/*
 * Copyright (C) 2012 The Android Open Source 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.example.mapdemo;

import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.InfoWindowAdapter;
import com.google.android.gms.maps.GoogleMap.OnInfoWindowClickListener;
import com.google.android.gms.maps.GoogleMap.OnMarkerClickListener;
import com.google.android.gms.maps.GoogleMap.OnMarkerDragListener;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.LatLngBounds;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;

import android.annotation.SuppressLint;
import android.graphics.Color;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.SystemClock;
import android.support.v4.app.FragmentActivity;
import android.text.SpannableString;
import android.text.style.ForegroundColorSpan;
import android.view.View;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.view.animation.BounceInterpolator;
import android.view.animation.Interpolator;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.RadioGroup;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

/**
 * This shows how to place markers on a map.
 */
public class MarkerDemoActivity extends FragmentActivity
        implements
        OnMarkerClickListener,
        OnInfoWindowClickListener,
        OnMarkerDragListener,
        OnSeekBarChangeListener {
    private static final LatLng BRISBANE = new LatLng(-27.47093, 153.0235);
    private static final LatLng MELBOURNE = new LatLng(-37.81319, 144.96298);
    private static final LatLng SYDNEY = new LatLng(-33.87365, 151.20689);
    private static final LatLng ADELAIDE = new LatLng(-34.92873, 138.59995);
    private static final LatLng PERTH = new LatLng(-31.952854, 115.857342);

    /** Demonstrates customizing the info window and/or its contents. */
    class CustomInfoWindowAdapter implements InfoWindowAdapter {
        private final RadioGroup mOptions;

        // These a both viewgroups containing an ImageView with id "badge" and two TextViews with id
        // "title" and "snippet".
        private final View mWindow;
        private final View mContents;

        CustomInfoWindowAdapter() {
            mWindow = getLayoutInflater().inflate(R.layout.custom_info_window, null);
            mContents = getLayoutInflater().inflate(R.layout.custom_info_contents, null);
            mOptions = (RadioGroup) findViewById(R.id.custom_info_window_options);
        }

        @Override
        public View getInfoWindow(Marker marker) {
            if (mOptions.getCheckedRadioButtonId() != R.id.custom_info_window) {
                // This means that getInfoContents will be called.
                return null;
            }
            render(marker, mWindow);
            return mWindow;
        }

        @Override
        public View getInfoContents(Marker marker) {
            if (mOptions.getCheckedRadioButtonId() != R.id.custom_info_contents) {
                // This means that the default info contents will be used.
                return null;
            }
            render(marker, mContents);
            return mContents;
        }

        private void render(Marker marker, View view) {
            int badge;
            // Use the equals() method on a Marker to check for equals.  Do not use ==.
            if (marker.equals(mBrisbane)) {
                badge = R.drawable.badge_qld;
            } else if (marker.equals(mAdelaide)) {
                badge = R.drawable.badge_sa;
            } else if (marker.equals(mSydney)) {
                badge = R.drawable.badge_nsw;
            } else if (marker.equals(mMelbourne)) {
                badge = R.drawable.badge_victoria;
            } else if (marker.equals(mPerth)) {
                badge = R.drawable.badge_wa;
            } else {
                // Passing 0 to setImageResource will clear the image view.
                badge = 0;
            }
            ((ImageView) view.findViewById(R.id.badge)).setImageResource(badge);

            String title = marker.getTitle();
            TextView titleUi = ((TextView) view.findViewById(R.id.title));
            if (title != null) {
                // Spannable string allows us to edit the formatting of the text.
                SpannableString titleText = new SpannableString(title);
                titleText.setSpan(new ForegroundColorSpan(Color.RED), 0, titleText.length(), 0);
                titleUi.setText(titleText);
            } else {
                titleUi.setText("");
            }

            String snippet = marker.getSnippet();
            TextView snippetUi = ((TextView) view.findViewById(R.id.snippet));
            if (snippet != null && snippet.length() > 12) {
                SpannableString snippetText = new SpannableString(snippet);
                snippetText.setSpan(new ForegroundColorSpan(Color.MAGENTA), 0, 10, 0);
                snippetText.setSpan(new ForegroundColorSpan(Color.BLUE), 12, snippet.length(), 0);
                snippetUi.setText(snippetText);
            } else {
                snippetUi.setText("");
            }
        }
    }

    private GoogleMap mMap;

    private Marker mPerth;
    private Marker mSydney;
    private Marker mBrisbane;
    private Marker mAdelaide;
    private Marker mMelbourne;

    private final List<Marker> mMarkerRainbow = new ArrayList<Marker>();

    private TextView mTopText;
    private SeekBar mRotationBar;
    private CheckBox mFlatBox;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.marker_demo);

        mTopText = (TextView) findViewById(R.id.top_text);

        mRotationBar = (SeekBar) findViewById(R.id.rotationSeekBar);
        mRotationBar.setMax(360);
        mRotationBar.setOnSeekBarChangeListener(this);

        mFlatBox = (CheckBox) findViewById(R.id.flat);

        setUpMapIfNeeded();
    }

    @Override
    protected void onResume() {
        super.onResume();
        setUpMapIfNeeded();
    }

    private void setUpMapIfNeeded() {
        // Do a null check to confirm that we have not already instantiated the map.
        if (mMap == null) {
            // Try to obtain the map from the SupportMapFragment.
            mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
                    .getMap();
            // Check if we were successful in obtaining the map.
            if (mMap != null) {
                setUpMap();
            }
        }
    }

    private void setUpMap() {
        // Hide the zoom controls as the button panel will cover it.
        mMap.getUiSettings().setZoomControlsEnabled(false);

        // Add lots of markers to the map.
        addMarkersToMap();

        // Setting an info window adapter allows us to change the both the contents and look of the
        // info window.
        mMap.setInfoWindowAdapter(new CustomInfoWindowAdapter());

        // Set listeners for marker events.  See the bottom of this class for their behavior.
        mMap.setOnMarkerClickListener(this);
        mMap.setOnInfoWindowClickListener(this);
        mMap.setOnMarkerDragListener(this);

        // Pan to see all markers in view.
        // Cannot zoom to bounds until the map has a size.
        final View mapView = getSupportFragmentManager().findFragmentById(R.id.map).getView();
        if (mapView.getViewTreeObserver().isAlive()) {
            mapView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
                @SuppressWarnings("deprecation") // We use the new method when supported
                @SuppressLint("NewApi") // We check which build version we are using.
                @Override
                public void onGlobalLayout() {
                    LatLngBounds bounds = new LatLngBounds.Builder()
                            .include(PERTH)
                            .include(SYDNEY)
                            .include(ADELAIDE)
                            .include(BRISBANE)
                            .include(MELBOURNE)
                            .build();
                    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
                      mapView.getViewTreeObserver().removeGlobalOnLayoutListener(this);
                    } else {
                      mapView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
                    }
                    mMap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds, 50));
                }
            });
        }
    }

    private void addMarkersToMap() {
        // Uses a colored icon.
        mBrisbane = mMap.addMarker(new MarkerOptions()
                .position(BRISBANE)
                .title("Brisbane")
                .snippet("Population: 2,074,200")
                .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE)));

        // Uses a custom icon with the info window popping out of the center of the icon.
        mSydney = mMap.addMarker(new MarkerOptions()
                .position(SYDNEY)
                .title("Sydney")
                .snippet("Population: 4,627,300")
                .icon(BitmapDescriptorFactory.fromResource(R.drawable.arrow))
                .infoWindowAnchor(0.5f, 0.5f));

        // Creates a draggable marker. Long press to drag.
        mMelbourne = mMap.addMarker(new MarkerOptions()
                .position(MELBOURNE)
                .title("Melbourne")
                .snippet("Population: 4,137,400")
                .draggable(true));

        // A few more markers for good measure.
        mPerth = mMap.addMarker(new MarkerOptions()
                .position(PERTH)
                .title("Perth")
                .snippet("Population: 1,738,800"));
        mAdelaide = mMap.addMarker(new MarkerOptions()
                .position(ADELAIDE)
                .title("Adelaide")
                .snippet("Population: 1,213,000"));

        // Creates a marker rainbow demonstrating how to create default marker icons of different
        // hues (colors).
        float rotation = mRotationBar.getProgress();
        boolean flat = mFlatBox.isChecked();

        int numMarkersInRainbow = 12;
        for (int i = 0; i < numMarkersInRainbow; i++) {
            mMarkerRainbow.add(mMap.addMarker(new MarkerOptions()
                    .position(new LatLng(
                            -30 + 10 * Math.sin(i * Math.PI / (numMarkersInRainbow - 1)),
                            135 - 10 * Math.cos(i * Math.PI / (numMarkersInRainbow - 1))))
                    .title("Marker " + i)
                    .icon(BitmapDescriptorFactory.defaultMarker(i * 360 / numMarkersInRainbow))
                    .flat(flat)
                    .rotation(rotation)));
        }
    }

    private boolean checkReady() {
        if (mMap == null) {
            Toast.makeText(this, R.string.map_not_ready, Toast.LENGTH_SHORT).show();
            return false;
        }
        return true;
    }

    /** Called when the Clear button is clicked. */
    public void onClearMap(View view) {
        if (!checkReady()) {
            return;
        }
        mMap.clear();
    }

    /** Called when the Reset button is clicked. */
    public void onResetMap(View view) {
        if (!checkReady()) {
            return;
        }
        // Clear the map because we don't want duplicates of the markers.
        mMap.clear();
        addMarkersToMap();
    }

    /** Called when the Reset button is clicked. */
    public void onToggleFlat(View view) {
        if (!checkReady()) {
            return;
        }
        boolean flat = mFlatBox.isChecked();
        for (Marker marker : mMarkerRainbow) {
            marker.setFlat(flat);
        }
    }

    @Override
    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
        if (!checkReady()) {
            return;
        }
        float rotation = seekBar.getProgress();
        for (Marker marker : mMarkerRainbow) {
            marker.setRotation(rotation);
        }
    }

    @Override
    public void onStartTrackingTouch(SeekBar seekBar) {
        // Do nothing.
    }

    @Override
    public void onStopTrackingTouch(SeekBar seekBar) {
        // Do nothing.
    }

    //
    // Marker related listeners.
    //

    @Override
    public boolean onMarkerClick(final Marker marker) {
        if (marker.equals(mPerth)) {
            // This causes the marker at Perth to bounce into position when it is clicked.
            final Handler handler = new Handler();
            final long start = SystemClock.uptimeMillis();
            final long duration = 1500;

            final Interpolator interpolator = new BounceInterpolator();

            handler.post(new Runnable() {
                @Override
                public void run() {
                    long elapsed = SystemClock.uptimeMillis() - start;
                    float t = Math.max(1 - interpolator
                            .getInterpolation((float) elapsed / duration), 0);
                    marker.setAnchor(0.5f, 1.0f + 2 * t);

                    if (t > 0.0) {
                        // Post again 16ms later.
                        handler.postDelayed(this, 16);
                    }
                }
            });
        } else if (marker.equals(mAdelaide)) {
            // This causes the marker at Adelaide to change color.
            marker.setIcon(BitmapDescriptorFactory.defaultMarker(new Random().nextFloat() * 360));
        }
        // We return false to indicate that we have not consumed the event and that we wish
        // for the default behavior to occur (which is for the camera to move such that the
        // marker is centered and for the marker's info window to open, if it has one).
        return false;
    }

    @Override
    public void onInfoWindowClick(Marker marker) {
        Toast.makeText(getBaseContext(), "Click Info Window", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onMarkerDragStart(Marker marker) {
        mTopText.setText("onMarkerDragStart");
    }

    @Override
    public void onMarkerDragEnd(Marker marker) {
        mTopText.setText("onMarkerDragEnd");
    }

    @Override
    public void onMarkerDrag(Marker marker) {
        mTopText.setText("onMarkerDrag.  Current Position: " + marker.getPosition());
    }
}
