[FTA] advance (go back) to (from) address confirmation screen

app/src/main/java/app/nexd/android/ui/seeker/create/SeekerCreateRequestViewModel.kt

@@ -15,6 +15,7 @@ import app.nexd.android.api.model.CreateHelpRequestArticleDto
 import app.nexd.android.api.model.HelpRequestCreateDto
 import app.nexd.android.api.model.Unit
 import app.nexd.android.ui.common.helprequest.HelpRequestCreateArticleBinder.ArticleViewModel
+import app.nexd.android.ui.utils.SingleLiveEvent
 import app.nexd.android.ui.utils.extensions.currentLanguage
 import app.nexd.android.ui.utils.extensions.toLiveData
 import io.reactivex.BackpressureStrategy.LATEST
@@ -25,11 +26,12 @@ class SeekerCreateRequestViewModel(private val context: Context, private val api
 
     sealed class Progress {
         object Idle : Progress()
-        object Loading : Progress()
         class Error(@StringRes val message: Int? = null) : Progress()
         object Finished : Progress()
     }
 
+
+    val navigateToConfirmAddress = SingleLiveEvent<Any>()
     val progress: MutableLiveData<Progress> = MutableLiveData(Progress.Idle)
 
     val firstName = MutableLiveData<String?>()
@@ -213,4 +215,25 @@ class SeekerCreateRequestViewModel(private val context: Context, private val api
             true
         }
     }
+
+    fun confirmItems() {
+        // to also include null check for inputs the negative case
+        // (no confirmed items, ie = size < 2) is evaluated first
+        val invalid =
+            // item name null or empty
+            inputs.value?.any { it.articleName.value.isNullOrBlank() } ?: true ||
+                    // no item added
+                    inputs.value?.size ?: 1 < 2 ||
+                    // amount is null, empty or less than 1
+                    inputs.value?.any { it.amount.value.isNullOrBlank() || it.amount.value?.toIntOrNull() ?: 0 < 1 } ?: true ||
+                    // no selected Unit
+                    inputs.value?.any { it.selectedUnit.value == null } ?: true
+
+        if (invalid) {
+            progress.value = Progress.Error(R.string.seeker_request_create_no_articles)
+        } else {
+            navigateToConfirmAddress.call()
+            progress.value = Progress.Idle
+        }
+    }
 }

app/src/main/java/app/nexd/android/ui/seeker/create/address/SeekerCreateRequestConfirmAddressFragment.kt

@@ -61,9 +61,6 @@ class SeekerCreateRequestConfirmAddressFragment : Fragment() {
                 is Idle -> {
                     // nothing to do
                 }
-                is Loading -> {
-                    //
-                }
                 is Error -> {
                     it.message?.let { errorMessageId ->
                         DefaultSnackbar(binding.root, errorMessageId, Snackbar.LENGTH_SHORT)

app/src/main/java/app/nexd/android/ui/seeker/create/articles/SeekerCreateRequestEnterArticlesFragment.kt

@@ -54,6 +54,13 @@ class SeekerCreateRequestEnterArticlesFragment : Fragment() {
 
         initRecyclerView()
         setVmObserver()
+        setUi()
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+
+        adapter.removeAllSections()
     }
 
     private fun initRecyclerView() {
@@ -105,9 +112,6 @@ class SeekerCreateRequestEnterArticlesFragment : Fragment() {
                 is Idle -> {
                     //nothing to do
                 }
-                is Loading -> {
-                    findNavController().navigate(SeekerCreateRequestEnterArticlesFragmentDirections.toSeekerCreateRequestConfirmAddressFragment())
-                }
                 is Finished -> {
                     // state not reachable
                 }
@@ -122,5 +126,16 @@ class SeekerCreateRequestEnterArticlesFragment : Fragment() {
                 )
             }
         })
+
+        vm.navigateToConfirmAddress.observe(viewLifecycleOwner, Observer {
+            findNavController().navigate(SeekerCreateRequestEnterArticlesFragmentDirections.toSeekerCreateRequestConfirmAddressFragment())
+        })
     }
+
+    private fun setUi() {
+        binding.buttonAccept.setOnClickListener {
+            vm.confirmItems()
+        }
+    }
+
 }