package com.dji.importSDKDemo;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import dji.sdk.sdkmanager.DJISDKManager;

package com.dji.importSDKDemo;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;
import dji.sdk.sdkmanager.DJISDKManager;
import dji.sdk.base.DJIBaseComponent;
import dji.sdk.base.DJIBaseProduct;
import dji.sdk.base.DJIError;
import dji.sdk.base.DJISDKError;
public class MainActivity extends AppCompatActivity {
    private static final String TAG = MainActivity.class.getName();
    public static final String FLAG_CONNECTION_CHANGE = "dji_sdk_connection_change";
    private static DJIBaseProduct mProduct;
    private Handler mHandler;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        // When the compile and target version is higher than 22, please request the following permission at runtime to ensure the SDK works correctly.
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            ActivityCompat.requestPermissions(this,
                    new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.VIBRATE,
                            Manifest.permission.INTERNET, Manifest.permission.ACCESS_WIFI_STATE,
                            Manifest.permission.WAKE_LOCK, Manifest.permission.ACCESS_COARSE_LOCATION,
                            Manifest.permission.ACCESS_NETWORK_STATE, Manifest.permission.ACCESS_FINE_LOCATION,
                            Manifest.permission.CHANGE_WIFI_STATE, Manifest.permission.MOUNT_UNMOUNT_FILESYSTEMS,
                            Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.SYSTEM_ALERT_WINDOW,
                            Manifest.permission.READ_PHONE_STATE,
                    }
                    , 1);
        }
        
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                        .setAction("Action", null).show();
            }
        });
        //Initialize DJI SDK Manager
        mHandler = new Handler(Looper.getMainLooper());
        DJISDKManager.getInstance().initSDKManager(this, mDJISDKManagerCallback);
    }
    /*
     *  Implement DJISDKManager Callback methods
     */
    private DJISDKManager.DJISDKManagerCallback mDJISDKManagerCallback = new DJISDKManager.DJISDKManagerCallback() {
        @Override
        public void onGetRegisteredResult(DJIError error) {
            Log.d(TAG, error == null ? "success" : error.getDescription());
            if(error == DJISDKError.REGISTRATION_SUCCESS) {
                DJISDKManager.getInstance().startConnectionToProduct();
                Handler handler = new Handler(Looper.getMainLooper());
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(getApplicationContext(), "Success", Toast.LENGTH_LONG).show();
                    }
                });
            } else {
                Handler handler = new Handler(Looper.getMainLooper());
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(getApplicationContext(), "register sdk fails, check if network is available", Toast.LENGTH_LONG).show();
                    }
                });
            }
            Log.e("TAG", error.toString());
        }
        @Override
        public void onProductChanged(DJIBaseProduct oldProduct, DJIBaseProduct newProduct) {
            mProduct = newProduct;
            if(mProduct != null) {
                mProduct.setDJIBaseProductListener(mDJIBaseProductListener);
            }
            notifyStatusChange();
        }
    };
    /*
     *  Implement DJIBaseProductListener methods
     */
    private DJIBaseProduct.DJIBaseProductListener mDJIBaseProductListener = new DJIBaseProduct.DJIBaseProductListener() {
        @Override
        public void onComponentChange(DJIBaseProduct.DJIComponentKey key, DJIBaseComponent oldComponent, DJIBaseComponent newComponent) {
            if(newComponent != null) {
                newComponent.setDJIComponentListener(mDJIComponentListener);
            }
            notifyStatusChange();
        }
        @Override
        public void onProductConnectivityChanged(boolean isConnected) {
            notifyStatusChange();
        }
    };
    private DJIBaseComponent.DJIComponentListener mDJIComponentListener = new DJIBaseComponent.DJIComponentListener() {
        @Override
        public void onComponentConnectivityChanged(boolean isConnected) {
            notifyStatusChange();
        }
    };
    private void notifyStatusChange() {
        mHandler.removeCallbacks(updateRunnable);
        mHandler.postDelayed(updateRunnable, 500);
    }
    private Runnable updateRunnable = new Runnable() {
        @Override
        public void run() {
            Intent intent = new Intent(FLAG_CONNECTION_CHANGE);
            sendBroadcast(intent);
        }
    };
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}