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MainActivity.kt
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MainActivity.kt
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/*
* Copyright 2022-2023 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.fhir.examples.cloudfunction
import android.os.Bundle
import android.view.MenuItem
import android.widget.TextView
import androidx.activity.viewModels
import androidx.appcompat.app.ActionBarDrawerToggle
import androidx.appcompat.app.AppCompatActivity
import androidx.core.view.GravityCompat
import androidx.drawerlayout.widget.DrawerLayout
import com.firebase.ui.auth.AuthUI
import com.firebase.ui.auth.FirebaseAuthUIActivityResultContract
import com.firebase.ui.auth.data.model.FirebaseAuthUIAuthenticationResult
import com.google.fhir.examples.cloudfunction.databinding.ActivityMainBinding
import com.google.firebase.auth.FirebaseAuth
import kotlinx.coroutines.runBlocking
import timber.log.Timber
const val MAX_RESOURCE_COUNT = 20
class MainActivity : AppCompatActivity() {
private lateinit var binding: ActivityMainBinding
private lateinit var drawerToggle: ActionBarDrawerToggle
private val viewModel: MainActivityViewModel by viewModels()
private val signInLauncher =
registerForActivityResult(
FirebaseAuthUIActivityResultContract(),
) { res -> runBlocking { onSignInResult(res) } }
override fun onCreate(savedInstanceState: Bundle?) {
val user = FirebaseAuth.getInstance().currentUser
if (user == null) {
val providers = arrayListOf(AuthUI.IdpConfig.GoogleBuilder().build())
val signInIntent =
AuthUI.getInstance()
.createSignInIntentBuilder()
.setAvailableProviders(providers)
.setAlwaysShowSignInMethodScreen(true)
.setIsSmartLockEnabled(false)
.build()
signInLauncher.launch(signInIntent)
}
super.onCreate(savedInstanceState)
binding = ActivityMainBinding.inflate(layoutInflater)
setContentView(binding.root)
initActionBar()
initNavigationDrawer()
observeLastSyncTime()
viewModel.updateLastSyncTimestamp()
}
override fun onBackPressed() {
if (binding.drawer.isDrawerOpen(GravityCompat.START)) {
binding.drawer.closeDrawer(GravityCompat.START)
return
}
super.onBackPressed()
}
fun setDrawerEnabled(enabled: Boolean) {
val lockMode =
if (enabled) DrawerLayout.LOCK_MODE_UNLOCKED else DrawerLayout.LOCK_MODE_LOCKED_CLOSED
binding.drawer.setDrawerLockMode(lockMode)
drawerToggle.isDrawerIndicatorEnabled = enabled
}
fun openNavigationDrawer() {
binding.drawer.openDrawer(GravityCompat.START)
viewModel.updateLastSyncTimestamp()
}
private fun initActionBar() {
val toolbar = binding.toolbar
setSupportActionBar(toolbar)
}
private fun initNavigationDrawer() {
binding.navigationView.setNavigationItemSelectedListener(this::onNavigationItemSelected)
drawerToggle = ActionBarDrawerToggle(this, binding.drawer, R.string.open, R.string.close)
binding.drawer.addDrawerListener(drawerToggle)
drawerToggle.syncState()
}
private fun onNavigationItemSelected(item: MenuItem): Boolean {
when (item.itemId) {
R.id.menu_sync -> {
viewModel.triggerOneTimeSync()
binding.drawer.closeDrawer(GravityCompat.START)
return false
}
}
return false
}
private fun observeLastSyncTime() {
viewModel.lastSyncTimestampLiveData.observe(this) {
binding.navigationView.getHeaderView(0).findViewById<TextView>(R.id.last_sync_tv).text = it
}
}
private suspend fun onSignInResult(result: FirebaseAuthUIAuthenticationResult) {
val response = result.idpResponse
if (result.resultCode == RESULT_OK) {
FhirApplication.dataStore(applicationContext).saveUserIdToken(response?.idpToken!!)
viewModel.authState.emit("Authenticated")
} else {
if (response == null) {
Timber.i("User cancelled")
}
response!!.error?.errorCode
}
}
}