Add debug screen to copy backup file schema

Closes #8544

app/src/main/java/eu/kanade/presentation/more/settings/screen/debug/BackupSchemaScreen.kt

@@ -0,0 +1,78 @@
+package eu.kanade.presentation.more.settings.screen.debug
+
+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.filled.ArrowBack
+import androidx.compose.material.icons.filled.ContentCopy
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.unit.dp
+import cafe.adriel.voyager.navigator.LocalNavigator
+import cafe.adriel.voyager.navigator.currentOrThrow
+import eu.kanade.presentation.components.AppBar
+import eu.kanade.presentation.components.AppBarActions
+import eu.kanade.presentation.util.Screen
+import eu.kanade.tachiyomi.R
+import eu.kanade.tachiyomi.data.backup.models.Backup
+import eu.kanade.tachiyomi.util.system.copyToClipboard
+import kotlinx.serialization.protobuf.schema.ProtoBufSchemaGenerator
+import tachiyomi.presentation.core.components.material.Scaffold
+
+object BackupSchemaScreen : Screen() {
+
+    const val title = "Backup file schema"
+
+    @Composable
+    override fun Content() {
+        val context = LocalContext.current
+        val navigator = LocalNavigator.currentOrThrow
+
+        val schema = remember { ProtoBufSchemaGenerator.generateSchemaText(Backup.serializer().descriptor) }
+
+        Scaffold(
+            topBar = {
+                TopAppBar(
+                    title = { Text(text = title) },
+                    navigationIcon = {
+                        IconButton(onClick = navigator::pop) {
+                            Icon(imageVector = Icons.Default.ArrowBack, contentDescription = null)
+                        }
+                    },
+                    actions = {
+                        AppBarActions(
+                            listOf(
+                                AppBar.Action(
+                                    title = stringResource(R.string.action_copy_to_clipboard),
+                                    icon = Icons.Default.ContentCopy,
+                                    onClick = {
+                                        context.copyToClipboard(title, schema)
+                                    },
+                                ),
+                            ),
+                        )
+                    },
+                    scrollBehavior = it,
+                )
+            },
+        ) { contentPadding ->
+            Text(
+                text = schema,
+                modifier = Modifier
+                    .verticalScroll(rememberScrollState())
+                    .padding(contentPadding)
+                    .padding(16.dp),
+                fontFamily = FontFamily.Monospace,
+            )
+        }
+    }
+}

app/src/main/java/eu/kanade/presentation/more/settings/screen/debug/DebugInfoScreen.kt

@@ -31,6 +31,10 @@ object DebugInfoScreen : Screen() {
                         title = WorkerInfoScreen.title,
                         onClick = { navigator.push(WorkerInfoScreen) },
                     ),
+                    Preference.PreferenceItem.TextPreference(
+                        title = BackupSchemaScreen.title,
+                        onClick = { navigator.push(BackupSchemaScreen) },
+                    ),
                     getAppInfoGroup(),
                     getDeviceInfoGroup(),
                 )