/*
 * Copyright (C) 2016 Google Inc. All Rights Reserved.
 *
 * 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.example.android.wearable.wear.wearverifyremoteapp;

import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.ResultReceiver;
import android.support.wearable.phone.PhoneDeviceType;
import android.support.wearable.view.ConfirmationOverlay;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import androidx.fragment.app.FragmentActivity;
import androidx.wear.ambient.AmbientModeSupport;

import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.android.gms.wearable.CapabilityClient;
import com.google.android.gms.wearable.CapabilityInfo;
import com.google.android.gms.wearable.Node;
import com.google.android.gms.wearable.Wearable;
import com.google.android.wearable.intent.RemoteIntent;

import java.util.Set;

/**
 * Checks if the phone app is installed on remote device. If it is not, allows user to open app
 * listing on the phone's Play or App Store.
 */
public class MainWearActivity extends FragmentActivity implements
        AmbientModeSupport.AmbientCallbackProvider,
        CapabilityClient.OnCapabilityChangedListener {

    private static final String TAG = "MainWearActivity";

    private static final String WELCOME_MESSAGE = "Welcome to our Wear app!\n\n";

    private static final String CHECKING_MESSAGE =
            WELCOME_MESSAGE + "Checking for Mobile app...\n";

    private static final String MISSING_MESSAGE =
            WELCOME_MESSAGE
                    + "You are missing the required phone app, please click on the button below to "
                    + "install it on your phone.\n";

    private static final String INSTALLED_MESSAGE =
            WELCOME_MESSAGE
                    + "Mobile app installed on your %s!\n\nYou can now use MessageApi, "
                    + "DataApi, etc.";

    // Name of capability listed in Phone app's wear.xml.
    // IMPORTANT NOTE: This should be named differently than your Wear app's capability.
    private static final String CAPABILITY_PHONE_APP = "verify_remote_example_phone_app";

    // Links to install mobile app for both Android (Play Store) and iOS.
    // TODO: Replace with your links/packages.
    private static final String ANDROID_MARKET_APP_URI =
            "market://details?id=com.example.android.wearable.wear.wearverifyremoteapp";

    // TODO: Replace with your links/packages.
    private static final String APP_STORE_APP_URI =
            "https://itunes.apple.com/us/app/android-wear/id986496028?mt=8";

    // Result from sending RemoteIntent to phone to open app in play/app store.
    private final ResultReceiver mResultReceiver = new ResultReceiver(new Handler()) {
        @Override
        protected void onReceiveResult(int resultCode, Bundle resultData) {

            if (resultCode == RemoteIntent.RESULT_OK) {
                new ConfirmationOverlay().showOn(MainWearActivity.this);

            } else if (resultCode == RemoteIntent.RESULT_FAILED) {
                new ConfirmationOverlay()
                        .setType(ConfirmationOverlay.FAILURE_ANIMATION)
                        .showOn(MainWearActivity.this);

            } else {
                throw new IllegalStateException("Unexpected result " + resultCode);
            }
        }
    };

    private TextView mInformationTextView;
    private Button mRemoteOpenButton;

    private Node mAndroidPhoneNodeWithApp;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        Log.d(TAG, "onCreate()");
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        // Enables Ambient mode.
        AmbientModeSupport.attach(this);

        mInformationTextView = findViewById(R.id.information_text_view);
        mRemoteOpenButton = findViewById(R.id.remote_open_button);

        mInformationTextView.setText(CHECKING_MESSAGE);

        mRemoteOpenButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                openAppInStoreOnPhone();
            }
        });
    }


    @Override
    protected void onPause() {
        Log.d(TAG, "onPause()");
        super.onPause();

        Wearable.getCapabilityClient(this).removeListener(this, CAPABILITY_PHONE_APP);
    }

    @Override
    protected void onResume() {
        Log.d(TAG, "onResume()");
        super.onResume();

        Wearable.getCapabilityClient(this).addListener(this, CAPABILITY_PHONE_APP);

        checkIfPhoneHasApp();
    }

    /*
     * Updates UI when capabilities change (install/uninstall phone app).
     */
    public void onCapabilityChanged(CapabilityInfo capabilityInfo) {
        Log.d(TAG, "onCapabilityChanged(): " + capabilityInfo);

        mAndroidPhoneNodeWithApp = pickBestNodeId(capabilityInfo.getNodes());
        verifyNodeAndUpdateUI();
    }

    private void checkIfPhoneHasApp() {
        Log.d(TAG, "checkIfPhoneHasApp()");

        Task<CapabilityInfo> capabilityInfoTask = Wearable.getCapabilityClient(this)
                .getCapability(CAPABILITY_PHONE_APP, CapabilityClient.FILTER_ALL);

        capabilityInfoTask.addOnCompleteListener(new OnCompleteListener<CapabilityInfo>() {
            @Override
            public void onComplete(Task<CapabilityInfo> task) {

                if (task.isSuccessful()) {
                    Log.d(TAG, "Capability request succeeded.");
                    CapabilityInfo capabilityInfo = task.getResult();
                    mAndroidPhoneNodeWithApp = pickBestNodeId(capabilityInfo.getNodes());

                } else {
                    Log.d(TAG, "Capability request failed to return any results.");
                }

                verifyNodeAndUpdateUI();
            }
        });
    }

    private void verifyNodeAndUpdateUI() {

        if (mAndroidPhoneNodeWithApp != null) {

            // TODO: Add your code to communicate with the phone app via
            // Wear APIs (MessageApi, DataApi, etc.)

            String installMessage =
                    String.format(INSTALLED_MESSAGE, mAndroidPhoneNodeWithApp.getDisplayName());
            Log.d(TAG, installMessage);
            mInformationTextView.setText(installMessage);
            mRemoteOpenButton.setVisibility(View.INVISIBLE);

        } else {
            Log.d(TAG, MISSING_MESSAGE);
            mInformationTextView.setText(MISSING_MESSAGE);
            mRemoteOpenButton.setVisibility(View.VISIBLE);
        }
    }

    private void openAppInStoreOnPhone() {
        Log.d(TAG, "openAppInStoreOnPhone()");

        int phoneDeviceType = PhoneDeviceType.getPhoneDeviceType(getApplicationContext());
        switch (phoneDeviceType) {
            // Paired to Android phone, use Play Store URI.
            case PhoneDeviceType.DEVICE_TYPE_ANDROID:
                Log.d(TAG, "\tDEVICE_TYPE_ANDROID");
                // Create Remote Intent to open Play Store listing of app on remote device.
                Intent intentAndroid =
                        new Intent(Intent.ACTION_VIEW)
                                .addCategory(Intent.CATEGORY_BROWSABLE)
                                .setData(Uri.parse(ANDROID_MARKET_APP_URI));

                RemoteIntent.startRemoteActivity(
                        getApplicationContext(),
                        intentAndroid,
                        mResultReceiver);
                break;

            // Paired to iPhone, use iTunes App Store URI
            case PhoneDeviceType.DEVICE_TYPE_IOS:
                Log.d(TAG, "\tDEVICE_TYPE_IOS");

                // Create Remote Intent to open App Store listing of app on iPhone.
                Intent intentIOS =
                        new Intent(Intent.ACTION_VIEW)
                                .addCategory(Intent.CATEGORY_BROWSABLE)
                                .setData(Uri.parse(APP_STORE_APP_URI));

                RemoteIntent.startRemoteActivity(
                        getApplicationContext(),
                        intentIOS,
                        mResultReceiver);
                break;

            case PhoneDeviceType.DEVICE_TYPE_ERROR_UNKNOWN:
                Log.d(TAG, "\tDEVICE_TYPE_ERROR_UNKNOWN");
                break;
        }
    }

    /*
     * There should only ever be one phone in a node set (much less w/ the correct capability), so
     * I am just grabbing the first one (which should be the only one).
     */
    private Node pickBestNodeId(Set<Node> nodes) {
        Log.d(TAG, "pickBestNodeId(): " + nodes);

        Node bestNodeId = null;
        // Find a nearby node/phone or pick one arbitrarily. Realistically, there is only one phone.
        for (Node node : nodes) {
            bestNodeId = node;
        }
        return bestNodeId;
    }

    @Override
    public AmbientModeSupport.AmbientCallback getAmbientCallback() {
        return new MyAmbientCallback();
    }

    private class MyAmbientCallback extends AmbientModeSupport.AmbientCallback {
        /** Prepares the UI for ambient mode. */
        @Override
        public void onEnterAmbient(Bundle ambientDetails) {
            super.onEnterAmbient(ambientDetails);

            Log.d(TAG, "onEnterAmbient() " + ambientDetails);
            // In our case, the assets are already in black and white, so we don't update UI.
        }

        /** Restores the UI to active (non-ambient) mode. */
        @Override
        public void onExitAmbient() {
            super.onExitAmbient();

            Log.d(TAG, "onExitAmbient()");
            // In our case, the assets are already in black and white, so we don't update UI.
        }
    }
}