refactor accountUpdateSource from Call to coroutine (#4386)

It is the last place where we used a Call 🥳

app/src/main/java/com/keylesspalace/tusky/components/preference/AccountPreferencesFragment.kt

@@ -21,7 +21,9 @@ import android.os.Build
 import android.os.Bundle
 import android.util.Log
 import androidx.annotation.DrawableRes
+import androidx.lifecycle.lifecycleScope
 import androidx.preference.PreferenceFragmentCompat
+import at.connyduck.calladapter.networkresult.fold
 import com.google.android.material.color.MaterialColors
 import com.google.android.material.snackbar.Snackbar
 import com.keylesspalace.tusky.BaseActivity
@@ -58,9 +60,7 @@ import com.mikepenz.iconics.typeface.library.googlematerial.GoogleMaterial
 import com.mikepenz.iconics.utils.colorInt
 import com.mikepenz.iconics.utils.sizeRes
 import javax.inject.Inject
-import retrofit2.Call
+import kotlinx.coroutines.launch
-import retrofit2.Callback
-import retrofit2.Response
 
 class AccountPreferencesFragment : PreferenceFragmentCompat(), Injectable {
     @Inject
@@ -293,11 +293,9 @@ class AccountPreferencesFragment : PreferenceFragmentCompat(), Injectable {
     ) {
         // TODO these could also be "datastore backed" preferences (a ServerPreferenceDataStore); follow-up of issue #3204
 
+        viewLifecycleOwner.lifecycleScope.launch {
             mastodonApi.accountUpdateSource(visibility, sensitive, language)
-            .enqueue(object : Callback<Account> {
+                .fold({ account: Account ->
-                override fun onResponse(call: Call<Account>, response: Response<Account>) {
-                    val account = response.body()
-                    if (response.isSuccessful && account != null) {
                     accountManager.activeAccount?.let {
                         it.defaultPostPrivacy = account.source?.privacy
                             ?: Status.Visibility.PUBLIC
@@ -305,18 +303,12 @@ class AccountPreferencesFragment : PreferenceFragmentCompat(), Injectable {
                         it.defaultPostLanguage = language.orEmpty()
                         accountManager.saveAccount(it)
                     }
-                    } else {
+                }, { t ->
-                        Log.e("AccountPreferences", "failed updating settings on server")
-                        showErrorSnackbar(visibility, sensitive)
-                    }
-                }
-
-                override fun onFailure(call: Call<Account>, t: Throwable) {
                     Log.e("AccountPreferences", "failed updating settings on server", t)
                     showErrorSnackbar(visibility, sensitive)
-                }
                 })
         }
+    }
 
     private fun showErrorSnackbar(visibility: String?, sensitive: Boolean?) {
         view?.let { view ->

app/src/main/java/com/keylesspalace/tusky/network/MastodonApi.kt

@@ -49,7 +49,6 @@ import com.keylesspalace.tusky.entity.Translation
 import com.keylesspalace.tusky.entity.TrendingTag
 import okhttp3.MultipartBody
 import okhttp3.RequestBody
-import retrofit2.Call
 import retrofit2.Response
 import retrofit2.http.Body
 import retrofit2.http.DELETE
@@ -292,11 +291,11 @@ interface MastodonApi {
 
     @FormUrlEncoded
     @PATCH("api/v1/accounts/update_credentials")
-    fun accountUpdateSource(
+    suspend fun accountUpdateSource(
         @Field("source[privacy]") privacy: String?,
         @Field("source[sensitive]") sensitive: Boolean?,
         @Field("source[language]") language: String?
-    ): Call<Account>
+    ): NetworkResult<Account>
 
     @Multipart
     @PATCH("api/v1/accounts/update_credentials")