feat: traceroute log (#1348)

app/src/main/java/com/geeksville/mesh/ui/components/TracerouteLog.kt

@@ -0,0 +1,162 @@
+package com.geeksville.mesh.ui.components
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.heightIn
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.text.selection.SelectionContainer
+import androidx.compose.material.Card
+import androidx.compose.material.Icon
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.Text
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Group
+import androidx.compose.material.icons.filled.Groups
+import androidx.compose.material.icons.filled.PersonOff
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+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.graphics.vector.ImageVector
+import androidx.compose.ui.res.pluralStringResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.PreviewLightDark
+import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import com.geeksville.mesh.MeshProtos
+import com.geeksville.mesh.R
+import com.geeksville.mesh.model.MetricsViewModel
+import com.geeksville.mesh.model.getTracerouteResponse
+import com.geeksville.mesh.ui.theme.AppTheme
+import java.text.DateFormat
+
+@Composable
+fun TracerouteLogScreen(
+    viewModel: MetricsViewModel = hiltViewModel(),
+    modifier: Modifier = Modifier,
+) {
+    val state by viewModel.tracerouteState.collectAsStateWithLifecycle()
+    val dateFormat = remember {
+        DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.MEDIUM)
+    }
+
+    fun getUsername(nodeNum: Int): String =
+        with(viewModel.getUser(nodeNum)) { "$longName ($shortName)" }
+
+    var showDialog by remember { mutableStateOf<String?>(null) }
+
+    if (showDialog != null) {
+        val message = showDialog ?: return
+        SimpleAlertDialog(
+            title = R.string.traceroute,
+            text = {
+                SelectionContainer {
+                    Text(text = message)
+                }
+            },
+            onDismiss = { showDialog = null }
+        )
+    }
+
+    LazyColumn(
+        modifier = modifier.fillMaxSize(),
+        contentPadding = PaddingValues(horizontal = 16.dp),
+    ) {
+        items(state.requests, key = { it.uuid }) { log ->
+            val result = remember(state.requests) {
+                state.results.find { it.decoded.requestId == log.fromRadio.packet.id }
+            }
+            val route = remember(result) {
+                result?.let { MeshProtos.RouteDiscovery.parseFrom(it.decoded.payload) }
+            }
+
+            val time = dateFormat.format(log.received_date)
+            val (text, icon) = route.getTextAndIcon()
+
+            TracerouteItem(
+                icon = icon,
+                text = "$time - $text",
+                modifier = Modifier.clickable(enabled = result != null) {
+                    if (result != null) {
+                        showDialog = result.getTracerouteResponse(::getUsername)
+                    }
+                }
+            )
+        }
+    }
+}
+
+@Composable
+private fun TracerouteItem(
+    icon: ImageVector,
+    text: String,
+    modifier: Modifier = Modifier,
+) {
+    Card(
+        modifier = modifier
+            .fillMaxWidth()
+            .heightIn(min = 56.dp)
+            .padding(vertical = 2.dp),
+        elevation = 4.dp
+    ) {
+        Row(
+            modifier = Modifier
+                .padding(horizontal = 16.dp, vertical = 8.dp),
+            verticalAlignment = Alignment.CenterVertically,
+        ) {
+            Icon(
+                imageVector = icon,
+                contentDescription = stringResource(id = R.string.traceroute)
+            )
+            Spacer(modifier = Modifier.width(8.dp))
+            Text(
+                text = text,
+                style = MaterialTheme.typography.body1,
+            )
+        }
+    }
+}
+
+@Composable
+private fun MeshProtos.RouteDiscovery?.getTextAndIcon(): Pair<String, ImageVector> = when {
+    this == null -> {
+        stringResource(R.string.routing_error_no_response) to Icons.Default.PersonOff
+    }
+
+    routeList.isEmpty() -> {
+        stringResource(R.string.traceroute_direct) to Icons.Default.Group
+    }
+
+    routeList.size == routeBackList.size -> {
+        val hops = routeList.size
+        pluralStringResource(R.plurals.traceroute_hops, hops, hops) to Icons.Default.Groups
+    }
+
+    else -> {
+        val (towards, back) = routeList.size to routeBackList.size
+        stringResource(R.string.traceroute_diff, towards, back) to Icons.Default.Groups
+    }
+}
+
+@PreviewLightDark
+@Composable
+private fun TracerouteItemPreview() {
+    val dateFormat = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.MEDIUM)
+    AppTheme {
+        TracerouteItem(
+            icon = Icons.Default.Group,
+            text = "${dateFormat.format(System.currentTimeMillis())} - Direct"
+        )
+    }
+}