package de.thedevstack.conversationsplus.utils;

import android.annotation.TargetApi;
import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;
import android.provider.DocumentsContract;
import android.provider.MediaStore;

import de.thedevstack.conversationsplus.ConversationsPlusApplication;

/**
 * Created by tzur on 30.10.2015.
 */
public final class FileHelper {

    /**
     * taken from: http://stackoverflow.com/a/29164361
     * @param uri
     * @return
     */
    @TargetApi(19)
    private static String getRealPathFromUriLollipop(Uri uri) {
        String path = null;

        String wholeID = DocumentsContract.getDocumentId(uri);

        // Split at colon, use second item in the array
        String id = wholeID.split(":")[1];

        String[] column = { MediaStore.Images.Media.DATA };

        // where id is equal to
        String sel = MediaStore.Images.Media._ID + "=?";

        Cursor cursor = ConversationsPlusApplication.getInstance().getContentResolver().
                query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                        column, sel, new String[]{ id }, null);

        int columnIndex = cursor.getColumnIndex(column[0]);

        if (cursor.moveToFirst()) {
            path = cursor.getString(columnIndex);
        }
        cursor.close();
        return path;
    }

    /**
     * Get the real path from an Uri.
     * @param uri the uri to convert to the real path
     * @return the real path or <code>null</code>
     */
    public static String getRealPathFromUri(Uri uri) {
        String path = null;
        if (ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
            return uri.getPath();
        } else if (ContentResolver.SCHEME_CONTENT.equals(uri.getScheme())) {
            String[] projection = {MediaStore.MediaColumns.DATA};
            Cursor metaCursor = ConversationsPlusApplication.getInstance().getContentResolver().query(uri,
                    projection, null, null, null);
            if (metaCursor != null) {
                try {
                    if (metaCursor.moveToFirst()) {
                        path = metaCursor.getString(0);
                    }
                } finally {
                    metaCursor.close();
                }
            }
        }
        if (path == null) {
            path = getRealPathFromUriLollipop(uri);
        }
        return path;
    }

    private FileHelper() {
        // Utility class - do not instantiate
    }
}