/*
 * Copyright (c) 2018, Daniel Gultsch All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package eu.siacs.conversations.ui.util;

import android.app.Activity;
import android.content.Context;
import android.support.v7.app.AlertDialog;
import android.util.Pair;

import java.util.Collections;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;

import eu.siacs.conversations.R;
import eu.siacs.conversations.entities.Contact;
import eu.siacs.conversations.entities.Conversation;
import eu.siacs.conversations.entities.Presences;
import eu.siacs.conversations.utils.CryptoHelper;
import rocks.xmpp.addr.Jid;

public class PresenceSelector {

	public static void showPresenceSelectionDialog(Activity activity, final Conversation conversation, final OnPresenceSelected listener) {
		final Contact contact = conversation.getContact();
		final Presences presences = contact.getPresences();
		AlertDialog.Builder builder = new AlertDialog.Builder(activity);
		builder.setTitle(activity.getString(R.string.choose_presence));
		final String[] resourceArray = presences.toResourceArray();
		Pair<Map<String, String>, Map<String, String>> typeAndName = presences.toTypeAndNameMap();
		final Map<String, String> resourceTypeMap = typeAndName.first;
		final Map<String, String> resourceNameMap = typeAndName.second;
		final String[] readableIdentities = new String[resourceArray.length];
		final AtomicInteger selectedResource = new AtomicInteger(0);
		for (int i = 0; i < resourceArray.length; ++i) {
			String resource = resourceArray[i];
			if (resource.equals(contact.getLastResource())) {
				selectedResource.set(i);
			}
			String type = resourceTypeMap.get(resource);
			String name = resourceNameMap.get(resource);
			if (type != null) {
				if (Collections.frequency(resourceTypeMap.values(), type) == 1) {
					readableIdentities[i] = translateType(activity, type);
				} else if (name != null) {
					if (Collections.frequency(resourceNameMap.values(), name) == 1
							|| CryptoHelper.UUID_PATTERN.matcher(resource).matches()) {
						readableIdentities[i] = translateType(activity, type) + "  (" + name + ")";
					} else {
						readableIdentities[i] = translateType(activity, type) + " (" + name + " / " + resource + ")";
					}
				} else {
					readableIdentities[i] = translateType(activity, type) + " (" + resource + ")";
				}
			} else {
				readableIdentities[i] = resource;
			}
		}
		builder.setSingleChoiceItems(readableIdentities,
				selectedResource.get(),
				(dialog, which) -> selectedResource.set(which));
		builder.setNegativeButton(R.string.cancel, null);
		builder.setPositiveButton(R.string.ok, (dialog, which) -> {
			try {
				Jid next = Jid.of(contact.getJid().getLocal(), contact.getJid().getDomain(), resourceArray[selectedResource.get()]);
				conversation.setNextCounterpart(next);
			} catch (IllegalArgumentException e) {
				conversation.setNextCounterpart(null);
			}
			listener.onPresenceSelected();
		});
		builder.create().show();
	}

	public static void warnMutualPresenceSubscription(Activity activity, final Conversation conversation, final OnPresenceSelected listener) {
		AlertDialog.Builder builder = new AlertDialog.Builder(activity);
		builder.setTitle(conversation.getContact().getJid().toString());
		builder.setMessage(R.string.without_mutual_presence_updates);
		builder.setNegativeButton(R.string.cancel, null);
		builder.setPositiveButton(R.string.ignore, (dialog, which) -> {
			conversation.setNextCounterpart(null);
			if (listener != null) {
				listener.onPresenceSelected();
			}
		});
		builder.create().show();
	}

	private static String translateType(Context context, String type) {
		switch (type.toLowerCase()) {
			case "pc":
				return context.getString(R.string.type_pc);
			case "phone":
				return context.getString(R.string.type_phone);
			case "tablet":
				return context.getString(R.string.type_tablet);
			case "web":
				return context.getString(R.string.type_web);
			case "console":
				return context.getString(R.string.type_console);
			default:
				return type;
		}
	}

	public interface OnPresenceSelected {
		void onPresenceSelected();
	}
}
