<?php
/* For licensing terms, see /license.txt */
/**
 * @package chamilo.webservices
 */
require_once(dirname(__FILE__).'/../inc/global.inc.php');
require_once(dirname(__FILE__).'/webservice.php');

/**
 * Web services available for the User module. This class extends the WS class
 */
class WSUser extends WS {

	/**
	 * Enables or disables a user
	 *
	 * @param string User id field name
	 * @param string User id value
	 * @param int Set to 1 to enable and to 0 to disable
	 */
	protected function changeUserActiveState($user_id_field_name, $user_id_value, $state) {
		$user_id = $this->getUserId($user_id_field_name, $user_id_value);
		if($user_id instanceof WSError) {
			return $user_id;
		} else {
			if($state == 0) {
				UserManager::disable($user_id);
			} else if($state == 1) {
				UserManager::enable($user_id);
			}
		}
	}

	/**
	 * Enables or disables multiple users
	 *
	 * @param array Users
	 * @param int Set to 1 to enable and to 0 to disable
	 * @return array Array of results
	 */
	protected function changeUsersActiveState($users, $state) {
		$results = array();
		foreach($users as $user) {
			$result_tmp = array();
			$result_op = $this->changeUserActiveState($user['user_id_field_name'], $user['user_id_value'], $state);
			$result_tmp['user_id_value'] = $user['user_id_value'];
			if($result_op instanceof WSError) {
				// Return the error in the results
				$result_tmp['result'] = $result_op->toArray();
			} else {
				$result_tmp['result'] = $this->getSuccessfulResult();
			}
			$results[] = $result_tmp;
		}
		return $results;
	}

	/**
	 * Disables a user
	 *
	 * @param string API secret key
	 * @param string User id field name. Use "chamilo_user_id" as the field name if you want to use the internal user_id
	 * @param string User id value
	 */
	public function DisableUser($secret_key, $user_id_field_name, $user_id_value) {
		$verifKey = $this->verifyKey($secret_key);
		if($verifKey instanceof WSError) {
			// Let the implementation handle it
			$this->handleError($verifKey);
		} else {
			$result = $this->changeUserActiveState($user_id_field_name, $user_id_value, 0);
			if($result instanceof WSError) {
				$this->handleError($result);
			}
		}
	}

	/**
	 * Disables multiple users
	 *
	 * @param string API secret key
	 * @param array Array of users with elements of the form array('user_id_field_name' => 'name_of_field', 'user_id_value' => 'value')
	 * @return array Array with elements like array('user_id_value' => 'value', 'result' => array('code' => 0, 'message' => 'Operation was successful')). Note that if the result array contains a code different
	 * than 0, an error occured
	 */
	public function DisableUsers($secret_key, $users) {
		$verifKey = $this->verifyKey($secret_key);
		if($verifKey instanceof WSError) {
			// Let the implementation handle it
			$this->handleError($verifKey);
		} else {
			return $this->changeUsersActiveState($users, 0);
		}
	}

	/**
	 * Enables a user
	 *
	 * @param string API secret key
	 * @param string User id field name. Use "chamilo_user_id" as the field name if you want to use the internal user_id
	 * @param string User id value
	 */
	public function EnableUser($secret_key, $user_id_field_name, $user_id_value) {
		$verifKey = $this->verifyKey($secret_key);
		if($verifKey instanceof WSError) {
			$this->handleError($verifKey);
		} else {
			$result = $this->changeUserActiveState($user_id_field_name, $user_id_value, 1);
			if($result instanceof WSError) {
				$this->handleError($result);
			}
		}
	}

	/**
	 * Enables multiple users
	 *
	 * @param string API secret key
	 * @param array Array of users with elements of the form array('user_id_field_name' => 'name_of_field', 'user_id_value' => 'value')
	 * @return array Array with elements like array('user_id_value' => 'value', 'result' => array('code' => 0, 'message' => 'Operation was successful')). Note that if the result array contains a code different
	 * than 0, an error occured
	 */
	public function EnableUsers($secret_key, $users) {
		$verifKey = $this->verifyKey($secret_key);
		if($verifKey instanceof WSError) {
			// Let the implementation handle it
			$this->handleError($verifKey);
		} else {
			return $this->changeUsersActiveState($users, 1);
		}
	}

	/**
	 * Deletes a user (helper method)
	 *
	 * @param string User id field name. Use "chamilo_user_id" as the field name if you want to use the internal user_id
	 * @param string User id value
	 * @return mixed True if user was successfully deleted, WSError otherwise
	 */
	protected function deleteUserHelper($user_id_field_name, $user_id_value) {
		$user_id = $this->getUserId($user_id_field_name, $user_id_value);
		if($user_id instanceof WSError) {
			return $user_id;
		} else {
			if(!UserManager::delete_user($user_id)) {
				return new WSError(101, "There was a problem while deleting this user");
			} else {
				return true;
			}
		}
	}

	/**
	 * Deletes a user
	 *
	 * @param string API secret key
	 * @param string User id field name. Use "chamilo_user_id" as the field name if you want to use the internal user_id
	 * @param string User id value
	 */
	public function DeleteUser($secret_key, $user_id_field_name, $user_id_value) {
		$verifKey = $this->verifyKey($secret_key);
		if($verifKey instanceof WSError) {
			$this->handleError($verifKey);
		} else {
			$result = $this->deleteUserHelper($user_id_field_name, $user_id_value);
			if($result instanceof WSError) {
				$this->handleError($result);
			}
		}
	}

	/**
	 * Deletes multiple users
	 *
	 * @param string API secret key
	 * @param array Array of users with elements of the form array('user_id_field_name' => 'name_of_field', 'user_id_value' => 'value')
	 * @return array Array with elements like array('user_id_value' => 'value', 'result' => array('code' => 0, 'message' => 'Operation was successful')). Note that if the result array contains a code different
	 * than 0, an error occured
	 */
	public function DeleteUsers($secret_key, $users) {
		$verifKey = $this->verifyKey($secret_key);
		if($verifKey instanceof WSError) {
			$this->handleError($verifKey);
		} else {
			$results = array();
			foreach($users as $user) {
				$result_tmp = array();
				$result_op = $this->deleteUserHelper($user['user_id_field_name'], $user['user_id_value']);
				$result_tmp['user_id_value'] = $user['user_id_value'];
				if($result_op instanceof WSError) {
					// Return the error in the results
					$result_tmp['result'] = $result_op->toArray();
				} else {
					$result_tmp['result'] = $this->getSuccessfulResult();
				}
				$results[] = $result_tmp;
			}
			return $results;
		}
	}

	/**
	 * Creates a user (helper method)
	 *
	 * @param string User first name
	 * @param string User last name
	 * @param int User status
	 * @param string Login name
	 * @param string Password (encrypted or not)
	 * @param string Encrypt method. Leave blank if you are passing the password in clear text, set to the encrypt method used to encrypt the password otherwise. Remember
	 * to include the salt in the extra fields if you are encrypting the password
	 * @param string User id field name. Use "chamilo_user_id" as the field name if you want to use the internal user_id
	 * @param string User id value. Leave blank if you are using the internal user_id
	 * @param int Visibility.
	 * @param string User email.
	 * @param string Language.
	 * @param string Phone.
	 * @param string Expiration date
	 * @param array Extra fields. An array with elements of the form ('field_name' => 'name_of_the_field', 'field_value' => 'value_of_the_field').
	 * @return mixed New user id generated by the system, WSError otherwise
	 */
	protected function createUserHelper($firstname, $lastname, $status, $login, $password, $encrypt_method, $user_id_field_name, $user_id_value, $visibility, $email, $language, $phone, $expiration_date, $extras = array()) {
        global $api_failureList;
		// Add the original user id field name and value to the extra fields if needed
		$extras_associative = array();
		if($user_id_field_name != "chamilo_user_id") {
			$extras_associative[$user_id_field_name] = $user_id_value;
		}
                if (!empty($extras)) {
                    foreach($extras as $extra) {
                        $extras_associative[$extra['field_name']] = $extra['field_value'];
                    }
                }
		$result = UserManager::create_user($firstname, $lastname, $status, $email, $login, $password, '', $language, $phone, '', PLATFORM_AUTH_SOURCE, $expiration_date, $visibility, 0, $extras_associative, $encrypt_method);
		if (!$result) {
			$failure = $api_failureList[0];
			if($failure == 'login-pass already taken') {
				return new WSError(102, 'This username is already taken');
			} else if($failure == 'encrypt_method invalid') {
				return new WSError(103, 'The encryption of the password is invalid');
			} else {
				return new WSError(104, 'There was an error creating the user');
			}
		} else {
			return $result;
		}
	}

	/**
	 * Creates a user
	 *
	 * @param string API secret key
	 * @param string User first name
	 * @param string User last name
	 * @param int User status
	 * @param string Login name
	 * @param string Password (encrypted or not)
	 * @param string Encrypt method. Leave blank if you are passing the password in clear text, set to the encrypt method used to encrypt the password otherwise. Remember
	 * to include the salt in the extra fields if you are encrypting the password
	 * @param string User id field name. Use "chamilo_user_id" as the field name if you want to use the internal user_id
	 * @param string User id value. Leave blank if you are using the internal user_id
	 * @param int Visibility. Set by default to 1
	 * @param string User email. Set by default to an empty string
	 * @param string Language. Set by default to english
	 * @param string Phone. Set by default to an empty string
	 * @param string Expiration date. Set to null by default
	 * @param array Extra fields. An array with elements of the form ('field_name' => 'name_of_the_field', 'field_value' => 'value_of_the_field'). Set to an empty array by default
	 * @return int New user id generated by the system
	 */
	public function CreateUser($secret_key, $firstname, $lastname, $status, $login, $password, $encrypt_method, $user_id_field_name, $user_id_value, $visibility = 1, $email = '', $language = 'english', $phone = '', $expiration_date = '0000-00-00 00:00:00', $extras = array()) {
		// First, verify the secret key
		$verifKey = $this->verifyKey($secret_key);
		if($verifKey instanceof WSError) {
			$this->handleError($verifKey);
		} else {
			$result = $this->createUserHelper($firstname, $lastname, $status, $login, $password, $encrypt_method, $user_id_field_name, $user_id_value, $visibility, $email, $language, $phone, $expiration_date, $extras);
			if($result instanceof WSError) {
				$this->handleError($result);
			} else {
				return $result;
			}
		}
	}

	/**
	 * Creates multiple users
	 *
	 * @param string API secret key
	 * @param array Users array. Each member of this array must follow the structure imposed by the CreateUser method
	 * @return array Array with elements of the form array('user_id_value' => 'original value sent', 'user_id_generated' => 'value_generated', 'result' => array('code' => 0, 'message' => 'Operation was successful'))
	 */
	public function CreateUsers($secret_key, $users) {
		$verifKey = $this->verifyKey($secret_key);
		if($verifKey instanceof WSError) {
			$this->handleError($verifKey);
		} else {
			$results = array();
			foreach($users as $user) {
				$result_tmp = array();
                // re-initialize variables just in case
                $firstname = $lastname = $status = $login = $password = $encrypt_method = $user_id_field_name = $user_id_value = $visibility = $email = $language = $phone = $expiration_date = $extras = null;
				extract($user);
				$result = $this->createUserHelper($firstname, $lastname, $status, $login, $password, $encrypt_method, $user_id_field_name, $user_id_value, $visibility, $email, $language, $phone, $expiration_date, $extras);
				if($result instanceof WSError) {
					$result_tmp['result'] = $result->toArray();
					$result_tmp['user_id_value'] = $user_id_value;
					$result_tmp['user_id_generated'] = 0;
				} else {
					$result_tmp['result'] = $this->getSuccessfulResult();
					$result_tmp['user_id_value'] = $user_id_value;
					$result_tmp['user_id_generated'] = $result;
				}
				$results[] = $result_tmp;
			}
			return $results;
		}
	}

	/**
	 * Edits user info (helper method)
	 *
	 * @param string User id field name. Use "chamilo_user_id" in order to use internal system id
	 * @param string User id value
	 * @param string First name
	 * @param string Last name
	 * @param int User status
	 * @param string Login name
	 * @param string Password. Leave blank if you don't want to update it
	 * @param string Encrypt method
	 * @param string User email
	 * @param string Language. Set by default to english
	 * @param string Phone. Set by default to an empty string
	 * @param string Expiration date. Set to null by default
	 * @param array Extra fields. An array with elements of the form ('field_name' => 'name_of_the_field', 'field_value' => 'value_of_the_field'). Leave empty if you don't want to update
	 * @return mixed True if user was successfully updated, WSError otherwise
	 */
	protected function editUserHelper(
		$user_id_field_name,
		$user_id_value,
		$firstname,
		$lastname,
		$status,
		$loginname,
		$password,
		$encrypt_method,
		$email,
		$language,
		$phone,
		$expiration_date,
		$extras
	) {
        global $api_failureList;
		$user_id = $this->getUserId($user_id_field_name, $user_id_value);
		if($user_id instanceof WSError) {
			return $user_id;
		} else {
			if($password == '') {
				$password = null;
			}
			$user_info = api_get_user_info($user_id);
			if (count($extras) == 0) {
				$extras = null;
			}

			$result = UserManager::update_user(
				$user_id,
				$firstname,
				$lastname,
				$loginname,
				$password,
				PLATFORM_AUTH_SOURCE,
				$email,
				$status,
				'',
				$phone,
				$user_info['picture_uri'],
				$expiration_date,
				$user_info['active'],
				null,
				$user_info['hr_dept_id'],
				$extras,
				$encrypt_method
			);
			if (!$result) {
				$failure = $api_failureList[0];
				if($failure == 'encrypt_method invalid') {
					return new WSError(103, 'The encryption of the password is invalid');
				} else {
					return new WSError(105, 'There was an error updating the user');
				}
			} else {
				return $result;
			}
		}
	}

	/**
	 * Edits user info
	 *
	 * @param string API secret key
	 * @param string User id field name. Use "chamilo_user_id" in order to use internal system id
	 * @param string User id value
	 * @param string First name
	 * @param string Last name
	 * @param int User status
	 * @param string Login name
	 * @param string Password. Leave blank if you don't want to update it
	 * @param string Encrypt method
	 * @param string User email
	 * @param string Language. Set by default to english
	 * @param string Phone. Set by default to an empty string
	 * @param string Expiration date. Set to null by default
	 * @param array Extra fields. An array with elements of the form ('field_name' => 'name_of_the_field', 'field_value' => 'value_of_the_field'). Leave empty if you don't want to update
	 */
	public function EditUser($secret_key, $user_id_field_name, $user_id_value, $firstname, $lastname, $status, $loginname, $password, $encrypt_method, $email, $language, $phone, $expiration_date, $extras) {
		// First, verify the secret key
		$verifKey = $this->verifyKey($secret_key);
		if($verifKey instanceof WSError) {
			$this->handleError($verifKey);
		} else {

			$extras_associative = array();
			if (!empty($extras)) {
				foreach($extras as $extra) {
					$extras_associative[$extra['field_name']] = $extra['field_value'];
				}
			}

			$result = $this->editUserHelper($user_id_field_name, $user_id_value, $firstname, $lastname, $status, $loginname, $password, $encrypt_method, $email, $language, $phone, $expiration_date, $extras_associative);
			if($result instanceof WSError) {
				$this->handleError($result);
			}
		}
	}

	/**
	 * Edits multiple users
	 *
	 * @param string API secret key
	 * @param array Users array. Each member of this array must follow the structure imposed by the EditUser method
	 * @return array Array with elements like array('user_id_value' => 'value', 'result' => array('code' => 0, 'message' => 'Operation was successful')). Note that if the result array contains a code different
	 * than 0, an error occured
	 */
	public function EditUsers($secret_key, $users) {
		$verifKey = $this->verifyKey($secret_key);
		if($verifKey instanceof WSError) {
			$this->handleError($verifKey);
		} else {
			$results = array();
			foreach($users as $user) {
				$result_tmp = array();
                // re-initialize variables just in case
                $user_id_field_name = $user_id_value = $firstname = $lastname = $status = $loginname = $password = $encrypt_method = $email = $language = $phone = $expiration_date = $extras = null;
				extract($user);
				$result_op = $this->editUserHelper($user_id_field_name, $user_id_value, $firstname, $lastname, $status, $loginname, $password, $encrypt_method, $email, $language, $phone, $expiration_date, $extras);
				$result_tmp['user_id_value'] = $user['user_id_value'];
				if($result_op instanceof WSError) {
					// Return the error in the results
					$result_tmp['result'] = $result_op->toArray();
				} else {
					$result_tmp['result'] = $this->getSuccessfulResult();
				}
				$results[] = $result_tmp;
			}
			return $results;
		}
	}
}