/*

• The snippet below shows code for the activity file. To view the complete code sample,

• visit https://github.com/googlemaps/android-places-compose/tree/main.

*/

// Copyright 2024 Google LLC

//

// 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.google.android.libraries.places.compose.demo.presentation.landmark

import android.os.Bundle

import androidx.activity.ComponentActivity

import androidx.activity.compose.setContent

import androidx.activity.enableEdgeToEdge

import androidx.activity.viewModels

import androidx.compose.foundation.layout.fillMaxSize

import androidx.compose.foundation.layout.padding

import androidx.compose.material3.SnackbarDuration

import androidx.compose.material3.SnackbarHostState

import androidx.compose.runtime.LaunchedEffect

import androidx.compose.runtime.getValue

import androidx.compose.runtime.remember

import androidx.compose.ui.Modifier

import androidx.lifecycle.compose.collectAsStateWithLifecycle

import com.google.android.libraries.places.compose.demo.R

import com.google.android.libraries.places.compose.demo.presentation.ViewModelEvent

import com.google.android.libraries.places.compose.demo.presentation.common.CommonEvent

import com.google.android.libraries.places.compose.demo.presentation.common.CommonScreen

import com.google.android.libraries.places.compose.demo.presentation.common.CommonViewModel

import com.google.maps.android.compose.rememberMarkerState

import dagger.hilt.android.AndroidEntryPoint

/**

• The activity for selecting a landmark.

• This activity uses the [LandmarkSelectionViewModel] to manage the selection process.

*/

@AndroidEntryPoint

class LandmarkSelectionActivity : ComponentActivity() {

override fun onCreate(savedInstanceState: Bundle?) {

super.onCreate(savedInstanceState)

enableEdgeToEdge()

val commonViewModel: CommonViewModel by viewModels()

val landmarkSelectionViewModel: LandmarkSelectionViewModel by viewModels()

// Force the map to be shown initially.

commonViewModel.onEvent(CommonEvent.OnToggleMap)

setContent {

val snackbarHostState = remember { SnackbarHostState() }

LaunchedEffect(Unit) {

landmarkSelectionViewModel.viewModelEventChannel.collect { event ->

when (event) {

is ViewModelEvent.UserMessage -> {

snackbarHostState.showSnackbar(

message = event.message,

duration = SnackbarDuration.Short

)

}

}

}

}

CommonScreen(

titleId = R.string.landmark_selection_button,

commonViewModel = commonViewModel,

onNavigateUp = { finish() },

snackbarHostState = snackbarHostState

) { paddingValues ->

val location by landmarkSelectionViewModel.location.collectAsStateWithLifecycle()

val nearbyObjectsWithLocations by landmarkSelectionViewModel.nearbyObjectsWithLatLngs.collectAsStateWithLifecycle()

val displayAddress by landmarkSelectionViewModel.displayAddress.collectAsStateWithLifecycle()

val userMarker = rememberMarkerState(position = location)

val commonViewState by commonViewModel.commonViewState.collectAsStateWithLifecycle()

val landmarkMarkers by landmarkSelectionViewModel.landmarkMarkers.collectAsStateWithLifecycle()

LandmarkSelectionContent(

modifier = Modifier

.fillMaxSize()

.padding(paddingValues),

userLocation = location,

userMarker = userMarker,

onMapClicked = { latLng ->

landmarkSelectionViewModel.onEvent(LandmarkSelectionEvent.OnUserLocationChanged(latLng))

},

nearbyObjectsWithLocations = nearbyObjectsWithLocations,

address = displayAddress,

showMap = commonViewState.showMap,

landmarkMarkers = landmarkMarkers

)

}

}

}

}