Feature layer query

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/*
 * Copyright 2020 Esri
 *
 * 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.esri.arcgisruntime.sample.featurelayerquery

import android.app.SearchManager
import android.content.Context
import android.content.Intent
import android.graphics.Color
import android.os.Bundle
import android.util.Log
import android.view.Menu
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import androidx.appcompat.widget.SearchView
import com.esri.arcgisruntime.ArcGISRuntimeEnvironment
import com.esri.arcgisruntime.concurrent.ListenableFuture
import com.esri.arcgisruntime.data.FeatureQueryResult
import com.esri.arcgisruntime.data.QueryParameters
import com.esri.arcgisruntime.data.ServiceFeatureTable
import com.esri.arcgisruntime.geometry.Point
import com.esri.arcgisruntime.geometry.SpatialReferences
import com.esri.arcgisruntime.layers.FeatureLayer
import com.esri.arcgisruntime.mapping.ArcGISMap
import com.esri.arcgisruntime.mapping.BasemapStyle
import com.esri.arcgisruntime.mapping.Viewpoint
import com.esri.arcgisruntime.mapping.view.MapView
import com.esri.arcgisruntime.symbology.SimpleFillSymbol
import com.esri.arcgisruntime.symbology.SimpleLineSymbol
import com.esri.arcgisruntime.symbology.SimpleRenderer
import com.esri.arcgisruntime.sample.featurelayerquery.databinding.ActivityMainBinding
import java.util.Locale

class MainActivity : AppCompatActivity() {

    private val activityMainBinding by lazy {
        ActivityMainBinding.inflate(layoutInflater)
    }

    private val mapView: MapView by lazy {
        activityMainBinding.mapView
    }

    // create a service feature table and a feature layer from it
    private val serviceFeatureTable: ServiceFeatureTable by lazy {
        ServiceFeatureTable(getString(R.string.us_daytime_population_url))
    }

    // create the feature layer using the service feature table
    private val featureLayer: FeatureLayer by lazy {
        FeatureLayer(serviceFeatureTable)
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(activityMainBinding.root)

        // authentication with an API key or named user is required to access basemaps and other
        // location services
        ArcGISRuntimeEnvironment.setApiKey(BuildConfig.API_KEY)

        // use symbols to show U.S. states with a black outline and yellow fill
        val lineSymbol = SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, Color.BLACK, 1.0f)
        val fillSymbol = SimpleFillSymbol(SimpleFillSymbol.Style.SOLID, Color.YELLOW, lineSymbol)

        featureLayer.apply {
            // set renderer for the feature layer
            renderer = SimpleRenderer(fillSymbol)
            opacity = 0.8f
            maxScale = 10000.0
        }

        // create a map with the topographic basemap and add it to the basemap
        mapView.map = ArcGISMap(BasemapStyle.ARCGIS_TOPOGRAPHIC).apply {
            // add the feature layer to the map's operational layers
            operationalLayers.add(featureLayer)
        }
        // set an initial viewpoint over the USA
        mapView.setViewpoint(
            Viewpoint(
                Point(
                    -11000000.0,
                    5000000.0,
                    SpatialReferences.getWebMercator()
                ), 100000000.0
            )
        )
    }

    /**
     * Handle the search intent from the search widget.
     */
    override fun onNewIntent(intent: Intent) {
        super.onNewIntent(intent)
        this.intent = intent

        if (Intent.ACTION_SEARCH == intent.action) {
            intent.getStringExtra(SearchManager.QUERY)?.let {
                if (it.isNotEmpty()) {
                    searchForState(it)
                }
            }
        }
    }

    /**
     * Search for a U.S. state like @param searchString in the feature table, and if found add it
     * to the featureLayer, zoom to it, and select it.
     */
    private fun searchForState(searchString: String) {
        // clear any previous selections
        featureLayer.clearSelection()
        // create a query for the state that was entered
        val query = QueryParameters()
        // make search case insensitive
        query.whereClause =
            ("upper(STATE_NAME) LIKE '%" + searchString.uppercase(Locale.US) + "%'")
        // call select features
        val future: ListenableFuture<FeatureQueryResult> =
            serviceFeatureTable.queryFeaturesAsync(query)
        // add done loading listener to fire when the selection returns
        future.addDoneListener {
            try {
                // call get on the future to get the result
                val result = future.get()
                // check there are some results
                val resultIterator = result.iterator()
                if (resultIterator.hasNext()) {
                    resultIterator.next().run {
                        // get the extent of the first feature in the result to zoom to
                        val envelope = geometry.extent
                        mapView.setViewpointGeometryAsync(envelope, 10.0)
                        // select the feature
                        featureLayer.selectFeature(this)
                    }
                } else {
                    "No states found with name: $searchString".also {
                        Toast.makeText(this, it, Toast.LENGTH_LONG).show()
                        Log.d(TAG, it)
                    }
                }
            } catch (e: Exception) {
                "Feature search failed for: $searchString. Error: ${e.message}".also {
                    Toast.makeText(this, it, Toast.LENGTH_LONG).show()
                    Log.e(TAG, it)
                }

            }
        }
    }

    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        // inflate the menu; this adds items to the action bar if it is present
        menuInflater.inflate(R.menu.menu_main, menu)
        // get the SearchView and set the searchable configuration
        val searchManager = getSystemService(Context.SEARCH_SERVICE) as SearchManager

        (menu.findItem(R.id.action_search).actionView as? SearchView)?.let {
            // assumes current activity is the searchable activity, as specified in manifest
            it.setSearchableInfo(searchManager.getSearchableInfo(componentName))
            it.setIconifiedByDefault(false)
        }

        return true
    }

    override fun onPause() {
        mapView.pause()
        super.onPause()
    }

    override fun onResume() {
        super.onResume()
        mapView.resume()
    }

    override fun onDestroy() {
        mapView.dispose()
        super.onDestroy()
    }

    companion object {
        private val TAG: String = MainActivity::class.java.simpleName
    }
}