<?php

namespace BitCode\BitForm\Core\Integration;

use BitCode\BitForm\Core\Util\MailNotifier;
use BitCode\BitForm\Core\Database\IntegrationModel;
use BitCode\BitForm\Core\Database\FormEntryLogModel;


final class IntegrationHandler
{
    private static $_formID;
    private static $_integrationModel;
    private $_user_details;

    /**
     * Constructor of Integration Handler
     *
     * @param  Integer $formID       If Integration is accessible globally then
     *                               $formID will be 0 and category app
     * @param  Array   $user_details Details of user accessing data
     * @return void
     */
    public function __construct($formID, $user_details = null)
    {
        static::$_formID = $formID;
        static::$_integrationModel = new IntegrationModel();
        $this->_user_details = $user_details;
    }


    public function getAIntegration($integrationID, $integrationCategory = null, $integrationType = null)
    {
        $conditions = array(
            'form_id' => static::$_formID,
            'id' => $integrationID,
        );
        if (!is_null($integrationType)) {
            $conditions = array_merge($conditions, ['integration_type' => $integrationType]);
        }
        if (!is_null($integrationCategory)) {
            $conditions = array_merge($conditions, ['category' => $integrationCategory]);
        }
        return static::$_integrationModel->get(
            array(
                'id',
                'integration_name',
                'integration_type',
                'integration_details'
            ),
            $conditions
        );
    }

    public function getAllIntegration($integrationCategory = null, $integrationType = null, $status = null)
    {
        $conditions = array(
            'form_id' => static::$_formID
        );
        if (!is_null($integrationType)) {
            $conditions = array_merge($conditions, ['integration_type' => $integrationType]);
        }

        if (!is_null($integrationCategory)) {
            $conditions = array_merge($conditions, ['category' => $integrationCategory]);
        }
        if (!is_null($status)) {
            $conditions = array_merge($conditions, ['status' => 1]);
        }
        return static::$_integrationModel->get(
            array(
                'id',
                'integration_name',
                'integration_type',
                'integration_details',
                'status'
            ),
            $conditions
        );
    }

    public function saveIntegration($integrationName, $integrationType, $integrationDetails, $integrationCategory, $status = null)
    {
        if ($status == null) {
            $status = 1;
        }
        return static::$_integrationModel->insert(
            array(
                "integration_name" => $integrationName,
                "integration_type" => $integrationType,
                "integration_details" => $integrationDetails,
                'category' => $integrationCategory,
                'form_id' => static::$_formID,
                "user_id" => $this->_user_details['id'],
                "user_ip" => $this->_user_details['ip'],
                "status" => $status,
                "created_at" => $this->_user_details['time'],
                "updated_at" => $this->_user_details['time']
            )
        );
    }

    public function updateIntegration($integrationID, $integrationName, $integrationType, $integrationDetails, $integrationCategory, $status = null)
    {
        if ($status == null) {
            $status = 1;
        }
        return static::$_integrationModel->update(
            array(
                "integration_name" => $integrationName,
                "integration_type" => $integrationType,
                "integration_details" => $integrationDetails,
                'category' => $integrationCategory,
                'form_id' => static::$_formID,
                "user_id" => $this->_user_details['id'],
                "user_ip" => $this->_user_details['ip'],
                "status" => $status,
                "updated_at" => $this->_user_details['time']
            ),
            array(
                "id" => $integrationID
            )
        );
    }

    public function duplicateAllInAForm($oldFormId)
    {
        $integCols = ["integration_name", "integration_type", "integration_details", 'category', 'form_id', "user_id", "user_ip", "status", "created_at", "updated_at"];
        $integDupData = array(
            "integration_name",
            "integration_type",
            "integration_details",
            'category',
            static::$_formID,
            $this->_user_details['id'],
            $this->_user_details['ip'],
            "status",
            $this->_user_details['time'],
            $this->_user_details['time']
        );
        return static::$_integrationModel->duplicate($integCols, $integDupData, ['form_id' => $oldFormId]);
    }

    public function deleteIntegration($integrationID)
    {
        return static::$_integrationModel->delete(
            array(
                'id' => $integrationID,
                'form_id' => static::$_formID,
            )
        );
    }

    public static function replaceFieldWithValue($dataToReplaceField, $fieldValues)
    {
        if (empty($dataToReplaceField)) {
            return false;
        }
        if (is_string($dataToReplaceField)) {
            $dataToReplaceField = static::replaceFieldWithValueHelper($dataToReplaceField, $fieldValues);
        } elseif (is_array($dataToReplaceField)) {
            foreach ($dataToReplaceField as $field => $value) {
                if (is_array($value) && count($value) === 1) {
                    $dataToReplaceField[$field] = static::replaceFieldWithValueHelper($value[0], $fieldValues);
                } elseif (is_array($value)) {
                    $dataToReplaceField[$field] = static::replaceFieldWithValue($value, $fieldValues);
                } else {
                    $dataToReplaceField[$field] = static::replaceFieldWithValueHelper($value, $fieldValues);
                }
            }
        }
        return $dataToReplaceField;
    }

    private static function replaceFieldWithValueHelper($stringToReplaceField, $fieldValues)
    {
        if (empty($stringToReplaceField)) {
            return $stringToReplaceField;
        }
        $fieldPattern = '/\${\w[^ ${}]*}/';
        preg_match_all($fieldPattern, $stringToReplaceField, $matchedField);
        $uniqueFieldsInStr = array_unique($matchedField[0]);
        foreach ($uniqueFieldsInStr as $key => $value) {
            $fieldName = substr($value, 2, strlen($value) - 3);
            if (!empty($fieldValues[$fieldName])) {
                $stringToReplaceField = is_string($fieldValues[$fieldName]) ? str_replace($value, $fieldValues[$fieldName], $stringToReplaceField) :
                    wp_json_encode($fieldValues[$fieldName]);
            }
        }
        return $stringToReplaceField;
    }

    public static function maybeSetCronForIntegration($workFlowReturnedData, $opType)
    {
        $responseData = [];
        if (isset($workFlowReturnedData['message'])) {
            $responseData['message'] = $workFlowReturnedData['message'];
        }
        if (isset($workFlowReturnedData['redirectPage'])) {
            $responseData['redirectPage'] = $workFlowReturnedData['redirectPage'];
        }
        if ($opType === 'update' && isset($workFlowReturnedData['updatedData'])) {
            $responseData['updatedData'] = $workFlowReturnedData['updatedData'];
        }
        if (!isset($workFlowReturnedData['triggerData'])) {
            return $responseData;
        }
        $triggerData = $workFlowReturnedData['triggerData'];
        if (function_exists('fastcgi_finish_request') ||  !wp_doing_ajax()) {
            if (!headers_sent()) {
                header("Connection: close");
                $contentType = wp_doing_ajax() || defined('REST_REQUEST') ? "application/json" : "text/html";
                header('Content-Type: '. $contentType .'; charset=' . get_option('blog_charset'));
                status_header(200);
                $response = array(
                    'success' => true,
                    'data' => $responseData,
                );
            }
            ob_start();
            echo wp_doing_ajax() || defined('REST_REQUEST') ? wp_json_encode($response) : $workFlowReturnedData['message'];
            ob_end_flush();
            flush();
            session_write_close();
            if (function_exists('fastcgi_finish_request')) {
                fastcgi_finish_request();
            }

            if (isset($triggerData['mail'])) {
                foreach ($triggerData['mail'] as $value) {
                    MailNotifier::notify($value, $triggerData['formID'], $workFlowReturnedData['fields'], $triggerData['entryID']);
                }
            }
            do_action("bitforms_exec_integrations", $triggerData['integrations'], $workFlowReturnedData['fields'], $triggerData['formID'], $triggerData['entryID'], $triggerData['logID']);
            if (defined('REST_REQUEST') || wp_doing_ajax()) {
                die;
            }
            return $workFlowReturnedData;
        }

        $entryID = $triggerData['entryID'];
        if (isset($workFlowReturnedData['cron']) && $workFlowReturnedData['cron'] && !isset($triggerData['mail'])) {
            $eventScheuled = wp_schedule_single_event(time(), "bitforms_exec_integrations", array($triggerData['integrations'], $workFlowReturnedData['fields'], $triggerData['formID'], $triggerData['entryID'], $triggerData['logID']));
            $scheduleTime = wp_next_scheduled("bitforms_exec_integrations", array($triggerData['integrations'], $workFlowReturnedData['fields'], $triggerData['formID'], $triggerData['entryID'], $triggerData['logID']));
            $responseData['cron'] = get_site_url(null, "/wp-cron.php?doing_wp_cron&{$scheduleTime}");
        } else if (!empty($triggerData['integrations']) || !empty($triggerData['mail'])) {
            $triggerData['fields'] = $workFlowReturnedData['fields'];
            set_transient("bitform_trigger_transient_{$entryID}", $triggerData, HOUR_IN_SECONDS);
            $entryLog = new FormEntryLogModel();
            $queueuEntry = $entryLog->log_history_insert(
                array(
                    "log_id" => $triggerData['logID'],
                    "integration_id" => 0,
                    "api_type" =>  wp_json_encode(["type" => "trigger", "type_name" => "Workflow", "on" => $opType]),
                    "response_type" => "queued",
                    "response_obj" => json_encode(['status' => 'queued']),
                    "created_at" => current_time("mysql"),
                )
            );
            $responseData['cronNotOk'] = [
                $triggerData['entryID'],
                $triggerData['logID'],
                $queueuEntry
            ];
        }

        return $responseData;
    }
}