/**
 * Copyright (c) 2016 CA, Inc. All rights reserved.
 * This software may be modified and distributed under the terms
 * of the MIT license. See the LICENSE file for details.
 */

package com.ca.mas.cordova.core;

import android.util.Log;

import com.ca.mas.foundation.auth.MASApplication;
import com.ca.mas.foundation.auth.MASAuthenticationProvider;
import com.ca.mas.foundation.auth.MASAuthenticationProviders;
import com.ca.mas.foundation.auth.MASProximityLogin;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.locks.ReentrantReadWriteLock;

/**
 * Utilities class
 */
public class MASUtil {
    private static final String TAG = MASUtil.class.getCanonicalName();
    private static MASProximityLogin qrCode;
    private static Map<String, MASAuthenticationProvider> _providerMap = new HashMap<String, MASAuthenticationProvider>();
    private static final ReentrantReadWriteLock _lock = new ReentrantReadWriteLock();

    /**
     * @return the already set MASProximityLoginQRCode qrCode
     */
    public static MASProximityLogin getQrCode() {
        return qrCode;
    }

    /**
     * @param qrCode MASProximityLoginQRCode that is set
     */
    public static void setQrCode(MASProximityLogin qrCode) {
        MASUtil.qrCode = qrCode;
    }

    /**
     * Convert list of MASApplications into json format.
     *
     * @param masApplications list of {@link MASApplication}
     * @return jsonArray
     */
    public static JSONArray convertMASApplicationListToJson(List<MASApplication> masApplications) {
        JSONArray result = new JSONArray();
        try {
            for (int i = 0; i < masApplications.size(); i++) {
                MASApplication app = masApplications.get(i);
                JSONObject appInfo = new JSONObject();
                appInfo.put("authUrl", app.getAuthUrl());
                appInfo.put("appName", app.getName());
                appInfo.put("nativeUrl", app.getNativeUri());
                appInfo.put("identifier", app.getIdentifier());
                appInfo.put("iconUrl", app.getIconUrl());
                result.put(appInfo);
            }

        } catch (JSONException e) {
            Log.e(TAG, e.getMessage(), e);
        }
        return result;
    }

    /**
     * Sets the list of MASAuthentication Providers in cache and returns an Array of Providers supported by server
     *
     * @param providers list of {@link MASAuthenticationProviders}
     * @return _ids Array of providers supported at server
     */
    public static JSONArray setAuthenticationProviders(MASAuthenticationProviders providers) {
        JSONArray array = new JSONArray();
        _providerMap.clear();
        List<MASAuthenticationProvider> masProviders = providers.getProviders();
        String idp = providers.getIdp();
        try {
            _lock.writeLock().lock();
            for (MASAuthenticationProvider p : masProviders) {
                String identifier = p.getIdentifier();
                if (identifier.equalsIgnoreCase("qrcode")) {
                    continue;
                }
                if ((idp.equalsIgnoreCase("all") || idp.equalsIgnoreCase(identifier)) && !p.isProximityLogin()) {
                    array.put(identifier);
                    _providerMap.put(identifier, p);

                }
            }
        } finally {
            _lock.writeLock().unlock();
        }
        return array;
    }

    /**
     * Returns the MASAuthenticationProvider cached for a particular identifier chosen by user
     *
     * @param identifier String
     * @return MASAuthenticationProvider
     */
    public static MASAuthenticationProvider getProvider(String identifier) {
        try {
            _lock.readLock().lock();
            return _providerMap.get(identifier);
        } finally {
            _lock.readLock().unlock();
        }
    }
}