Conversations/src/eu/siacs/conversations/services/ImageProvider.java

package eu.siacs.conversations.services;

import java.io.File;
import java.io.FileNotFoundException;

import eu.siacs.conversations.entities.Account;
import eu.siacs.conversations.entities.Conversation;
import eu.siacs.conversations.entities.Message;
import eu.siacs.conversations.persistance.DatabaseBackend;
import eu.siacs.conversations.persistance.FileBackend;

import android.content.ContentProvider;
import android.content.ContentValues;
import android.database.Cursor;
import android.net.Uri;
import android.os.ParcelFileDescriptor;
import android.util.Log;

public class ImageProvider extends ContentProvider {

	@Override
	public ParcelFileDescriptor openFile(Uri uri, String mode)
			throws FileNotFoundException {
		DatabaseBackend databaseBackend = DatabaseBackend
				.getInstance(getContext());
		FileBackend fileBackend = new FileBackend(getContext());
		String uuids = uri.getPath();
		Log.d("xmppService", "uuids = " + uuids);
		if (uuids == null) {
			throw new FileNotFoundException();
		}
		String[] uuidsSplited = uuids.split("/");
		if (uuidsSplited.length != 3) {
			throw new FileNotFoundException();
		}
		String conversationUuid = uuidsSplited[1];
		String messageUuid = uuidsSplited[2];

		Conversation conversation = databaseBackend
				.findConversationByUuid(conversationUuid);
		if (conversation == null) {
			throw new FileNotFoundException("conversation " + conversationUuid
					+ " could not be found");
		}
		Message message = databaseBackend.findMessageByUuid(messageUuid);
		if (message == null) {
			throw new FileNotFoundException("message " + messageUuid
					+ " could not be found");
		}

		Account account = databaseBackend.findAccountByUuid(conversation
				.getAccountUuid());
		if (account == null) {
			throw new FileNotFoundException("account "
					+ conversation.getAccountUuid() + " cound not be found");
		}
		message.setConversation(conversation);
		conversation.setAccount(account);

		File file = fileBackend.getJingleFile(message);
		ParcelFileDescriptor pfd = ParcelFileDescriptor.open(file,
				ParcelFileDescriptor.MODE_READ_ONLY);
		return pfd;
	}

	@Override
	public int delete(Uri arg0, String arg1, String[] arg2) {
		return 0;
	}

	@Override
	public String getType(Uri arg0) {
		return null;
	}

	@Override
	public Uri insert(Uri arg0, ContentValues arg1) {
		return null;
	}

	@Override
	public boolean onCreate() {
		return false;
	}

	@Override
	public Cursor query(Uri arg0, String[] arg1, String arg2, String[] arg3,
			String arg4) {
		return null;
	}

	@Override
	public int update(Uri arg0, ContentValues arg1, String arg2, String[] arg3) {
		return 0;
	}

}