import { useSearchParams } from "react-router-dom"

export const useSelectedParams = ({
  param,
  prefix,
  multiple = false,
}: {
  param: string
  prefix?: string
  multiple?: boolean
}) => {
  const [searchParams, setSearchParams] = useSearchParams()
  const identifier = prefix ? `${prefix}_${param}` : param
  const offsetKey = prefix ? `${prefix}_offset` : "offset"

  const add = (value: string) => {
    setSearchParams((prev) => {
      const newValue = new URLSearchParams(prev)

      const updateMultipleValues = () => {
        const existingValues = newValue.get(identifier)?.split(",") || []

        if (!existingValues.includes(value)) {
          existingValues.push(value)
          newValue.set(identifier, existingValues.join(","))
        }
      }

      const updateSingleValue = () => {
        newValue.set(identifier, value)
      }

      multiple ? updateMultipleValues() : updateSingleValue()
      newValue.delete(offsetKey)

      return newValue
    })
  }

  const deleteParam = (value?: string) => {
    const deleteMultipleValues = (prev: URLSearchParams) => {
      const existingValues = prev.get(identifier)?.split(",") || []
      const index = existingValues.indexOf(value || "")
      if (index > -1) {
        existingValues.splice(index, 1)
        prev.set(identifier, existingValues.join(","))
      }
    }

    const deleteSingleValue = (prev: URLSearchParams) => {
      prev.delete(identifier)
    }

    setSearchParams((prev) => {
      if (value) {
        multiple ? deleteMultipleValues(prev) : deleteSingleValue(prev)
        if (!prev.get(identifier)) {
          prev.delete(identifier)
        }
      } else {
        prev.delete(identifier)
      }
      prev.delete(offsetKey)
      return prev
    })
  }

  const get = () => {
    return searchParams.get(identifier)?.split(",").filter(Boolean) || []
  }

  return { add, delete: deleteParam, get }
}