(function () {
  'use strict';

  var config = window.kgvCookieConfig || {};
  var cookieName = config.cookieName || 'kgv_cookie_consent';

  function setCookie(name, value, days) {
    var expires = '';
    if (days) {
      var date = new Date();
      date.setTime(date.getTime() + days * 24 * 60 * 60 * 1000);
      expires = '; expires=' + date.toUTCString();
    }
    document.cookie = name + '=' + encodeURIComponent(value) + expires + '; path=/; SameSite=Lax';
  }

  function getCookie(name) {
    var nameEQ = name + '=';
    var ca = document.cookie.split(';');
    for (var i = 0; i < ca.length; i++) {
      var c = ca[i];
      while (c.charAt(0) === ' ') {
        c = c.substring(1, c.length);
      }
      if (c.indexOf(nameEQ) === 0) {
        return decodeURIComponent(c.substring(nameEQ.length, c.length));
      }
    }
    return '';
  }

  function publishConsent(value) {
    window.KGVCookieConsent = value;
    window.dispatchEvent(new CustomEvent('kgvCookieConsentChanged', { detail: { value: value } }));
  }

  function hasConsent(type) {
    var current = getCookie(cookieName);
    if (!current) {
      return false;
    }
    if (current === 'all') {
      return true;
    }
    return type === 'essential' && current === 'essential';
  }

  function init() {
    var banner = document.getElementById('kgv-cookie-banner');
    if (!banner) {
      return;
    }

    window.KGVCookie = {
      getConsent: function () {
        return getCookie(cookieName);
      },
      hasConsent: hasConsent,
      reopen: function () {
        banner.hidden = false;
        banner.classList.add('is-visible');
      }
    };

    var current = getCookie(cookieName);
    if (!current) {
      banner.hidden = false;
      banner.classList.add('is-visible');
    } else {
      publishConsent(current);
    }

    document.addEventListener('click', function (event) {
      var trigger = event.target.closest('[data-kgv-cookie]');
      if (!trigger) {
        return;
      }

      var action = trigger.getAttribute('data-kgv-cookie');
      if (action === 'accept-all') {
        setCookie(cookieName, 'all', 365);
        publishConsent('all');
        banner.classList.remove('is-visible');
        banner.hidden = true;
      }

      if (action === 'essential-only') {
        setCookie(cookieName, 'essential', 365);
        publishConsent('essential');
        banner.classList.remove('is-visible');
        banner.hidden = true;
      }

      if (action === 'reopen') {
        banner.hidden = false;
        banner.classList.add('is-visible');
      }
    });
  }

  document.addEventListener('DOMContentLoaded', init);
})();