package com.biopassid.fingerprintsdkreactnative

import android.graphics.Bitmap
import android.graphics.Rect
import android.util.Log
import br.com.biopassid.fingerprintsdk.Fingerprint
import br.com.biopassid.fingerprintsdk.engine.FingerprintCaptureListener
import br.com.biopassid.fingerprintsdk.engine.FingerprintCaptureState
import com.facebook.react.bridge.ReactApplicationContext
import com.facebook.react.bridge.ReactContextBaseJavaModule
import com.facebook.react.bridge.ReactMethod
import com.facebook.react.bridge.Promise
import com.facebook.react.bridge.ReactContext
import com.facebook.react.bridge.ReadableMap
import com.facebook.react.bridge.WritableMap
import com.facebook.react.modules.core.DeviceEventManagerModule

class FingerprintSdkReactNativeModule(reactContext: ReactApplicationContext) :
  ReactContextBaseJavaModule(reactContext) {

  private var listenerCount = 0

  override fun getName(): String {
    return NAME
  }

  @ReactMethod
  fun addListener(eventName: String) {
    if (listenerCount == 0) {
      // Set up any upstream listeners or background tasks as necessary
    }

    listenerCount += 1
  }

  @ReactMethod
  fun removeListeners(count: Int) {
    listenerCount -= count

    if (listenerCount == 0) {
      // Remove upstream listeners, stop unnecessary background tasks
    }
  }

  @ReactMethod
  fun takeFingerprint(fingerprintConfig: ReadableMap, promise: Promise) {
    try {
      val config = Utils.mapToBioPassIDFingerprintConfig(reactApplicationContext, fingerprintConfig)

      val listener = object : FingerprintCaptureListener {
        override fun onFingerCapture(images: List<Bitmap>, error: String?) {
          val nativeMap = Utils.onFingerCaptureEventToNativeMap(images, error)
          sendEvent(
            reactApplicationContext,
            "fingerprint-sdk-react-native/onFingerCapture",
            nativeMap
          )
        }

        override fun onStatusChanged(state: FingerprintCaptureState) {
          val nativeMap = Utils.onStatusChangedEventToNativeMap(state)
          sendEvent(
            reactApplicationContext,
            "fingerprint-sdk-react-native/onStatusChanged",
            nativeMap
          )
        }

        override fun onFingerDetected(fingerRects: List<Rect>) {
          val nativeMap = Utils.onFingerDetectedEventToNativeMap(fingerRects)
          sendEvent(
            reactApplicationContext,
            "fingerprint-sdk-react-native/onFingerDetected",
            nativeMap
          )
        }
      }

      Fingerprint.takeFingerprint(reactApplicationContext.currentActivity, config, listener)

      promise.resolve(true)
    } catch (e: Exception) {
      Log.e(TAG, e.message.toString())
      promise.reject("Error calling Fingerprint SDK", e)
    }
  }

  private fun sendEvent(reactContext: ReactContext, eventName: String, params: WritableMap) {
    reactContext
      .getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter::class.java)
      .emit(eventName, params)
  }

  companion object {
    const val NAME = "FingerprintSdkReactNative"

    private val TAG = FingerprintSdkReactNativeModule::class.java.simpleName
  }
}