package com.reactnativeandroidvolumecontrol

import android.view.KeyEvent
import com.facebook.react.bridge.*
import com.facebook.react.modules.core.DeviceEventManagerModule.RCTDeviceEventEmitter

class AndroidVolumeControlModule(private val reactContext: ReactApplicationContext) : ReactContextBaseJavaModule(reactContext) {

    override fun getName(): String {
      return "AndroidVolumeControlModule"
    }

    companion object Factory {
      private lateinit var instance: AndroidVolumeControlModule

      fun init(reactContext: ReactApplicationContext): AndroidVolumeControlModule {
          instance = AndroidVolumeControlModule(reactContext)
          return instance
      }

      fun getInstance(): AndroidVolumeControlModule {
        return instance
      }
    }

    private var isActivated = false

    @ReactMethod
    fun addListener(eventName: String?) {

    }

    @ReactMethod
    fun removeListeners(count: Int?) {

    }

    @ReactMethod
    fun setIsActivated(activate: Boolean) {
        isActivated = activate
    }

    private var allowedKeys = intArrayOf(24, 25)

    fun onKeyDownEvent(keyCode: Int, keyEvent: KeyEvent): Boolean {
      if (!isActivated || !reactContext.hasActiveReactInstance()) {
        return false
      }

      if (!allowedKeys.contains(keyCode)) {
        return false
      }

      reactContext.getJSModule(RCTDeviceEventEmitter::class.java).emit("onKeyDown", getJsEventParams(keyCode, keyEvent))

      return true
    }

    private fun getJsEventParams(keyCode: Int, keyEvent: KeyEvent): WritableMap {
      val params: WritableMap = WritableNativeMap()
      val action = keyEvent.getAction()
      val pressedKey = keyEvent.getUnicodeChar()

      params.putInt("keyCode", keyCode)
      params.putInt("action", action)
      params.putString("pressedKey", pressedKey.toString())
      return params
    }
}