feat(Sensors): Add search filter to sensor setting allow list dialog

app/src/main/kotlin/io/homeassistant/companion/android/settings/sensor/views/SensorDetailSettingSheet.kt

@@ -0,0 +1,316 @@
+package io.homeassistant.companion.android.settings.sensor.views
+
+import androidx.annotation.VisibleForTesting
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.gestures.detectVerticalDragGestures
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.heightIn
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Search
+import androidx.compose.material3.Checkbox
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.input.nestedscroll.NestedScrollConnection
+import androidx.compose.ui.input.nestedscroll.NestedScrollSource
+import androidx.compose.ui.input.nestedscroll.nestedScroll
+import androidx.compose.ui.input.pointer.pointerInput
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.Velocity
+import io.homeassistant.companion.android.common.R as commonR
+import io.homeassistant.companion.android.common.compose.composable.HAFilledButton
+import io.homeassistant.companion.android.common.compose.composable.HAModalBottomSheet
+import io.homeassistant.companion.android.common.compose.composable.HAPlainButton
+import io.homeassistant.companion.android.common.compose.composable.HASearchField
+import io.homeassistant.companion.android.common.compose.composable.rememberHAModalBottomSheetState
+import io.homeassistant.companion.android.common.compose.theme.HADimens
+import io.homeassistant.companion.android.common.compose.theme.HATextStyle
+import io.homeassistant.companion.android.common.compose.theme.LocalHAColorScheme
+import io.homeassistant.companion.android.settings.sensor.SensorDetailViewModel
+import io.homeassistant.companion.android.util.compose.safeScreenHeight
+import kotlin.coroutines.CoroutineContext
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+
+/** Threshold above which the search field becomes visible to help users navigate long lists. */
+private const val SEARCH_VISIBILITY_THRESHOLD = 10
+
+/**
+ * Bottom sheet for multi-select allow list sensor settings (apps, bluetooth, zones, beacons).
+ *
+ * Renders a search field (when the entry list exceeds [SEARCH_VISIBILITY_THRESHOLD]), a scrollable
+ * list of selectable rows, and a fixed footer with cancel and save actions. While the selection
+ * state is loading, a centered progress indicator is shown instead of the list.
+ *
+ * Filtering is performed off the UI thread on [dispatcher] to keep the sheet responsive on long
+ * lists. The search field debounces the query so the list does not re-filter on every keystroke.
+ *
+ * @param title Heading displayed at the top of the sheet.
+ * @param state Current dialog state holding the entries, selection and loading flag.
+ * @param onDismiss Invoked when the sheet is dismissed without saving.
+ * @param onSave Invoked with the updated state when the user confirms the selection.
+ * @param modifier Optional [Modifier] applied to the sheet container.
+ * @param dispatcher Coroutine context used to compute the filtered entries; injectable for tests.
+ */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+internal fun SensorDetailSettingSheet(
+    title: String,
+    state: SensorDetailViewModel.Companion.SettingDialogState,
+    onDismiss: () -> Unit,
+    onSave: (SensorDetailViewModel.Companion.SettingDialogState) -> Unit,
+    modifier: Modifier = Modifier,
+    dispatcher: CoroutineContext = Dispatchers.Default,
+) {
+    val checkedValue = remember {
+        mutableStateListOf<String>().also { it.addAll(state.entriesSelected) }
+    }
+    var searchQuery by remember { mutableStateOf("") }
+    val filteredEntries = rememberFilteredSettingEntries(
+        entries = state.entries,
+        searchQuery = searchQuery,
+        dispatcher = dispatcher,
+    )
+    val showSearch = state.entries.size > SEARCH_VISIBILITY_THRESHOLD
+
+    val bottomSheetState = rememberHAModalBottomSheetState(skipPartiallyExpanded = true)
+    val screenHeight = safeScreenHeight() - HADimens.SPACE16
+
+    val nestedScrollFlingGuard = remember { nestedScrollFlingGuard() }
+
+    HAModalBottomSheet(
+        bottomSheetState = bottomSheetState,
+        modifier = modifier,
+        onDismissRequest = onDismiss,
+    ) {
+        Column(
+            modifier = Modifier
+                .height(screenHeight)
+                .nestedScroll(nestedScrollFlingGuard)
+                .pointerInput(Unit) {
+                    // Consume vertical drag gestures to prevent BottomSheet from interpreting them
+                    // as collapse gestures while the user scrolls the entry list.
+                    detectVerticalDragGestures { _, _ -> }
+                },
+        ) {
+            Text(
+                text = title,
+                style = HATextStyle.HeadlineMedium.copy(textAlign = TextAlign.Start),
+                modifier = Modifier.padding(
+                    horizontal = HADimens.SPACE4,
+                    vertical = HADimens.SPACE3,
+                ),
+            )
+            if (showSearch) {
+                HASearchField(
+                    query = searchQuery,
+                    onQueryChange = { searchQuery = it },
+                    leadingIcon = {
+                        Icon(
+                            imageVector = Icons.Default.Search,
+                            contentDescription = null,
+                            tint = LocalHAColorScheme.current.colorOnNeutralNormal,
+                        )
+                    },
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(horizontal = HADimens.SPACE4),
+                )
+            }
+            Box(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .weight(1f),
+                contentAlignment = Alignment.Center,
+            ) {
+                if (state.loading) {
+                    CircularProgressIndicator()
+                } else {
+                    LazyColumn(modifier = Modifier.fillMaxWidth()) {
+                        items(filteredEntries, key = { (id) -> id }) { (id, entry) ->
+                            BottomSheetSettingRow(
+                                label = entry,
+                                checked = checkedValue.contains(id),
+                                onClick = { isChecked ->
+                                    if (isChecked) {
+                                        if (id !in checkedValue) checkedValue.add(id)
+                                    } else {
+                                        checkedValue.remove(id)
+                                    }
+                                },
+                            )
+                        }
+                    }
+                }
+            }
+            Row(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(horizontal = HADimens.SPACE4, vertical = HADimens.SPACE3),
+                horizontalArrangement = Arrangement.End,
+            ) {
+                HAPlainButton(
+                    text = stringResource(commonR.string.cancel),
+                    onClick = onDismiss,
+                )
+                Spacer(modifier = Modifier.width(HADimens.SPACE2))
+                HAFilledButton(
+                    text = stringResource(commonR.string.save),
+                    enabled = !state.loading,
+                    onClick = {
+                        val joinedValue = joinSelectedValues(checkedValue)
+                        onSave(state.copy(setting = state.setting.copy(value = joinedValue)))
+                    },
+                )
+            }
+        }
+    }
+}
+
+/**
+ * Computes the filtered entries off the UI thread.
+ *
+ * Re-runs whenever [entries] or [searchQuery] change, dispatching the filter work onto
+ * [dispatcher] so long lists do not freeze the sheet.
+ */
+@Composable
+private fun rememberFilteredSettingEntries(
+    entries: List<Pair<String, String>>,
+    searchQuery: String,
+    dispatcher: CoroutineContext = Dispatchers.Default,
+): List<Pair<String, String>> {
+    var filtered by remember(entries) { mutableStateOf(entries) }
+
+    LaunchedEffect(entries, searchQuery) {
+        filtered = withContext(dispatcher) {
+            filterSettingEntries(entries, searchQuery)
+        }
+    }
+
+    return filtered
+}
+
+/**
+ * Filters setting entries by matching the query against entry labels (case-insensitive).
+ * Returns all entries when the query is blank.
+ */
+@VisibleForTesting
+internal fun filterSettingEntries(entries: List<Pair<String, String>>, query: String): List<Pair<String, String>> {
+    val trimmed = query.trim()
+    return if (trimmed.isBlank()) {
+        entries
+    } else {
+        entries.filter { (_, label) -> label.contains(trimmed, ignoreCase = true) }
+    }
+}
+
+/**
+ * Joins selected entry IDs into the comma-separated string format expected by [SensorDetailViewModel].
+ *
+ * Mirrors the legacy formatting used elsewhere in the sensor settings code, removing list bracket
+ * artifacts that originate from older Java-style toString conversions.
+ */
+internal fun joinSelectedValues(values: List<String>): String {
+    return values.joinToString().replace("[", "").replace("]", "")
+}
+
+/**
+ * Splits a sensor setting label into a primary line and an optional secondary line.
+ *
+ * Sensor allow-list entries are formatted as `"<primary>\n(<secondary>)"` where the secondary
+ * line is wrapped in parentheses (for example `"Chrome\n(com.google.chrome)"`). Only the first
+ * newline is used to separate the two parts; any further newlines remain inside the secondary
+ * value. Surrounding parentheses are stripped from the secondary value when, and only when, both
+ * the leading `(` and trailing `)` are present, matching [String.removeSurrounding] semantics.
+ *
+ * @return a pair of `(primary, secondary)` where `secondary` is `null` for single-line labels.
+ */
+@VisibleForTesting
+internal fun parseSettingLabel(label: String): Pair<String, String?> {
+    val parts = label.split("\n", limit = 2)
+    val primaryText = parts[0]
+    val secondaryText = parts.getOrNull(1)?.removeSurrounding("(", ")")
+    return primaryText to secondaryText
+}
+
+/**
+ * Returns a [NestedScrollConnection] that absorbs fling velocity and post-scroll offsets to prevent
+ * the bottom sheet from collapsing while the user scrolls or flings the entry list.
+ */
+private fun nestedScrollFlingGuard(): NestedScrollConnection {
+    return object : NestedScrollConnection {
+        override fun onPostScroll(consumed: Offset, available: Offset, source: NestedScrollSource): Offset = available
+
+        override suspend fun onPostFling(consumed: Velocity, available: Velocity): Velocity = available
+    }
+}
+
+/**
+ * Single selectable row used inside [SensorDetailSettingSheet]. Built with Material 3 components and
+ * the project's design tokens; intentionally separate from [SensorDetailSettingRow] used by the
+ * legacy Material 2 dialog.
+ */
+@Composable
+private fun BottomSheetSettingRow(
+    label: String,
+    checked: Boolean,
+    onClick: (Boolean) -> Unit,
+    modifier: Modifier = Modifier,
+) {
+    val (primaryText, secondaryText) = parseSettingLabel(label)
+    val colorScheme = LocalHAColorScheme.current
+
+    Row(
+        modifier = modifier
+            .fillMaxWidth()
+            .clickable { onClick(!checked) }
+            .padding(horizontal = HADimens.SPACE3)
+            .heightIn(min = HADimens.SPACE16),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        Checkbox(
+            checked = checked,
+            onCheckedChange = null,
+            modifier = Modifier.size(width = HADimens.SPACE12, height = HADimens.SPACE12),
+        )
+        Column(modifier = Modifier.weight(1f)) {
+            Text(
+                text = primaryText,
+                style = HATextStyle.Body.copy(
+                    textAlign = TextAlign.Start,
+                    color = colorScheme.colorTextPrimary,
+                ),
+            )
+            if (secondaryText != null) {
+                Spacer(Modifier.height(HADimens.SPACE1))
+                Text(
+                    text = secondaryText,
+                    style = HATextStyle.BodyMedium.copy(textAlign = TextAlign.Start),
+                )
+            }
+        }
+    }
+}