<?php
/**
 * WHMCS SDK Sample Provisioning Module
 *
 * Provisioning Modules, also referred to as Product or Server Modules, allow
 * you to create modules that allow for the provisioning and management of
 * products and services in WHMCS.
 *
 * This sample file demonstrates how a provisioning module for WHMCS should be
 * structured and exercises all supported functionality.
 *
 * Provisioning Modules are stored in the /modules/servers/ directory. The
 * module name you choose must be unique, and should be all lowercase,
 * containing only letters & numbers, always starting with a letter.
 *
 * Within the module itself, all functions must be prefixed with the module
 * filename, followed by an underscore, and then the function name. For this
 * example file, the filename is "provisioningmodule" and therefore all
 * functions begin "provisioningmodule_".
 *
 * If your module or third party API does not support a given function, you
 * should not define that function within your module. Only the _ConfigOptions
 * function is required.
 *
 * For more information, please refer to the online documentation.
 *
 * @see https://developers.whmcs.com/provisioning-modules/
 *
 * @copyright Copyright (c) WHMCS Limited 2017
 * @license https://www.whmcs.com/license/ WHMCS Eula
 */

if (!defined("WHMCS")) {
    die("This file cannot be accessed directly");
}

// Require any libraries needed for the module to function.
// require_once __DIR__ . '/path/to/library/loader.php';
//
// Also, perform any initialization required by the service's library.

/**
 * Define module related meta data.
 *
 * Values returned here are used to determine module related abilities and
 * settings.
 *
 * @see https://developers.whmcs.com/provisioning-modules/meta-data-params/
 *
 * @return array
 */
function provisioningmodule_MetaData()
{
    return array(
        'DisplayName' => 'Demo Provisioning Module',
        'APIVersion' => '1.1', // Use API Version 1.1
        'RequiresServer' => true, // Set true if module requires a server to work
        'DefaultNonSSLPort' => '1111', // Default Non-SSL Connection Port
        'DefaultSSLPort' => '1112', // Default SSL Connection Port
        'ServiceSingleSignOnLabel' => 'Login to Panel as User',
        'AdminSingleSignOnLabel' => 'Login to Panel as Admin',
    );
}

/**
 * Define product configuration options.
 *
 * The values you return here define the configuration options that are
 * presented to a user when configuring a product for use with the module. These
 * values are then made available in all module function calls with the key name
 * configoptionX - with X being the index number of the field from 1 to 24.
 *
 * You can specify up to 24 parameters, with field types:
 * * text
 * * password
 * * yesno
 * * dropdown
 * * radio
 * * textarea
 *
 * Examples of each and their possible configuration parameters are provided in
 * this sample function.
 *
 * @see https://developers.whmcs.com/provisioning-modules/config-options/
 *
 * @return array
 */
function provisioningmodule_ConfigOptions()
{
    return array(
        // a text field type allows for single line text input
        'Text Field' => array(
            'Type' => 'text',
            'Size' => '25',
            'Default' => '1024',
            'Description' => 'Enter in megabytes',
        ),
        // a password field type allows for masked text input
        'Password Field' => array(
            'Type' => 'password',
            'Size' => '25',
            'Default' => '',
            'Description' => 'Enter secret value here',
        ),
        // the yesno field type displays a single checkbox option
        'Checkbox Field' => array(
            'Type' => 'yesno',
            'Description' => 'Tick to enable',
        ),
        // the dropdown field type renders a select menu of options
        'Dropdown Field' => array(
            'Type' => 'dropdown',
            'Options' => array(
                'option1' => 'Display Value 1',
                'option2' => 'Second Option',
                'option3' => 'Another Option',
            ),
            'Description' => 'Choose one',
        ),
        // the radio field type displays a series of radio button options
        'Radio Field' => array(
            'Type' => 'radio',
            'Options' => 'First Option,Second Option,Third Option',
            'Description' => 'Choose your option!',
        ),
        // the textarea field type allows for multi-line text input
        'Textarea Field' => array(
            'Type' => 'textarea',
            'Rows' => '3',
            'Cols' => '60',
            'Description' => 'Freeform multi-line text input field',
        ),
    );
}

/**
 * Provision a new instance of a product/service.
 *
 * Attempt to provision a new instance of a given product/service. This is
 * called any time provisioning is requested inside of WHMCS. Depending upon the
 * configuration, this can be any of:
 * * When a new order is placed
 * * When an invoice for a new order is paid
 * * Upon manual request by an admin user
 *
 * @param array $params common module parameters
 *
 * @see https://developers.whmcs.com/provisioning-modules/module-parameters/
 *
 * @return string "success" or an error message
 */
function provisioningmodule_CreateAccount(array $params)
{
    try {
        // Call the service's provisioning function, using the values provided
        // by WHMCS in `$params`.
        //
        // A sample `$params` array may be defined as:
        //
        // ```
        // array(
        //     'domain' => 'The domain of the service to provision',
        //     'username' => 'The username to access the new service',
        //     'password' => 'The password to access the new service',
        //     'configoption1' => 'The amount of disk space to provision',
        //     'configoption2' => 'The new services secret key',
        //     'configoption3' => 'Whether or not to enable FTP',
        //     ...
        // )
        // ```
    } catch (Exception $e) {
        // Record the error in WHMCS's module log.
        logModuleCall(
            'provisioningmodule',
            __FUNCTION__,
            $params,
            $e->getMessage(),
            $e->getTraceAsString()
        );

        return $e->getMessage();
    }

    return 'success';
}

/**
 * Suspend an instance of a product/service.
 *
 * Called when a suspension is requested. This is invoked automatically by WHMCS
 * when a product becomes overdue on payment or can be called manually by admin
 * user.
 *
 * @param array $params common module parameters
 *
 * @see https://developers.whmcs.com/provisioning-modules/module-parameters/
 *
 * @return string "success" or an error message
 */
function provisioningmodule_SuspendAccount(array $params)
{
    try {
        // Call the service's suspend function, using the values provided by
        // WHMCS in `$params`.
    } catch (Exception $e) {
        // Record the error in WHMCS's module log.
        logModuleCall(
            'provisioningmodule',
            __FUNCTION__,
            $params,
            $e->getMessage(),
            $e->getTraceAsString()
        );

        return $e->getMessage();
    }

    return 'success';
}

/**
 * Un-suspend instance of a product/service.
 *
 * Called when an un-suspension is requested. This is invoked
 * automatically upon payment of an overdue invoice for a product, or
 * can be called manually by admin user.
 *
 * @param array $params common module parameters
 *
 * @see https://developers.whmcs.com/provisioning-modules/module-parameters/
 *
 * @return string "success" or an error message
 */
function provisioningmodule_UnsuspendAccount(array $params)
{
    try {
        // Call the service's unsuspend function, using the values provided by
        // WHMCS in `$params`.
    } catch (Exception $e) {
        // Record the error in WHMCS's module log.
        logModuleCall(
            'provisioningmodule',
            __FUNCTION__,
            $params,
            $e->getMessage(),
            $e->getTraceAsString()
        );

        return $e->getMessage();
    }

    return 'success';
}

/**
 * Terminate instance of a product/service.
 *
 * Called when a termination is requested. This can be invoked automatically for
 * overdue products if enabled, or requested manually by an admin user.
 *
 * @param array $params common module parameters
 *
 * @see https://developers.whmcs.com/provisioning-modules/module-parameters/
 *
 * @return string "success" or an error message
 */
function provisioningmodule_TerminateAccount(array $params)
{
    try {
        // Call the service's terminate function, using the values provided by
        // WHMCS in `$params`.
    } catch (Exception $e) {
        // Record the error in WHMCS's module log.
        logModuleCall(
            'provisioningmodule',
            __FUNCTION__,
            $params,
            $e->getMessage(),
            $e->getTraceAsString()
        );

        return $e->getMessage();
    }

    return 'success';
}

/**
 * Change the password for an instance of a product/service.
 *
 * Called when a password change is requested. This can occur either due to a
 * client requesting it via the client area or an admin requesting it from the
 * admin side.
 *
 * This option is only available to client end users when the product is in an
 * active status.
 *
 * @param array $params common module parameters
 *
 * @see https://developers.whmcs.com/provisioning-modules/module-parameters/
 *
 * @return string "success" or an error message
 */
function provisioningmodule_ChangePassword(array $params)
{
    try {
        // Call the service's change password function, using the values
        // provided by WHMCS in `$params`.
        //
        // A sample `$params` array may be defined as:
        //
        // ```
        // array(
        //     'username' => 'The service username',
        //     'password' => 'The new service password',
        // )
        // ```
    } catch (Exception $e) {
        // Record the error in WHMCS's module log.
        logModuleCall(
            'provisioningmodule',
            __FUNCTION__,
            $params,
            $e->getMessage(),
            $e->getTraceAsString()
        );

        return $e->getMessage();
    }

    return 'success';
}

/**
 * Upgrade or downgrade an instance of a product/service.
 *
 * Called to apply any change in product assignment or parameters. It
 * is called to provision upgrade or downgrade orders, as well as being
 * able to be invoked manually by an admin user.
 *
 * This same function is called for upgrades and downgrades of both
 * products and configurable options.
 *
 * @param array $params common module parameters
 *
 * @see https://developers.whmcs.com/provisioning-modules/module-parameters/
 *
 * @return string "success" or an error message
 */
function provisioningmodule_ChangePackage(array $params)
{
    try {
        // Call the service's change password function, using the values
        // provided by WHMCS in `$params`.
        //
        // A sample `$params` array may be defined as:
        //
        // ```
        // array(
        //     'username' => 'The service username',
        //     'configoption1' => 'The new service disk space',
        //     'configoption3' => 'Whether or not to enable FTP',
        // )
        // ```
    } catch (Exception $e) {
        // Record the error in WHMCS's module log.
        logModuleCall(
            'provisioningmodule',
            __FUNCTION__,
            $params,
            $e->getMessage(),
            $e->getTraceAsString()
        );

        return $e->getMessage();
    }

    return 'success';
}

/**
 * Renew an instance of a product/service.
 *
 * Attempt to renew an existing instance of a given product/service. This is
 * called any time a product/service invoice has been paid. 
 *
 * @param array $params common module parameters
 *
 * @see https://developers.whmcs.com/provisioning-modules/module-parameters/
 *
 * @return string "success" or an error message
 */
function provisioningmodule_Renew(array $params)
{
    try {
        // Call the service's provisioning function, using the values provided
        // by WHMCS in `$params`.
        //
        // A sample `$params` array may be defined as:
        //
        // ```
        // array(
        //     'domain' => 'The domain of the service to provision',
        //     'username' => 'The username to access the new service',
        //     'password' => 'The password to access the new service',
        //     'configoption1' => 'The amount of disk space to provision',
        //     'configoption2' => 'The new services secret key',
        //     'configoption3' => 'Whether or not to enable FTP',
        //     ...
        // )
        // ```
    } catch (Exception $e) {
        // Record the error in WHMCS's module log.
        logModuleCall(
            'provisioningmodule',
            __FUNCTION__,
            $params,
            $e->getMessage(),
            $e->getTraceAsString()
        );

        return $e->getMessage();
    }

    return 'success';
}

/**
 * Test connection with the given server parameters.
 *
 * Allows an admin user to verify that an API connection can be
 * successfully made with the given configuration parameters for a
 * server.
 *
 * When defined in a module, a Test Connection button will appear
 * alongside the Server Type dropdown when adding or editing an
 * existing server.
 *
 * @param array $params common module parameters
 *
 * @see https://developers.whmcs.com/provisioning-modules/module-parameters/
 *
 * @return array
 */
function provisioningmodule_TestConnection(array $params)
{
    try {
        // Call the service's connection test function.

        $success = true;
        $errorMsg = '';
    } catch (Exception $e) {
        // Record the error in WHMCS's module log.
        logModuleCall(
            'provisioningmodule',
            __FUNCTION__,
            $params,
            $e->getMessage(),
            $e->getTraceAsString()
        );

        $success = false;
        $errorMsg = $e->getMessage();
    }

    return array(
        'success' => $success,
        'error' => $errorMsg,
    );
}

/**
 * Additional actions an admin user can invoke.
 *
 * Define additional actions that an admin user can perform for an
 * instance of a product/service.
 *
 * @see provisioningmodule_buttonOneFunction()
 *
 * @return array
 */
function provisioningmodule_AdminCustomButtonArray()
{
    return array(
        "Button 1 Display Value" => "buttonOneFunction",
        "Button 2 Display Value" => "buttonTwoFunction",
    );
}

/**
 * Additional actions a client user can invoke.
 *
 * Define additional actions a client user can perform for an instance of a
 * product/service.
 *
 * Any actions you define here will be automatically displayed in the available
 * list of actions within the client area.
 *
 * @return array
 */
function provisioningmodule_ClientAreaCustomButtonArray()
{
    return array(
        "Action 1 Display Value" => "actionOneFunction",
        "Action 2 Display Value" => "actionTwoFunction",
    );
}

/**
 * Custom function for performing an additional action.
 *
 * You can define an unlimited number of custom functions in this way.
 *
 * Similar to all other module call functions, they should either return
 * 'success' or an error message to be displayed.
 *
 * @param array $params common module parameters
 *
 * @see https://developers.whmcs.com/provisioning-modules/module-parameters/
 * @see provisioningmodule_AdminCustomButtonArray()
 *
 * @return string "success" or an error message
 */
function provisioningmodule_buttonOneFunction(array $params)
{
    try {
        // Call the service's function, using the values provided by WHMCS in
        // `$params`.
    } catch (Exception $e) {
        // Record the error in WHMCS's module log.
        logModuleCall(
            'provisioningmodule',
            __FUNCTION__,
            $params,
            $e->getMessage(),
            $e->getTraceAsString()
        );

        return $e->getMessage();
    }

    return 'success';
}

/**
 * Custom function for performing an additional action.
 *
 * You can define an unlimited number of custom functions in this way.
 *
 * Similar to all other module call functions, they should either return
 * 'success' or an error message to be displayed.
 *
 * @param array $params common module parameters
 *
 * @see https://developers.whmcs.com/provisioning-modules/module-parameters/
 * @see provisioningmodule_ClientAreaCustomButtonArray()
 *
 * @return string "success" or an error message
 */
function provisioningmodule_actionOneFunction(array $params)
{
    try {
        // Call the service's function, using the values provided by WHMCS in
        // `$params`.
    } catch (Exception $e) {
        // Record the error in WHMCS's module log.
        logModuleCall(
            'provisioningmodule',
            __FUNCTION__,
            $params,
            $e->getMessage(),
            $e->getTraceAsString()
        );

        return $e->getMessage();
    }

    return 'success';
}

/**
 * Admin services tab additional fields.
 *
 * Define additional rows and fields to be displayed in the admin area service
 * information and management page within the clients profile.
 *
 * Supports an unlimited number of additional field labels and content of any
 * type to output.
 *
 * @param array $params common module parameters
 *
 * @see https://developers.whmcs.com/provisioning-modules/module-parameters/
 * @see provisioningmodule_AdminServicesTabFieldsSave()
 *
 * @return array
 */
function provisioningmodule_AdminServicesTabFields(array $params)
{
    try {
        // Call the service's function, using the values provided by WHMCS in
        // `$params`.
        $response = array();

        // Return an array based on the function's response.
        return array(
            'Number of Apples' => (int) $response['numApples'],
            'Number of Oranges' => (int) $response['numOranges'],
            'Last Access Date' => date("Y-m-d H:i:s", $response['lastLoginTimestamp']),
            'Something Editable' => '<input type="hidden" name="provisioningmodule_original_uniquefieldname" '
                . 'value="' . htmlspecialchars($response['textvalue']) . '" />'
                . '<input type="text" name="provisioningmodule_uniquefieldname"'
                . 'value="' . htmlspecialchars($response['textvalue']) . '" />',
        );
    } catch (Exception $e) {
        // Record the error in WHMCS's module log.
        logModuleCall(
            'provisioningmodule',
            __FUNCTION__,
            $params,
            $e->getMessage(),
            $e->getTraceAsString()
        );

        // In an error condition, simply return no additional fields to display.
    }

    return array();
}

/**
 * Execute actions upon save of an instance of a product/service.
 *
 * Use to perform any required actions upon the submission of the admin area
 * product management form.
 *
 * It can also be used in conjunction with the AdminServicesTabFields function
 * to handle values submitted in any custom fields which is demonstrated here.
 *
 * @param array $params common module parameters
 *
 * @see https://developers.whmcs.com/provisioning-modules/module-parameters/
 * @see provisioningmodule_AdminServicesTabFields()
 */
function provisioningmodule_AdminServicesTabFieldsSave(array $params)
{
    // Fetch form submission variables.
    $originalFieldValue = isset($_REQUEST['provisioningmodule_original_uniquefieldname'])
        ? $_REQUEST['provisioningmodule_original_uniquefieldname']
        : '';

    $newFieldValue = isset($_REQUEST['provisioningmodule_uniquefieldname'])
        ? $_REQUEST['provisioningmodule_uniquefieldname']
        : '';

    // Look for a change in value to avoid making unnecessary service calls.
    if ($originalFieldValue != $newFieldValue) {
        try {
            // Call the service's function, using the values provided by WHMCS
            // in `$params`.
        } catch (Exception $e) {
            // Record the error in WHMCS's module log.
            logModuleCall(
                'provisioningmodule',
                __FUNCTION__,
                $params,
                $e->getMessage(),
                $e->getTraceAsString()
            );

            // Otherwise, error conditions are not supported in this operation.
        }
    }
}

/**
 * Perform single sign-on for a given instance of a product/service.
 *
 * Called when single sign-on is requested for an instance of a product/service.
 *
 * When successful, returns a URL to which the user should be redirected.
 *
 * @param array $params common module parameters
 *
 * @see https://developers.whmcs.com/provisioning-modules/module-parameters/
 *
 * @return array
 */
function provisioningmodule_ServiceSingleSignOn(array $params)
{
    try {
        // Call the service's single sign-on token retrieval function, using the
        // values provided by WHMCS in `$params`.
        $response = array();

        return array(
            'success' => true,
            'redirectTo' => $response['redirectUrl'],
        );
    } catch (Exception $e) {
        // Record the error in WHMCS's module log.
        logModuleCall(
            'provisioningmodule',
            __FUNCTION__,
            $params,
            $e->getMessage(),
            $e->getTraceAsString()
        );

        return array(
            'success' => false,
            'errorMsg' => $e->getMessage(),
        );
    }
}

/**
 * Perform single sign-on for a server.
 *
 * Called when single sign-on is requested for a server assigned to the module.
 *
 * This differs from ServiceSingleSignOn in that it relates to a server
 * instance within the admin area, as opposed to a single client instance of a
 * product/service.
 *
 * When successful, returns a URL to which the user should be redirected to.
 *
 * @param array $params common module parameters
 *
 * @see https://developers.whmcs.com/provisioning-modules/module-parameters/
 *
 * @return array
 */
function provisioningmodule_AdminSingleSignOn(array $params)
{
    try {
        // Call the service's single sign-on admin token retrieval function,
        // using the values provided by WHMCS in `$params`.
        $response = array();

        return array(
            'success' => true,
            'redirectTo' => $response['redirectUrl'],
        );
    } catch (Exception $e) {
        // Record the error in WHMCS's module log.
        logModuleCall(
            'provisioningmodule',
            __FUNCTION__,
            $params,
            $e->getMessage(),
            $e->getTraceAsString()
        );

        return array(
            'success' => false,
            'errorMsg' => $e->getMessage(),
        );
    }
}

/**
 * Client area output logic handling.
 *
 * This function is used to define module specific client area output. It should
 * return an array consisting of a template file and optional additional
 * template variables to make available to that template.
 *
 * The template file you return can be one of two types:
 *
 * * tabOverviewModuleOutputTemplate - The output of the template provided here
 *   will be displayed as part of the default product/service client area
 *   product overview page.
 *
 * * tabOverviewReplacementTemplate - Alternatively using this option allows you
 *   to entirely take control of the product/service overview page within the
 *   client area.
 *
 * Whichever option you choose, extra template variables are defined in the same
 * way. This demonstrates the use of the full replacement.
 *
 * Please Note: Using tabOverviewReplacementTemplate means you should display
 * the standard information such as pricing and billing details in your custom
 * template or they will not be visible to the end user.
 *
 * @param array $params common module parameters
 *
 * @see https://developers.whmcs.com/provisioning-modules/module-parameters/
 *
 * @return array
 */
function provisioningmodule_ClientArea(array $params)
{
    // Determine the requested action and set service call parameters based on
    // the action.
    $requestedAction = isset($_REQUEST['customAction']) ? $_REQUEST['customAction'] : '';

    if ($requestedAction == 'manage') {
        $serviceAction = 'get_usage';
        $templateFile = 'templates/manage.tpl';
    } else {
        $serviceAction = 'get_stats';
        $templateFile = 'templates/overview.tpl';
    }

    try {
        // Call the service's function based on the request action, using the
        // values provided by WHMCS in `$params`.
        $response = array();

        $extraVariable1 = 'abc';
        $extraVariable2 = '123';

        return array(
            'tabOverviewReplacementTemplate' => $templateFile,
            'templateVariables' => array(
                'extraVariable1' => $extraVariable1,
                'extraVariable2' => $extraVariable2,
            ),
        );
    } catch (Exception $e) {
        // Record the error in WHMCS's module log.
        logModuleCall(
            'provisioningmodule',
            __FUNCTION__,
            $params,
            $e->getMessage(),
            $e->getTraceAsString()
        );

        // In an error condition, display an error page.
        return array(
            'tabOverviewReplacementTemplate' => 'error.tpl',
            'templateVariables' => array(
                'usefulErrorHelper' => $e->getMessage(),
            ),
        );
    }
}