Add migration config screen to select and prioritize target sources (#2144)

app/src/main/java/eu/kanade/domain/source/service/SourcePreferences.kt

@@ -5,6 +5,7 @@ import eu.kanade.tachiyomi.util.system.LocaleHelper
 import tachiyomi.core.common.preference.Preference
 import tachiyomi.core.common.preference.PreferenceStore
 import tachiyomi.core.common.preference.getEnum
+import tachiyomi.core.common.preference.getLongArray
 import tachiyomi.domain.library.model.LibraryDisplayMode
 
 class SourcePreferences(
@@ -20,6 +21,8 @@ class SourcePreferences(
 
     fun enabledLanguages() = preferenceStore.getStringSet("source_languages", LocaleHelper.getDefaultEnabledLanguages())
 
+    fun migrationSources() = preferenceStore.getLongArray("migration_sources", emptyList())
+
     fun disabledSources() = preferenceStore.getStringSet("hidden_catalogues", emptySet())
 
     fun incognitoExtensions() = preferenceStore.getStringSet("incognito_extensions", emptySet())

app/src/main/java/eu/kanade/presentation/browse/GlobalSearchScreen.kt

@@ -40,6 +40,7 @@ fun GlobalSearchScreen(
                 navigateUp = navigateUp,
                 onChangeSearchQuery = onChangeSearchQuery,
                 onSearch = onSearch,
+                hideSourceFilter = false,
                 sourceFilter = state.sourceFilter,
                 onChangeSearchFilter = onChangeSearchFilter,
                 onlyShowHasResults = state.onlyShowHasResults,

app/src/main/java/eu/kanade/presentation/browse/MigrateSearchScreen.kt

@@ -32,6 +32,7 @@ fun MigrateSearchScreen(
                 navigateUp = navigateUp,
                 onChangeSearchQuery = onChangeSearchQuery,
                 onSearch = onSearch,
+                hideSourceFilter = true,
                 sourceFilter = state.sourceFilter,
                 onChangeSearchFilter = onChangeSearchFilter,
                 onlyShowHasResults = state.onlyShowHasResults,

app/src/main/java/eu/kanade/presentation/browse/components/GlobalSearchToolbar.kt

@@ -40,6 +40,7 @@ fun GlobalSearchToolbar(
     navigateUp: () -> Unit,
     onChangeSearchQuery: (String?) -> Unit,
     onSearch: (String) -> Unit,
+    hideSourceFilter: Boolean,
     sourceFilter: SourceFilter,
     onChangeSearchFilter: (SourceFilter) -> Unit,
     onlyShowHasResults: Boolean,
@@ -73,38 +74,40 @@ fun GlobalSearchToolbar(
             horizontalArrangement = Arrangement.spacedBy(MaterialTheme.padding.small),
         ) {
             // TODO: make this UX better; it only applies when triggering a new search
-            FilterChip(
-                selected = sourceFilter == SourceFilter.PinnedOnly,
-                onClick = { onChangeSearchFilter(SourceFilter.PinnedOnly) },
-                leadingIcon = {
-                    Icon(
-                        imageVector = Icons.Outlined.PushPin,
-                        contentDescription = null,
-                        modifier = Modifier
-                            .size(FilterChipDefaults.IconSize),
-                    )
-                },
-                label = {
-                    Text(text = stringResource(MR.strings.pinned_sources))
-                },
-            )
-            FilterChip(
-                selected = sourceFilter == SourceFilter.All,
-                onClick = { onChangeSearchFilter(SourceFilter.All) },
-                leadingIcon = {
-                    Icon(
-                        imageVector = Icons.Outlined.DoneAll,
-                        contentDescription = null,
-                        modifier = Modifier
-                            .size(FilterChipDefaults.IconSize),
-                    )
-                },
-                label = {
-                    Text(text = stringResource(MR.strings.all))
-                },
-            )
+            if (!hideSourceFilter) {
+                FilterChip(
+                    selected = sourceFilter == SourceFilter.PinnedOnly,
+                    onClick = { onChangeSearchFilter(SourceFilter.PinnedOnly) },
+                    leadingIcon = {
+                        Icon(
+                            imageVector = Icons.Outlined.PushPin,
+                            contentDescription = null,
+                            modifier = Modifier
+                                .size(FilterChipDefaults.IconSize),
+                        )
+                    },
+                    label = {
+                        Text(text = stringResource(MR.strings.pinned_sources))
+                    },
+                )
+                FilterChip(
+                    selected = sourceFilter == SourceFilter.All,
+                    onClick = { onChangeSearchFilter(SourceFilter.All) },
+                    leadingIcon = {
+                        Icon(
+                            imageVector = Icons.Outlined.DoneAll,
+                            contentDescription = null,
+                            modifier = Modifier
+                                .size(FilterChipDefaults.IconSize),
+                        )
+                    },
+                    label = {
+                        Text(text = stringResource(MR.strings.all))
+                    },
+                )
 
-            VerticalDivider()
+                VerticalDivider()
+            }
 
             FilterChip(
                 selected = onlyShowHasResults,

app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/manga/MigrateMangaScreen.kt

@@ -10,10 +10,10 @@ import cafe.adriel.voyager.navigator.LocalNavigator
 import cafe.adriel.voyager.navigator.currentOrThrow
 import eu.kanade.presentation.browse.MigrateMangaScreen
 import eu.kanade.presentation.util.Screen
-import eu.kanade.tachiyomi.ui.browse.migration.search.MigrateSearchScreen
 import eu.kanade.tachiyomi.ui.manga.MangaScreen
 import eu.kanade.tachiyomi.util.system.toast
 import kotlinx.coroutines.flow.collectLatest
+import mihon.feature.migration.MigrateMangaConfigScreen
 import tachiyomi.i18n.MR
 import tachiyomi.presentation.core.screens.LoadingScreen
 
@@ -38,7 +38,7 @@ data class MigrateMangaScreen(
             navigateUp = navigator::pop,
             title = state.source!!.name,
             state = state,
-            onClickItem = { navigator.push(MigrateSearchScreen(it.id)) },
+            onClickItem = { navigator.push(MigrateMangaConfigScreen(it.id)) },
             onClickCover = { navigator.push(MangaScreen(it.id)) },
         )
 

app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/search/MigrateSearchScreenModel.kt

@@ -1,20 +1,33 @@
 package eu.kanade.tachiyomi.ui.browse.migration.search
 
 import cafe.adriel.voyager.core.model.screenModelScope
+import eu.kanade.domain.source.service.SourcePreferences
 import eu.kanade.tachiyomi.source.CatalogueSource
+import eu.kanade.tachiyomi.ui.browse.source.globalsearch.SearchItemResult
 import eu.kanade.tachiyomi.ui.browse.source.globalsearch.SearchScreenModel
-import eu.kanade.tachiyomi.ui.browse.source.globalsearch.SourceFilter
 import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.launch
 import tachiyomi.domain.manga.interactor.GetManga
+import tachiyomi.domain.source.service.SourceManager
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
 
 class MigrateSearchScreenModel(
     val mangaId: Long,
     getManga: GetManga = Injekt.get(),
+    private val sourceManager: SourceManager = Injekt.get(),
+    private val sourcePreferences: SourcePreferences = Injekt.get(),
 ) : SearchScreenModel() {
 
+    private val migrationSources by lazy { sourcePreferences.migrationSources().get() }
+
+    override val sortComparator = { map: Map<CatalogueSource, SearchItemResult> ->
+        compareBy<CatalogueSource>(
+            { (map[it] as? SearchItemResult.Success)?.isEmpty ?: true },
+            { migrationSources.indexOf(it.id) },
+        )
+    }
+
     init {
         screenModelScope.launch {
             val manga = getManga.await(mangaId)!!
@@ -29,14 +42,6 @@ class MigrateSearchScreenModel(
     }
 
     override fun getEnabledSources(): List<CatalogueSource> {
-        return super.getEnabledSources()
-            .filter { state.value.sourceFilter != SourceFilter.PinnedOnly || "${it.id}" in pinnedSources }
-            .sortedWith(
-                compareBy(
-                    { it.id != state.value.fromSourceId },
-                    { "${it.id}" !in pinnedSources },
-                    { "${it.name.lowercase()} (${it.lang})" },
-                ),
-            )
+        return migrationSources.mapNotNull { sourceManager.get(it) as? CatalogueSource }
     }
 }

app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/globalsearch/SearchScreenModel.kt

@@ -55,7 +55,7 @@ abstract class SearchScreenModel(
 
     protected var extensionFilter: String? = null
 
-    private val sortComparator = { map: Map<CatalogueSource, SearchItemResult> ->
+    open val sortComparator = { map: Map<CatalogueSource, SearchItemResult> ->
         compareBy<CatalogueSource>(
             { (map[it] as? SearchItemResult.Success)?.isEmpty ?: true },
             { "${it.id}" !in pinnedSources },

app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaScreen.kt

@@ -45,7 +45,6 @@ import eu.kanade.tachiyomi.source.isLocalOrStub
 import eu.kanade.tachiyomi.source.online.HttpSource
 import eu.kanade.tachiyomi.ui.browse.migration.search.MigrateDialog
 import eu.kanade.tachiyomi.ui.browse.migration.search.MigrateDialogScreenModel
-import eu.kanade.tachiyomi.ui.browse.migration.search.MigrateSearchScreen
 import eu.kanade.tachiyomi.ui.browse.source.browse.BrowseSourceScreen
 import eu.kanade.tachiyomi.ui.browse.source.globalsearch.GlobalSearchScreen
 import eu.kanade.tachiyomi.ui.category.CategoryScreen
@@ -60,6 +59,7 @@ import eu.kanade.tachiyomi.util.system.toShareIntent
 import eu.kanade.tachiyomi.util.system.toast
 import kotlinx.coroutines.launch
 import logcat.LogPriority
+import mihon.feature.migration.MigrateMangaConfigScreen
 import tachiyomi.core.common.i18n.stringResource
 import tachiyomi.core.common.util.lang.withIOContext
 import tachiyomi.core.common.util.system.logcat
@@ -163,7 +163,7 @@ class MangaScreen(
                 successState.manga.favorite
             },
             onMigrateClicked = {
-                navigator.push(MigrateSearchScreen(successState.manga.id))
+                navigator.push(MigrateMangaConfigScreen(successState.manga.id))
             }.takeIf { successState.manga.favorite },
             onEditNotesClicked = { navigator.push(MangaNotesScreen(manga = successState.manga)) },
             onMultiBookmarkClicked = screenModel::bookmarkChapters,

app/src/main/java/mihon/feature/migration/MigrateMangaConfigScreen.kt

@@ -0,0 +1,396 @@
+package mihon.feature.migration
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.lazy.LazyItemScope
+import androidx.compose.foundation.lazy.itemsIndexed
+import androidx.compose.foundation.lazy.rememberLazyListState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.outlined.ArrowForward
+import androidx.compose.material.icons.outlined.Deselect
+import androidx.compose.material.icons.outlined.DragHandle
+import androidx.compose.material.icons.outlined.SelectAll
+import androidx.compose.material3.ElevatedCard
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.Icon
+import androidx.compose.material3.ListItem
+import androidx.compose.material3.ListItemDefaults
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.alpha
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.util.fastForEachIndexed
+import cafe.adriel.voyager.core.model.StateScreenModel
+import cafe.adriel.voyager.core.model.rememberScreenModel
+import cafe.adriel.voyager.core.model.screenModelScope
+import cafe.adriel.voyager.navigator.LocalNavigator
+import cafe.adriel.voyager.navigator.currentOrThrow
+import eu.kanade.domain.source.service.SourcePreferences
+import eu.kanade.presentation.browse.components.SourceIcon
+import eu.kanade.presentation.components.AppBar
+import eu.kanade.presentation.components.AppBarActions
+import eu.kanade.presentation.util.Screen
+import eu.kanade.tachiyomi.source.online.HttpSource
+import eu.kanade.tachiyomi.ui.browse.migration.search.MigrateSearchScreen
+import eu.kanade.tachiyomi.util.system.LocaleHelper
+import kotlinx.collections.immutable.persistentListOf
+import kotlinx.coroutines.flow.updateAndGet
+import sh.calvin.reorderable.ReorderableCollectionItemScope
+import sh.calvin.reorderable.ReorderableItem
+import sh.calvin.reorderable.ReorderableLazyListState
+import sh.calvin.reorderable.rememberReorderableLazyListState
+import tachiyomi.core.common.util.lang.launchIO
+import tachiyomi.domain.source.model.Source
+import tachiyomi.domain.source.service.SourceManager
+import tachiyomi.i18n.MR
+import tachiyomi.presentation.core.components.FastScrollLazyColumn
+import tachiyomi.presentation.core.components.Pill
+import tachiyomi.presentation.core.components.material.DISABLED_ALPHA
+import tachiyomi.presentation.core.components.material.ExtendedFloatingActionButton
+import tachiyomi.presentation.core.components.material.Scaffold
+import tachiyomi.presentation.core.components.material.padding
+import tachiyomi.presentation.core.i18n.stringResource
+import tachiyomi.presentation.core.util.shouldExpandFAB
+import uy.kohesive.injekt.Injekt
+import uy.kohesive.injekt.api.get
+
+class MigrateMangaConfigScreen(private val mangaId: Long) : Screen() {
+
+    @Composable
+    override fun Content() {
+        val navigator = LocalNavigator.currentOrThrow
+        val screenModel = rememberScreenModel { ScreenModel() }
+        val state by screenModel.state.collectAsState()
+        val (selectedSources, availableSources) = state.sources.partition { it.isSelected }
+        val showLanguage by remember(state) {
+            derivedStateOf {
+                state.sources.distinctBy { it.source.lang }.size > 1
+            }
+        }
+
+        val lazyListState = rememberLazyListState()
+        Scaffold(
+            topBar = {
+                AppBar(
+                    title = null,
+                    navigateUp = navigator::pop,
+                    scrollBehavior = it,
+                    actions = {
+                        AppBarActions(
+                            persistentListOf(
+                                AppBar.Action(
+                                    title = stringResource(MR.strings.migrationConfigScreen_selectAllLabel),
+                                    icon = Icons.Outlined.SelectAll,
+                                    onClick = { screenModel.toggleSelection(ScreenModel.SelectionConfig.All) },
+                                ),
+                                AppBar.Action(
+                                    title = stringResource(MR.strings.migrationConfigScreen_selectNoneLabel),
+                                    icon = Icons.Outlined.Deselect,
+                                    onClick = { screenModel.toggleSelection(ScreenModel.SelectionConfig.None) },
+                                ),
+                                AppBar.OverflowAction(
+                                    title = stringResource(MR.strings.migrationConfigScreen_selectEnabledLabel),
+                                    onClick = { screenModel.toggleSelection(ScreenModel.SelectionConfig.Enabled) },
+                                ),
+                                AppBar.OverflowAction(
+                                    title = stringResource(MR.strings.migrationConfigScreen_selectPinnedLabel),
+                                    onClick = { screenModel.toggleSelection(ScreenModel.SelectionConfig.Pinned) },
+                                ),
+                            ),
+                        )
+                    },
+                )
+            },
+            floatingActionButton = {
+                ExtendedFloatingActionButton(
+                    text = { Text(text = stringResource(MR.strings.migrationConfigScreen_continueButtonText)) },
+                    icon = { Icon(imageVector = Icons.AutoMirrored.Outlined.ArrowForward, contentDescription = null) },
+                    onClick = { navigator.replace(MigrateSearchScreen(mangaId)) },
+                    expanded = lazyListState.shouldExpandFAB(),
+                )
+            },
+        ) { contentPadding ->
+            val reorderableState = rememberReorderableLazyListState(lazyListState, contentPadding) { from, to ->
+                val fromIndex = selectedSources.indexOfFirst { it.id == from.key }
+                val toIndex = selectedSources.indexOfFirst { it.id == to.key }
+                if (fromIndex == -1 || toIndex == -1) return@rememberReorderableLazyListState
+                screenModel.orderSource(fromIndex, toIndex)
+            }
+
+            FastScrollLazyColumn(
+                modifier = Modifier.fillMaxSize(),
+                state = lazyListState,
+                contentPadding = contentPadding,
+            ) {
+                listOf(selectedSources, availableSources).fastForEachIndexed { listIndex, sources ->
+                    val selectedSourceList = listIndex == 0
+                    if (sources.isNotEmpty()) {
+                        val headerPrefix = if (selectedSourceList) "selected" else "available"
+                        item("$headerPrefix-header") {
+                            Text(
+                                text = stringResource(
+                                    resource = if (selectedSourceList) {
+                                        MR.strings.migrationConfigScreen_selectedHeader
+                                    } else {
+                                        MR.strings.migrationConfigScreen_availableHeader
+                                    },
+                                ),
+                                style = MaterialTheme.typography.bodyMedium,
+                                modifier = Modifier
+                                    .padding(MaterialTheme.padding.medium)
+                                    .animateItem(),
+                            )
+                        }
+                    }
+                    itemsIndexed(
+                        items = sources,
+                        key = { _, item -> item.id },
+                    ) { index, item ->
+                        SourceItemContainer(
+                            firstItem = index == 0,
+                            lastItem = index == (sources.size - 1),
+                            source = item.source,
+                            showLanguage = showLanguage,
+                            isSelected = item.isSelected,
+                            dragEnabled = selectedSourceList && sources.size > 1,
+                            state = reorderableState,
+                            key = { if (selectedSourceList) it.id else "available-${it.id}" },
+                            onClick = { screenModel.toggleSelection(item.id) },
+                        )
+                    }
+                }
+            }
+        }
+    }
+
+    @Composable
+    private fun LazyItemScope.SourceItemContainer(
+        firstItem: Boolean,
+        lastItem: Boolean,
+        source: Source,
+        showLanguage: Boolean,
+        isSelected: Boolean,
+        dragEnabled: Boolean,
+        state: ReorderableLazyListState,
+        key: (Source) -> Any,
+        onClick: () -> Unit,
+    ) {
+        val shape = remember(firstItem, lastItem) {
+            val top = if (firstItem) 12.dp else 0.dp
+            val bottom = if (lastItem) 12.dp else 0.dp
+            RoundedCornerShape(top, top, bottom, bottom)
+        }
+
+        ReorderableItem(
+            state = state,
+            key = key(source),
+            enabled = dragEnabled,
+        ) { _ ->
+            ElevatedCard(
+                shape = shape,
+                modifier = Modifier
+                    .padding(horizontal = MaterialTheme.padding.medium)
+                    .animateItem(),
+            ) {
+                SourceItem(
+                    source = source,
+                    showLanguage = showLanguage,
+                    isSelected = isSelected,
+                    dragEnabled = dragEnabled,
+                    scope = this@ReorderableItem,
+                    onClick = onClick,
+                )
+            }
+        }
+
+        if (!lastItem) {
+            HorizontalDivider(modifier = Modifier.padding(horizontal = MaterialTheme.padding.medium))
+        }
+    }
+
+    @Composable
+    private fun SourceItem(
+        source: Source,
+        showLanguage: Boolean,
+        isSelected: Boolean,
+        dragEnabled: Boolean,
+        scope: ReorderableCollectionItemScope,
+        onClick: () -> Unit,
+    ) {
+        ListItem(
+            headlineContent = {
+                Row(
+                    horizontalArrangement = Arrangement.spacedBy(MaterialTheme.padding.small),
+                    verticalAlignment = Alignment.CenterVertically,
+                ) {
+                    SourceIcon(source = source)
+                    Text(
+                        text = source.name,
+                        maxLines = 1,
+                        overflow = TextOverflow.Ellipsis,
+                        style = MaterialTheme.typography.bodyMedium,
+                        modifier = Modifier.weight(1f),
+                    )
+                    if (showLanguage) {
+                        Pill(
+                            text = LocaleHelper.getLocalizedDisplayName(source.lang),
+                            style = MaterialTheme.typography.bodySmall,
+                        )
+                    }
+                }
+            },
+            trailingContent = if (dragEnabled) {
+                {
+                    Icon(
+                        imageVector = Icons.Outlined.DragHandle,
+                        contentDescription = null,
+                        modifier = with(scope) {
+                            Modifier.draggableHandle()
+                        },
+                    )
+                }
+            } else {
+                null
+            },
+            colors = ListItemDefaults.colors(
+                containerColor = Color.Transparent,
+            ),
+            modifier = Modifier
+                .clickable(onClick = onClick)
+                .alpha(if (isSelected) 1f else DISABLED_ALPHA),
+        )
+    }
+
+    private class ScreenModel(
+        private val sourceManager: SourceManager = Injekt.get(),
+        private val sourcePreferences: SourcePreferences = Injekt.get(),
+    ) : StateScreenModel<ScreenModel.State>(State()) {
+
+        init {
+            screenModelScope.launchIO {
+                initSources()
+            }
+        }
+
+        private val sourcesComparator = { includedSources: List<Long> ->
+            compareBy<MigrationSource>(
+                { !it.isSelected },
+                { includedSources.indexOf(it.source.id) },
+                { with(it.source) { "$name (${LocaleHelper.getLocalizedDisplayName(lang)})" } },
+            )
+        }
+
+        private fun updateSources(save: Boolean = true, action: (List<MigrationSource>) -> List<MigrationSource>) {
+            val state = mutableState.updateAndGet { state ->
+                val updatedSources = action(state.sources)
+                val includedSources = updatedSources.mapNotNull { if (!it.isSelected) null else it.id }
+                state.copy(sources = updatedSources.sortedWith(sourcesComparator(includedSources)))
+            }
+            if (!save) return
+            state.sources
+                .filter { source -> source.isSelected }
+                .map { source -> source.source.id }
+                .let { sources -> sourcePreferences.migrationSources().set(sources) }
+        }
+
+        private fun initSources() {
+            val languages = sourcePreferences.enabledLanguages().get()
+            val pinnedSources = sourcePreferences.pinnedSources().get().mapNotNull { it.toLongOrNull() }
+            val includedSources = sourcePreferences.migrationSources().get()
+            val disabledSources = sourcePreferences.disabledSources().get()
+                .mapNotNull { it.toLongOrNull() }
+            val sources = sourceManager.getCatalogueSources()
+                .asSequence()
+                .filterIsInstance<HttpSource>()
+                .filter { it.lang in languages }
+                .map {
+                    val source = Source(
+                        id = it.id,
+                        lang = it.lang,
+                        name = it.name,
+                        supportsLatest = false,
+                        isStub = false,
+                    )
+                    MigrationSource(
+                        source = source,
+                        isSelected = when {
+                            includedSources.isNotEmpty() -> source.id in includedSources
+                            pinnedSources.isNotEmpty() -> source.id in pinnedSources
+                            else -> source.id !in disabledSources
+                        },
+                    )
+                }
+                .toList()
+
+            updateSources(save = false) { sources }
+        }
+
+        fun toggleSelection(id: Long) {
+            updateSources { sources ->
+                sources.map { source ->
+                    source.copy(isSelected = if (source.source.id == id) !source.isSelected else source.isSelected)
+                }
+            }
+        }
+
+        fun toggleSelection(config: SelectionConfig) {
+            val pinnedSources = sourcePreferences.pinnedSources().get().mapNotNull { it.toLongOrNull() }
+            val disabledSources = sourcePreferences.disabledSources().get().mapNotNull { it.toLongOrNull() }
+            val isSelected: (Long) -> Boolean = {
+                when (config) {
+                    SelectionConfig.All -> true
+                    SelectionConfig.None -> false
+                    SelectionConfig.Pinned -> it in pinnedSources
+                    SelectionConfig.Enabled -> it !in disabledSources
+                }
+            }
+            updateSources { sources ->
+                sources.map { source ->
+                    source.copy(isSelected = isSelected(source.source.id))
+                }
+            }
+        }
+
+        fun orderSource(from: Int, to: Int) {
+            updateSources {
+                it.toMutableList()
+                    .apply {
+                        add(to, removeAt(from))
+                    }
+                    .toList()
+            }
+        }
+
+        data class State(
+            val sources: List<MigrationSource> = emptyList(),
+        )
+
+        enum class SelectionConfig {
+            All,
+            None,
+            Pinned,
+            Enabled,
+        }
+    }
+
+    data class MigrationSource(
+        val source: Source,
+        val isSelected: Boolean,
+    ) {
+        val id = source.id
+        val visualName = source.visualName
+    }
+}

core/common/src/main/kotlin/tachiyomi/core/common/preference/PreferenceStore.kt

@@ -24,6 +24,18 @@ interface PreferenceStore {
     fun getAll(): Map<String, *>
 }
 
+fun PreferenceStore.getLongArray(
+    key: String,
+    defaultValue: List<Long>,
+): Preference<List<Long>> {
+    return getObject(
+        key = key,
+        defaultValue = defaultValue,
+        serializer = { it.joinToString(",") },
+        deserializer = { it.split(",").mapNotNull { l -> l.toLongOrNull() } },
+    )
+}
+
 inline fun <reified T : Enum<T>> PreferenceStore.getEnum(
     key: String,
     defaultValue: T,

i18n/src/commonMain/moko-resources/base/strings.xml

@@ -995,4 +995,12 @@
 
     <!-- Notes screen -->
     <string name="notes_placeholder">Enjoyed the part where…</string>
+
+    <string name="migrationConfigScreen.selectedHeader">Selected</string>
+    <string name="migrationConfigScreen.availableHeader">Available</string>
+    <string name="migrationConfigScreen.selectAllLabel">Select all</string>
+    <string name="migrationConfigScreen.selectNoneLabel">Select none</string>
+    <string name="migrationConfigScreen.selectEnabledLabel">Select enabled sources</string>
+    <string name="migrationConfigScreen.selectPinnedLabel">Select pinned sources</string>
+    <string name="migrationConfigScreen.continueButtonText">Continue</string>
 </resources>