Open tag detail from list

shared/src/commonMain/kotlin/com/faltenreich/diaguard/navigation/screen/TagDetailScreen.kt

@@ -1,4 +1,15 @@
 package com.faltenreich.diaguard.navigation.screen
 
-class TagDetailScreen {
+import androidx.compose.runtime.Composable
+import com.faltenreich.diaguard.shared.di.getViewModel
+import com.faltenreich.diaguard.tag.Tag
+import com.faltenreich.diaguard.tag.detail.TagDetail
+import org.koin.core.parameter.parametersOf
+
+data class TagDetailScreen(private val tag: Tag) : Screen {
+
+    @Composable
+    override fun Content() {
+        TagDetail(viewModel = getViewModel { parametersOf(tag) })
+    }
 }

shared/src/commonMain/kotlin/com/faltenreich/diaguard/navigation/screen/TagListScreen.kt

@@ -25,7 +25,7 @@ data object TagListScreen : Screen {
         get() = BottomAppBarStyle.Visible(
             floatingActionButton = {
                 val viewModel = getViewModel<TagListViewModel>()
-                FloatingActionButton(onClick = { viewModel.dispatchIntent(TagListIntent.Create) }) {
+                FloatingActionButton(onClick = { viewModel.dispatchIntent(TagListIntent.CreateTag) }) {
                     Icon(
                         painter = painterResource(MR.images.ic_add),
                         contentDescription = getString(MR.strings.tag_new),

shared/src/commonMain/kotlin/com/faltenreich/diaguard/tag/detail/TagDetail.kt

@@ -1,4 +1,52 @@
 package com.faltenreich.diaguard.tag.detail
 
-class TagDetail {
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.material3.Divider
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import com.faltenreich.diaguard.MR
+import com.faltenreich.diaguard.entry.list.EntryListItem
+import com.faltenreich.diaguard.shared.di.inject
+import com.faltenreich.diaguard.shared.localization.getString
+import com.faltenreich.diaguard.shared.view.FormRow
+import com.faltenreich.diaguard.shared.view.TextInput
+import com.faltenreich.diaguard.tag.EntryTag
+
+@Composable
+fun TagDetail(
+    modifier: Modifier = Modifier,
+    viewModel: TagDetailViewModel = inject(),
+) {
+    val state = viewModel.collectState()
+    var name by rememberSaveable { mutableStateOf("") }
+
+    LazyColumn(modifier = modifier) {
+        stickyHeader {
+            FormRow {
+                TextInput(
+                    input = name,
+                    onInputChange = { name = it },
+                    label = getString(MR.strings.name),
+                    modifier = Modifier.fillMaxWidth(),
+                    supportingText = { Text(state?.inputError ?: "") },
+                    isError = state?.inputError != null,
+                )
+            }
+        }
+        item { Divider() }
+        items(
+            items = state?.entryTags ?: emptyList(),
+            key = EntryTag::id,
+        ) { entryTag ->
+            EntryListItem(entry = entryTag.entry)
+            Divider()
+        }
+    }
 }

shared/src/commonMain/kotlin/com/faltenreich/diaguard/tag/detail/TagDetailState.kt

@@ -6,4 +6,5 @@ import com.faltenreich.diaguard.tag.Tag
 data class TagDetailState(
     val tag: Tag,
     val entryTags: List<EntryTag>,
+    val inputError: String?,
 )

shared/src/commonMain/kotlin/com/faltenreich/diaguard/tag/detail/TagDetailViewModel.kt

@@ -1,34 +1,57 @@
 package com.faltenreich.diaguard.tag.detail
 
+import com.faltenreich.diaguard.MR
 import com.faltenreich.diaguard.navigation.NavigateToScreenUseCase
 import com.faltenreich.diaguard.navigation.OpenModalUseCase
 import com.faltenreich.diaguard.navigation.modal.TagDeleteModal
 import com.faltenreich.diaguard.navigation.screen.EntryFormScreen
 import com.faltenreich.diaguard.shared.architecture.ViewModel
 import com.faltenreich.diaguard.shared.di.inject
+import com.faltenreich.diaguard.shared.localization.getString
+import com.faltenreich.diaguard.shared.validation.ValidateUseCase
 import com.faltenreich.diaguard.tag.Tag
+import com.faltenreich.diaguard.tag.form.RedundantTagException
+import com.faltenreich.diaguard.tag.form.UniqueTagRule
 import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.flowOf
 
 class TagDetailViewModel(
     tag: Tag,
     getEntriesOfTag: GetEntriesOfTagUseCase = inject(),
+    private val validate: ValidateUseCase = inject(),
     private val openModal: OpenModalUseCase = inject(),
     private val navigateToScreen: NavigateToScreenUseCase = inject(),
 ) : ViewModel<TagDetailState, TagDetailIntent>() {
 
+    private val error = MutableStateFlow<String?>(null)
+
     override val state: Flow<TagDetailState> = combine(
         flowOf(tag),
         getEntriesOfTag(tag),
+        error,
         ::TagDetailState,
     )
 
     override fun onIntent(intent: TagDetailIntent) {
         when (intent) {
-            is TagDetailIntent.EditTag -> Unit
+            is TagDetailIntent.EditTag -> editTagIfValid(intent.tag, intent.name)
             is TagDetailIntent.DeleteTag -> openModal(TagDeleteModal(intent.tag))
             is TagDetailIntent.OpenEntry -> navigateToScreen(EntryFormScreen(intent.entry))
         }
     }
+
+    private fun editTagIfValid(tag: Tag, name: String) {
+        val result = validate(name, UniqueTagRule())
+        if (result.isSuccess) {
+            // TODO
+            error.value = null
+        } else {
+            error.value = when (result.exceptionOrNull()) {
+                is RedundantTagException -> getString(MR.strings.tag_already_taken)
+                else -> getString(MR.strings.error_unknown)
+            }
+        }
+    }
 }

shared/src/commonMain/kotlin/com/faltenreich/diaguard/tag/form/TagFormViewState.kt → shared/src/commonMain/kotlin/com/faltenreich/diaguard/tag/form/TagFormState.kt

@@ -1,5 +1,5 @@
 package com.faltenreich.diaguard.tag.form
 
-data class TagFormViewState(
+data class TagFormState(
     val inputError: String?,
 )

shared/src/commonMain/kotlin/com/faltenreich/diaguard/tag/form/TagFormViewModel.kt

@@ -12,11 +12,11 @@ class TagFormViewModel(
     private val validate: ValidateUseCase,
     private val createTag: CreateTagUseCase,
     private val closeModal: CloseModalUseCase,
-) : ViewModel<TagFormViewState, TagFormIntent>() {
+) : ViewModel<TagFormState, TagFormIntent>() {
 
     private val error = MutableStateFlow<String?>(null)
 
-    override val state = error.map(::TagFormViewState)
+    override val state = error.map(::TagFormState)
 
     override fun onIntent(intent: TagFormIntent) {
         when (intent) {

shared/src/commonMain/kotlin/com/faltenreich/diaguard/tag/list/TagList.kt

@@ -1,5 +1,7 @@
 package com.faltenreich.diaguard.tag.list
 
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
 import androidx.compose.material3.Divider
@@ -20,8 +22,10 @@ fun TagList(
                 items(viewState.tags, key = Tag::id) { tag ->
                     TagListItem(
                         tag = tag,
-                        onDelete = { viewModel.dispatchIntent(TagListIntent.Delete(tag)) },
-                        modifier = Modifier.animateItemPlacement(),
+                        modifier = Modifier
+                            .animateItemPlacement()
+                            .fillMaxWidth()
+                            .clickable { viewModel.dispatchIntent(TagListIntent.OpenTag(tag)) },
                     )
                     Divider()
                 }

shared/src/commonMain/kotlin/com/faltenreich/diaguard/tag/list/TagListIntent.kt

@@ -4,5 +4,7 @@ import com.faltenreich.diaguard.tag.Tag
 
 sealed interface TagListIntent {
 
-    data object Create : TagListIntent
+    data object CreateTag : TagListIntent
+
+    data class OpenTag(val tag: Tag) : TagListIntent
 }

shared/src/commonMain/kotlin/com/faltenreich/diaguard/tag/list/TagListItem.kt

@@ -1,31 +1,17 @@
 package com.faltenreich.diaguard.tag.list
 
-import androidx.compose.material3.IconButton
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
-import com.faltenreich.diaguard.MR
-import com.faltenreich.diaguard.shared.localization.getString
 import com.faltenreich.diaguard.shared.view.FormRow
-import com.faltenreich.diaguard.shared.view.ResourceIcon
 import com.faltenreich.diaguard.tag.Tag
 
 @Composable
 fun TagListItem(
     tag: Tag,
-    onDelete: () -> Unit,
     modifier: Modifier = Modifier,
 ) {
     FormRow(modifier = modifier) {
-        Text(
-            text = tag.name,
-            modifier = Modifier.weight(1f),
-        )
-        IconButton(onClick = { onDelete() }) {
-            ResourceIcon(
-                imageResource = MR.images.ic_delete,
-                contentDescription = getString(MR.strings.tag_delete),
-            )
-        }
+        Text(tag.name)
     }
 }

shared/src/commonMain/kotlin/com/faltenreich/diaguard/tag/list/TagListViewModel.kt

@@ -1,23 +1,25 @@
 package com.faltenreich.diaguard.tag.list
 
+import com.faltenreich.diaguard.navigation.NavigateToScreenUseCase
 import com.faltenreich.diaguard.navigation.OpenModalUseCase
-import com.faltenreich.diaguard.navigation.modal.TagDeleteModal
 import com.faltenreich.diaguard.navigation.modal.TagFormModal
+import com.faltenreich.diaguard.navigation.screen.TagDetailScreen
 import com.faltenreich.diaguard.shared.architecture.ViewModel
 import kotlinx.coroutines.flow.map
 
 class TagListViewModel(
     getTags: GetTagsUseCase,
     private val openModal: OpenModalUseCase,
+    private val navigateToScreen: NavigateToScreenUseCase,
 ) : ViewModel<TagListViewState, TagListIntent>() {
 
     private val tags = getTags()
     override val state = tags.map(::TagListViewState)
 
     override fun onIntent(intent: TagListIntent) {
         when (intent) {
-            is TagListIntent.Create -> openModal(TagFormModal)
-            is TagListIntent.Delete -> openModal(TagDeleteModal(intent.tag))
+            is TagListIntent.CreateTag -> openModal(TagFormModal)
+            is TagListIntent.OpenTag -> navigateToScreen(TagDetailScreen(intent.tag))
         }
     }
 }