/*
 * Copyright (C) 2014 Xiao-Long Chen <chillermillerlong@hotmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.dialer.lookup;

import android.content.Context;
import android.graphics.Bitmap;
import android.net.Uri;
import android.util.Log;

import com.android.dialer.phonenumbercache.ContactInfo;
import com.android.dialer.lookup.auskunft.AuskunftReverseLookup;
import com.android.dialer.lookup.dastelefonbuch.TelefonbuchReverseLookup;
import com.android.dialer.lookup.opencnam.OpenCnamReverseLookup;
import com.android.dialer.lookup.yellowpages.YellowPagesReverseLookup;
import com.android.dialer.lookup.zabasearch.ZabaSearchReverseLookup;

import java.io.IOException;

public abstract class ReverseLookup {
  private static final String TAG = ReverseLookup.class.getSimpleName();

  private static ReverseLookup INSTANCE = null;

  public static ReverseLookup getInstance(Context context) {
    String provider = LookupSettings.getReverseLookupProvider(context);

    if (INSTANCE == null || !isInstance(provider)) {
      Log.d(TAG, "Chosen reverse lookup provider: " + provider);

      if (provider.equals(LookupSettings.RLP_OPENCNAM)) {
        INSTANCE = new OpenCnamReverseLookup(context);
      } else if (provider.equals(LookupSettings.RLP_YELLOWPAGES)
          || provider.equals(LookupSettings.RLP_YELLOWPAGES_CA)) {
        INSTANCE = new YellowPagesReverseLookup(context, provider);
      } else if (provider.equals(LookupSettings.RLP_ZABASEARCH)) {
        INSTANCE = new ZabaSearchReverseLookup(context);
      } else if (provider.equals(LookupSettings.RLP_DASTELEFONBUCH)) {
        INSTANCE = new TelefonbuchReverseLookup(context);
      } else if (provider.equals(LookupSettings.RLP_AUSKUNFT)) {
        INSTANCE = new AuskunftReverseLookup(context);
      }
    }

    return INSTANCE;
  }

  private static boolean isInstance(String provider) {
    if (provider.equals(LookupSettings.RLP_OPENCNAM)
        && INSTANCE instanceof OpenCnamReverseLookup) {
      return true;
    } else if ((provider.equals(LookupSettings.RLP_YELLOWPAGES)
        || provider.equals(LookupSettings.RLP_YELLOWPAGES_CA))
        && INSTANCE instanceof YellowPagesReverseLookup) {
      return true;
    } else if (provider.equals(LookupSettings.RLP_ZABASEARCH)
        && INSTANCE instanceof ZabaSearchReverseLookup) {
      return true;
    } else if (provider.equals(LookupSettings.RLP_DASTELEFONBUCH)
        && INSTANCE instanceof TelefonbuchReverseLookup) {
      return true;
    } else if (provider.equals(LookupSettings.RLP_AUSKUNFT)
        && INSTANCE instanceof AuskunftReverseLookup) {
      return true;
    } else {
      return false;
    }
  }

  /**
   * Lookup image
   *
   * @param context The application context
   * @param uri The image URI
   */
  public Bitmap lookupImage(Context context, Uri uri) {
    return null;
  }

  /**
   * Perform phone number lookup.
   *
   * @param context The application context
   * @param normalizedNumber The normalized phone number
   * @param formattedNumber The formatted phone number
   * @return The phone number info object
   */
  public abstract ContactInfo lookupNumber(Context context,
      String normalizedNumber, String formattedNumber) throws IOException;
}