import { cn } from '@/lib/cn'

/** Shared HeroUI field wrapper classes — Remi design system (8px radius, white surface). */
export const FIELD_WRAPPER =
  'bg-surface shadow-none border border-divider hover:!border-primary-hover group-data-[focus=true]:!border-primary group-data-[focus=true]:hover:!border-primary'

/** Reserve no empty space under fields when there is no error message. */
export const FIELD_HELPER_WRAPPER = 'min-h-0 p-0'

export const FIELD_RADIUS = 'md' as const

export const DATE_PICKER_CLASSNAME = 'date-picker-input'

export type RemiFieldVariant = 'flat' | 'bordered' | 'faded' | 'underlined'
export type RemiFieldSize = 'sm' | 'md' | 'lg'

interface RemiDatePickerStyleOptions {
  variant?: RemiFieldVariant
  size?: RemiFieldSize
  isInvalid?: boolean
  /** When true, border/background live on {@link REMI_BORDERED_DATE_PICKER_WRAPPER} / underlined wrapper. */
  inWrapper?: boolean
}

/** Wrapper for table filters — matches HeroUI bordered `sm` Input (`h-8`, `px-2`, `rounded-medium`). */
export const REMI_BORDERED_DATE_PICKER_WRAPPER = cn(
  FIELD_WRAPPER,
  'flex h-8 min-h-8 w-full items-center rounded-medium px-2',
  'focus-within:!border-primary focus-within:hover:!border-primary'
)

/** Wrapper for modal filters — matches HeroUI underlined `md` Input. */
export const REMI_UNDERLINED_DATE_PICKER_WRAPPER = cn(
  'flex h-10 min-h-10 w-full items-center rounded-none border-b border-divider bg-surface px-1 pb-1 shadow-none',
  'hover:!border-primary-hover focus-within:!border-primary'
)

/** Inline styles for react-multi-date-picker — aligned with HeroUI Input sizes in PaginatedList. */
export function getRemiDatePickerStyles({
  variant = 'bordered',
  size = 'md',
  isInvalid = false,
  inWrapper = false,
}: RemiDatePickerStyleOptions = {}) {
  const errorColor = 'var(--color-fourth)'
  const neutralBorder = 'var(--color-divider)'

  const height = size === 'sm' ? '32px' : size === 'lg' ? '48px' : '40px'
  const horizontalPadding = size === 'sm' ? '8px' : '12px'

  if (inWrapper) {
    return {
      width: '100%',
      boxSizing: 'border-box' as const,
      height: '100%',
      minHeight: height,
      border: 'none',
      background: 'transparent',
      borderRadius: '0',
      color: 'var(--color-text-main)',
      padding: '0',
      textAlign: 'right' as const,
      boxShadow: 'none',
      outline: 'none',
    }
  }

  const baseStyles = {
    width: '100%',
    boxSizing: 'border-box' as const,
    height,
    borderRadius: '8px',
    color: 'var(--color-text-main)',
    padding: `0 ${horizontalPadding}`,
    textAlign: 'right' as const,
    boxShadow: 'none',
    outline: 'none',
  }

  switch (variant) {
    case 'bordered':
      return {
        ...baseStyles,
        background: 'var(--color-surface)',
        border: '1px solid',
        borderColor: isInvalid ? errorColor : neutralBorder,
      }
    case 'faded':
      return {
        ...baseStyles,
        background: '#f4f4f5',
        border: '1px solid',
        borderColor: isInvalid ? errorColor : neutralBorder,
      }
    case 'underlined':
      return {
        ...baseStyles,
        background: 'transparent',
        border: 'none',
        borderBottom: `1px solid ${isInvalid ? errorColor : neutralBorder}`,
        borderRadius: '0',
        borderColor: isInvalid ? errorColor : neutralBorder,
      }
    case 'flat':
    default:
      return {
        ...baseStyles,
        background: '#f4f4f5',
        border: isInvalid ? `1px solid ${errorColor}` : 'none',
        borderColor: isInvalid ? errorColor : '#f4f4f5',
      }
  }
}

/** Listbox option styling — light hover/focus, no borders. */
export const REMI_LISTBOX_ITEM_CLASSES = {
  base: [
    'bg-surface rounded-md border-none shadow-none outline-none',
    'data-[hover=true]:border-none data-[hover=true]:bg-accent-light/50 data-[hover=true]:shadow-none',
    'data-[focus=true]:border-none data-[focus=true]:bg-accent-light/50 data-[focus=true]:shadow-none',
    'data-[focus-visible=true]:outline-none data-[focus-visible=true]:border-none',
    'data-[selected=true]:bg-primary/10 data-[selected=true]:border-none',
  ].join(' '),
}

export const REMI_LISTBOX_PROPS = {
  emptyContent: 'موردی یافت نشد',
  itemClasses: REMI_LISTBOX_ITEM_CLASSES,
  classNames: {
    base: 'bg-surface',
    list: 'bg-surface',
  },
} as const