let calculatedEGFR = null;

// ---------- Capture City + Country ----------
$.getJSON('https://api.db-ip.com/v2/free/self/', function (info) {
    $("#country").val(info.countryName || "");
    $("#city").val(info.city || "");
}).fail(function () {
    $.getJSON('https://ipinfo.io/json?token=36c49d56a01964', function (info) {
        $("#country").val(info.country || "");
        $("#city").val(info.city || "");
    }).fail(function () {
        $("#country").val("");
        $("#city").val("");
    });
});

// ------------------- Calculate eGFR -------------------
function calculateEGFR() {
    const scr = parseFloat($('#scr').val());
    const age = parseFloat($('#age').val());
    const gender = $('input[name="gender"]:checked').val();

    const errorEl = $('#error');
    const resultEl = $('#result');

    errorEl.text('');
    resultEl.html('').removeClass('category-normal category-low');
    $('.stage').removeClass('active');

    if (!scr || !age) {
        errorEl.text('⚠️ Please fill in all values.');
        return;
    }
    if (scr < 20 || scr > 1500) {
        errorEl.text('⚠️ Serum creatinine should be between 20–1500 µmol/L.');
        return;
    }
    if (age < 1 || age > 120) {
        errorEl.text('⚠️ Age must be between 1–120 years.');
        return;
    }

    let A, B, C;
    if (gender === 'female') {
        A = 61.9;
        B = (scr <= A) ? -0.329 : -1.209;
        C = 1.018;
    } else {
        A = 79.6;
        B = (scr <= A) ? -0.411 : -1.209;
        C = 1.0;
    }

    const egfr = 142 * Math.pow(scr / A, B) * Math.pow(0.9938, age) * C;
    calculatedEGFR = parseFloat(egfr.toFixed(2));

    // ⛔ If already submitted, show result directly
    if (localStorage.getItem('pipedriveFormSubmitted_eGFR') === 'true') {
        showEGFRResult();
    } else {
        $('#emailModal').modal('show');
    }
}

// ---------------- Show eGFR Result ----------------
function showEGFRResult() {
    const resultEl = $('#result');
    resultEl.removeClass('category-normal category-low');

    let message = "";
    let stageId = "";
    let category = "";

    if (calculatedEGFR >= 90) {
        message = `eGFR: ${calculatedEGFR} mL/min/1.73m²<br><small>Normal kidney function (Stage 1)</small>`;
        category = "category-normal";
        stageId = "stage1";
    } else if (calculatedEGFR >= 60) {
        message = `eGFR: ${calculatedEGFR} mL/min/1.73m²<br><small>Mild decrease (Stage 2)</small>`;
        category = "category-normal";
        stageId = "stage2";
    } else if (calculatedEGFR >= 30) {
        message = `eGFR: ${calculatedEGFR} mL/min/1.73m²<br><small>Moderate decrease (Stage 3)</small>`;
        category = "category-low";
        stageId = "stage3";
    } else if (calculatedEGFR >= 15) {
        message = `eGFR: ${calculatedEGFR} mL/min/1.73m²<br><small>Severe decrease (Stage 4)</small>`;
        category = "category-low";
        stageId = "stage4";
    } else {
        message = `eGFR: ${calculatedEGFR} mL/min/1.73m²<br><small>Kidney failure (Stage 5)</small>`;
        category = "category-low";
        stageId = "stage5";
    }

    resultEl.addClass(category).html(message);
    $('#' + stageId).addClass('active');
}

// ----------------- Submit Pipedrive Form -----------------
$('#pipedriveForm').on('submit', async function (e) {
    e.preventDefault();

    if (localStorage.getItem('pipedriveFormSubmitted_eGFR') === 'true') {
        alert("You have already submitted the form.");
        $('#emailModal').modal('hide');
        showEGFRResult();
        return;
    }

    const email = $('#email').val().trim();
    const captchaResponse = grecaptcha.getResponse();

    if (!email) {
        alert("Please enter your email.");
        return;
    }
    if (!captchaResponse) {
        alert("Please complete the reCAPTCHA.");
        return;
    }

    const data = {
        name: $("#name").val() || "",
        email: email || "",
        phone: $("#phone").val() || "",
        lab_name: $("#lab_name").val() || "",
        country: $("#country").val() || "",
        city: $("#city").val() || "",
        "g-recaptcha-response": captchaResponse || "",
        source: "Sales Tool"
    };

    try {
        await fetch("https://livehealth.solutions/v4/on-boarding/pipedrive_capture/", {
            method: "POST",
            mode: "no-cors",
            redirect: "follow",
            headers: { "Content-Type": "application/json" },
            body: JSON.stringify(data)
        });

        localStorage.setItem('pipedriveFormSubmitted_eGFR', 'true');

        $('#emailModal').modal('hide');
        grecaptcha.reset();

        showEGFRResult();
    } catch (err) {
        console.error(err);
        alert("Something went wrong. Please try again later.");
    }
});