Add to "Reset hints"

- Implement BackupsPage composable with UI elements
- Add strings for backups reminder and acceptance

app/src/main/kotlin/at/bitfire/davdroid/ui/AppSettingsModel.kt

@@ -20,6 +20,7 @@ import at.bitfire.davdroid.repository.PreferenceRepository
 import at.bitfire.davdroid.settings.Settings
 import at.bitfire.davdroid.settings.SettingsManager
 import at.bitfire.davdroid.sync.TasksAppManager
+import at.bitfire.davdroid.ui.intro.BackupsPage
 import at.bitfire.davdroid.ui.intro.BatteryOptimizationsPageModel
 import at.bitfire.davdroid.ui.intro.OpenSourcePage
 import at.bitfire.davdroid.util.PermissionUtils
@@ -102,6 +103,7 @@ class AppSettingsModel @Inject constructor(
         settings.remove(BatteryOptimizationsPageModel.HINT_BATTERY_OPTIMIZATIONS)
         settings.remove(BatteryOptimizationsPageModel.HINT_AUTOSTART_PERMISSION)
         settings.remove(TasksModel.HINT_OPENTASKS_NOT_INSTALLED)
+        settings.remove(BackupsPage.Model.SETTING_BACKUPS_ACCEPTED)
         settings.remove(OpenSourcePage.Model.SETTING_NEXT_DONATION_POPUP)
     }
 

app/src/main/kotlin/at/bitfire/davdroid/ui/intro/BackupsPage.kt

@@ -0,0 +1,135 @@
+/*
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ */
+
+package at.bitfire.davdroid.ui.intro
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.outlined.Backup
+import androidx.compose.material3.Checkbox
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.hilt.lifecycle.viewmodel.compose.hiltViewModel
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import at.bitfire.davdroid.R
+import at.bitfire.davdroid.settings.SettingsManager
+import at.bitfire.davdroid.ui.AppTheme
+import at.bitfire.davdroid.ui.composable.CardWithImage
+import dagger.hilt.android.lifecycle.HiltViewModel
+import javax.inject.Inject
+
+class BackupsPage @Inject constructor(
+    val settingsManager: SettingsManager
+): IntroPage() {
+
+    override fun getShowPolicy(): ShowPolicy =
+        if (Model.backupsAccepted(settingsManager))
+            ShowPolicy.DONT_SHOW
+        else
+            ShowPolicy.SHOW_ALWAYS
+
+    @Composable
+    override fun ComposePage() {
+        val model = hiltViewModel<Model>()
+        val accepted by model.backupsAcceptedFlow.collectAsStateWithLifecycle(false)
+        BackupsPage(
+            accepted = accepted,
+            updateAccepted = model::setBackupsAccepted
+        )
+    }
+
+
+    @HiltViewModel
+    class Model @Inject constructor(
+        private val settings: SettingsManager
+    ): ViewModel() {
+
+        val backupsAcceptedFlow = settings.getBooleanFlow(SETTING_BACKUPS_ACCEPTED, false)
+
+        fun setBackupsAccepted(accepted: Boolean) {
+            settings.putBoolean(SETTING_BACKUPS_ACCEPTED, accepted)
+        }
+
+        companion object {
+
+            /** boolean setting (default: false) */
+            const val SETTING_BACKUPS_ACCEPTED = "intro_backups_accepted"
+
+            fun backupsAccepted(settingsManager: SettingsManager): Boolean =
+                settingsManager.getBooleanOrNull(SETTING_BACKUPS_ACCEPTED) ?: false
+
+        }
+
+    }
+
+}
+
+@Composable
+fun BackupsPage(
+    accepted: Boolean,
+    updateAccepted: (Boolean) -> Unit
+) {
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .verticalScroll(rememberScrollState())
+            .padding(8.dp)
+    ) {
+        CardWithImage(
+            title = stringResource(R.string.intro_backups_title),
+            icon = Icons.Outlined.Backup,
+            modifier = Modifier.padding(vertical = 8.dp)
+        ) {
+            Text(
+                text = stringResource(R.string.intro_backups_important),
+                modifier = Modifier.padding(bottom = 8.dp)
+            )
+            Text(
+                text = stringResource(R.string.intro_backups_no_versioning, stringResource(R.string.app_name)),
+            )
+
+            Row(
+                verticalAlignment = Alignment.CenterVertically,
+                modifier = Modifier.padding(top = 8.dp, bottom = 16.dp)
+            ) {
+                Checkbox(
+                    checked = accepted,
+                    onCheckedChange = updateAccepted
+                )
+                Text(
+                    text = stringResource(R.string.intro_backups_accept),
+                    style = MaterialTheme.typography.bodyLarge,
+                    modifier = Modifier
+                        .clickable { updateAccepted(!accepted) }
+                        .padding(start = 8.dp)
+                )
+            }
+        }
+    }
+}
+
+@Preview
+@Composable
+fun BackupsPagePreview() {
+    AppTheme {
+        BackupsPage(
+            accepted = true,
+            updateAccepted = {}
+        )
+    }
+}

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

@@ -58,6 +58,10 @@
     <string name="intro_tasks_tasks_org_info"><![CDATA[Some features <a href="https://www.davx5.com/faq/tasks/advanced-task-features">are not supported</a>.]]></string>
     <string name="intro_tasks_no_app_store">No app store available</string>
     <string name="intro_tasks_dont_show">I don\'t need tasks support.*</string>
+    <string name="intro_backups_title">Backups reminder</string>
+    <string name="intro_backups_important">It\'s important to back up your data (including contacts and calendars) regularly to prevent potential data loss.</string>
+    <string name="intro_backups_no_versioning">%s synchronizes changes and deletions but does NOT function as a backup tool or provide version history.</string>
+    <string name="intro_backups_accept">I already have a backup solution in place or I don\'t need one.</string>
     <string name="intro_open_source_title">Open-source software</string>
     <string name="intro_open_source_text">We\'re happy that you use %s, which is open-source software. Development, maintenance and support are hard work. Please consider contributing (there are many ways) or a donation. It would be highly appreciated!</string>
     <string name="intro_open_source_details">How to contribute/donate</string>

app/src/ose/kotlin/at/bitfire/davdroid/ui/intro/OseIntroPageFactory.kt

@@ -7,6 +7,7 @@ package at.bitfire.davdroid.ui.intro
 import javax.inject.Inject
 
 class OseIntroPageFactory @Inject constructor(
+    backupsPage: BackupsPage,
     batteryOptimizationsPage: BatteryOptimizationsPage,
     openSourcePage: OpenSourcePage,
     permissionsIntroPage: PermissionsIntroPage,
@@ -18,6 +19,7 @@ class OseIntroPageFactory @Inject constructor(
         tasksIntroPage,
         permissionsIntroPage,
         batteryOptimizationsPage,
+        backupsPage,
         openSourcePage
     )