import { Check, Save, X } from 'lucide-react'

/**
 * Feste Aktionsleiste für Formulare/Modale: Speichern, Speichern & schließen, Abbrechen.
 * Bleibt sichtbar (sticky), während der Formularinhalt scrollt.
 */
function ActionLabel({ Icon, long, short, saving, savingShort = '…' }) {
  if (saving) {
    return <span className="form-action-bar__saving">{savingShort}</span>
  }
  return (
    <>
      {Icon ? <Icon size={17} strokeWidth={2.25} className="form-action-bar__icon" aria-hidden /> : null}
      <span className="form-action-bar__text form-action-bar__text--long">{long}</span>
      {short != null && short !== '' ? (
        <span className="form-action-bar__text form-action-bar__text--short">{short}</span>
      ) : null}
    </>
  )
}

export default function FormActionBar({
  placement = 'bottom',
  variant = 'default',
  saving = false,
  saveLabel,
  saveShortLabel,
  saveAndCloseLabel = 'Speichern & schließen',
  saveAndCloseShortLabel,
  cancelLabel = 'Abbrechen',
  onSave,
  onSaveAndClose,
  onCancel,
  showSave = true,
  showSaveAndClose = true,
  showCancel = true,
  formId,
  isNew = false,
  primaryIsSaveOnly = false,
}) {
  const labelSave = saveLabel ?? (isNew ? 'Anlegen' : 'Speichern')
  const shortSave = saveShortLabel ?? (isNew ? 'Neu' : 'Sichern')
  const shortClose = saveAndCloseShortLabel ?? 'Fertig'
  const showSaveBtn = showSave && (Boolean(onSave) || Boolean(formId))
  const showCloseBtn = showSaveAndClose && (Boolean(onSaveAndClose) || Boolean(formId))
  const showCancelBtn = showCancel && Boolean(onCancel)

  if (!showSaveBtn && !showCloseBtn && !showCancelBtn) return null

  const saveBtnClass = `btn form-action-bar__btn${
    primaryIsSaveOnly ? ' btn-primary' : ' btn-secondary'
  }`
  const closeBtnClass = `btn form-action-bar__btn${
    primaryIsSaveOnly ? ' btn-secondary' : ' btn-primary'
  }`

  const primaryCount = (showSaveBtn ? 1 : 0) + (showCloseBtn ? 1 : 0)

  return (
    <div
      className={`form-action-bar form-action-bar--${placement} form-action-bar--${variant}${
        primaryCount === 1 ? ' form-action-bar--single-primary' : ''
      }`}
      role="group"
      aria-label="Formularaktionen"
    >
      <div className="form-action-bar__inner">
        {showCancelBtn ? (
          <button
            type="button"
            className="btn btn-secondary form-action-bar__btn form-action-bar__btn--cancel"
            onClick={onCancel}
            disabled={saving}
            aria-label={cancelLabel}
            title={cancelLabel}
          >
            <ActionLabel Icon={X} long={cancelLabel} short="" saving={saving} />
          </button>
        ) : null}
        <div className="form-action-bar__primary-group">
          {showSaveBtn ? (
            <button
              type={formId && !onSave ? 'submit' : 'button'}
              form={formId && !onSave ? formId : undefined}
              className={saveBtnClass}
              disabled={saving}
              onClick={onSave || undefined}
              title={labelSave}
            >
              <ActionLabel Icon={Save} long={labelSave} short={shortSave} saving={saving} />
            </button>
          ) : null}
          {showCloseBtn ? (
            <button
              type={formId && !onSaveAndClose ? 'submit' : 'button'}
              form={formId && !onSaveAndClose ? formId : undefined}
              className={closeBtnClass}
              disabled={saving}
              onClick={onSaveAndClose || undefined}
              title={saveAndCloseLabel}
            >
              <ActionLabel
                Icon={Check}
                long={saveAndCloseLabel}
                short={shortClose}
                saving={saving}
              />
            </button>
          ) : null}
        </div>
      </div>
    </div>
  )
}