package com.margelo.nitro.progressandmodal

import android.app.Activity
import android.view.Gravity
import android.view.ViewGroup
import android.widget.FrameLayout
import android.widget.ProgressBar
import android.content.res.ColorStateList
import androidx.core.graphics.toColorInt

class PAMLoadingManager(private val getActivity: () -> Activity?) {

  private val loadingViewTag = 9999
  private var loadingCount: Int = 0
  private var backgroundColor: String = "#29000000"
  private var indicatorColor: String = "#666666"

  fun setConfig(backgroundColor: String?, indicatorColor: String?) {
    backgroundColor?.let { this.backgroundColor = it }
    indicatorColor?.let { this.indicatorColor = it }
  }

  fun showLoading() {
    val activity = getActivity() ?: return
    activity.runOnUiThread {
      loadingCount++
      if (loadingCount == 1) {
        val rootView = activity.window.decorView as ViewGroup

        // Remove existing if present
        rootView.findViewWithTag<FrameLayout>(loadingViewTag)?.let {
          rootView.removeView(it)
        }

        val loadingView = FrameLayout(activity).apply {
          tag = loadingViewTag
          setBackgroundColor(backgroundColor.toColorInt())
          isClickable = true
          isFocusable = true
          layoutParams = FrameLayout.LayoutParams(
            ViewGroup.LayoutParams.MATCH_PARENT,
            ViewGroup.LayoutParams.MATCH_PARENT
          ).apply { gravity = Gravity.CENTER }
        }

        val progressBar = ProgressBar(activity).apply {
          layoutParams = FrameLayout.LayoutParams(
            ViewGroup.LayoutParams.WRAP_CONTENT,
            ViewGroup.LayoutParams.WRAP_CONTENT
          ).apply { gravity = Gravity.CENTER }
          indeterminateTintList = ColorStateList.valueOf(indicatorColor.toColorInt())
        }

        loadingView.addView(progressBar)
        rootView.addView(loadingView)
        ViewUtils.fadeIn(loadingView)
      }
    }
  }

  fun hideLoading() {
    val activity = getActivity() ?: return
    activity.runOnUiThread {
      if (loadingCount > 0) {
        loadingCount--
        if (loadingCount == 0) {
          removeLoadingView(activity)
        }
      }
    }
  }

  fun forceHideLoading() {
    val activity = getActivity() ?: return
    activity.runOnUiThread {
      loadingCount = 0
      removeLoadingView(activity)
    }
  }

  private fun removeLoadingView(activity: Activity) {
    val rootView = activity.window.decorView as ViewGroup
    rootView.findViewWithTag<FrameLayout>(loadingViewTag)?.let { view ->
      ViewUtils.fadeOut(view) { rootView.removeView(view) }
    }
  }
}