let calculatedFLI = null;

// ========== AUTO CAPTURE LOCATION ==========
$.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("");
    });
});

// ===========================================
//            FLI CALCULATION
// ===========================================
function calculateFLI() {
    const triglycerides = parseFloat($('#triglycerides').val());
    const bmi = parseFloat($('#bmi').val());
    const ggt = parseFloat($('#ggt').val());
    const waist = parseFloat($('#waist').val());
    const resultEl = $('#result');

    if (!triglycerides || !bmi || !ggt || !waist) {
        resultEl.removeClass().html('<div class="text-center" style="color:#dc3545;margin-top:10px;">⚠️ Please fill in all values.</div>');
        return;
    }

    const logTrig = Math.log(triglycerides);
    const logGGT = Math.log(ggt);
    const exponent = 0.953 * logTrig + 0.139 * bmi + 0.718 * logGGT + 0.053 * waist - 15.745;
    const fli = (Math.exp(exponent) / (1 + Math.exp(exponent))) * 100;

    calculatedFLI = parseFloat(fli.toFixed(1));

    // check stored flag
    if (localStorage.getItem("fliFormSubmitted") === "true") {
        showFLIResult();
    } else {
        $('#emailModal').modal('show');
    }
}

// ===========================================
//          DISPLAY RESULT
// ===========================================
function showFLIResult() {
    const value = calculatedFLI;
    const resultEl = $('#result');

    let cls = "";
    let msg = "";

    if (value < 30) {
        cls = "category-low";
        msg = `<p>Fatty Liver Index (FLI): <strong>${value}</strong></p>
               <small>Low risk of fatty liver.</small>`;
    } else if (value >= 30 && value <= 60) {
        cls = "category-moderate";
        msg = `<p>Fatty Liver Index (FLI): <strong>${value}</strong></p>
               <small>Moderate risk — consider lifestyle modification.</small>`;
    } else {
        cls = "category-high";
        msg = `<p>Fatty Liver Index (FLI): <strong>${value}</strong></p>
               <small>High risk — clinical evaluation advised.</small>`;
    }

    resultEl.removeClass().addClass("result " + cls).html(msg);
}

// ===========================================
//      FORM SUBMISSION → PIPEDRIVE
// ===========================================
$('#pipedriveForm').on('submit', async function(e) {
    e.preventDefault();

    if (localStorage.getItem("fliFormSubmitted") === "true") {
        alert("You have already submitted the form.");
        return;
    }

    const email = $("#email").val().trim();
    const captcha = grecaptcha.getResponse();

    if (!email) {
        alert("Please enter a valid email.");
        return;
    }
    if (!captcha) {
        alert("Please complete reCAPTCHA.");
        return;
    }

    const submitBtn = $(this).find("button");
    submitBtn.prop("disabled", true).text("Submitting...");

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

    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("fliFormSubmitted", "true");
        $('#emailModal').modal('hide');
        grecaptcha.reset();

        showFLIResult();

    } catch (err) {
        console.error(err);
        alert("Something went wrong.");
    } finally {
        submitBtn.text("Submitted ✔").prop("disabled", true);
    }
});