@file:Suppress("DEPRECATION")

package expo.modules.devmenu

import android.os.Build
import android.os.Bundle
import android.view.KeyEvent
import android.view.View
import android.view.ViewGroup
import android.widget.FrameLayout
import androidx.coordinatorlayout.widget.CoordinatorLayout
import androidx.core.view.ViewCompat
import androidx.core.view.WindowCompat
import androidx.core.view.WindowInsetsCompat
import androidx.core.view.doOnLayout
import androidx.core.view.updatePadding
import com.facebook.react.ReactActivity
import com.facebook.react.ReactActivityDelegate
import com.facebook.react.ReactDelegate
import com.facebook.react.ReactRootView
import com.facebook.react.defaults.DefaultNewArchitectureEntryPoint.fabricEnabled
import com.facebook.react.defaults.DefaultReactActivityDelegate
import com.facebook.react.interfaces.fabric.ReactSurface
import com.google.android.material.bottomsheet.BottomSheetBehavior
import expo.modules.devmenu.helpers.getPrivateDeclaredFieldValue
import expo.modules.devmenu.helpers.setPrivateDeclaredFieldValue
import expo.modules.rncompatibility.ReactNativeFeatureFlags
import java.util.UUID

/**
 * The dev menu is launched using this activity.
 * [DevMenuActivity] is transparent and doesn't have any in/out animations.
 * So we can display dev menu as a modal.
 */
class DevMenuActivity : ReactActivity() {
  override fun getMainComponentName() = "main"

  private val isEmulator
    get() = Build.FINGERPRINT.contains("vbox") || Build.FINGERPRINT.contains("generic")

  override fun createReactActivityDelegate(): ReactActivityDelegate {
    return object : DefaultReactActivityDelegate(this, mainComponentName, fabricEnabled) {
      // We don't want to destroy the root view, because we want to reuse it later.
      override fun onDestroy() = Unit

      override fun loadApp(appKey: String?) {
        val reactDelegate: ReactDelegate = ReactActivityDelegate::class.java
          .getPrivateDeclaredFieldValue("mReactDelegate", this)

        // On the first launch of this activity we need to call super.loadApp() to start the dev menu
        // and cache the rootView for reuse
        if (!appWasLoaded) {
          super.loadApp(appKey)
          val reactRootView = reactDelegate.reactRootView
          if (!rootViewWasInitialized() && reactRootView != null) {
            rootView = reactRootView
            if (ReactNativeFeatureFlags.enableBridgelessArchitecture) {
              reactSurface = reactDelegate::class.java.getPrivateDeclaredFieldValue(
                "mReactSurface", reactDelegate
              )
            }
          }
          appWasLoaded = true
          return
        }

        ReactDelegate::class.java
          .setPrivateDeclaredFieldValue("mFabricEnabled", reactDelegate, fabricEnabled)
        ReactDelegate::class.java
          .setPrivateDeclaredFieldValue("mReactRootView", reactDelegate, rootView)
        if (ReactNativeFeatureFlags.enableBridgelessArchitecture) {
          ReactDelegate::class.java
            .setPrivateDeclaredFieldValue("mReactSurface", reactDelegate, reactSurface)
        }

        // Removes the root view from the previous activity
        (rootView.parent as? ViewGroup)?.removeView(rootView)

        // Attaches the root view to the current activity
        plainActivity.setContentView(reactDelegate.reactRootView)
      }

      override fun getReactNativeHost() = requireNotNull(DevMenuManager.getMenuHost()).reactNativeHost

      override fun getReactHost() = requireNotNull(DevMenuManager.getMenuHost()).reactHost

      override fun getLaunchOptions() = Bundle().apply {
        putString("uuid", UUID.randomUUID().toString())
        putBundle("appInfo", DevMenuManager.getAppInfo())
        putBundle("devSettings", DevMenuManager.getDevSettings())
        putBundle("menuPreferences", DevMenuManager.getMenuPreferences())
        putBoolean("isDevice", !isEmulator)
        putStringArray("registeredCallbacks", DevMenuManager.registeredCallbacks.map { it.name }.toTypedArray())
      }

      // NOTE: We could remove this suppress after dropping Expo SDK 51
      @Suppress("RETURN_TYPE_MISMATCH_ON_OVERRIDE")
      override fun createRootView(): ReactRootView? {
        if (rootViewWasInitialized()) {
          return rootView
        }
        return super.createRootView()
      }
    }
  }

  override fun onKeyUp(keyCode: Int, event: KeyEvent): Boolean {
    return if (keyCode == KeyEvent.KEYCODE_MENU || DevMenuManager.onKeyEvent(keyCode, event)) {
      DevMenuManager.closeMenu()
      true
    } else {
      super.onKeyUp(keyCode, event)
    }
  }

  override fun onPause() {
    super.onPause()
    overridePendingTransition(0, 0)
  }

  override fun onStart() {
    super.onStart()
    val reactHost = DevMenuManager.delegate?.reactHost() ?: return
    val supportsDevelopment = DevMenuManager.delegate?.supportsDevelopment() ?: false

    if (supportsDevelopment) {
      val devSupportManager = requireNotNull(reactHost.devSupportManager)
      devSupportManager.devSupportEnabled = true
    }
  }

  override fun setContentView(view: View?) {
    // Enables edge-to-edge
    WindowCompat.setDecorFitsSystemWindows(window, false)

    super.setContentView(R.layout.bottom_sheet)

    val mainLayout = findViewById<CoordinatorLayout>(R.id.main_layout)
    val bottomSheet = findViewById<FrameLayout>(R.id.bottom_sheet)

    // Adds transparent top padding to avoid the status bar
    ViewCompat.setOnApplyWindowInsetsListener(bottomSheet) { view, windowInsets ->
      val insets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars())
      view.updatePadding(top = insets.top)
      WindowInsetsCompat.CONSUMED
    }

    (view?.parent as? ViewGroup)?.removeView(view)
    bottomSheet.addView(view)

    BottomSheetBehavior.from(bottomSheet).apply {
      addBottomSheetCallback(object : BottomSheetBehavior.BottomSheetCallback() {
        override fun onStateChanged(bottomSheet: View, newState: Int) {
          if (newState == BottomSheetBehavior.STATE_HIDDEN || newState == BottomSheetBehavior.STATE_COLLAPSED) {
            DevMenuManager.hideMenu()
          }
        }

        override fun onSlide(bottomSheet: View, slideOffset: Float) = Unit
      })

      bottomSheet.doOnLayout {
        state = BottomSheetBehavior.STATE_HALF_EXPANDED
      }

      mainLayout.setOnClickListener {
        state = BottomSheetBehavior.STATE_HIDDEN
      }
    }
  }

  fun closeBottomSheet() {
    val bottomSheet = findViewById<FrameLayout>(R.id.bottom_sheet)
    BottomSheetBehavior.from(bottomSheet).state = BottomSheetBehavior.STATE_HIDDEN
  }

  companion object {
    var appWasLoaded = false
    private lateinit var rootView: ReactRootView
    private lateinit var reactSurface: ReactSurface

    private fun rootViewWasInitialized(): Boolean {
      if (ReactNativeFeatureFlags.enableBridgelessArchitecture) {
        return ::rootView.isInitialized && ::reactSurface.isInitialized
      }
      return ::rootView.isInitialized
    }
  }
}