import {FileType, IAttachment} from "../model"
import {REG_VALID_IMAGE, REG_VALID_VIDEO, REG_VALID_DOCUMENT} from "../utils"

export const useCommon = () => {
  const isDocumentReady = () => typeof window !== "undefined"

  const isValidInputByRegex = (input: string, regex: RegExp | string) => new RegExp(regex).test(input)

  const findFileType = ({url}: IAttachment) => {
    let type: FileType = null
    if (isValidInputByRegex(url, REG_VALID_IMAGE)) type = "image"
    else if (isValidInputByRegex(url, REG_VALID_VIDEO)) type = "video"
    else if (isValidInputByRegex(url, REG_VALID_DOCUMENT)) type = "document"
    return type
  }

  const getFileType = (base64: string) => {
    let mime = ""
    if (base64) {
      const arr = base64.split(",")
      mime = arr[0].match(/:(.*?);/)?.[1] || ""
    }
    return mime
  }

  return {
    isDocumentReady,
    findFileType,
    isValidInputByRegex,
    getFileType,
  }
}