package be.mygod.vpnhotspot

import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.ArrayAdapter
import android.widget.Button
import androidx.appcompat.app.AppCompatDialogFragment
import androidx.lifecycle.lifecycleScope
import be.mygod.vpnhotspot.App.Companion.app
import be.mygod.vpnhotspot.databinding.FragmentEbegBinding
import be.mygod.vpnhotspot.util.launchUrl
import be.mygod.vpnhotspot.widget.SmartSnackbar
import com.android.billingclient.api.*
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.GlobalScope
import kotlinx.coroutines.launch
import timber.log.Timber

/**
 * Based on: https://github.com/PrivacyApps/donations/blob/747d36a18433c7e9329691054122a8ad337a62d2/Donations/src/main/java/org/sufficientlysecure/donations/DonationsFragment.java
 */
class EBegFragment : AppCompatDialogFragment() {
    companion object : BillingClientStateListener, PurchasesUpdatedListener {
        private lateinit var billingClient: BillingClient

        fun init() {
            billingClient = BillingClient.newBuilder(app).apply {
                enablePendingPurchases()
            }.setListener(this).build().also { it.startConnection(this) }
        }

        override fun onBillingSetupFinished(billingResult: BillingResult) {
            if (billingResult.responseCode != BillingClient.BillingResponseCode.OK) {
                Timber.e("onBillingSetupFinished: ${billingResult.responseCode}")
            } else GlobalScope.launch(Dispatchers.Main.immediate) {
                val result = billingClient.queryPurchasesAsync(BillingClient.SkuType.INAPP)
                onPurchasesUpdated(result.billingResult, result.purchasesList)
            }
        }

        override fun onBillingServiceDisconnected() {
            Timber.e("onBillingServiceDisconnected")
            billingClient.startConnection(this)
        }

        override fun onPurchasesUpdated(billingResult: BillingResult, purchases: List<Purchase>?) {
            if (billingResult.responseCode == BillingClient.BillingResponseCode.OK && purchases != null) {
                // directly consume in-app purchase, so that people can donate multiple times
                purchases.filter { it.purchaseState == Purchase.PurchaseState.PURCHASED }.map(this::consumePurchase)
            } else Timber.e("onPurchasesUpdated: ${billingResult.responseCode}")
        }

        private fun consumePurchase(purchase: Purchase) = GlobalScope.launch(Dispatchers.Main.immediate) {
            billingClient.consumePurchase(ConsumeParams.newBuilder().apply {
                setPurchaseToken(purchase.purchaseToken)
            }.build()).apply {
                if (billingResult.responseCode == BillingClient.BillingResponseCode.OK) {
                    SmartSnackbar.make(R.string.donations__thanks_dialog).show()
                } else Timber.e("onConsumeResponse: ${billingResult.responseCode}")
            }
        }
    }

    private lateinit var binding: FragmentEbegBinding
    private var skus: List<SkuDetails>? = null
        set(value) {
            field = value
            binding.donationsGoogleAndroidMarketSpinner.apply {
                val adapter = ArrayAdapter(context ?: return, android.R.layout.simple_spinner_item,
                        value?.map { it.price } ?: listOf("…"))
                adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)
                setAdapter(adapter)
            }
        }

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
        binding = FragmentEbegBinding.inflate(inflater, container, false)
        return binding.root
    }
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        dialog!!.setTitle(R.string.settings_misc_donate)
        viewLifecycleOwner.lifecycleScope.launchWhenCreated {
            billingClient.querySkuDetails(SkuDetailsParams.newBuilder().apply {
                setSkusList(listOf("donate001", "donate002", "donate005", "donate010", "donate020", "donate050",
                        "donate100", "donate200", "donatemax"))
                setType(BillingClient.SkuType.INAPP)
            }.build()).apply {
                if (billingResult.responseCode == BillingClient.BillingResponseCode.OK) skus = skuDetailsList else {
                    Timber.e("onSkuDetailsResponse: ${billingResult.responseCode}")
                    SmartSnackbar.make(R.string.donations__google_android_market_not_supported).show()
                }
            }
        }
        binding.donationsGoogleAndroidMarketDonateButton.setOnClickListener {
            val sku = skus?.getOrNull(binding.donationsGoogleAndroidMarketSpinner.selectedItemPosition)
            if (sku != null) billingClient.launchBillingFlow(requireActivity(), BillingFlowParams.newBuilder().apply {
                setSkuDetails(sku)
            }.build()) else SmartSnackbar.make(R.string.donations__google_android_market_not_supported).show()
        }
        @Suppress("ConstantConditionIf")
        if (BuildConfig.DONATIONS) (binding.donationsMoreStub.inflate() as Button).setOnClickListener {
            requireContext().launchUrl("https://mygod.be/donate/")
        }
    }
}