Downloader.java

package com.jadn.cc.ui;

import java.io.BufferedReader;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.LinkedList;
import java.util.zip.GZIPOutputStream;

import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.TextView;
import android.widget.Toast;

import com.jadn.cc.R;
import com.jadn.cc.core.CarCastApplication;
import com.jadn.cc.core.Sayer;
import com.jadn.cc.trace.TraceData;
import com.jadn.cc.util.Updater;

/**
 * Lets the user observe download details in all their command line glory.
 *
 * @author bob
 *
 */
public class Downloader extends BaseActivity implements Sayer, Runnable {

	final Handler handler = new Handler() {
		@Override
		public void handleMessage(Message m) {
			tv.append(m.getData().getCharSequence("text"));
		}
	};

	TextView tv;
	Updater updater;

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.download);

		tv = (TextView) findViewById(R.id.textconsole);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		MenuInflater inflater = getMenuInflater();
		inflater.inflate(R.menu.downloads_menu, menu);
		return true;
	}

	@Override
	public boolean onMenuItemSelected(int featureId, MenuItem item) {
        Toast.makeText(getApplicationContext(), "Creating email report...", Toast.LENGTH_LONG).show();

        new Thread(new Runnable() {
            @Override
            public void run() {
                Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
                emailIntent.setType("plain/text");
                emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL,
                        new String[] { "carcast-devs@googlegroups.com", "bob@jadn.com" });
                emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT,
                        "Issue on download...");

                // need to clean these up at some point
                String strFile = Environment.getExternalStorageDirectory().getAbsolutePath() + "/ccreprt"+System.currentTimeMillis()+".txt.gz";

                StringBuilder sb = new StringBuilder();
                sb.append("Thanks. Please describe the problem. \n\n=== Basic Info ===\n");
                nv(sb, "package_name", TraceData.APP_PACKAGE);
                nv(sb, "package_version", TraceData.APP_VERSION);
                nv(sb, "phone_model", TraceData.PHONE_MODEL);
                nv(sb, "android_version", TraceData.ANDROID_VERSION);
                sb.append("\nCar Cast Download output\n====================\n");
                sb.append(tv.getText());
                sb.append("\nLog snapshot\n============\n");
                fetchLog(sb);

                try {
                    GZIPOutputStream gzipOutputStream  = new GZIPOutputStream(new FileOutputStream(strFile));
                    gzipOutputStream.write(sb.toString().getBytes());
                    gzipOutputStream.close();

                    emailIntent.putExtra(Intent.EXTRA_STREAM,
                            Uri.parse("file://" + strFile));

                    emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, "This email includes an attachment which describes the internals of your phone when CarCast was running.\n\nPlease add to here, (1) what is the problem as you see it?  (2) Does it happen everytime?\n\nThanks\n");
                } catch (IOException e) {
                    e.printStackTrace();

                    emailIntent.putExtra(android.content.Intent.EXTRA_TEXT, "Bah! couldnt attach report: " + e.getMessage());
                }


                startActivity(Intent.createChooser(emailIntent,
                        "Email about podcast downloading"));

            }
        }).start();


		return true;
	}

	private void nv(StringBuilder sb, String name, String value) {
		int start = sb.length();
		sb.append(name);
		while (sb.length()<start+15)
			sb.append(' ');
		sb.append(':');
		sb.append(value);
		sb.append('\n');
	}

	@Override
	protected void onPause() {
		super.onPause();

		// stop display thread
		updater.allDone();
	}

	@Override
	protected void onResume() {
		super.onResume();
		updater = new Updater(handler, this);
	}

	// Called once a second in the UI thread to update the screen.
	@Override public void run() {
		try {
			String text = contentService.getDownloadProgress();
			if (text.length() != 0)
				tv.setText(text);
			else {
				tv.setText("\n\n\nNo download has run or is running.");
			}
		} catch (Exception e) {
			CarCastApplication.esay(e);
		}
	}

	@Override public void say(String text) {
		Message message = Message.obtain();
		Bundle bundle = new Bundle();
		bundle.putCharSequence("text", text + "\n");
		message.setData(bundle);
		handler.sendMessage(message);
	}

	void fetchLog(StringBuilder log) {
		BufferedReader reader = null;
		try {
			Process process = Runtime.getRuntime().exec(
					new String[] { "logcat", "-v", "time", "-d" });
			reader = new BufferedReader(new InputStreamReader(process
					.getInputStream()));
			String line;
			LinkedList<String> lines = new LinkedList<String>();
			while ((line = reader.readLine()) != null) {
				// life's too short to ever look at these again.
				if(line.startsWith("D/dalvikvm(")&& line.indexOf("GC freed")!=-1)
					continue;
				lines.add(line);
				if(lines.size()>1000){
					lines.remove(0);
				}
			}
			for (String aline : lines) {
				log.append(aline);
				log.append('\n');
			}
			System.out.println("Captured "+lines+" lines.");
		} catch (IOException e) {
			log.append("Problem running logcat: " + e.getMessage());
		} finally {
			if (reader != null)
				try {
					reader.close();
				} catch (IOException e) {
				}
		}
	}
}