/*
 * Copyright (C)  2016 The CyanogenMod Project
 *
 * 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.phone.common.incall;

import android.content.ComponentName;
import android.content.Context;
import android.util.Log;

import com.android.phone.common.ambient.SingletonHolder;
import com.android.phone.common.ambient.TypedPendingResult;
import com.android.phone.common.incall.api.InCallListeners;
import com.android.phone.common.incall.api.InCallQueries;
import com.android.phone.common.incall.api.InCallResults;
import com.android.phone.common.nudge.api.NudgeQueries;
import com.cyanogen.ambient.common.api.PendingResult;
import com.cyanogen.ambient.common.api.Result;
import com.cyanogen.ambient.common.api.ResultCallback;
import com.cyanogen.ambient.discovery.util.NudgeKey;
import com.cyanogen.ambient.incall.extension.InCallContactInfo;
import com.cyanogen.ambient.incall.results.PendingIntentResult;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Set;

public class ContactsDataSubscription extends DialerDataSubscription {

    public ContactsDataSubscription(Context context) {
        super(context);
    }

    private static final SingletonHolder<ContactsDataSubscription, Context> sInstance =
            new SingletonHolder<ContactsDataSubscription, Context>() {

                @Override
                protected ContactsDataSubscription create(Context context) {
                    // Let's get started here.
                    return new ContactsDataSubscription(context);
                }
            };


    public static ContactsDataSubscription get(Context context) {
        return sInstance.get(context);
    }

    public static boolean isCreated() {
        return sInstance.isCreated();
    }

    public static void init(Context context) {
        ContactsDataSubscription.get(context).refresh();
    }

    @Override
    public void onDynamicRefreshRequested(ArrayList<TypedPendingResult> queries,
            ComponentName componentName) {
        queries.add(InCallQueries.getCallMethodAuthenticated(mClient, componentName));
        queries.add(InCallQueries.getCallMethodAccountHandle(mClient, componentName));
    }

    @Override
    protected void enableListeners(CallMethodInfo mod) {
        InCallListeners.enableAuthListener(this, mod);
    }

    @Override
    protected void disableListeners(CallMethodInfo mod) {
        InCallListeners.disableAuthListener(this, mod);
    }

    @Override
    protected void requestedModInfo(ArrayList<TypedPendingResult> queries,
            ComponentName componentName) {

        queries.add(InCallQueries.getCallMethodInfo(mClient, componentName));
        queries.add(InCallQueries.getCallMethodStatus(mClient, componentName));
        queries.add(InCallQueries.getCallMethodMimeType(mClient, componentName));
        queries.add(InCallQueries.getCallMethodVideoCallableMimeType(mClient, componentName));
        queries.add(InCallQueries.getCallMethodAuthenticated(mClient, componentName));
        queries.add(InCallQueries.getLoginIntent(mClient, componentName));
        queries.add(InCallQueries.getDefaultDirectorySearchIntent(mClient, componentName));
        queries.add(InCallQueries.getCallMethodImMimeType(mClient, componentName));

        TypedPendingResult fragLogin = NudgeQueries.getNudgeConfig(mClient, mContext, componentName,
                NudgeKey.INCALL_CONTACT_FRAGMENT_LOGIN);
        if (fragLogin != null) {
            queries.add(fragLogin);
        }
        TypedPendingResult cardLogin = NudgeQueries.getNudgeConfig(mClient, mContext, componentName,
                NudgeKey.INCALL_CONTACT_CARD_LOGIN);
        if (cardLogin != null) {
            queries.add(cardLogin);
        }
        TypedPendingResult cardDownload = NudgeQueries.getNudgeConfig(mClient, mContext,
                componentName, NudgeKey.INCALL_CONTACT_CARD_DOWNLOAD);
        if (cardDownload != null) {
            queries.add(cardDownload);
        }
    }

    public Set<String> getAllPluginComponentNames() {
        Set<String> names = new HashSet<String>();
        HashMap<ComponentName, CallMethodInfo> plugins = this.getPluginInfo();
        for (ComponentName cn : plugins.keySet()) {
            names.add(cn.flattenToString());
        }
        return names;
    }

    public void updatePendingIntents(final HashMap<ComponentName, ContactsPendingIntents> map,
                                     InCallContactInfo contactInfo) {
        HashMap<ComponentName, CallMethodInfo> plugins = this.getPluginInfo();
        for (ComponentName cn : plugins.keySet()) {
            ArrayList<TypedPendingResult> queries = new ArrayList<>();
            queries.add(InCallQueries.getDirectorySearchIntent(mClient, cn, contactInfo));
            queries.add(InCallQueries.getInviteIntent(mClient, cn, contactInfo));
            executeAllPendingIntentQueries(queries, cn, map);
        }
    }

    private void executeAllPendingIntentQueries(final ArrayList<TypedPendingResult> apiCallbacks,
            final ComponentName componentName,
            final HashMap<ComponentName, ContactsPendingIntents> map) {
        final ArrayList<PendingResult> pendingResults = new ArrayList<>();

        for (final TypedPendingResult pendingResult : apiCallbacks) {
            pendingResult.setResultCallback(new ResultCallback() {
                @Override
                public void onResult(Result result) {
                    pendingResults.remove(pendingResult.getPendingResult());
                    if (result == null) {
                        // Our plugin failed to make this call, log out what and why
                        Log.e(TAG, "Result from: " + componentName.getPackageName() + " failed");
                    } else {
                        if (result.getStatus().isSuccess()) {
                            // check to see if our onPostResult removed the plugin.
                            if (!getPluginInfo().containsKey(componentName)) {
                                // Our plugin no longer exists, clear other callbacks
                                for (PendingResult pr : pendingResults) {
                                    pr.cancel();
                                }
                                pendingResults.clear();
                            } else {
                                ContactsPendingIntents intentInfo = map.get(componentName);
                                if (intentInfo == null) {
                                    intentInfo = new ContactsPendingIntents();
                                    map.put(componentName, intentInfo);
                                }
                                InCallResults.gotContactsIntent(intentInfo,
                                        (PendingIntentResult) result,
                                        pendingResult
                                        .getType());
                            }
                        } else if (result.getStatus().isCanceled()) {
                            // Our plugin was found invalid or no longer exists.
                            Log.e(TAG, "Queries to: " + componentName.getPackageName()
                                    + " are cancelled");
                        } else {
                            Log.e(TAG, "Query to: " + componentName.getPackageName() + " "
                                    + result.getClass().getSimpleName() + " failed. Code: " +
                                    result.getStatus().getStatusMessage());
                        }
                    }
                }
            });

            // Add items that we've already added to our queue for so we can cancel them if
            // need be. Set resultcallback will return instantly but onResult will not.
            // So we can use this as our "counter" to determine if we should broadcast
            pendingResults.add(pendingResult.getPendingResult());
        }
    }
}