<?php

/**
 * ZohoCampaigns Integration
 *
 */

namespace BitCode\BitFormPro\Integration\ZohoCampaigns;

use BitCode\BitForm\Core\Util\IpTool;
use BitCode\BitForm\Core\Util\HttpHelper;
use BitCode\BitForm\Core\Integration\IntegrationHandler;
use BitCode\BitFormPro\Integration\ZohoCampaigns\RecordApiHelper;
use BitCode\BitForm\Core\Util\ApiResponse as UtilApiResponse;

/**
 * Provide functionality for ZohoCrm integration
 */
class ZohoCampaignsHandler
{
    private $_formID;
    private $_integrationID;

    private $_logResponse;

    public function __construct($integrationID, $fromID)
    {
        $this->_formID = $fromID;
        $this->_integrationID = $integrationID;
        $this->_logResponse = new UtilApiResponse();
    }

    /**
     * Helps to register ajax function's with wp
     *
     * @return null
     */
    public static function registerAjax()
    {
        add_action('wp_ajax_bitforms_zcampaigns_generate_token', array(__CLASS__, 'generateTokens'));
        add_action('wp_ajax_bitforms_zcampaigns_refresh_lists', array(__CLASS__, 'refreshListsAjaxHelper'));
        add_action('wp_ajax_bitforms_zcampaigns_refresh_contact_fields', array(__CLASS__, 'refreshContactFieldsAjaxHelper'));
    }

    /**
     * Process ajax request for generate_token
     *
     * @return JSON zoho crm api response and status
     */
    public static function generateTokens()
    {
        if (isset($_REQUEST['_ajax_nonce']) && wp_verify_nonce($_REQUEST['_ajax_nonce'], 'bitforms_save')) {
            $inputJSON = file_get_contents('php://input');
            $requestsParams = json_decode($inputJSON);
            if (
                empty($requestsParams->{'accounts-server'})
                || empty($requestsParams->dataCenter)
                || empty($requestsParams->clientId)
                || empty($requestsParams->clientSecret)
                || empty($requestsParams->redirectURI)
                || empty($requestsParams->code)
            ) {
                wp_send_json_error(
                    __(
                        'Requested parameter is empty',
                        'bitformpro'
                    ),
                    400
                );
            }

            $apiEndpoint = \urldecode($requestsParams->{'accounts-server'}) . '/oauth/v2/token';
            $requestParams = array(
                "grant_type" => "authorization_code",
                "client_id" => $requestsParams->clientId,
                "client_secret" => $requestsParams->clientSecret,
                "redirect_uri" => \urldecode($requestsParams->redirectURI),
                "code" => $requestsParams->code
            );
            $apiResponse = HttpHelper::post($apiEndpoint, $requestParams);

            if (is_wp_error($apiResponse) || !empty($apiResponse->error)) {
                wp_send_json_error(
                    empty($apiResponse->error) ? 'Unknown' : $apiResponse->error,
                    400
                );
            }
            $apiResponse->generates_on = \time();
            wp_send_json_success($apiResponse, 200);
        } else {
            wp_send_json_error(
                __(
                    'Token expired',
                    'bitformpro'
                ),
                401
            );
        }
    }
    /**
     * Process ajax request for refresh crm modules
     *
     * @return JSON crm module data
     */
    public static function refreshListsAjaxHelper()
    {
        if (isset($_REQUEST['_ajax_nonce']) && wp_verify_nonce($_REQUEST['_ajax_nonce'], 'bitforms_save')) {
            $authorizationHeader = null;
            $inputJSON = file_get_contents('php://input');
            $queryParams = json_decode($inputJSON);
            if (
                empty($queryParams->tokenDetails)
                || empty($queryParams->dataCenter)
                || empty($queryParams->clientId)
                || empty($queryParams->clientSecret)
            ) {
                wp_send_json_error(
                    __(
                        'Requested parameter is empty',
                        'bitformpro'
                    ),
                    400
                );
            }
            $response = [];
            if ((intval($queryParams->tokenDetails->generates_on) + (55 * 60)) < time()) {
                $response['tokenDetails'] = ZohoCampaignsHandler::_refreshAccessToken($queryParams);
            }

            $listsMetaApiEndpoint = "https://campaigns.zoho.{$queryParams->dataCenter}/api/v1.1/getmailinglists?resfmt=JSON&range=100";

            $authorizationHeader["Authorization"] = "Zoho-oauthtoken {$queryParams->tokenDetails->access_token}";
            $listsMetaResponse = HttpHelper::get($listsMetaApiEndpoint, null, $authorizationHeader);

            $allLists = [];
            if (!is_wp_error($listsMetaResponse)) {
                $lists = $listsMetaResponse->list_of_details;

                if (count($lists) > 0) {
                    foreach ($lists as $list) {
                        $allLists[$list->listname] = (object) array(
                            'listkey' => $list->listkey,
                            'listname' => $list->listname
                        );
                    }
                }
                uksort($allLists, 'strnatcasecmp');
                $response['lists'] = $allLists;
            } else {
                wp_send_json_error(
                    empty($listsMetaResponse->data) ? 'Unknown' : $listsMetaResponse->error,
                    400
                );
            }
            if (!empty($response['tokenDetails']) && !empty($queryParams->id)) {
                ZohoCampaignsHandler::_saveRefreshedToken($queryParams->formID, $queryParams->id, $response['tokenDetails'], $response['lists']);
            }
            wp_send_json_success($response, 200);
        } else {
            wp_send_json_error(
                __(
                    'Token expired',
                    'bitformpro'
                ),
                401
            );
        }
    }

    /**
     * Process ajax request for refesh crm layouts
     *
     * @return JSON crm layout data
     */
    public static function refreshContactFieldsAjaxHelper()
    {
        if (isset($_REQUEST['_ajax_nonce']) && wp_verify_nonce($_REQUEST['_ajax_nonce'], 'bitforms_save')) {
            $authorizationHeader = null;
            $inputJSON = file_get_contents('php://input');
            $queryParams = json_decode($inputJSON);
            if (
                empty($queryParams->list)
                || empty($queryParams->tokenDetails)
                || empty($queryParams->dataCenter)
                || empty($queryParams->clientId)
                || empty($queryParams->clientSecret)
            ) {
                wp_send_json_error(
                    __(
                        'Requested parameter is empty',
                        'bitformpro'
                    ),
                    400
                );
            }
            $response = [];
            if ((intval($queryParams->tokenDetails->generates_on) + (55 * 60)) < time()) {
                $response['tokenDetails'] = ZohoCampaignsHandler::_refreshAccessToken($queryParams);
            }

            $contactFieldsMetaApiEndpoint = "https://campaigns.zoho.{$queryParams->dataCenter}/api/v1.1/contact/allfields?type=json";

            $authorizationHeader["Authorization"] = "Zoho-oauthtoken {$queryParams->tokenDetails->access_token}";
            $contactFieldsMetaResponse = HttpHelper::get($contactFieldsMetaApiEndpoint, null, $authorizationHeader);


            if (!is_wp_error($contactFieldsMetaResponse)) {
                $allFields = [];
                $fields = $contactFieldsMetaResponse->response->fieldnames->fieldname;

                if (count($fields) > 0) {
                    foreach ($fields as $field) {
                        $allFields[] = $field->DISPLAY_NAME;
                    }
                }

                usort($allFields, 'strnatcasecmp');
                $response['fields'] = $allFields;

                $response['required'] = ['Contact Email'];
            } else {
                wp_send_json_error(
                    $contactFieldsMetaResponse->status === 'error' ? $contactFieldsMetaResponse->message : 'Unknown',
                    400
                );
            }
            if (!empty($response['tokenDetails']) && $response['tokenDetails'] && !empty($queryParams->id)) {
                $response["queryModule"] = $queryParams->module;
                ZohoCampaignsHandler::_saveRefreshedToken($queryParams->formID, $queryParams->id, $response['tokenDetails'], $response);
            }
            wp_send_json_success($response, 200);
        } else {
            wp_send_json_error(
                __(
                    'Token expired',
                    'bitformpro'
                ),
                401
            );
        }
    }

    /**
     * Helps to refresh zoho crm access_token
     *
     * @param  Array $apiData Contains required data for refresh access token
     * @return JSON  $tokenDetails API token details
     */
    protected static function _refreshAccessToken($apiData)
    {
        if (
            empty($apiData->dataCenter)
            || empty($apiData->clientId)
            || empty($apiData->clientSecret)
            || empty($apiData->tokenDetails)
        ) {
            return false;
        }
        $tokenDetails = $apiData->tokenDetails;

        $dataCenter = $apiData->dataCenter;
        $apiEndpoint = "https://accounts.zoho.{$dataCenter}/oauth/v2/token";
        $requestParams = array(
            "grant_type" => "refresh_token",
            "client_id" => $apiData->clientId,
            "client_secret" => $apiData->clientSecret,
            "refresh_token" => $tokenDetails->refresh_token,
        );

        $apiResponse = HttpHelper::post($apiEndpoint, $requestParams);
        if (is_wp_error($apiResponse) || !empty($apiResponse->error)) {
            return false;
        }
        $tokenDetails->generates_on = \time();
        $tokenDetails->access_token = $apiResponse->access_token;
        return $tokenDetails;
    }

    /**
     * Save updated access_token to avoid unnecessary token generation
     *
     * @param Integer $fromID        ID of Integration related form
     * @param Integer $integrationID ID of Zoho crm Integration
     * @param Obeject $tokenDetails  refreshed token info
     *
     * @return null
     */
    protected static function _saveRefreshedToken($formID, $integrationID, $tokenDetails, $others = null)
    {
        if (empty($formID) || empty($integrationID)) {
            return;
        }

        $integrationHandler = new IntegrationHandler($formID, IpTool::getUserDetail());
        $zcampaignsDetails = $integrationHandler->getAIntegration($integrationID);

        if (is_wp_error($zcampaignsDetails)) {
            return;
        }
        $newDetails = json_decode($zcampaignsDetails[0]->integration_details);

        $newDetails->tokenDetails = $tokenDetails;
        if (!empty($others['lists'])) {
            $newDetails->default->lists = $others['lists'];
        }
        if (!empty($others['fieds'])) {
            $newDetails->default->fields = $others['fields'];
        }
        if (!empty($others['required'])) {
            $newDetails->default->required = $others['required'];
        }


        $integrationHandler->updateIntegration($integrationID, $zcampaignsDetails[0]->integration_name, 'Zoho Campaigns', \json_encode($newDetails), 'form');
    }

    public function execute(IntegrationHandler $integrationHandler, $integrationData, $fieldValues, $entryID, $logID)
    {
        $integrationDetails = is_string($integrationData->integration_details) ? json_decode($integrationData->integration_details) : $integrationData->integration_details;

        $tokenDetails = $integrationDetails->tokenDetails;
        $list = $integrationDetails->list;
        $dataCenter = $integrationDetails->dataCenter;
        $fieldMap = $integrationDetails->field_map;
        $required = $integrationDetails->default->fields->{$list}->required;
        if (
            empty($tokenDetails)
            || empty($list)
            || empty($fieldMap)
        ) {
            $error = new WP_Error('REQ_FIELD_EMPTY', __('list are required for zoho campaigns api', 'bitformpro'));
            $this->_logResponse->apiResponse($logID, $this->_integrationID, 'record', 'validation', $error);
            return $error;
        }

        $requiredParams = null;
        if ((intval($tokenDetails->generates_on) + (55 * 60)) < time()) {
            $requiredParams['clientId'] = $integrationDetails->clientId;
            $requiredParams['clientSecret'] = $integrationDetails->clientSecret;
            $requiredParams['dataCenter'] = $integrationDetails->dataCenter;
            $requiredParams['tokenDetails'] = $tokenDetails;
            $newTokenDetails = ZohoCampaignsHandler::_refreshAccessToken((object)$requiredParams);
            if ($newTokenDetails) {
                ZohoCampaignsHandler::_saveRefreshedToken($this->_formID, $this->_integrationID, $newTokenDetails);
                $tokenDetails = $newTokenDetails;
            }
        }

        // $actions = $integrationDetails->actions;
        $recordApiHelper = new RecordApiHelper($tokenDetails, $this->_integrationID, $logID);

        $zcampaignsApiResponse = $recordApiHelper->executeRecordApi(
            $list,
            $dataCenter,
            $fieldValues,
            $fieldMap,
            $required
        );

        if (is_wp_error($zcampaignsApiResponse)) {
            return $zcampaignsApiResponse;
        }
        return $zcampaignsApiResponse;
    }
}
