feat: network warning dialog

app/src/main/AndroidManifest.xml

@@ -2,6 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
+  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
   <uses-permission android:name="android.permission.INTERNET" />
   <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
   <uses-permission android:name="android.permission.REQUEST_DELETE_PACKAGES" />

app/src/main/kotlin/com/aliucord/manager/ui/components/dialogs/NetworkWarningDialog.kt

@@ -0,0 +1,46 @@
+package com.aliucord.manager.ui.components.dialogs
+
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Warning
+import androidx.compose.material3.*
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import com.aliucord.manager.R
+
+@Composable
+fun NetworkWarningDialog(
+    onConfirm: () -> Unit,
+    onDismiss: () -> Unit,
+) {
+    AlertDialog(
+        onDismissRequest = onDismiss,
+        confirmButton = {
+            FilledTonalButton(
+                onClick = onConfirm,
+                colors = ButtonDefaults.filledTonalButtonColors(
+                    containerColor = MaterialTheme.colorScheme.error,
+                    contentColor = MaterialTheme.colorScheme.onError,
+                ),
+            ) {
+                Text(stringResource(R.string.action_confirm))
+            }
+        },
+        dismissButton = {
+            TextButton(
+                onClick = onDismiss,
+                colors = ButtonDefaults.textButtonColors(
+                    contentColor = MaterialTheme.colorScheme.onErrorContainer
+                ),
+            ) {
+                Text(stringResource(R.string.action_cancel))
+            }
+        },
+        title = { Text(stringResource(R.string.network_warning_title)) },
+        text = { Text(stringResource(R.string.network_warning_body)) },
+        icon = { Icon(Icons.Filled.Warning, contentDescription = null) },
+        containerColor = MaterialTheme.colorScheme.errorContainer,
+        iconContentColor = MaterialTheme.colorScheme.onErrorContainer,
+        titleContentColor = MaterialTheme.colorScheme.onErrorContainer,
+        textContentColor = MaterialTheme.colorScheme.onErrorContainer,
+    )
+}

app/src/main/kotlin/com/aliucord/manager/ui/screens/home/HomeModel.kt

@@ -3,11 +3,15 @@ package com.aliucord.manager.ui.screens.home
 import android.app.Application
 import android.content.Intent
 import android.content.pm.PackageManager
+import android.net.ConnectivityManager
 import android.provider.Settings
+import android.telephony.TelephonyManager
 import android.util.Log
+import android.widget.Toast
 import androidx.compose.runtime.*
 import androidx.compose.ui.graphics.asImageBitmap
 import androidx.compose.ui.graphics.painter.BitmapPainter
+import androidx.core.content.getSystemService
 import androidx.core.graphics.drawable.toBitmap
 import androidx.core.net.toUri
 import cafe.adriel.voyager.core.model.ScreenModel
@@ -55,6 +59,41 @@ class HomeModel(
         application.startActivity(launchIntent)
     }
 
+    fun showMultiInstallToast() {
+        Toast.makeText(application, "Multi-install support is coming soon!", Toast.LENGTH_SHORT).show()
+    }
+
+    /**
+     * Check whether the device is connected on a metered WIFI connection or through any type of mobile data,
+     * to avoid unknowingly downloading a lot of stuff through a potentially metered network.
+     */
+    @Suppress("DEPRECATION")
+    fun isNetworkDangerous(): Boolean {
+        val connectivity = application.getSystemService<ConnectivityManager>()
+            ?: error("Unable to get system connectivity service")
+
+        if (connectivity.isActiveNetworkMetered) return true
+
+        when (val info = connectivity.activeNetworkInfo) {
+            null -> return false
+            else -> {
+                if (info.isRoaming) return true
+                if (info.type == ConnectivityManager.TYPE_WIFI) return false
+            }
+        }
+
+        val telephony = application.getSystemService<TelephonyManager>()
+            ?: error("Unable to get system telephony service")
+
+        val dangerousMobileDataStates = arrayOf(
+            /* TelephonyManager.DATA_DISCONNECTING */ 4,
+            TelephonyManager.DATA_CONNECTED,
+            TelephonyManager.DATA_CONNECTING,
+        )
+
+        return dangerousMobileDataStates.contains(telephony.dataState)
+    }
+
     private fun fetchInstallations() = screenModelScope.launchBlock {
         try {
             val packageManager = application.packageManager

app/src/main/kotlin/com/aliucord/manager/ui/screens/home/HomeScreen.kt

@@ -27,6 +27,7 @@ import cafe.adriel.voyager.navigator.currentOrThrow
 import com.aliucord.manager.R
 import com.aliucord.manager.ui.components.ProjectHeader
 import com.aliucord.manager.ui.components.dialogs.InstallerDialog
+import com.aliucord.manager.ui.components.dialogs.NetworkWarningDialog
 import com.aliucord.manager.ui.screens.home.components.*
 import com.aliucord.manager.ui.screens.install.InstallScreen
 import com.aliucord.manager.ui.screens.plugins.PluginsScreen
@@ -42,7 +43,33 @@ class HomeScreen : Screen {
         val navigator = LocalNavigator.currentOrThrow
         val model = getScreenModel<HomeModel>()
 
+        var showNetworkWarningDialog by remember { mutableStateOf(false) }
         var showInstallerDialog by remember { mutableStateOf(false) }
+
+        val onClickInstall: () -> Unit = remember {
+            {
+                if ((model.installations as? InstallsState.Fetched)?.data?.isNotEmpty() == false) {
+                    model.showMultiInstallToast()
+                } else if (model.isNetworkDangerous()) {
+                    showNetworkWarningDialog = true
+                } else {
+                    showInstallerDialog = true
+                }
+            }
+        }
+
+        if (showNetworkWarningDialog) {
+            NetworkWarningDialog(
+                onConfirm = {
+                    showNetworkWarningDialog = false
+                    showInstallerDialog = true
+                },
+                onDismiss = {
+                    showNetworkWarningDialog = false
+                },
+            )
+        }
+
         if (showInstallerDialog) {
             InstallerDialog(
                 onDismiss = { showInstallerDialog = false },
@@ -72,9 +99,7 @@ class HomeScreen : Screen {
 
                 item(key = "ADD_INSTALL_BUTTON") {
                     InstallButton(
-                        // TODO: install options screen to configure pkg name
-                        enabled = (model.installations as? InstallsState.Fetched)?.data?.isEmpty() ?: false,
-                        onClick = { showInstallerDialog = true },
+                        onClick = onClickInstall,
                         modifier = Modifier
                             .fillMaxWidth()
                             .padding(top = 10.dp)

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

@@ -80,6 +80,8 @@
   <string name="contributors_commit_title">§name§%1$s§ §middle§authored§ §commit§%2$s§</string>
 
   <string name="network_load_fail">Failed to load</string>
+  <string name="network_warning_title">Metered network</string>
+  <string name="network_warning_body">It appears you are connected to mobile data or a potentially metered network. In order to continue with the installation, several hundred megabytes could be downloaded. Are you sure you want to continue?</string>
 
   <string name="label_pkg_name">Package:</string>
   <string name="label_version_discord">Discord version:</string>