<?php 
    session_start();
    require '../../../assets/utils/db_auth.php';
    require '../../../assets/utils/classes/FileUploader.php';

    $id = (int)$data['id'];

    try {
        /** 1. FILE HANDLING **/
        $uploader = new FileUploader($include_url . "uploads/contact/");

        // Cleanup deleted files
        if ($id > 0) {
            $sql = "SELECT `contact_image` FROM md_contact WHERE company_id = :company_id AND id = :id";
            $sth = $pdo2->prepare($sql);
            $sth->execute([":company_id" => $company_id, ":id" => $id]);
            $uploader->cleanup($sth->fetchColumn(), $data['keep_files'] ?? '');
        }

        // Upload new files
        $errors = $uploader->upload('contact_image');
        if (!empty($errors)) {
            $answer["success"] = 0;
            $answer["message"] = $errors[0];
            exit(json_encode($answer));
        }

        $db_image_string = $uploader->buildFileString($data['keep_files'] ?? '');

        /** 2. DATABASE **/
        dbTransaction($pdo2, function($pdo) use ($data, $company_id, $logging, $id, $db_image_string) {

            $sql = "SELECT `log` FROM md_contact
                    WHERE company_id = :company_id AND id = :id";
            $sth = $pdo->prepare($sql);
            $sth->execute([
                ":company_id" => $company_id,
                ":id" => $id
            ]);

            $table_log = json_decode($sth->fetchColumn() ?: '[]', true);
            if (!is_array($table_log)) $table_log = [];
            $table_log[] = $logging;

            $params = [
                ":company_id"       => $company_id,
                ":contact_name"     => $data["contact_name"],
                ":tax_id"           => $data["tax_id"],
                ":organization"     => $data["organization"],
                ":branch"           => $data["branch"],
                ":contact_type"     => (int)$data["contact_type"],
                ":billing_address"  => $data["billing_address"],
                ":shipping_location"=> $data["shipping_location"],
                ":shipping_address" => $data["shipping_address"],
                ":remark"           => $data["remark"],
                ":contact_image"            => $db_image_string,
                ":status"           => (int)$data["status"],
                ":log"              => json_encode($table_log),
            ];

            if ($id > 0) {
                $sql = "UPDATE md_contact SET
                            `contact_name`      = :contact_name,
                            `tax_id`            = :tax_id,
                            `organization`      = :organization,
                            `branch`            = :branch,
                            `contact_type`      = :contact_type,
                            `billing_address`   = :billing_address,
                            `shipping_location` = :shipping_location,
                            `shipping_address`  = :shipping_address,
                            `remark`            = :remark,
                            `contact_image`             = :contact_image,
                            `status`            = :status,
                            `log`               = :log
                        WHERE id = :id AND company_id = :company_id";
                $params[":id"] = $id;
            } else {
                $sql = "INSERT INTO md_contact 
                        (company_id, contact_name, tax_id, organization, branch, contact_type, 
                        billing_address, shipping_location, shipping_address, remark, contact_image, status, log) 
                        VALUES 
                        (:company_id, :contact_name, :tax_id, :organization, :branch, :contact_type, 
                        :billing_address, :shipping_location, :shipping_address, :remark, :contact_image, :status, :log)";
            }

            $sth = $pdo->prepare($sql);
            $sth->execute($params);

        });

        $answer["success"] = 1;

    } catch (PDOException $e) {
        // DB failed — rollback uploaded files
        if (isset($uploader)) $uploader->rollbackUploads();
        $answer["success"] = 0;
        $answer["message"] = "Database error, please try again";
        http_response_code(500);

    } catch (Exception $e) {
        if (isset($uploader)) $uploader->rollbackUploads();
        $answer["success"] = 0;
        $answer["message"] = $e->getMessage();
        http_response_code(400);
    }

    exit(json_encode($answer));
?>