// Styled ListItem = @tamagui/ui's list-item behavior and parts + the default
// v2-look skin (theme palette, border, cursor, hover/press color, the outlined
// and active appearances, disabled dimming) and the sizing ladder.
// resolveSizing derives every size value from the config. @tamagui/ui
// ships no ListItem of its own: it exposes `useListItem` and the frame, text,
// title, subtitle, and icon parts, and a skin decides the rest. This is the
// single skin definition — the shadcn registry item is generated from this file.
import {
  type ComponentSize,
  createStyledHOC,
  type GetProps,
  resolveSizing,
  styled,
  withStaticProperties,
} from '@tamagui/core'
import { useGetThemedIcon } from '@tamagui/helpers-tamagui'
import {
  type ListItemBehaviorProps,
  ListItemContext,
  ListItemFrame as ListItemBehaviorFrame,
  type ListItemIconProps as ListItemBehaviorIconProps,
  ListItemSubtitle as ListItemBehaviorSubtitle,
  ListItemText as ListItemBehaviorText,
  ListItemTitle as ListItemBehaviorTitle,
  useListItem,
} from '@tamagui/list-item'

export type ListItemSize = ComponentSize | boolean

const getListItemFrameSize = styled.dynamic<ListItemSize>((val, env) => {
  const sizing = resolveSizing(val, env)
  if (!sizing) return
  return {
    paddingInline: sizing.paddingInline,
    paddingBlock: sizing.paddingBlock,
    gap: sizing.gap,
  }
})

const getListItemTextSize = styled.dynamic<ListItemSize>((val, env) => {
  const sizing = resolveSizing(val, env)
  if (!sizing) return
  return {
    fontSize: sizing.fontSize,
    lineHeight: sizing.lineHeight,
  }
})

// the subtitle sits one step below the title: the previous rung's font key,
// or the rung's own at the bottom of the ladder
const getListItemSubtitleSize = styled.dynamic<ListItemSize>((val, env) => {
  const sizing = resolveSizing(val, env)
  if (!sizing) return
  const names = Object.keys(env.sizing.sizes)
  const prev = names[Math.max(0, names.indexOf(sizing.name) - 1)]
  const prevKey = prev != null ? env.sizing.sizes[prev]?.fontSize : undefined
  const key = prevKey ?? sizing.fontSize
  return {
    fontSize: key,
    lineHeight: key,
  }
})

// icon px for an explicit size: numbers pass through, names read the ladder,
// anything else is the default rung. undefined when nothing resolves, so the
// icon falls back to its own default size.
const listItemIconPx = (size: unknown, scaleIcon = 1): number | undefined => {
  if (typeof size === 'number') return size * scaleIcon
  const icon = resolveSizing(size as ListItemSize)?.icon ?? resolveSizing(undefined)?.icon
  return icon == null ? undefined : icon * scaleIcon
}

// the additive-border "outlined" appearance (formerly themeableVariantStyles.outlined
// from ThemeableStack, now removed from the behavior package).
const outlined = {
  backgroundColor: 'transparent hover:transparent press:transparent',
  borderWidth: 1,
  borderColor: 'border-color hover:border-color-hover press:border-color-press',
} as const

export const ListItemFrame = styled(ListItemBehaviorFrame, {
  context: ListItemContext,
  displayName: 'ListItem',
  backgroundColor: 'background hover:background-hover press:background-press',
  borderColor: 'border-color hover:border-color-hover press:border-color-press',
  color: 'color',
  cursor: 'default',

  variants: {
    size: getListItemFrameSize,

    variant: {
      outlined,
    },

    active: {
      true: {
        backgroundColor: 'hover:background',
      },
    },

    disabled: {
      true: {
        opacity: 0.5,
        pointerEvents: 'none',
      },
    },
  } as const,
  defaultVariants: {
    size: 'md',
  },
})

export const ListItemText = styled(ListItemBehaviorText, {
  context: ListItemContext,
  displayName: 'ListItemText',
  variants: {
    size: getListItemTextSize,
  } as const,
  defaultVariants: {
    size: 'md',
  },
})

export const ListItemTitle = styled(ListItemBehaviorTitle, {
  context: ListItemContext,
  displayName: 'ListItemTitle',
  variants: {
    size: getListItemTextSize,
  } as const,
  defaultVariants: {
    size: 'md',
  },
})

export const ListItemSubtitle = styled(ListItemBehaviorSubtitle, {
  context: ListItemContext,
  displayName: 'ListItemSubtitle',
  variants: {
    size: getListItemSubtitleSize,
  } as const,
  defaultVariants: {
    size: 'md',
  },
})

export const ListItemIcon = ({
  children,
  size,
  scaleIcon = 1,
}: ListItemBehaviorIconProps) => {
  const context = ListItemContext.useStyledContext()
  const getThemedIcon = useGetThemedIcon({
    size: listItemIconPx(size ?? context.size, scaleIcon),
    color: context.color,
  })

  return getThemedIcon(children)
}

const ListItemComponent = createStyledHOC(
  ListItemFrame,
  function ListItem(props: ListItemBehaviorProps, ref) {
    // the `icon` prop is themed here, before the frame renders, so the skin
    // resolves its px up front instead of reading them back off the context
    const contextSize = ListItemContext.useStyledContext()?.size
    const size = props.size ?? contextSize ?? 'md'
    const scaleIcon = props.scaleIcon ?? 1
    const iconSize = props.iconSize ?? listItemIconPx(size, scaleIcon)
    const { props: listItemProps } = useListItem({
      ...props,
      iconSize,
      scaleIcon: props.iconSize == null ? 1 : scaleIcon,
    })
    return <ListItemFrame ref={ref} {...listItemProps} />
  }
)

export const ListItem = withStaticProperties(ListItemComponent, {
  Apply: ListItemContext.Provider,
  Frame: ListItemFrame,
  Icon: ListItemIcon,
  Subtitle: ListItemSubtitle,
  Text: ListItemText,
  Title: ListItemTitle,
})

export type ListItemProps = GetProps<typeof ListItemComponent>