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package com.WazaBe.HoloEverywhere.internal;

import java.io.FileNotFoundException;
import java.util.List;

import android.content.Context;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.res.Resources;
import android.net.Uri;
import android.text.TextUtils;

public class ContentResolverCompat {

	public static class OpenResourceIdResult {
		public int id;
		public Resources r;
	}

	public static OpenResourceIdResult getResourceId(Context context, Uri uri)
			throws FileNotFoundException {
		String authority = uri.getAuthority();
		Resources r;
		if (TextUtils.isEmpty(authority)) {
			throw new FileNotFoundException("No authority: " + uri);
		} else {
			try {
				r = context.getPackageManager().getResourcesForApplication(
						authority);
			} catch (NameNotFoundException ex) {
				throw new FileNotFoundException(
						"No package found for authority: " + uri);
			}
		}
		List path = uri.getPathSegments();
		if (path == null) {
			throw new FileNotFoundException("No path: " + uri);
		}
		int len = path.size();
		int id;
		if (len == 1) {
			try {
				id = Integer.parseInt(path.get(0));
			} catch (NumberFormatException e) {
				throw new FileNotFoundException(
						"Single path segment is not a resource ID: " + uri);
			}
		} else if (len == 2) {
			id = r.getIdentifier(path.get(1), path.get(0), authority);
		} else {
			throw new FileNotFoundException("More than two path segments: "
					+ uri);
		}
		if (id == 0) {
			throw new FileNotFoundException("No resource found for: " + uri);
		}
		OpenResourceIdResult res = new OpenResourceIdResult();
		res.r = r;
		res.id = id;
		return res;
	}

	private ContentResolverCompat() {

	}

}