import { type Oklch, oklch } from "culori"
import type { Config, PlatformConfig, TransformedToken } from "style-dictionary"
import type { Transform } from "style-dictionary/types"
import { isColor } from "../filters/isColor"
import { getColorValue } from "../helpers/get"

export function hexToOklchColor(
  token: TransformedToken,
  _: PlatformConfig,
  options: Config,
): string {
  const value = getColorValue(token, options)
  const color = oklch(value) as Oklch | undefined
  if (!color) {
    throw new Error("Invalid color value")
  }
  const l = color.l.toFixed(3)
  const c = color.c.toFixed(3)
  const h = (color.h ?? 0).toFixed(3)
  const result = `${l} ${c} ${h}`
  return result
}

export const oklchColorTransform: Transform = {
  name: "color/hex-to-oklch",
  type: "value",
  filter: isColor,
  transform: hexToOklchColor,
}