Add export XML/CSV command and parsers

src/main/java/seedu/address/logic/commands/ExportEventXmlCommand.java

@@ -0,0 +1,139 @@
+package seedu.address.logic.commands;
+
+import static java.util.Objects.requireNonNull;
+
+import java.io.File;
+import java.util.List;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.transform.Transformer;
+import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.dom.DOMSource;
+import javax.xml.transform.stream.StreamResult;
+
+import org.w3c.dom.Attr;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+
+import seedu.address.commons.core.Messages;
+import seedu.address.commons.core.index.Index;
+import seedu.address.logic.CommandHistory;
+import seedu.address.logic.commands.exceptions.CommandException;
+import seedu.address.model.Model;
+import seedu.address.model.event.Event;
+
+/**
+ * Export an Event information as an XML
+ */
+public class ExportEventXmlCommand extends Command {
+
+    public static final String COMMAND_WORD = "exporteventxml";
+
+    public static final String MESSAGE_USAGE = COMMAND_WORD + ": exports an XML file of the event "
+            + "given the file path to the xml file\n"
+            + "Parameters: INDEX (must be a positive integer)\n"
+            + "Example: " + COMMAND_WORD + " 1";
+
+    private static final String MESSAGE_EXPORT_EVENT_SUCCESS = "Event at %1$d exported"
+            + "to your Desktop.";
+    private static final String MESSAGE_EXPORT_EVENT_FAILED = "Event export failed, please try again.";
+
+    private final Index index;
+    private final String exportTypeE = "EVENT";
+
+    /**
+     * @param index of volunteer or event in the filtered list
+     */
+    public ExportEventXmlCommand(Index index) {
+        requireNonNull(index);
+        this.index = index;
+    }
+
+    @Override
+    public CommandResult execute(Model model, CommandHistory history) throws CommandException {
+        requireNonNull(model);
+        List<Event> list = model.getFilteredEventList();
+
+        // Handle case where the index input exceeds or equals the size of the last displayed list
+        if (index.getZeroBased() >= list.size()) {
+            throw new CommandException(Messages.MESSAGE_INVALID_EVENT_DISPLAYED_INDEX);
+        }
+
+        // Get the Event object whom the index corresponds to
+        Event selectedEvent = list.get(index.getZeroBased());
+
+        try {
+            createEventXml(model, selectedEvent);
+        } catch (Exception e) {
+            throw new CommandException(MESSAGE_EXPORT_EVENT_FAILED);
+        }
+
+        return new CommandResult(MESSAGE_EXPORT_EVENT_SUCCESS);
+    }
+
+    /**
+     * Helper method to do the file creation and data writing
+     * @param model model to take the entire list
+     * @param event the specified event given on index
+     * @throws Exception - any given internal errors are thrown here
+     */
+    private void createEventXml (Model model, Event event) throws Exception {
+        //setting up the document builders
+        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
+        DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
+        Document doc = dBuilder.newDocument();
+
+        //root element - currently tag as event
+        Element rootElement = doc.createElement(exportTypeE);
+        doc.appendChild(rootElement);
+
+        //root attributes to this particular event listing the details
+        Attr eventNameAttr = doc.createAttribute("Name");
+        eventNameAttr.setValue(event.getName().toString());
+        rootElement.setAttributeNode(eventNameAttr);
+
+        Attr eventStartDateAttr = doc.createAttribute("Start Date");
+        eventStartDateAttr.setValue(event.getStartDate().toString());
+        rootElement.setAttributeNode(eventStartDateAttr);
+
+        Attr eventStartTimeAttr = doc.createAttribute("Start Time");
+        eventStartTimeAttr.setValue(event.getStartTime().toString());
+        rootElement.setAttributeNode(eventStartTimeAttr);
+
+        Attr eventEndDateAttr = doc.createAttribute("End Date");
+        eventEndDateAttr.setValue(event.getEndDate().toString());
+        rootElement.setAttributeNode(eventEndDateAttr);
+
+        Attr eventEndTimeAttr = doc.createAttribute("End Time");
+        eventEndTimeAttr.setValue(event.getEndTime().toString());
+        rootElement.setAttributeNode(eventEndTimeAttr);
+
+        Attr eventLocationAttr = doc.createAttribute("Location");
+        eventLocationAttr.setValue(event.getLocation().toString());
+        rootElement.setAttributeNode(eventLocationAttr);
+
+        Attr eventDescriptionAttr = doc.createAttribute("Description");
+        eventDescriptionAttr.setValue(event.getDescription().toString());
+        rootElement.setAttributeNode(eventDescriptionAttr);
+
+        Attr eventIdAttr = doc.createAttribute("Event ID");
+        eventIdAttr.setValue(event.getEventId().toString());
+        rootElement.setAttributeNode(eventIdAttr);
+
+        //elements 1 level below root - this is used to store volunteers for the event
+
+        // Setting up transformer
+        TransformerFactory transformerFactory = TransformerFactory.newInstance();
+        Transformer transformer = transformerFactory.newTransformer();
+        DOMSource source = new DOMSource(doc);
+
+        // Setting up file path
+        File output = new File(System.getProperty("user.home") + "/Desktop/"
+                + event.getName().toString() + ".xml");
+
+        // writing to file
+        StreamResult result = new StreamResult(output);
+        transformer.transform(source, result);
+    }
+}

src/main/java/seedu/address/logic/commands/ExportVolunteerCsvCommand.java

@@ -0,0 +1,114 @@
+package seedu.address.logic.commands;
+
+import static java.util.Objects.requireNonNull;
+
+import java.io.File;
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.List;
+
+import javafx.collections.ObservableList;
+import seedu.address.commons.core.Messages;
+import seedu.address.commons.core.index.Index;
+import seedu.address.logic.CommandHistory;
+import seedu.address.logic.commands.exceptions.CommandException;
+import seedu.address.model.Model;
+import seedu.address.model.volunteer.Volunteer;
+
+/**
+ * Exports a person's volunteer information from SocialCare
+ */
+public class ExportVolunteerCsvCommand extends Command {
+    public static final String COMMAND_WORD = "exportvolunteercsv";
+
+    public static final String MESSAGE_USAGE = COMMAND_WORD + ": Exports a CSV file of the volunteer "
+            + "the specified index in the displayed volunteer list.\n"
+            + "You can specify more than one volunteer to add to the CSV "
+            + "by adding a whitespace after each index number\n"
+            + "Parameters: INDEX1 (must be a positive integer) INDEX2 INDEX3 ...\n"
+            + "Example 1: " + COMMAND_WORD + " 1 2 3 4 5 6 7";
+
+    private static final String MESSAGE_EXPORT_VOLUNTEER_SUCCESS = "Volunteer(s) exported as CSV "
+            + "to your Desktop.";
+    private static final String MESSAGE_EXPORT_VOLUNTEER_FAILED = "Volunteer(s) export failed, please try again.";
+
+    private final ArrayList<Index> index;
+
+    /**
+     * @param index of volunteer or event in the filtered list
+     */
+    public ExportVolunteerCsvCommand(ArrayList<Index> index) {
+        requireNonNull(index);
+        this.index = index;
+    }
+
+
+    @Override
+    public CommandResult execute(Model model, CommandHistory history) throws CommandException {
+        requireNonNull(model);
+        List<Volunteer> list = model.getFilteredVolunteerList();
+
+        //Validate the given input within available index
+        for ( Index i : index ) {
+            // Handle case where the index input exceeds or equals the size of the last displayed list
+            if (i.getZeroBased() >= list.size()) {
+                throw new CommandException(Messages.MESSAGE_INVALID_VOLUNTEER_DISPLAYED_INDEX);
+            }
+        }
+
+        try {
+            createVolunteerCsv(model.getFilteredVolunteerList(), index);
+        } catch (Exception e) {
+            throw new CommandException(MESSAGE_EXPORT_VOLUNTEER_FAILED);
+        }
+
+        return new CommandResult(MESSAGE_EXPORT_VOLUNTEER_SUCCESS);
+
+    }
+
+    /**
+     * Helper method to create and write the csv file given the volunteer
+     * @param list to contain the list of volunteers from model
+     * @param index to hold the list of indexes to export
+     */
+    private void createVolunteerCsv(ObservableList<Volunteer> list, ArrayList<Index> index) throws Exception {
+        // Setting up file path
+        File output = new File(System.getProperty("user.home") + "/Desktop/"
+                + Integer.toString(index.size()) + "volunteers.csv");
+
+        // Setting up writer & stringbuilder for appending
+        PrintWriter pw = new PrintWriter(output);
+        StringBuilder sb = new StringBuilder();
+        String csvSplit = ",";
+
+        //appending column titles
+        sb.append("Name" + csvSplit);
+        sb.append("Phone" + csvSplit);
+        sb.append("Address" + csvSplit);
+        sb.append("Email" + csvSplit);
+        sb.append("Birthday" + csvSplit);
+        sb.append("Gender" + csvSplit);
+        sb.append("Tags" + csvSplit);
+        sb.append("VolunteerID");
+        sb.append(System.getProperty("line.separator"));
+
+        for ( Index i : index ) {
+            Volunteer volunteer = list.get(i.getOneBased());
+
+            //appending volunteer information accordingly
+            sb.append(volunteer.getName().toString() + csvSplit);
+            sb.append(volunteer.getPhone().toString() + csvSplit);
+            sb.append(volunteer.getAddress().toString() + csvSplit);
+            sb.append(volunteer.getEmail().toString() + csvSplit);
+            sb.append(volunteer.getBirthday().toString() + csvSplit);
+            sb.append(volunteer.getGender().toString() + csvSplit);
+            sb.append(volunteer.getTags().toString() + csvSplit);
+            sb.append(volunteer.getVolunteerId().toString() + csvSplit);
+            sb.append(System.getProperty("line.separator"));
+        }
+
+        pw.write(sb.toString());
+        pw.close();
+    }
+
+}