package com.barcodescanner

import android.util.Log
import com.facebook.react.bridge.Promise
import com.facebook.react.bridge.ReactApplicationContext
import com.facebook.react.module.annotations.ReactModule
import com.google.zxing.BinaryBitmap
import com.google.zxing.MultiFormatReader
import com.google.zxing.NotFoundException
import com.google.zxing.RGBLuminanceSource
import com.google.zxing.common.HybridBinarizer
import java.io.File



@ReactModule(name = ScanFromFileModule.NAME)
class ScanFromFileModule(reactContext: ReactApplicationContext) :
  NativeScanQRFileSpec(reactContext) {
  companion object {
    const val NAME = "ScanQRFile"
  }

  override fun getName(): String {
    return NAME
  }

  override fun scan(filePath: String?, promise: Promise?) {
    runCatching {
      val bitmap = BitmapUtils.getResizedBitmap(filePath, 800, 600)
      if (bitmap == null) {
        promise?.resolve(null)
      } else {
        val width = bitmap.width
        val height = bitmap.height
        val pixels = IntArray(width * height)

        bitmap.getPixels(pixels, 0, width, 0, 0, width, height)

        val source = RGBLuminanceSource(width, height, pixels)
        val bBitmap = BinaryBitmap(HybridBinarizer(source))
        val reader = MultiFormatReader()

        Log.e("ScanFromFileModule", "scan: " + bBitmap.width + " " + bBitmap.height)
        val result = reader.decodeWithState(bBitmap)
        Log.e("ScanFromFileModule","result: " + result.text)

        bitmap.recycle()
        promise?.resolve(result.text)
      }
    }.onFailure {
      it.printStackTrace()
      promise?.resolve(null)
    }
  }
}