package com.myfatoorahreactnative.googlepay

import android.app.Activity
import android.app.Application
import android.content.ContentProvider
import android.content.ContentValues
import android.database.Cursor
import android.net.Uri
import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.result.ActivityResultCaller
import com.myfatoorah.sdk.views.embeddedpayment.googlepay.MFGooglePayLauncher
import java.lang.ref.WeakReference

class MFGPayInitProvider : ContentProvider() {

  override fun onCreate(): Boolean {
    val app = context?.applicationContext as? Application ?: return false
    app.registerActivityLifecycleCallbacks(object : Application.ActivityLifecycleCallbacks {
      override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) {
        if (activity is ComponentActivity) {
          MFGooglePayLauncherHolder.create(activity)
        }
      }
      override fun onActivityDestroyed(activity: Activity) {
        MFGooglePayLauncherHolder.clearIf(activity)
      }
      override fun onActivityStarted(activity: Activity) {}
      override fun onActivityResumed(activity: Activity) {}
      override fun onActivityPaused(activity: Activity) {}
      override fun onActivityStopped(activity: Activity) {}
      override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle) {}
    })
    return true
  }

  override fun query(u: Uri, p: Array<String>?, s: String?, a: Array<String>?, o: String?): Cursor? = null
  override fun getType(uri: Uri): String? = null
  override fun insert(uri: Uri, values: ContentValues?): Uri? = null
  override fun delete(uri: Uri, s: String?, a: Array<String>?): Int = 0
  override fun update(uri: Uri, v: ContentValues?, s: String?, a: Array<String>?): Int = 0
}


object MFGooglePayLauncherHolder {
  private var activityRef: WeakReference<Activity>? = null
  var launcher: MFGooglePayLauncher? = null
    private set

  fun create(activity: ComponentActivity) {
    launcher = MFGooglePayLauncher(activity as ActivityResultCaller, activity)
    activityRef = WeakReference(activity)
  }

  fun launcherFor(activity: Activity?): MFGooglePayLauncher? =
    if (activity != null && activityRef?.get() === activity) launcher else null

  fun clearIf(activity: Activity) {
    if (activityRef?.get() === activity) {
      launcher = null
      activityRef = null
    }
  }
}