package com.reactnativepaymentcardscanner;

import android.app.Activity;
import android.content.Intent;

import androidx.annotation.NonNull;

import com.facebook.react.bridge.ActivityEventListener;
import com.facebook.react.bridge.Promise;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReactContextBaseJavaModule;
import com.facebook.react.bridge.ReactMethod;
import com.facebook.react.bridge.WritableMap;
import com.facebook.react.bridge.WritableNativeMap;
import com.facebook.react.module.annotations.ReactModule;
import com.facebook.react.views.text.ReactFontManager;
import android.graphics.Typeface;

import java.util.HashMap;
import java.util.Map;

import ir.mohammadnavabi.paymentcardscanner.DebitCard;
import ir.mohammadnavabi.paymentcardscanner.ScanActivity;

@ReactModule(name = PaymentCardScannerModule.NAME)
public class PaymentCardScannerModule extends ReactContextBaseJavaModule implements ActivityEventListener {
  public static final String NAME = "PaymentCardScanner";
  ReactApplicationContext context = getReactApplicationContext();
  Promise mPromise = null;

  public PaymentCardScannerModule(ReactApplicationContext reactContext) {
    super(reactContext);

    this.context.addActivityEventListener(this);
  }

  @Override
  @NonNull
  public String getName() {
    return NAME;
  }

  @ReactMethod
  public void scan(String topText, String bottomText, String topTextFontFamily, String bottomTextFontFamily,
      Promise promise) {
    mPromise = promise;
    Activity currentActivity = getCurrentActivity();

    if (currentActivity == null) {
      promise.reject("E_ACTIVITY_DOES_NOT_EXIST", "Activity doesn't exist");
      return;
    }

    try {
      Typeface topTextTypeface = ReactFontManager.getInstance().getTypeface(topTextFontFamily, 0, context.getAssets());
      Typeface bottomTextTypeface = ReactFontManager.getInstance().getTypeface(bottomTextFontFamily, 0,
          context.getAssets());
      ScanActivity.start(currentActivity, topText, bottomText, topTextTypeface, bottomTextTypeface);
    } catch (Exception e) {
      promise.reject("E_FAILED_TO_SHOW_PICKER", e);
      mPromise = null;
    }
  }

  public WritableMap dataExtractor(Intent data) {
    DebitCard scanResult = ScanActivity.debitCardFromResult(data);

    HashMap<String, String> hm = new HashMap<>();
    hm.put("PAN", scanResult.number);
    hm.put("CVV", "");
    hm.put("EXP", String.valueOf(scanResult.expiryMonth) + "/" + String.valueOf(scanResult.expiryYear));
    WritableMap map = new WritableNativeMap();
    for (Map.Entry<String, String> entry : hm.entrySet()) {
      map.putString(entry.getKey(), entry.getValue());
    }

    return map;
  }

  @Override
  public void onActivityResult(Activity activity, int requestCode, int resultCode, Intent data) {
    try {
      if (mPromise == null) {
        return;
      } else if (ScanActivity.isScanResult(requestCode)) {
        if (resultCode == Activity.RESULT_OK && data != null) {
          mPromise.resolve(dataExtractor(data));
        } else if (resultCode == ScanActivity.RESULT_CANCELED) {
          boolean fatalError = data.getBooleanExtra(ScanActivity.RESULT_FATAL_ERROR, false);
          if (fatalError) {
            mPromise.reject("Fatal error");
          } else {
            mPromise.reject("The user pressed the back button");
          }
        }
      } else {
        mPromise.reject("Result error");
      }
    } catch (Exception e) {
      mPromise.reject("E_FAILED_TO_SHOW_PICKER", e);
      mPromise = null;
    }

    mPromise = null;
  }

  @Override
  public void onNewIntent(Intent intent) {
  }
}