Implemented LiveData

app/src/main/java/com/nextcloud/talk/adapters/GeocodingAdapter.kt

@@ -29,12 +29,16 @@ import androidx.recyclerview.widget.RecyclerView
 import com.nextcloud.talk.R
 import fr.dudie.nominatim.model.Address
 
-class GeocodingAdapter(private val context: Context, private val dataSource: List<Address>) :
+class GeocodingAdapter(private val context: Context, private var dataSource: List<Address>) :
     RecyclerView.Adapter<GeocodingAdapter.ViewHolder>() {
 
     interface OnItemClickListener {
         fun onItemClick(position: Int)
     }
+    fun updateData(data: List<Address>) {
+       this.dataSource = data
+        notifyDataSetChanged()
+    }
 
     private var listener: OnItemClickListener? = null
     fun setOnItemClickListener(listener: OnItemClickListener) {

app/src/main/java/com/nextcloud/talk/location/GeocodingActivity.kt

@@ -33,6 +33,8 @@ import android.view.MenuItem
 import android.view.inputmethod.EditorInfo
 import androidx.appcompat.widget.SearchView
 import androidx.core.view.MenuItemCompat
+import androidx.lifecycle.Observer
+import androidx.lifecycle.ViewModelProvider
 import androidx.preference.PreferenceManager
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
@@ -45,6 +47,7 @@ import com.nextcloud.talk.api.NcApi
 import com.nextcloud.talk.application.NextcloudTalkApplication
 import com.nextcloud.talk.databinding.ActivityGeocodingBinding
 import com.nextcloud.talk.utils.bundle.BundleKeys
+import com.nextcloud.talk.viewmodels.GeoCodingViewModel
 import fr.dudie.nominatim.client.TalkJsonNominatimClient
 import fr.dudie.nominatim.model.Address
 import kotlinx.coroutines.CoroutineScope
@@ -79,7 +82,7 @@ class GeocodingActivity :
     lateinit var adapter: GeocodingAdapter
     private var geocodingResults: List<Address> = ArrayList()
     private lateinit var recyclerView: RecyclerView
-
+    private lateinit var viewModel: GeoCodingViewModel
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         NextcloudTalkApplication.sharedApplication!!.componentApplication.inject(this)
@@ -97,6 +100,16 @@ class GeocodingActivity :
         recyclerView.layoutManager = LinearLayoutManager(this)
         adapter = GeocodingAdapter(this, geocodingResults)
         recyclerView.adapter = adapter
+        viewModel = ViewModelProvider(this).get(GeoCodingViewModel::class.java)
+
+        // Observe geocoding results LiveData
+        viewModel.getGeocodingResultsLiveData().observe(this, Observer { results ->
+            // Update the adapter with the new results
+            adapter.updateData(results)
+        })
+        val baseUrl = getString(R.string.osm_geocoder_url)
+        val email = context.getString(R.string.osm_geocoder_contact)
+        nominatimClient = TalkJsonNominatimClient(baseUrl, okHttpClient, email)
     }
 
     override fun onStart() {
@@ -169,7 +182,9 @@ class GeocodingActivity :
 
     override fun onQueryTextSubmit(query: String?): Boolean {
         this.query = query
-        searchLocation()
+        if (query != null) {
+            viewModel.searchLocation(query)
+        }
         searchView?.clearFocus()
         return true
     }

app/src/main/java/com/nextcloud/talk/viewmodels/GeoCodingViewModel.kt

@@ -0,0 +1,61 @@
+/*
+ * Nextcloud Talk application
+ *
+ * @author Samanwith KSN
+ * Copyright (C) 2023 Samanwith KSN <samanwith21@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.nextcloud.talk.viewmodels
+
+import android.util.Log
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import com.nextcloud.talk.activities.CallActivity.Companion.TAG
+import fr.dudie.nominatim.client.TalkJsonNominatimClient
+import fr.dudie.nominatim.model.Address
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import okhttp3.OkHttpClient
+
+class GeoCodingViewModel : ViewModel() {
+    private val geocodingResultsLiveData = MutableLiveData<List<Address>>()
+    fun getGeocodingResultsLiveData(): LiveData<List<Address>> {
+        return geocodingResultsLiveData
+    }
+
+    private val nominatimClient: TalkJsonNominatimClient
+    private val okHttpClient: OkHttpClient = OkHttpClient.Builder().build()
+
+    init {
+        nominatimClient = TalkJsonNominatimClient(
+            "https://nominatim.openstreetmap.org/",
+            okHttpClient,
+            " android@nextcloud.com"
+        )
+    }
+
+    fun searchLocation(query: String) {
+        CoroutineScope(Dispatchers.IO).launch {
+            try {
+                val results = nominatimClient.search(query) as ArrayList<Address>
+                geocodingResultsLiveData.postValue(results)
+            } catch (e: Exception) {
+                Log.e(TAG, "Failed to get geocoded addresses", e)
+            }
+        }
+    }
+}