package com.scsoft;

import android.os.Bundle;
import android.text.TextUtils;

import com.scsoft.libecho5.BarcodeScanner;
import com.scsoft.libecho5.Gpio;
import com.scsoft.module.base.ActivityBaseAppCompat;

import java.io.FileDescriptor;
import java.util.concurrent.TimeUnit;

import io.reactivex.Observable;
import io.reactivex.ObservableSource;
import io.reactivex.functions.Function;
import io.reactivex.schedulers.Schedulers;

public class ActivityEntry extends ActivityBaseAppCompat {

    FileDescriptor fileDescriptor;
    Gpio gpio;
    BarcodeScanner scanner;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
//        startActivity(new Intent(this, ActivitySplash.class));
//        finish();
        setContentView(R.layout.activity_splash);
        gpio = new Gpio();
        scanner = new BarcodeScanner();
        if (gpio.BarcodeScanner_Enable() == 0) {
            showToastShort("BarcodeScanner_Enable");
        }
        fileDescriptor = scanner.BarcodeScanner_OpenPort(9600);
        if (fileDescriptor != null) {
            showToastShort("BarcodeScanner_OpenPort");
        }

        addDisposables(
                Observable.interval(500, TimeUnit.MILLISECONDS)
                        .subscribeOn(Schedulers.io())
                        .flatMap((Function<Long, ObservableSource<String>>)
                                aLong -> Observable.just(readBarcode()))
                        .subscribe(barcode -> {
                            if (!TextUtils.isEmpty(barcode)) showToastShort(barcode);
                        }, Throwable::printStackTrace, () -> {
                        }));

    }

    public String readBarcode() {
        triggerTRIGPin(true);
        final StringBuilder strRead = new StringBuilder();
        int bytesRead = 0;
        do {
            final byte[] buf = new byte[2048];
            bytesRead = scanner.BarcodeScanner_ReadData(fileDescriptor, buf, buf.length, 10 * 1000);
            if ((bytesRead > 0)) strRead.append(new String(buf));
        } while (bytesRead > 0);
        triggerTRIGPin(false);
        return removeEscape(strRead.toString());
    }

    private void triggerTRIGPin(boolean enabled) {
        scanner.BarcodeScanner_Trigger(!enabled);
    }

    private String removeEscape(final String str) {
        return str.replace("\r\n\u0000", "")
                .replaceAll("\u0000", "")
                .replaceAll("\r", "")
                .replaceAll("\n", "")
                .replaceAll("\b", "")
                .replace("\\000026", "");
    }

}