export function FieldRenderer({ definitions, values, onChange, disabled = false, actors = [] }) {
  if (!definitions?.length) {
    return null
  }

  return (
    <fieldset className="field-renderer">
      <legend className="field-renderer__legend">Zusatzfelder (Archetyp)</legend>
      {definitions.map((def) => (
        <DynamicField
          key={def.field_key}
          definition={def}
          value={values?.[def.field_key]}
          onChange={(next) => onChange(def.field_key, next)}
          disabled={disabled}
          actors={actors}
        />
      ))}
    </fieldset>
  )
}

function DynamicField({ definition, value, onChange, disabled, actors = [] }) {
  const { field_key, field_type, label, required, validation_json: validation } = definition
  const inputId = `field-${field_key}`

  if (field_type === 'longtext') {
    return (
      <label htmlFor={inputId}>
        {label}
        {required && ' *'}
        <textarea
          id={inputId}
          name={field_key}
          rows={4}
          value={value ?? ''}
          onChange={(e) => onChange(e.target.value)}
          required={required}
          disabled={disabled}
        />
      </label>
    )
  }

  if (field_type === 'boolean') {
    return (
      <label className="checkbox-label" htmlFor={inputId}>
        <input
          id={inputId}
          name={field_key}
          type="checkbox"
          checked={Boolean(value)}
          onChange={(e) => onChange(e.target.checked)}
          disabled={disabled}
        />
        {label}
        {required && ' *'}
      </label>
    )
  }

  if (field_type === 'enum') {
    const options = validation?.options || []
    return (
      <label htmlFor={inputId}>
        {label}
        {required && ' *'}
        <select
          id={inputId}
          name={field_key}
          value={value ?? ''}
          onChange={(e) => onChange(e.target.value)}
          required={required}
          disabled={disabled}
        >
          <option value="">—</option>
          {options.map((opt) => (
            <option key={opt} value={opt}>
              {opt}
            </option>
          ))}
        </select>
      </label>
    )
  }

  if (field_type === 'actor_ref') {
    return (
      <label htmlFor={inputId}>
        {label}
        {required && ' *'}
        <select
          id={inputId}
          name={field_key}
          value={value ?? ''}
          onChange={(e) => onChange(e.target.value || null)}
          required={required}
          disabled={disabled}
        >
          <option value="">—</option>
          {actors.map((actor) => (
            <option key={actor.id} value={actor.id}>
              {actor.name}
            </option>
          ))}
        </select>
      </label>
    )
  }

  const inputType =
    field_type === 'number' ? 'number' : field_type === 'date' ? 'date' : field_type === 'url' ? 'url' : 'text'

  return (
    <label htmlFor={inputId}>
      {label}
      {required && ' *'}
      <input
        id={inputId}
        name={field_key}
        type={inputType}
        value={value ?? ''}
        onChange={(e) => onChange(field_type === 'number' ? e.target.value : e.target.value)}
        required={required}
        disabled={disabled}
      />
    </label>
  )
}