fix: retain value of time and type of event

app/src/main/java/org/fossasia/openevent/general/di/Modules.kt

@@ -59,6 +59,7 @@ import org.fossasia.openevent.general.paypal.Paypal
 import org.fossasia.openevent.general.paypal.PaypalApi
 import org.fossasia.openevent.general.search.GeoLocationViewModel
 import org.fossasia.openevent.general.search.SearchLocationViewModel
+import org.fossasia.openevent.general.search.SearchTimeViewModel
 import org.fossasia.openevent.general.search.SearchViewModel
 import org.fossasia.openevent.general.search.LocationService
 import org.fossasia.openevent.general.search.SearchTypeViewModel
@@ -146,7 +147,8 @@ val viewModelModule = module {
     viewModel { SearchViewModel(get(), get(), get(), get()) }
     viewModel { AttendeeViewModel(get(), get(), get(), get(), get(), get(), get()) }
     viewModel { SearchLocationViewModel(get()) }
-    viewModel { SearchTypeViewModel(get()) }
+    viewModel { SearchTimeViewModel(get()) }
+    viewModel { SearchTypeViewModel(get(), get()) }
     viewModel { TicketsViewModel(get(), get(), get(), get()) }
     viewModel { AboutEventViewModel(get(), get()) }
     viewModel { SocialLinksViewModel(get(), get()) }

app/src/main/java/org/fossasia/openevent/general/search/SearchFragment.kt

@@ -31,12 +31,6 @@ import org.fossasia.openevent.general.utils.Utils.setToolbar
 
 class SearchFragment : Fragment() {
     private val searchViewModel by viewModel<SearchViewModel>()
-    private val safeArgs: SearchFragmentArgs? by lazy {
-        // When search fragment is opened using BottomNav, then fragment arguments are null
-        // navArgs delegate throws an IllegalStateException when arguments are null, so we construct SearchFragmentArgs
-        // from the arguments bundle
-        arguments?.let { SearchFragmentArgs.fromBundle(it) }
-    }
     private lateinit var rootView: View
     private lateinit var searchView: SearchView
 
@@ -59,8 +53,8 @@ class SearchFragment : Fragment() {
                     Navigation.findNavController(rootView).navigate(R.id.searchTimeFragment, bundle, getAnimSlide())
                 }
         }
-
-        val time = safeArgs?.stringSavedDate
+        searchViewModel.loadSavedTime()
+        val time = searchViewModel.savedTime
         if (time.isNullOrBlank()) rootView.timeTextView.text = getString(R.string.anytime)
         else {
             try {
@@ -74,7 +68,8 @@ class SearchFragment : Fragment() {
                 rootView.timeTextView.text = time
             }
         }
-        val type = safeArgs?.stringSavedType
+        searchViewModel.loadSavedType()
+        val type = searchViewModel.savedType
         rootView.eventTypeTextView.text = if (type.isNullOrBlank()) getString(R.string.anything) else type
 
         searchViewModel.loadSavedLocation()
@@ -129,8 +124,8 @@ class SearchFragment : Fragment() {
                 SearchResultsFragmentArgs.Builder()
                     .setQuery(query)
                     .setLocation(rootView.locationTextView.text.toString().nullToEmpty())
-                    .setDate((safeArgs?.stringSavedDate ?: getString(R.string.anytime)).nullToEmpty())
-                    .setType((safeArgs?.stringSavedType ?: getString(R.string.anything)).nullToEmpty())
+                    .setDate((searchViewModel.savedTime ?: getString(R.string.anytime)).nullToEmpty())
+                    .setType((searchViewModel.savedType ?: getString(R.string.anything)).nullToEmpty())
                     .build()
                     .toBundle()
                     .also { bundle ->

app/src/main/java/org/fossasia/openevent/general/search/SearchTimeFragment.kt

@@ -20,6 +20,7 @@ import org.fossasia.openevent.general.R
 import org.fossasia.openevent.general.event.EventUtils.getSimpleFormattedDate
 import java.util.Calendar
 import org.fossasia.openevent.general.utils.Utils.setToolbar
+import org.koin.androidx.viewmodel.ext.android.viewModel
 
 const val ANYTIME = "Anytime"
 const val TODAY = "Today"
@@ -29,6 +30,8 @@ const val NEXT_MONTH = "In the next month"
 
 class SearchTimeFragment : Fragment() {
     private val safeArgs: SearchTimeFragmentArgs by navArgs()
+    private val searchTimeViewModel by viewModel<SearchTimeViewModel>()
+
     private lateinit var rootView: View
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
@@ -78,9 +81,9 @@ class SearchTimeFragment : Fragment() {
     }
 
     private fun redirectToSearch(time: String) {
-        val args = SearchFragmentArgs.Builder().setStringSavedDate(time).build().toBundle()
+        searchTimeViewModel.saveTime(time)
         val navOptions = NavOptions.Builder().setPopUpTo(R.id.eventsFragment, false).build()
-        Navigation.findNavController(rootView).navigate(R.id.searchFragment, args, navOptions)
+        Navigation.findNavController(rootView).navigate(R.id.searchFragment, null, navOptions)
     }
 
     override fun onOptionsItemSelected(item: MenuItem): Boolean {

app/src/main/java/org/fossasia/openevent/general/search/SearchTimeViewModel.kt

@@ -0,0 +1,13 @@
+package org.fossasia.openevent.general.search
+
+import androidx.lifecycle.ViewModel
+import org.fossasia.openevent.general.data.Preference
+
+const val SAVED_TIME = "TIME"
+
+class SearchTimeViewModel(private val preference: Preference) : ViewModel() {
+
+    fun saveTime(query: String) {
+        preference.putString(SAVED_TIME, query)
+    }
+}

app/src/main/java/org/fossasia/openevent/general/search/SearchTypeFragment.kt

@@ -35,7 +35,7 @@ class SearchTypeFragment : Fragment() {
         val adapter = ArrayAdapter(context, R.layout.event_type_list, eventTypesList)
         rootView.eventTypesLv.adapter = adapter
 
-        searchTypeViewModel.eventLocations
+        searchTypeViewModel.eventTypes
             .nonNull()
             .observe(this, Observer { list ->
                 list.forEach {
@@ -50,8 +50,8 @@ class SearchTypeFragment : Fragment() {
     }
 
     private fun redirectToSearch(type: String) {
-        val args = SearchFragmentArgs.Builder().setStringSavedType(type).build().toBundle()
+        searchTypeViewModel.saveType(type)
         val navOptions = NavOptions.Builder().setPopUpTo(R.id.eventsFragment, false).build()
-        Navigation.findNavController(rootView).navigate(R.id.searchFragment, args, navOptions)
+        Navigation.findNavController(rootView).navigate(R.id.searchFragment, null, navOptions)
     }
 }

app/src/main/java/org/fossasia/openevent/general/search/SearchTypeViewModel.kt

@@ -6,30 +6,38 @@ import androidx.lifecycle.ViewModel
 import io.reactivex.android.schedulers.AndroidSchedulers
 import io.reactivex.disposables.CompositeDisposable
 import io.reactivex.schedulers.Schedulers
+import org.fossasia.openevent.general.data.Preference
 import org.fossasia.openevent.general.event.EventService
 import org.fossasia.openevent.general.event.types.EventType
 import timber.log.Timber
 
+const val SAVED_TYPE = "TYPE"
+
 class SearchTypeViewModel(
+    private val preference: Preference,
     private val eventService: EventService
 ) : ViewModel() {
 
     private val compositeDisposable = CompositeDisposable()
-    private val mutableEventLocations = MutableLiveData<List<EventType>>()
-    val eventLocations: LiveData<List<EventType>> = mutableEventLocations
+    private val mutableEventTypes = MutableLiveData<List<EventType>>()
+    val eventTypes: LiveData<List<EventType>> = mutableEventTypes
 
     fun loadEventTypes() {
         compositeDisposable.add(eventService.getEventTypes()
             .subscribeOn(Schedulers.io())
             .observeOn(AndroidSchedulers.mainThread())
             .subscribe({
-                mutableEventLocations.value = it
+                mutableEventTypes.value = it
             }, {
                 Timber.e(it, "Error fetching events types")
             })
         )
     }
 
+    fun saveType(query: String) {
+        preference.putString(SAVED_TYPE, query)
+    }
+
     override fun onCleared() {
         super.onCleared()
         compositeDisposable.clear()

app/src/main/java/org/fossasia/openevent/general/search/SearchViewModel.kt

@@ -14,6 +14,7 @@ import org.fossasia.openevent.general.data.Preference
 import org.fossasia.openevent.general.data.Resource
 import org.fossasia.openevent.general.event.Event
 import org.fossasia.openevent.general.event.EventService
+import org.fossasia.openevent.general.event.types.EventType
 import org.fossasia.openevent.general.utils.DateTimeUtils.getNextDate
 import org.fossasia.openevent.general.utils.DateTimeUtils.getNextMonth
 import org.fossasia.openevent.general.utils.DateTimeUtils.getNextToNextDate
@@ -43,16 +44,38 @@ class SearchViewModel(
     val chipClickable: LiveData<Boolean> = mutableChipClickable
     var searchEvent: String? = null
     var savedLocation: String? = null
+    var savedType: String? = null
+    var savedTime: String? = null
     private val savedNextDate = getNextDate()
     private val savedNextToNextDate = getNextToNextDate()
     private val savedWeekendDate = getWeekendDate()
     private val savedWeekendNextDate = getNextToWeekendDate()
     private val savedNextMonth = getNextMonth()
     private val savedNextToNextMonth = getNextToNextMonth()
+    private val mutableEventTypes = MutableLiveData<List<EventType>>()
+    val eventTypes: LiveData<List<EventType>> = mutableEventTypes
+
+    fun loadEventTypes() {
+        compositeDisposable.add(eventService.getEventTypes()
+            .subscribeOn(Schedulers.io())
+            .observeOn(AndroidSchedulers.mainThread())
+            .subscribe({
+                mutableEventTypes.value = it
+            }, {
+                Timber.e(it, "Error fetching events types")
+            })
+        )
+    }
 
     fun loadSavedLocation() {
         savedLocation = preference.getString(SAVED_LOCATION)
     }
+    fun loadSavedType() {
+        savedType = preference.getString(SAVED_TYPE)
+    }
+    fun loadSavedTime() {
+        savedTime = preference.getString(SAVED_TIME)
+    }
 
     fun loadEvents(location: String, time: String, type: String) {
         if (mutableEvents.value != null) {

app/src/main/res/navigation/navigation_graph.xml

@@ -42,16 +42,6 @@
         android:name="org.fossasia.openevent.general.search.SearchFragment"
         android:label="SearchFragment"
         tools:layout="@layout/fragment_search" >
-        <argument
-            android:name="@string/saved_date"
-            app:argType="string"
-            android:defaultValue="@null"
-            app:nullable="true"/>
-        <argument
-            android:name="@string/savedType"
-            app:argType="string"
-            android:defaultValue="@null"
-            app:nullable="true"/>
     </fragment>
     <fragment
         android:id="@+id/searchLocationFragment"