root/trunk/rapidandroid/org.rapidandroid/src/org/rapidandroid/data/controller/ParsedDataReporter.java @ 133

/*
 *    rapidandroid - SMS gateway for the android platform
 *    Copyright (C) 2009 Dimagi Inc., UNICEF
 *
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
package org.rapidandroid.data.controller;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.ParseException;
import java.util.Calendar;
import java.util.Date;
import java.util.zip.GZIPOutputStream;

import org.rapidandroid.data.RapidSmsDBConstants;
import org.rapidandroid.data.SmsDbHelper;
import org.rapidsms.java.core.Constants;
import org.rapidsms.java.core.model.Form;
import org.rapidsms.java.core.model.Message;

import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Environment;

/**
 * 
 * @author Daniel Myung [email protected]
 * @created Jan 30, 2009
 * 
 */
public class ParsedDataReporter {

        private String[] messageColumns = new String[] { "message_time", "monitor_id", "monitor_phone", "message_text" };

        public synchronized static Date getOldestMessageDate(Context context, Form f) {
                SmsDbHelper mHelper = new SmsDbHelper(context);
                Date toReturn = getOldestMessageDate(mHelper, f);
                mHelper.close();
                return toReturn;

        }

        public synchronized static Date getOldestMessageDate(SmsDbHelper mHelper, Form f) {
                // TODO Auto-generated method stub
                StringBuilder query = new StringBuilder();
                query.append("select min(rapidandroid_message.time) ");
                query.append(" from " + RapidSmsDBConstants.FormData.TABLE_PREFIX + f.getPrefix());
                query.append(" join rapidandroid_message on (");
                query.append(RapidSmsDBConstants.FormData.TABLE_PREFIX + f.getPrefix());
                query.append(".message_id = rapidandroid_message._id");
                query.append(") ");

                SQLiteDatabase db = mHelper.getReadableDatabase();
                Cursor cr = db.rawQuery(query.toString(), null);
                if (cr.getCount() == 0) {
                        cr.close();
                        db.close();
                        // this is the caller's responsibility
                        // mHelper.close();
                        return Constants.NULLDATE;

                }
                cr.moveToFirst();
                String dateString = cr.getString(0);

                if (dateString == null) {
                        cr.close();
                        db.close();
                        // this is the caller's responsibility
                        // mHelper.close();
                        return Constants.NULLDATE;
                }

                Date ret = new Date();
                try {
                        ret = Message.SQLDateFormatter.parse(dateString);
                } catch (ParseException e) {
                        // TODO Auto-generated catch block

                        e.printStackTrace();
                        try {
                                if (cr != null) {
                                        cr.close();
                                }
                                if (db != null) {
                                        db.close();
                                }
                                if (mHelper != null) {
                                        // this is the caller's responsibility
                                        // mHelper.close();
                                }
                        } catch (Exception ex2) {

                        }
                }
                cr.close();
                db.close();
                // this is the caller's responsibility
                // mHelper.close();
                return ret;
        }

        public synchronized static void exportFormDataToCSV(Context context, Form f, Calendar startDate, Calendar endDate) {
                SmsDbHelper mHelper = new SmsDbHelper(context);
                // build the query
                StringBuilder query = new StringBuilder();
                query.append("select " + RapidSmsDBConstants.FormData.TABLE_PREFIX);
                query.append(f.getPrefix() + ".*");
                query
                                .append(", rapidandroid_message.message,rapidandroid_message.time, rapidandroid_monitor._id as monitor_id, rapidandroid_monitor.phone as monitor_phone ");
                query.append(" from " + RapidSmsDBConstants.FormData.TABLE_PREFIX + f.getPrefix());
                query.append(" join rapidandroid_message on (");
                query.append(RapidSmsDBConstants.FormData.TABLE_PREFIX + f.getPrefix());
                query.append(".message_id = rapidandroid_message._id");
                query.append(") ");

                query.append(" join rapidandroid_monitor on (");
                query.append("rapidandroid_monitor._id = rapidandroid_message.monitor_id");
                query.append(") ");

                query.append("WHERE rapidandroid_message.time > '" + startDate.get(Calendar.YEAR) + "-"
                                + (startDate.get(Calendar.MONTH) + 1) + "-" + startDate.get(Calendar.DATE) + "' AND ");
                query.append(" rapidandroid_message.time < '" + endDate.get(Calendar.YEAR) + "-"
                                + (1 + endDate.get(Calendar.MONTH)) + "-" + endDate.get(Calendar.DATE) + "';");

                Cursor cr = mHelper.getReadableDatabase().rawQuery(query.toString(), null);

                File sdcard = Environment.getExternalStorageDirectory();
                File destinationdir = new File(sdcard, "rapidandroid/exports");
                destinationdir.mkdir();
                Date now = new Date();
                File destinationfile = new File(destinationdir, "formdata_" + f.getPrefix() + now.getYear() + now.getMonth()
                                + now.getDate() + "-" + now.getHours() + now.getMinutes() + ".csv");
                FileOutputStream fOut = null;
                try {
                        destinationfile.createNewFile();
                        fOut = new FileOutputStream(destinationfile);
                        String[] cols = cr.getColumnNames();
                        int colcount = cols.length;
                        StringBuilder sbrow = new StringBuilder();
                        for (int i = 0; i < colcount; i++) {
                                // sbrow.append(cols[i] + ",");
                                sbrow.append(cols[i]);
                                if (i < colcount - 1) {
                                        sbrow.append(",");
                                } else {
                                        sbrow.append("\n");
                                }
                        }
                        fOut.write(sbrow.toString().getBytes());
                        cr.moveToFirst();
                        do {
                                sbrow = new StringBuilder();
                                for (int i = 0; i < colcount; i++) {
                                        // sbrow.append(cr.getString(i) + ",");
                                        sbrow.append(cr.getString(i));
                                        if (i < colcount - 1) {
                                                sbrow.append(",");
                                        } else {
                                                sbrow.append("\n");
                                        }
                                }
                                fOut.write(sbrow.toString().getBytes());
                        } while (cr.moveToNext());
                } catch (IOException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                } finally {
                        cr.close();
                        mHelper.close();
                        if (fOut != null) {
                                try {
                                        fOut.close();
                                } catch (IOException e) {
                                        // TODO Auto-generated catch block
                                        e.printStackTrace();
                                }
                        }
                        // compressFile(destinationfile);
                }

        }

        void compressFile(File rawFile) {
                FileInputStream fin = null;
                GZIPOutputStream gz = null;
                try {
                        fin = new FileInputStream(rawFile);
                        FileOutputStream fout = new FileOutputStream(rawFile.getAbsoluteFile() + ".gz");
                        gz = new GZIPOutputStream(fout);
                        byte[] buf = new byte[4096];
                        int readCount;
                        while ((readCount = fin.read(buf)) != -1) {
                                gz.write(buf, 0, readCount);
                        }

                } catch (Exception ex) {
                } finally {
                        // Close the BufferedInputStream
                        try {
                                if (fin != null)
                                        fin.close();
                                if (gz != null)
                                        gz.close();
                        } catch (IOException ex) {
                                ex.printStackTrace();
                        }

                }
        }
}