// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: MIT-0

package aws.location.demo.tangram

import android.os.Bundle
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity
import aws.location.demo.okhttp.SigV4Interceptor
import com.amazonaws.auth.CognitoCachingCredentialsProvider
import com.amazonaws.regions.Regions
import com.mapzen.tangram.*
import com.mapzen.tangram.networking.DefaultHttpHandler
import com.mapzen.tangram.networking.HttpHandler

private const val SERVICE_NAME = "geo"

class MainActivity : AppCompatActivity(), MapView.MapReadyCallback {
    private var mapView: MapView? = null

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

        setContentView(R.layout.activity_main)

        mapView = findViewById(R.id.map)

        mapView?.getMapAsync(this, getHttpHandler())
        findViewById<TextView>(R.id.attributionView).text = getString(R.string.attribution)
    }

    override fun onMapReady(mapController: MapController?) {
        val sceneUpdates = arrayListOf(
            SceneUpdate(
                "sources.mapzen.url",
                "https://maps.geo.${getString(R.string.awsRegion)}.amazonaws.com/maps/v0/maps/${
                    getString(
                        R.string.mapName
                    )
                }/tiles/{z}/{x}/{y}"
            )
        )

        mapController?.let { map ->
            map.updateCameraPosition(
                CameraUpdateFactory.newLngLatZoom(
                    LngLat(-123.1187, 49.2819),
                    12F
                )
            )
            map.loadSceneFileAsync(
                getString(R.string.sceneUrl),
                sceneUpdates
            )
        }
    }

    private fun getHttpHandler(): HttpHandler {
        val builder = DefaultHttpHandler.getClientBuilder()

        val identityPoolId = getString(R.string.identityPoolId)
        val credentialsProvider = CognitoCachingCredentialsProvider(
            applicationContext,
            identityPoolId,
            Regions.fromName(identityPoolId.split(":").first())
        )

        return DefaultHttpHandler(
            builder.addInterceptor(
                SigV4Interceptor(
                    credentialsProvider,
                    SERVICE_NAME
                )
            )
        )
    }

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

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

    override fun onLowMemory() {
        super.onLowMemory()
        mapView?.onLowMemory()
    }

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