#15 and #16 form to create and edit subject

app/src/main/java/be/ugent/sel/studeez/screens/tasks/forms/SubjectFormScreen.kt

@@ -0,0 +1,106 @@
+package be.ugent.sel.studeez.screens.tasks.forms
+
+import androidx.annotation.StringRes
+import androidx.compose.foundation.layout.Column
+import androidx.compose.material.OutlinedTextField
+import androidx.compose.material.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.Preview
+import be.ugent.sel.studeez.R
+import be.ugent.sel.studeez.common.composable.BasicButton
+import be.ugent.sel.studeez.common.composable.DeleteButton
+import be.ugent.sel.studeez.common.composable.SecondaryScreenTemplate
+import be.ugent.sel.studeez.common.ext.basicButton
+import be.ugent.sel.studeez.common.ext.fieldModifier
+import be.ugent.sel.studeez.resources
+
+@Composable
+fun SubjectAddRoute(
+    goBack: () -> Unit,
+    open: (String) -> Unit,
+    viewModel: SubjectFormViewModel,
+) {
+    val uiState by viewModel.uiState
+    SubjectForm(
+        title = R.string.new_subject,
+        goBack = goBack,
+        uiState = uiState,
+        onConfirm = { viewModel.onCreate(open) },
+    )
+}
+
+@Composable
+fun SubjectEditRoute(
+    goBack: () -> Unit,
+    open: (String) -> Unit,
+    viewModel: SubjectFormViewModel,
+) {
+    val uiState by viewModel.uiState
+    SubjectForm(
+        title = R.string.edit_subject,
+        goBack = goBack,
+        uiState = uiState,
+        onConfirm = { viewModel.onEdit(open) },
+    ) {
+        DeleteButton(onClick = viewModel::onDelete)
+    }
+}
+
+@Composable
+fun SubjectForm(
+    @StringRes title: Int,
+    goBack: () -> Unit,
+    uiState: SubjectFormUiState,
+    onConfirm: () -> Unit,
+    extraButton: @Composable () -> Unit = {},
+) {
+    SecondaryScreenTemplate(
+        title = resources().getString(title),
+        popUp = goBack,
+    ) {
+        Column {
+            OutlinedTextField(
+                singleLine = true,
+                value = uiState.name,
+                onValueChange = {},
+                placeholder = { Text(stringResource(id = R.string.username)) },
+                modifier = Modifier.fieldModifier(),
+            )
+            BasicButton(
+                text = R.string.confirm,
+                modifier = Modifier.basicButton(),
+                onClick = onConfirm,
+            )
+            extraButton()
+        }
+    }
+}
+
+@Preview
+@Composable
+fun AddSubjectFormPreview() {
+    SubjectForm(
+        title = R.string.new_subject,
+        goBack = {},
+        uiState = SubjectFormUiState(),
+        onConfirm = {},
+    )
+}
+
+@Preview
+@Composable
+fun EditSubjectFormPreview() {
+    SubjectForm(
+        title = R.string.edit_subject,
+        goBack = {},
+        uiState = SubjectFormUiState(
+            name = "Test Subject",
+        ),
+        onConfirm = {},
+    ) {
+        DeleteButton {}
+    }
+}

app/src/main/java/be/ugent/sel/studeez/screens/tasks/forms/SubjectFormUiState.kt

@@ -0,0 +1,6 @@
+package be.ugent.sel.studeez.screens.tasks.forms
+
+data class SubjectFormUiState(
+    val name: String = "",
+    val color: Long = 0xFFF44336,
+)

app/src/main/java/be/ugent/sel/studeez/screens/tasks/forms/SubjectFormViewModel.kt

@@ -0,0 +1,63 @@
+package be.ugent.sel.studeez.screens.tasks.forms
+
+import androidx.compose.runtime.mutableStateOf
+import be.ugent.sel.studeez.data.SelectedSubject
+import be.ugent.sel.studeez.data.local.models.task.Subject
+import be.ugent.sel.studeez.domain.LogService
+import be.ugent.sel.studeez.domain.SubjectDAO
+import be.ugent.sel.studeez.navigation.StudeezDestinations
+import be.ugent.sel.studeez.screens.StudeezViewModel
+import dagger.hilt.android.lifecycle.HiltViewModel
+import javax.inject.Inject
+
+@HiltViewModel
+class SubjectFormViewModel @Inject constructor(
+    private val subjectDAO: SubjectDAO,
+    private val selectedSubject: SelectedSubject,
+    logService: LogService,
+) : StudeezViewModel(logService) {
+    var uiState = mutableStateOf(SubjectFormUiState())
+        private set
+
+    private val name: String
+        get() = uiState.value.name
+
+    private val color: Long
+        get() = uiState.value.color
+
+    fun onNameChange(newValue: String) {
+        uiState.value = uiState.value.copy(name = newValue)
+    }
+
+    fun onColorChange(newValue: Long) {
+        uiState.value = uiState.value.copy(color = newValue)
+    }
+
+    fun onDelete() {
+        subjectDAO.deleteSubject(selectedSubject())
+    }
+
+    fun onCreate(open: (String) -> Unit) {
+        val newSubject = Subject(
+            name = name,
+            argb_color = color,
+        )
+        subjectDAO.saveSubject(
+            newSubject
+        )
+        selectedSubject.set(newSubject)
+        // TODO open newly created subject
+//        open(StudeezDestinations.TASKS_SCREEN)
+    }
+
+    fun onEdit(open: (String) -> Unit) {
+        val newSubject = selectedSubject().copy(
+            name = name,
+            argb_color = color,
+        )
+        subjectDAO.updateSubject(
+            newSubject
+        )
+        open(StudeezDestinations.TASKS_SCREEN)
+    }
+}