package com.example.surgerylog;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Calendar;
import java.util.List;
import net.redroid.medlog.R;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;

import com.csvreader.CsvReader;
import com.csvreader.CsvWriter;

public class FileOperationsFragment extends Fragment {
	/**
	 * The fragment argument representing the section number for this fragment.
	 */
	public static final String ARG_SECTION_NUMBER = "section_number";

	MainActivity _activity;

	public FileOperationsFragment() {
	}

	@Override
	public void onAttach(Activity activity) {
		super.onAttach(activity);

		// This makes sure that the container activity has implemented
		// the callback interface. If not, it throws an exception
		try {
			_activity = (MainActivity) activity;
		} catch (ClassCastException e) {
			throw new ClassCastException(activity.toString()
					+ " must implement OnHeadlineSelectedListener");
		}
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		// get root view
		View rootView = inflater.inflate(R.layout.fragment_file_operations,
				container, false);

		return rootView;
	}

	@Override
	public void onActivityCreated(Bundle savedInstanceState) {
		// set import MedLog config button
		Button importFile = (Button) getView().findViewById(R.id.importButton);
		importFile.setOnClickListener(new View.OnClickListener() {
			public void onClick(View v) {
				try {
					// create csv values
					CsvReader reader = new CsvReader(
							_activity.TemplateDescriptionFile);

					// read headers
					if (reader.readHeaders() == false) {
						// could not read headers
						//Log.e("Error", "Headers could not be read.");
					}

					// copy back headers
					String headers[] = reader.getHeaders();

					// check number of headers
					if (headers.length != _activity.ProcessDescriptionFileNumColumns) {
						// number of headers is incorrect
						//Log.e("Error", "CSV has incorrect number of headers.");
					} else {
						// everything seems nice.... lets rebuild the tree
						_activity.Root = new MedLogRoot();
					}

					// read records
					while (reader.readRecord() == true) {
						// get record info into
						MedLogInfo surgeryInfo = new MedLogInfo(reader
								.get(headers[0]), // med type
								reader.get(headers[1]), // med subtype
								reader.get(headers[2]), // med sub-subtype
								reader.get(headers[3]), // pathology
								reader.get(headers[4]) // intervention
						);

						surgeryInfo.FirstAider = reader.get(headers[5]); // first
																			// aider
						surgeryInfo.Anesthesia = reader.get(headers[6]); // anesthesia
						surgeryInfo.Place = reader.get(headers[7]); // place

						// add info to grow tree
						_activity.Root.GrowTreeWithInfo(surgeryInfo);
					}

					// close csv reading file
					reader.close();
				} catch (FileNotFoundException e) {
					//Log.e("Error", "Config file not found.");
				} catch (IOException e) {
					//Log.e("Error", "Config file IO error.");
				}

				_activity.SaveMedLogConfig();
			}
		});

		// set export data base button
		Button exportDbBtn = (Button) getView().findViewById(
				R.id.exportDataBase);
		exportDbBtn.setOnClickListener(new View.OnClickListener() {
			public void onClick(View v) {

				//Log.e("Trace Export", "Exporting data");

				CsvWriter writer = null;
				boolean success = false;
				try {

					//Log.e("Trace Export", "Trying to open file");

					writer = new CsvWriter(_activity.ExportFile);

					//Log.e("Trace Export", "Writing headers");

					// Write descriptive headers.
					String[] headers = { "process number", "surgery number",
							"date", "type", "subtype", "subsubtype",
							"pathology", "intervention", "first aider",
							"anesthesia", "place", "urgency", "notes" };
					writer.writeRecord(headers);

					//Log.e("Trace Export", "Writing records...");
					
					// write all the records to CSV
					String[] record = new String[headers.length];
					for (MedLogInfo log : _activity.DataBase) {
						record[0] = log.ProcessNumber.toString();
						record[1] = log.SurgeryNumber.toString();
						record[2] = log.GetFormatedDate();
						record[3] = log.Type;
						record[4] = log.SubType;
						record[5] = log.SubSubType;
						record[6] = log.Pathology;
						record[7] = log.Intervention;
						record[8] = log.FirstAider;
						record[9] = log.Anesthesia;
						record[10] = log.Place;
						record[11] = _activity.getString(log.Urgency == true ? R.string.yes_str : R.string.no_str);
						record[12] = log.Notes;
						writer.writeRecord(record);
					}

					String message = _activity.getString(R.string.exportMessage_str)
							+ "'"
							+ _activity.ExportFile + "'";
					_activity.ShowMessage(message);

					//Log.e("Trace Export", "Done");

					success = true;
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} finally {
					writer.close();
					if (success == false) {
						_activity.ShowMessage(R.string.exportMessageError_str);
					}
				}
			}
		});

		super.onActivityCreated(savedInstanceState);
	}
}