import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.Writer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.ini4j.Ini;

/**
 * A transformer which can turn the .ini file you can export your Miranda contacts as into a FOAF file.
 */
public class ContactListTransformer
{
	//Mapping between protocol names in the .ini and FOAF-properties for identifiers from those protocols
	static Map<String,String> propNames = new HashMap<String,String>();
	static
	{
		propNames.put("JABBER", "jabberID");
		propNames.put("ICQ", "icqChatID");
		//The following keys I just assumed, I don't have those protocols in my contact list
		propNames.put("MSN", "msnChatID");
		propNames.put("AIM", "aimChatID");
		propNames.put("YAHOO", "yahooChatID");
	}

	/**
	 * Read an .ini file from inputPath, transform it into FOAF and output that to outputPath,
	 * using myURI as the URIref of the person this is the contact list of.
	 */
	public static void transform(String inputPath, String outputPath, String myURI)
		throws IOException
	{
		//Read file
		FileReader in = new FileReader(inputPath);
		Ini ini = new Ini();
		ini.load(in);
		in.close();

		//Open output file
		PrintWriter out = new PrintWriter( new FileWriter(outputPath) );

		//List for collecting group names, groups will be output later
		List<String> groups = new ArrayList<String>();

		//Header
		out.println("<?xml version=\"1.0\"?>");
		out.println("<rdf:RDF xmlns=\"http://xmlns.com/foaf/0.1/\" xmlns:rel=\"http://purl.org/vocab/relationship/\" xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\">");
		out.println();
		out.println("\t<PersonalProfileDocument rdf:about=\"\">");
		out.println("\t\t<maker rdf:resource=\"" + myURI + "\"/>");
		out.println("\t\t<primaryTopic rdf:resource=\"" + myURI + "\"/>");
		out.println("\t</PersonalProfileDocument>");
		out.println();
		out.println("\t<Person rdf:about=\"" + myURI + "\">");

		//Go through sections of the .ini which are the single contacts
		Collection<Ini.Section> values = ini.values();
		for (Ini.Section section : values)
		{
			//When there's an entry Hidden=1, don't add this contact
			String hidden = section.get("Hidden");
			if (hidden != null && hidden.equals("1"))
				continue;

			//Collect properties of contact
			String id = section.get("ID");
			String nick = section.get("CListNick");
			String protocol = section.get("Proto");
			String groupName = section.get("CListGroup");

			//Start writing contact info
			out.println("\t\t<knows>");
			out.println("\t\t\t<Person>");

			//Output nick if there is one
			if (nick != null && !nick.equals(""))
				out.println("\t\t\t\t<nick>" + nick + "</nick>");

			//Output ID with the appropriate property if we have one for this protocol
			String propName = propNames.get(protocol);
			if (propName != null)
				out.println("\t\t\t\t<" + propName + ">" + id + "</" + propName + ">");

			//Output group membership
			if (groupName != null)
			{
				int groupNo;
				//See if we had this group before
				if (!groups.contains(groupName))
				{
					groups.add(groupName);
					groupNo = groups.size() - 1;
				}
				else
					groupNo = groups.lastIndexOf(groupName);

				//The group will be a b-node pointed to with the identifier "groupN" where N is the index of the group entry in the list
				out.println("\t\t\t\t<member rdf:nodeID=\"group" + groupNo + "\"/>");
			}

			//Done with this contact
			out.println("\t\t\t</Person>");
			out.println("\t\t</knows>");
		}

		//Done with all contact relations
		out.println("\t</Person>");
		out.println();

		//Output groups
		for (int i = 0, len = groups.size(); i < len; i++)
		{
			out.println("\t<Group rdf:nodeID=\"group" + i + "\"/>");
			out.println("\t\t<name>" + groups.get(i) + "</name>");
			out.println("\t</Group>");
		}

		//Footer
		out.println();
		out.print("</rdf:RDF>");

		//Close file
		out.close();
	}

	public static void main(String[] args)
		throws IOException
	{
		transform("ContactList.ini", "im_contacts.rdf", "http://simon-reinhardt.de/#me");
	}
}