Finished validators at AddBatteryFragment.kt

app/src/main/java/com/sockenklaus/batterytracker/ui/fragments/add_battery/AddBatteryFragment.kt

@@ -34,7 +34,6 @@ import kotlinx.coroutines.launch
  * create an instance of this fragment.
  */
 class AddBatteryFragment : Fragment() {
-    // TODO: Rename and change types of parameters
     private var _binding: FragmentAddBatteryBinding? = null
     private val binding get() = _binding!!
 
@@ -47,6 +46,9 @@ class AddBatteryFragment : Fragment() {
         val db = BatteryTrackerDB.getInstance(requireContext())
         val view = binding.root
 
+        /**
+         * TODO: Move database interactions to ViewModel!
+         */
         val batteries = db.batteryDao().getBatteries().asLiveData()
         var listBatteries = emptyList<Battery>()
 
@@ -57,12 +59,12 @@ class AddBatteryFragment : Fragment() {
         binding.root.setContent {
             BatteryTrackerTheme {
                 var batteryId by remember { mutableStateOf("") }
-                var declaredCapacity by remember { mutableStateOf("")}
+                var batteryHasError by remember { mutableStateOf(false) }
+                var batteryHelperId: Int? by remember { mutableStateOf(null) }
 
-                var batteryIsError by remember { mutableStateOf(false) }
-                var batteryHelper: Int? by remember { mutableStateOf(null) }
-                var chargeIsError by remember { mutableStateOf(false) }
-                var chargeHelper: Int? by remember { mutableStateOf(null) }
+                var declaredCapacity by remember { mutableStateOf("")}
+                var capacityHasError by remember { mutableStateOf(false) }
+                var capacityHelperId: Int? by remember { mutableStateOf(null) }
 
                 val outerPadding = 24.dp
                 val innerPadding = 16.dp
@@ -74,38 +76,47 @@ class AddBatteryFragment : Fragment() {
                         value = batteryId,
                         onValueChange = { value ->
                             batteryId = value
-                            onChangeBatteryId(
-                                value = value,
-                                batteries = listBatteries,
-                                changeHelper = { ch -> batteryHelper = ch },
-                                changeIsError = { ce -> batteryIsError = ce }
-                            )
+                            batteryHasError = false
+                            batteryHelperId = null
+                            if(listBatteries.any{ it.id.lowercase() == value.lowercase() }){
+                                batteryHasError = true
+                                batteryHelperId = R.string.helper_battery_not_unique
+                            }
                         },
                         labelId = R.string.hint_enter_battery_id,
                         leadingIcon = { Icon(Icons.Default.Tag, "Icon Tag") },
-                        isError = batteryIsError,
-                        helperTextId = batteryHelper
+                        isError = batteryHasError,
+                        helperTextId = batteryHelperId
                     )
 
                     Spacer(Modifier.size(innerPadding))
 
                     MyOutlinedTextField(
                         value = declaredCapacity,
-                        onValueChange = { declaredCapacity = validateDecimal(it, declaredCapacity) },
+                        onValueChange = {
+                            declaredCapacity = validateDecimal(it, declaredCapacity)
+                            capacityHasError = false
+                            capacityHelperId = null
+                        },
                         labelId = R.string.hint_enter_declared_capacity,
                         keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Decimal),
                         leadingIcon = { Icon(Icons.Default.BatteryFull, "Icon Battery Full") },
-                        isError = chargeIsError,
-                        helperTextId = chargeHelper
+                        isError = capacityHasError,
+                        helperTextId = capacityHelperId
                     )
 
                     Spacer(Modifier.size(outerPadding))
 
                     ExtendedFloatingActionButton(
-                        onClick = { saveBattery(
-                            batteryId, declaredCapacity
-                        ) },
-                        icon = { Icon(Icons.Default.Save, null) },
+                        onClick = {
+                            if(batteryId.isBlank()) batteryHasError = true
+                            if(declaredCapacity.isBlank()) capacityHasError = true
+
+                            if(!batteryHasError && !capacityHasError){
+                                saveBattery(batteryId, declaredCapacity)
+                            }
+                        },
+                        icon = { Icon(Icons.Default.Save, "Icon Save") },
                         text = { Text(stringResource(R.string.button_save_battery)) },
                         modifier = Modifier.align(Alignment.End)
                     )
@@ -150,28 +161,10 @@ class AddBatteryFragment : Fragment() {
         )
     }
 
-    private fun onChangeBatteryId(
-        value: String,
-        batteries: List<Battery>,
-        changeIsError: (Boolean) -> Unit,
-        changeHelper: (Int?) -> Unit
+    private fun saveBattery(
+        id: String,
+        declaredCapacity: String
     ) {
-        changeIsError(false)
-        changeHelper(null)
-        if(batteries.any{ it.id.lowercase() == value.lowercase() }){
-            changeIsError(true)
-            changeHelper(R.string.helper_battery_not_unique)
-        }
-        if(value.isEmpty()){
-            changeIsError(true)
-            changeHelper(null)
-        }
-    }
-
-    /*
-    TODO: Implement the action
-     */
-    private fun saveBattery(id: String, declaredCapacity: String) {
         val db = BatteryTrackerDB.getInstance(requireContext())
 
         lifecycleScope.launch(Dispatchers.IO){