package com.jeremybarbet.reactnativepurchasekit

import com.android.billingclient.api.ProductDetails

data class PurchaseKitPeriod(
  val value: Int,
  val unit: String,
  val localized: String,
)

data class PurchaseKitSubscription(
  val period: PurchaseKitPeriod?,
)

private fun parsedLocalized(value: Int, unit: String): String {
  return when (unit) {
    "P1W" -> if (value > 1) "/week for $value weeks" else "/week"
    "P1M" -> if (value > 1) "/month for $value months" else "/month"
    "P3M" -> if (value > 1) "/3 months, $value times" else "/3 months"
    "P6M" -> if (value > 1) "/6 months, $value times" else "/6 months"
    "P1Y" -> if (value > 1) "/year for $value years" else "/year"
    else -> "—"
  }
}

fun parseSubscription(product: ProductDetails): PurchaseKitSubscription {
  val details = product.subscriptionOfferDetails!![0].pricingPhases.pricingPhaseList[0]
  val value = details.billingCycleCount
  val unit = details.billingPeriod

  val period = PurchaseKitPeriod(
    value,
    unit,
    parsedLocalized(value, unit)
  )

  return PurchaseKitSubscription(
    period,
  )
}