started implementing set addition

app/src/main/java/fr/uparis/diamantkennel/memorisationapplication/HomeScreen.kt

@@ -36,6 +36,7 @@ import androidx.compose.ui.unit.sp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import fr.uparis.diamantkennel.memorisationapplication.data.SetOfQuestions
 import fr.uparis.diamantkennel.memorisationapplication.data.SetQuestions
+import fr.uparis.diamantkennel.memorisationapplication.ui.ErrorsAjout
 import fr.uparis.diamantkennel.memorisationapplication.ui.HomeViewModel
 
 @Composable
@@ -45,20 +46,33 @@ fun HomeScreen(padding: PaddingValues, model: HomeViewModel = viewModel()) {
     val setOfQuestions by model.setFlow.collectAsState(listOf())
     val currentSelection by model.selected
 
-    var wantToCreate by remember { mutableStateOf(false) }
-    var wantToImport by remember { mutableStateOf(false) }
+    val wantToCreate by model.wantToCreate
+    val wantToImport by model.wantToImport
+
+    val errorEntry by model.error
 
     if (wantToCreate) {
-        DialogCreation(
-            annuler = {wantToCreate = false},
-            confirmer = {wantToCreate = false}
+        CreationDialog(
+            annuler = {model.setCreation(false)},
+            confirmer = {model.setCreation(false)},
+            model = model
+        )
+    }
+
+    if (errorEntry != null) {
+        ErrorDialog(
+            when (errorEntry!!) {
+                ErrorsAjout.BAD_ENTRY -> context.getString(R.string.error_bad_entry)
+                ErrorsAjout.DUPLICATE -> context.getString(R.string.error_duplicate)
+            }, model::cleanErrors
         )
     }
 
     if (wantToImport) {
-        DialogImportation(
-            annuler = {wantToImport = false},
-            confirmer = {wantToImport = false}
+        ImportDialog(
+            annuler = {model.setImportation(false)},
+            confirmer = {model.setImportation(false)}/*,
+            model = model*/
         )
     }
 
@@ -71,7 +85,7 @@ fun HomeScreen(padding: PaddingValues, model: HomeViewModel = viewModel()) {
         Row(modifier = Modifier.fillMaxWidth(), horizontalArrangement = Arrangement.SpaceEvenly) {
             Button(onClick = {
                 Toast.makeText(context, "Create", Toast.LENGTH_SHORT).show()
-                wantToCreate = true
+                model.setCreation(true)
             }) {
                 Text(text = context.getString(R.string.main_button_create))
             }
@@ -80,7 +94,7 @@ fun HomeScreen(padding: PaddingValues, model: HomeViewModel = viewModel()) {
             }
             Button(onClick = {
                 Toast.makeText(context, "Import", Toast.LENGTH_SHORT).show()
-                wantToImport = true
+                model.setImportation(true)
             }) {
                 Text(text = context.getString(R.string.main_button_import))
             }
@@ -98,17 +112,21 @@ fun HomeScreen(padding: PaddingValues, model: HomeViewModel = viewModel()) {
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
-fun DialogCreation(annuler: () -> Unit, confirmer: () -> Unit) {
-    var sujet by remember {mutableStateOf("")}
+fun CreationDialog(
+    annuler: () -> Unit,
+    confirmer: () -> Unit,
+    model : HomeViewModel = viewModel()
+) {
+    val sujet by model.sujet
 
     AlertDialog(
         onDismissRequest = annuler,
         title = { Text(text ="Créer un sujet") },
         text = {
             OutlinedTextField(
-                value = sujet,
-                onValueChange = { newTextValue -> sujet = newTextValue},
-                label = { Text("Nouveau sujet") }
+                sujet,
+                label = { Text("Nouveau sujet") },
+                onValueChange = { model.onSujetChange(it) }
             )
         },
         confirmButton = {
@@ -129,7 +147,7 @@ fun DialogCreation(annuler: () -> Unit, confirmer: () -> Unit) {
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
-fun DialogImportation(annuler: () -> Unit, confirmer: () -> Unit) {
+fun ImportDialog(annuler: () -> Unit, confirmer: () -> Unit) {
     val radioOptions = listOf("Locale", "Internet")
     val (selectedOption, onOptionSelected) = remember {mutableStateOf(radioOptions[0])}
 
@@ -188,6 +206,14 @@ fun DialogImportation(annuler: () -> Unit, confirmer: () -> Unit) {
     )
 }
 
+@Composable
+fun ErrorDialog(errMsg: String, dismiss: () -> Unit) =
+    AlertDialog(onDismissRequest = dismiss,
+        title = { Text(text = "Erreur")},
+        text = { Text(text = errMsg) },
+        confirmButton = {Button(onClick = dismiss) { Text(text = "Ok") }}
+    )
+
 @Composable
 fun ShowList(
     sets: List<SetOfQuestions>,

app/src/main/java/fr/uparis/diamantkennel/memorisationapplication/data/MemoDao.kt

@@ -1,13 +1,21 @@
 package fr.uparis.diamantkennel.memorisationapplication.data
 
 import androidx.room.Dao
+import androidx.room.Insert
 import androidx.room.Query
 import androidx.room.Transaction
 import kotlinx.coroutines.flow.Flow
 
 @Dao
 interface MemoDao {
+    @Insert
+    suspend fun insert(set: SetQuestions)
+
     @Transaction
     @Query("SELECT * FROM SetQuestions")
     fun loadAllSets(): Flow<List<SetOfQuestions>>
+
+    @Transaction
+    @Query("DELETE FROM SetQuestions")
+    fun deleteTable()
 }

app/src/main/java/fr/uparis/diamantkennel/memorisationapplication/ui/ErrorsAjout.kt

@@ -0,0 +1,3 @@
+package fr.uparis.diamantkennel.memorisationapplication.ui
+
+enum class ErrorsAjout { BAD_ENTRY, DUPLICATE}

app/src/main/java/fr/uparis/diamantkennel/memorisationapplication/ui/HomeViewModel.kt

@@ -1,14 +1,70 @@
 package fr.uparis.diamantkennel.memorisationapplication.ui
 
 import android.app.Application
+import android.database.sqlite.SQLiteConstraintException
 import androidx.compose.runtime.mutableStateOf
 import androidx.lifecycle.AndroidViewModel
+import androidx.lifecycle.viewModelScope
 import fr.uparis.diamantkennel.memorisationapplication.MemoApplication
 import fr.uparis.diamantkennel.memorisationapplication.data.SetQuestions
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 
 class HomeViewModel(application: Application) : AndroidViewModel(application) {
     private val dao = (application as MemoApplication).database.memoDao()
 
     var setFlow = dao.loadAllSets()
     var selected = mutableStateOf<SetQuestions?>(null)
+
+    var wantToCreate = mutableStateOf(false)
+    var wantToImport = mutableStateOf(false)
+
+    var sujet = mutableStateOf("")
+    var error = mutableStateOf<ErrorsAjout?>(null)
+
+    /* Listener */
+    fun onSujetChange(s: String) {
+        sujet.value = s
+    }
+
+    fun setCreation(t: Boolean) {
+        wantToCreate.value = t
+    }
+
+    fun setImportation(t: Boolean) {
+        wantToImport.value = t
+    }
+
+
+    /* Methods */
+
+    fun addSet() {
+        if (sujet.value.isBlank()) {
+            error.value = ErrorsAjout.BAD_ENTRY
+            return
+        }
+
+        viewModelScope.launch(Dispatchers.IO) {
+            try {
+                dao.insert(
+                    SetQuestions(
+                        name = sujet.value.trim()
+                    )
+                )
+            } catch (_: SQLiteConstraintException) {
+                error.value = ErrorsAjout.DUPLICATE
+            }
+
+            sujet.value = ""
+        }
+    }
+
+    private fun reset() {
+        sujet.value = ""
+        error.value = null
+    }
+
+    fun cleanErrors() {
+        error.value = null
+    }
 }

app/src/main/res/values/strings.xml

@@ -5,4 +5,6 @@
     <string name="main_button_modify">Modifier</string>
     <string name="main_button_import">Importer</string>
     <string name="main_button_start">Lancer</string>
+    <string name="error_bad_entry">Erreur : entrée invalide</string>
+    <string name="error_duplicate">Erreur : doublon</string>
 </resources>