package com.yf.scan.scanner;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

import com.facebook.react.bridge.Callback;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.RGBLuminanceSource;
import com.google.zxing.Result;
import com.google.zxing.common.HybridBinarizer;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.List;

/**
 * Created by Abel on 2018/2/24.
 */

public class DecodeLocalImageUtils {

    public static void decodeLocalImg(String path, Callback callback) {
        Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
        List<BarcodeFormat> allFormats = new ArrayList<>();
        allFormats.add(BarcodeFormat.AZTEC);
        allFormats.add(BarcodeFormat.CODABAR);
        allFormats.add(BarcodeFormat.CODE_39);
        allFormats.add(BarcodeFormat.CODE_93);
        allFormats.add(BarcodeFormat.CODE_128);
        allFormats.add(BarcodeFormat.DATA_MATRIX);
        allFormats.add(BarcodeFormat.EAN_8);
        allFormats.add(BarcodeFormat.EAN_13);
        allFormats.add(BarcodeFormat.ITF);
        allFormats.add(BarcodeFormat.MAXICODE);
        allFormats.add(BarcodeFormat.PDF_417);
        allFormats.add(BarcodeFormat.QR_CODE);
        allFormats.add(BarcodeFormat.RSS_14);
        allFormats.add(BarcodeFormat.RSS_EXPANDED);
        allFormats.add(BarcodeFormat.UPC_A);
        allFormats.add(BarcodeFormat.UPC_E);
        allFormats.add(BarcodeFormat.UPC_EAN_EXTENSION);

        hints.put(DecodeHintType.TRY_HARDER, BarcodeFormat.QR_CODE);
        hints.put(DecodeHintType.POSSIBLE_FORMATS, allFormats);
        hints.put(DecodeHintType.CHARACTER_SET, "utf-8"); // 设置二维码内容的编码
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inJustDecodeBounds = true; // 先获取原大小
        options.inJustDecodeBounds = false; // 获取新的大小

        int sampleSize = (int) (options.outHeight / (float) 5);

        if (sampleSize <= 0)
            sampleSize = 1;
        options.inSampleSize = 2;
        Bitmap scanBitmap = null;
        if (path.startsWith("http://") || path.startsWith("https://")) {
            scanBitmap = getbitmap(path);
        } else {
            scanBitmap = BitmapFactory.decodeFile(path, options);
        }
        if (scanBitmap == null) {
            callback.invoke("-2", "加载失败");
            return;
        }
        int[] intArray = new int[scanBitmap.getWidth() * scanBitmap.getHeight()];
        scanBitmap.getPixels(intArray, 0, scanBitmap.getWidth(), 0, 0, scanBitmap.getWidth(), scanBitmap.getHeight());

        RGBLuminanceSource source = new RGBLuminanceSource(scanBitmap.getWidth(), scanBitmap.getHeight(), intArray);
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
        MultiFormatReader reader = new MultiFormatReader();
        try {
            Result result = reader.decode(bitmap, hints);
            if (result == null) {
                callback.invoke("-1", "未找到二维码或条形码");
            } else {
                callback.invoke(null, result.toString());
            }

        } catch (Exception e) {
            callback.invoke("-3", "解析失败");
        }
    }

    public static Bitmap getbitmap(String imageUri) {
        Bitmap bitmap = null;
        try {
            URL myFileUrl = new URL(imageUri);
            HttpURLConnection conn = (HttpURLConnection) myFileUrl.openConnection();
            conn.setDoInput(true);
            conn.connect();
            InputStream is = conn.getInputStream();
            bitmap = BitmapFactory.decodeStream(is);
            is.close();
        } catch (OutOfMemoryError e) {
            e.printStackTrace();
            bitmap = null;
        } catch (IOException e) {
            e.printStackTrace();
            bitmap = null;
        }
        return bitmap;
    }
}