package com.reactnativekeyboardcontroller.modules

import android.content.Context
import android.view.View
import android.view.WindowManager
import android.view.inputmethod.InputMethodManager
import com.facebook.react.bridge.ReactApplicationContext
import com.facebook.react.bridge.UiThreadUtil
import com.reactnativekeyboardcontroller.traversal.FocusedInputHolder
import com.reactnativekeyboardcontroller.traversal.ViewHierarchyNavigator

class KeyboardControllerModuleImpl(
  private val mReactContext: ReactApplicationContext,
) {
  private val mDefaultMode: Int = getCurrentMode()

  fun setInputMode(mode: Int) {
    setSoftInputMode(mode)
  }

  fun setDefaultMode() {
    setSoftInputMode(mDefaultMode)
  }

  fun dismiss(keepFocus: Boolean) {
    val activity = mReactContext.currentActivity
    val view: View? = FocusedInputHolder.get()

    if (view != null) {
      UiThreadUtil.runOnUiThread {
        val imm = activity?.getSystemService(Context.INPUT_METHOD_SERVICE) as? InputMethodManager
        imm?.hideSoftInputFromWindow(view.windowToken, 0)
        if (!keepFocus) {
          view.clearFocus()
        }
      }
    }
  }

  fun setFocusTo(direction: String) {
    if (direction == "current") {
      UiThreadUtil.runOnUiThread {
        FocusedInputHolder.focus()
      }

      return
    }

    val view: View? = FocusedInputHolder.get()

    if (view != null) {
      ViewHierarchyNavigator.setFocusTo(direction, view)
    }
  }

  private fun setSoftInputMode(mode: Int) {
    UiThreadUtil.runOnUiThread {
      if (getCurrentMode() != mode) {
        mReactContext.currentActivity?.window?.setSoftInputMode(mode)
      }
    }
  }

  private fun getCurrentMode(): Int =
    mReactContext
      .currentActivity
      ?.window
      ?.attributes
      ?.softInputMode
      ?: WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED

  companion object {
    const val NAME = "KeyboardController"
  }
}