_id]);
}
/**
* Get a specific provider record from the database.
*
* @param int $provider_id The id of the record to be returned.
*
* @return array Returns an associative array with the selected record's data. Each key has the same name as the
* database field names.
*
* @throws Exception When the selected record does not exist in database.
*/
public function get_row($provider_id)
{
if ( ! is_numeric($provider_id))
{
throw new Exception('$provider_id argument is not a valid numeric value: ' . $provider_id);
}
// Check if selected record exists on database.
if ($this->db->get_where('ea_users', ['id' => $provider_id])->num_rows() == 0)
{
throw new Exception('Selected record does not exist in the database.');
}
// Get provider data.
$provider = $this->db->get_where('ea_users', ['id' => $provider_id])->row_array();
// Include provider services.
$services = $this->db->get_where('ea_services_providers',
['id_users' => $provider_id])->result_array();
$provider['services'] = [];
foreach ($services as $service)
{
$provider['services'][] = $service['id_services'];
}
// Include provider settings.
$provider['settings'] = $this->db->get_where('ea_user_settings',
['id_users' => $provider_id])->row_array();
unset($provider['settings']['id_users']);
// Return provider data array.
return $provider;
}
/**
* Get a specific field value from the database.
*
* @param string $field_name The field name of the value to be returned.
* @param int $provider_id Record id of the value to be returned.
*
* @return string Returns the selected record value from the database.
*
* @throws Exception When the $field_name argument is not a valid string.
* @throws Exception When the $provider_id is not a valid int.
* @throws Exception When the provider record does not exist in the database.
* @throws Exception When the selected field value is not present on database.
*/
public function get_value($field_name, $provider_id)
{
if ( ! is_numeric($provider_id))
{
throw new Exception('Invalid argument provided as $provider_id: ' . $provider_id);
}
if ( ! is_string($field_name))
{
throw new Exception('$field_name argument is not a string: ' . $field_name);
}
// Check whether the provider record exists in database.
$result = $this->db->get_where('ea_users', ['id' => $provider_id]);
if ($result->num_rows() == 0)
{
throw new Exception('The record with the $provider_id argument does not exist in '
. 'the database: ' . $provider_id);
}
$provider = $result->row_array();
if ( ! isset($provider[$field_name]))
{
throw new Exception('The given $field_name argument does not exist in the '
. 'database: ' . $field_name);
}
return $provider[$field_name];
}
/**
* Get all, or specific records from provider's table.
*
* @example $this->Model->get_batch('id = ' . $recordId);
*
* @param mixed $where_clause (OPTIONAL) The WHERE clause of the query to be executed.
*
* NOTICE: DO NOT INCLUDE 'WHERE' KEYWORD.
*
* @return array Returns the rows from the database.
*/
public function get_batch($where_clause = '')
{
// CI db class may confuse two where clauses made in the same time, so
// get the role id first and then apply the get_batch() where clause.
$role_id = $this->get_providers_role_id();
if ($where_clause != '')
{
$this->db->where($where_clause);
}
$batch = $this->db->get_where('ea_users',
['id_roles' => $role_id])->result_array();
// Include each provider services and settings.
foreach ($batch as &$provider)
{
// Services
$services = $this->db->get_where('ea_services_providers',
['id_users' => $provider['id']])->result_array();
$provider['services'] = [];
foreach ($services as $service)
{
$provider['services'][] = $service['id_services'];
}
// Settings
$provider['settings'] = $this->db->get_where('ea_user_settings',
['id_users' => $provider['id']])->row_array();
unset($provider['settings']['id_users']);
}
// Return provider records in an array.
return $batch;
}
/**
* Get the available system providers.
*
* This method returns the available providers and the services that can provide.
*
* @return array Returns an array with the providers data.
*/
public function get_available_providers()
{
// Get provider records from database.
$this->db
->select('ea_users.*')
->from('ea_users')
->join('ea_roles', 'ea_roles.id = ea_users.id_roles', 'inner')
->where('ea_roles.slug', DB_SLUG_PROVIDER);
$providers = $this->db->get()->result_array();
// Include each provider services and settings.
foreach ($providers as &$provider)
{
// Services
$services = $this->db->get_where('ea_services_providers',
['id_users' => $provider['id']])->result_array();
$provider['services'] = [];
foreach ($services as $service)
{
$provider['services'][] = $service['id_services'];
}
// Settings
$provider['settings'] = $this->db->get_where('ea_user_settings',
['id_users' => $provider['id']])->row_array();
unset($provider['settings']['username']);
unset($provider['settings']['password']);
unset($provider['settings']['salt']);
}
// Return provider records.
return $providers;
}
/**
* Get the providers role id from the database.
*
* @return int Returns the role id for the provider records.
*/
public function get_providers_role_id()
{
return $this->db->get_where('ea_roles', ['slug' => DB_SLUG_PROVIDER])->row()->id;
}
/**
* Get a providers setting from the database.
*
* @param string $setting_name The setting name that is going to be returned.
* @param int $provider_id The selected provider id.
*
* @return string Returns the value of the selected user setting.
*/
public function get_setting($setting_name, $provider_id)
{
$provider_settings = $this->db->get_where('ea_user_settings', ['id_users' => $provider_id])->row_array();
return $provider_settings[$setting_name];
}
/**
* Set a provider's setting value in the database.
*
* The provider and settings record must already exist.
*
* @param string $setting_name The setting's name.
* @param string $value The setting's value.
* @param int $provider_id The selected provider id.
*/
public function set_setting($setting_name, $value, $provider_id)
{
$this->db->where(['id_users' => $provider_id]);
return $this->db->update('ea_user_settings', [$setting_name => $value]);
}
/**
* Save the provider settings (used from insert or update operation).
*
* @param array $settings Contains the setting values.
* @param int $provider_id Record id of the provider.
*
* @throws Exception If $provider_id argument is invalid.
* @throws Exception If $settings argument is invalid.
*/
protected function save_settings($settings, $provider_id)
{
if ( ! is_numeric($provider_id))
{
throw new Exception('Invalid $provider_id argument given:' . $provider_id);
}
if (count($settings) == 0 || ! is_array($settings))
{
throw new Exception('Invalid $settings argument given:' . print_r($settings, TRUE));
}
// Check if the setting record exists in db.
if ($this->db->get_where('ea_user_settings', ['id_users' => $provider_id])
->num_rows() == 0)
{
$this->db->insert('ea_user_settings', ['id_users' => $provider_id]);
}
foreach ($settings as $name => $value)
{
$this->set_setting($name, $value, $provider_id);
}
}
/**
* Save the provider services in the database (use on both insert and update operation).
*
* @param array $services Contains the service ids that the selected provider can provide.
* @param int $provider_id The selected provider record id.
*
* @throws Exception When the $services argument type is not array.
* @throws Exception When the $provider_id argument type is not int.
*/
protected function save_services($services, $provider_id)
{
// Validate method arguments.
if ( ! is_array($services))
{
throw new Exception('Invalid argument type $services: ' . $services);
}
if ( ! is_numeric($provider_id))
{
throw new Exception('Invalid argument type $provider_id: ' . $provider_id);
}
// Save provider services in the database (delete old records and add new).
$this->db->delete('ea_services_providers', ['id_users' => $provider_id]);
foreach ($services as $service_id)
{
$service_provider = [
'id_users' => $provider_id,
'id_services' => $service_id
];
$this->db->insert('ea_services_providers', $service_provider);
}
}
/**
* Validate Records Username
*
* @param string $username The provider records username.
* @param int $user_id The user record id.
*
* @return bool Returns the validation result.
*/
public function validate_username($username, $user_id)
{
$num_rows = $this->db->get_where('ea_user_settings',
['username' => $username, 'id_users <> ' => $user_id])->num_rows();
return ($num_rows > 0) ? FALSE : TRUE;
}
}
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