import { parseCubeLut } from './formats/cube'
import { parseLutFormat } from './lutFormat'
import { Lut } from './typings'

/**
 * Parses the input LUT. It will try to detect the format, and will default
 * to Adobe's .cube
 * @param input
 */
export const parseLut = async (
  input: string | Uint8Array | ArrayBuffer | Buffer
): Promise<Lut> => {
  const options: { data: Uint8Array } = {
    data: new Uint8Array()
  }

  // Convert input to Uint8Array
  if ((input as Buffer).writeBigInt64BE) {
    options.data = new Uint8Array((input as Buffer).buffer)
  }

  if ((input as Uint8Array).buffer) {
    options.data = input as Uint8Array
  }

  if ((input as ArrayBuffer).byteLength) {
    options.data = new Uint8Array(input as ArrayBuffer)
  }

  const format = parseLutFormat(options)
  switch (format) {
    case 'cube':
      return parseCubeLut(options.data)
  }
}

export type { Lut }