<?php

namespace App\Http\Controllers;

class FormPhpGenerator
{
    public function __construct()
    {
    }

    public function phpStart()
    {
        $php = '<?php '.PHP_EOL;

        //Check if the form is submitted or not.
        $php .=
    '
    if (empty($_POST)) {
        die("Permission denied.");
    }
    include_once("library/library.php");
    ini_set("display_errors", "0");
    '.PHP_EOL.PHP_EOL;

        return $php;
    }

    //TODO:Add validation as per form data.
    public function renderFormPhp()
    {
    }

    public function reCaptcha($secret)
    {
        $php =
            '
            $is_error = verifyReCaptcha(\''.$secret.'\', $_POST["g-recaptcha-response"]);
            if(!empty($is_error)){
                echo json_encode($is_error);
                exit;
            }'.PHP_EOL.PHP_EOL;

        return $php;
    }

    public function attachmentFields($elements)
    {
        $fields = [];
        if (! empty($elements)) {
            foreach ($elements as $element) {
                if ($element['type'] == 'file_upload' && $element['send_as_email_attachment'] == 1) {
                    $fields[] = $element['name'];
                }
            }
        }

        $php = '//check for send as attachment'.PHP_EOL;

        $php .= '
        $attachment_fields = json_decode(\''.json_encode($fields).'\', true);'.PHP_EOL;

        $php .= '$attachments = getAttachments($attachment_fields);'.PHP_EOL;

        return $php;
    }

    public function email($email_details, $smtp, $response_variable, $is_autoresponse = false, $signature_fields = [])
    {
        $php = '//Sending email Start';

        //Initialise variables. TODO: Make variable names as dynamic.
        $php .= '
        $smtp = json_decode(\''.json_encode($smtp).'\', true);

        $email_details = json_decode(\''.json_encode($email_details).'\', true);'.PHP_EOL.PHP_EOL;

        //If auto-response then Get email "TO" value from users input
        if ($is_autoresponse) {
            $php .= '
            $email_details["to"] = !empty($_POST["fields"][$email_details["to"]]) ? $_POST["fields"][$email_details["to"]] : $email_details["from"];'.PHP_EOL.PHP_EOL;
        }

        //Replace tags from subject, body
        $php .=
        '$temp = replaceTags($_POST["fields"], array("subject" => $email_details["subject"], "body" => $email_details["body"]), json_decode(\''.json_encode($signature_fields).'\', true));

        $email_details["subject"] = $temp["subject"];
        $email_details["body"] = $temp["body"];
        '.PHP_EOL.PHP_EOL;

        //Send email.
        $php .= $response_variable.' = sendEmail($email_details, $smtp, $attachments);'.PHP_EOL.PHP_EOL;

        $php .= '//Sending email Start End'.PHP_EOL.PHP_EOL;

        return $php;
    }

    public function phpEnd($notification, $email_variable)
    {
        $php =
    'if( '.$email_variable.' ){'.PHP_EOL;

        //For display message
        if (empty($notification['post_submit_action']) || $notification['post_submit_action'] == 'same_page') {
            $php .=
        '$output = array("success" => 1, 
                    "redirect" => 0, 
                    "msg" => "'.$notification['success_msg'].'"
                );'.PHP_EOL;
        }

        //For redirect
        if ($notification['post_submit_action'] == 'redirect') {
            $php .=
        '$output = array("success" => 1, 
                        "redirect" => 1, 
                        "url" => "'.$notification['redirect_url'].
                    '");'.PHP_EOL;
        }

        $php .=
        'echo json_encode($output); exit;
    } else {'.PHP_EOL;

        $php .=
        '$output = array("success" => 0, 
                    "error" => "Email error",
                    "msg" => "'.$notification['failed_msg'].'",
                );
            echo json_encode($output); exit;'.PHP_EOL;
        $php .= '}
?>';

        return $php;
    }

    public function databaseIntegration($form_data)
    {
        if (isset($form_data['enable_database']) && ($form_data['enable_database'] == '1')) {
            // $php =
            // 'if( $email_sent ){' . PHP_EOL;
            $php = 'try{
                    require_once ("config.php");'.PHP_EOL;
            $php .= '$db_data = array();'.PHP_EOL;
            if (! empty($form_data['db_data'])) {
                foreach ($form_data['db_data'] as $db_data) {
                    $column = $db_data['column'];
                    $col_val = $db_data['value'];
                    $php .= '$db_data["'.$column.'"] = "'.$col_val.'";'.PHP_EOL;
                }
            }
            $php .=
                '$insert_data = array();
                foreach( $db_data as $col => $col_val){
                    foreach($_POST["fields"] as $key => $value){
                        if(is_array($value)){
                            $value = implode(" ,", $value);
                        }
                        $col_val = str_replace( "__" . $key . "__", htmlspecialchars( $value ) , $col_val);
                    }
                    $insert_data[$col] = $col_val;
                }'.PHP_EOL;
            $php .= 'if(!empty($insert_data)){
                        $insert_id = $db->insert ("'.$form_data['db_table'].'" , $insert_data);
                        if ($insert_id){
                            $db_msg = "Data inserted successfully";
                            $db_success = 1;
                        } else {
                            $db_msg = "Insert failed: " . $db->getLastError();
                            $db_success = 0;
                        }
                    }'.PHP_EOL;
            $php .= '}catch(Exception $e){
                $db_msg = "Database insert failed" . $e->getMessage();
                $db_success = 0;
            }'.PHP_EOL;

            return $php;
        } else {
            return '';
        }
    }

    public function generateDatabaseConfig($form_data)
    {
        if (isset($form_data['enable_database']) && ($form_data['enable_database'] == '1')) {
            $php =
            '<?php'.PHP_EOL;

            $php .= 'require_once ("MysqliDb.php");'.PHP_EOL;
            $php .= '$db = new MysqliDb ( "'.$form_data['db_host'].'", "'.$form_data['db_username'].'", "'.$form_data['db_password'].'", "'.$form_data['db_name'].'" );'.PHP_EOL;
            $php .= '?>';

            return $php;
        } else {
            return '';
        }
    }
}