var oAppEnablementCommonInstance = new comGkSoftwareGkrAppEnablementApi.Common();
var oAppEnablementPosInstance = new comGkSoftwareGkrAppEnablementApi.Pos();
var oAppEnablementPosEXTInstance = new comGkSoftwareGkrAppEnablementApi.Pos_EXT();

async function searchCompany() {
    const country = document.getElementById("country").value;
    const vatNumber = document.getElementById("vat_number").value.trim();
    const status = document.getElementById("status");

    if (!country || !vatNumber) {
        status.textContent = "Please enter a country and VAT number.";
        return;
    }

    status.textContent = "Searching...";

    try {
        const response = await fetch(
            `/api/company_lookup?country=${encodeURIComponent(country)}&vat_number=${encodeURIComponent(vatNumber)}`
        );

        const data = await response.json();

        if (!response.ok) {
            status.textContent = data.error || "Lookup failed.";
            return;
        }

        document.getElementById("company_name").value = data.name || "";
        document.getElementById("street").value = data.street || "";
        document.getElementById("zip").value = data.zip || "";
        document.getElementById("city").value = data.city || "";

        let message = data.found ? `Found via ${data.source}.` : "No company found. Search different or enter manually";

        if (data.warning) {
            message += `\nWarning: ${data.warning}`;
        }

        if (data.fallback_error) {
            message += `\nFallback error: ${data.fallback_error}`;
        }

        status.textContent = message;
    } catch (error) {
        status.textContent = "Request failed: " + error;
    }
}

function saveData() {
    const payload = {
        country: document.getElementById("country").value,
        vat_number: document.getElementById("vat_number").value.trim(),
        company_name: document.getElementById("company_name").value.trim(),
        street: document.getElementById("street").value.trim(),
        zip: document.getElementById("zip").value.trim(),
        city: document.getElementById("city").value.trim(),
        email: document.getElementById("email").value.trim(),
        phone: document.getElementById("phone").value.trim()
    };

    alert(JSON.stringify(payload, null, 2));


    var customer = {
        "customerId":"17600703312990"
    }
    var oRegisterCustomerRequest = JSON.stringify(customer)
    oAppEnablementPosInstance.registerCustomer('registerDataOk', 'registerDataFailed', oRegisterCustomerRequest);

}

function clearForm() {
    document.getElementById("vat_number").value = "";
    document.getElementById("company_name").value = "";
    document.getElementById("street").value = "";
    document.getElementById("zip").value = "";
    document.getElementById("city").value = "";
    document.getElementById("email").value = "";
    document.getElementById("phone").value = "";

    document.getElementById("status").textContent = "Cleared.";
}

function updateVatPlaceholder() {
    const country = document.getElementById("country").value;
    const vatInput = document.getElementById("vat_number");

    if (country === "HR") {
        vatInput.placeholder = "VAT number (11 digits)";
    } else {
        vatInput.placeholder = "VAT number (10 digits)";
    }
}

function closeBrowser() {
    oAppEnablementCommonInstance.closeBrowser();
}

// customer registration - uses standard Pos

function registerLoyaltyCall(customerId) {
    var request = JSON.stringify({
        "customerId": customerId,
        "customerServiceTypeCode": null,
        "preferredReceiptPrintoutTypeCode": null
    });
    
    oAppEnablementPosInstance.registerCustomer(
        'onSuccess', 
        'onError', 
        request
    );
}

// Callback functions
function onSuccess(result) {
    document.getElementById("status").textContent = "Thank you.";
    closeBrowser();
}

function onError(error) {
    document.getElementById("status").textContent = "Company registration in receipt failed. Please try again.";
}

document.getElementById("country").addEventListener("change", updateVatPlaceholder);
window.addEventListener("DOMContentLoaded", updateVatPlaceholder);