(function () {
  function getBootstrapToast(toast) {
    if (!toast || !window.bootstrap || !window.bootstrap.Toast) {
      return null;
    }

    return window.bootstrap.Toast.getOrCreateInstance(toast, {
      autohide: true,
      delay: 4000
    });
  }

  function removeToast(toast) {
    if (toast && toast.parentNode) {
      toast.parentNode.removeChild(toast);
    }
  }

  function dismissToast(toast) {
    var instance = getBootstrapToast(toast);
    if (instance) {
      instance.hide();
      return;
    }
    removeToast(toast);
  }

  function setToastVariant(toast, variant) {
    if (!toast || !toast.classList) {
      return;
    }

    var nextVariant = String(variant || 'info').trim().toLowerCase();
    var variants = ['primary', 'secondary', 'success', 'danger', 'warning', 'info', 'light', 'dark'];
    variants.forEach(function (value) {
      toast.classList.remove('text-bg-' + value);
    });
    toast.classList.add('text-bg-' + (variants.indexOf(nextVariant) === -1 ? 'info' : nextVariant));
  }

  function getMessageVariant(message, fallbackVariant) {
    var text = String(message || '').trim();
    if (/\b(?:unable to|cannot|can't|could not|failed to)\s+delete\b/i.test(text) || /\bdelete\b.*\b(?:before|first)\b/i.test(text) || /\bstill (?:in use|linked|assigned|used)\b/i.test(text)) {
      return 'danger';
    }
    if (/\b(?:already exists|already exist|already taken|duplicate|must be unique|name already exists)\b/i.test(text)) {
      return 'warning';
    }
    return String(fallbackVariant || 'info').trim().toLowerCase() || 'info';
  }

  function showToast(message, variant) {
    var text = String(message || '').trim();
    if (!text) {
      return;
    }

    var container = document.getElementById('app-toast-container');
    if (!container) {
      return;
    }

    var existingToast = document.getElementById('app-toast');
    if (existingToast) {
      var existingBody = existingToast.querySelector('.toast-body');
      if (existingBody) {
        existingBody.textContent = text;
      }
      var nextVariant = getMessageVariant(text, variant);
      existingToast.setAttribute('data-toast-variant', nextVariant);
      setToastVariant(existingToast, nextVariant);
      var existingInstance = getBootstrapToast(existingToast);
      if (existingInstance) {
        existingInstance.show();
      }
      return;
    }

    var toast = document.createElement('div');
  toast.className = 'toast align-items-center border-0';
    toast.id = 'app-toast';
    toast.setAttribute('role', 'status');
    toast.setAttribute('aria-live', 'polite');
    toast.setAttribute('aria-atomic', 'true');
    toast.setAttribute('data-bs-autohide', 'true');
    toast.setAttribute('data-bs-delay', '4000');
    toast.innerHTML = '<div class="d-flex"><div class="toast-body"></div><button type="button" class="btn-close btn-close-white me-2 m-auto" data-bs-dismiss="toast" aria-label="Dismiss notification"></button></div>';
    var toastVariant = getMessageVariant(text, variant);
    toast.setAttribute('data-toast-variant', toastVariant);
    setToastVariant(toast, toastVariant);
    toast.querySelector('.toast-body').textContent = text;

    toast.addEventListener('hidden.bs.toast', function () {
      removeToast(toast);
    });

    container.appendChild(toast);
    var instance = getBootstrapToast(toast);
    if (instance) {
      instance.show();
    }
  }

  function initToast() {
    var toast = document.getElementById('app-toast');
    if (!toast) {
      return;
    }

    try {
      var url = new URL(window.location.href);
      if (url.searchParams.has('message')) {
        url.searchParams.delete('message');
        window.history.replaceState({}, document.title, url.pathname + url.search + url.hash);
      }
    } catch (_error) {
      // ignore URL cleanup failures
    }

    var existingVariant = String(toast.getAttribute('data-toast-variant') || '').trim().toLowerCase() || getMessageVariant((toast.querySelector('.toast-body') && toast.querySelector('.toast-body').textContent) || '', 'info');
    setToastVariant(toast, existingVariant);

    var instance = getBootstrapToast(toast);
    if (instance) {
      instance.show();
    }
  }

  window.dismissToast = dismissToast;
  window.showToast = showToast;
  window.initToast = initToast;

  initToast();
}());