Allow importing account-less legacy instances as sources

Legacy v1 instances without an account had no import path after the
switch to explicit account review. Surface them in a separate "Sources"
section of the legacy import view where they can be added with a single
tap (no sign-in) or removed, mirroring the accounts flow. Instances tied
to an account stay in the Accounts section and are not duplicated.

Detection now gates the entry points and first-launch prompt on any
legacy data (accounts or sources), not accounts alone.

Yattee/Localizable.xcstrings

@@ -5828,6 +5828,46 @@
         }
       }
     },
+    "migration.sources.footer" : {
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Add these sources from the previous Yattee app. No sign-in is required."
+          }
+        }
+      }
+    },
+    "migration.sources.imported.title" : {
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Source Added"
+          }
+        }
+      }
+    },
+    "migration.sources.remove.title" : {
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Remove Legacy Source?"
+          }
+        }
+      }
+    },
+    "migration.sources.section" : {
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Sources"
+          }
+        }
+      }
+    },
     "migration.subtitle" : {
       "extractionState" : "stale",
       "localizations" : {

Yattee/Services/Migration/LegacyDataMigrationService.swift

@@ -32,8 +32,8 @@ final class LegacyDataMigrationService {
 
     // MARK: - State
 
-    /// Changes whenever legacy account defaults are resolved, so SwiftUI views refresh.
-    private(set) var legacyAccountsRevision = 0
+    /// Changes whenever legacy account or instance defaults are resolved, so SwiftUI views refresh.
+    private(set) var legacyDataRevision = 0
 
     // MARK: - Initialization
 
@@ -57,13 +57,24 @@ final class LegacyDataMigrationService {
 
     /// Whether there are legacy accounts left for the user to review.
     func hasLegacyAccountsToImport() -> Bool {
-        _ = legacyAccountsRevision
+        _ = legacyDataRevision
         return !parseLegacyAccountsForImport().isEmpty
     }
 
-    /// Whether the one-time legacy account prompt should be shown.
+    /// Whether there are account-less legacy instances (sources) left to import.
+    func hasLegacyInstancesToImport() -> Bool {
+        _ = legacyDataRevision
+        return !parseLegacyInstancesForImport().isEmpty
+    }
+
+    /// Whether there is any legacy data (accounts or sources) left to import.
+    func hasLegacyDataToImport() -> Bool {
+        hasLegacyAccountsToImport() || hasLegacyInstancesToImport()
+    }
+
+    /// Whether the one-time legacy data prompt should be shown.
     var shouldShowLegacyAccountsPrompt: Bool {
-        hasLegacyAccountsToImport() && !UserDefaults.standard.bool(forKey: legacyAccountsPromptShownKey)
+        hasLegacyDataToImport() && !UserDefaults.standard.bool(forKey: legacyAccountsPromptShownKey)
     }
 
     /// Marks the one-time legacy account prompt as shown.
@@ -131,6 +142,52 @@ final class LegacyDataMigrationService {
         return importItems
     }
 
+    /// Parses account-less legacy instances that can be re-added as sources.
+    /// Instances tied to an account are handled by `parseLegacyAccountsForImport`
+    /// and are omitted here; instances already present in v2 are omitted too.
+    func parseLegacyInstancesForImport() -> [LegacyInstanceImportItem] {
+        let defaults = UserDefaults.standard
+        let legacyInstances = parseLegacyInstances(from: defaults)
+        let accounts = parseLegacyAccounts(from: defaults)
+
+        // Instances that already have an account are covered by the accounts section.
+        let accountInstanceIDs = Set(accounts.map(\.instanceID))
+        let accountHosts = Set(accounts.compactMap { account -> String? in
+            guard let url = URL(string: account.apiURL) else { return nil }
+            return Self.splitCredentials(from: url).cleanURL.host
+        })
+
+        return legacyInstances.compactMap { instance in
+            guard let instanceType = instance.instanceType,
+                  instanceType == .invidious || instanceType == .piped,
+                  let url = instance.url
+            else {
+                return nil
+            }
+
+            if accountInstanceIDs.contains(instance.id) {
+                return nil
+            }
+
+            let (cleanURL, _) = Self.splitCredentials(from: url)
+            if let host = cleanURL.host, accountHosts.contains(host) {
+                return nil
+            }
+
+            if isLegacyInstanceAlreadyImported(instanceType: instanceType, url: url) {
+                return nil
+            }
+
+            return LegacyInstanceImportItem(
+                legacyInstanceID: instance.id,
+                instanceType: instanceType,
+                url: url,
+                instanceName: instance.name.isEmpty ? nil : instance.name,
+                proxiesVideos: instance.proxiesVideos
+            )
+        }
+    }
+
     // MARK: - Import
 
     /// Re-creates a legacy account by signing in with fresh credentials.
@@ -180,6 +237,39 @@ final class LegacyDataMigrationService {
         return instance
     }
 
+    /// Re-creates a legacy instance (source) without signing in.
+    /// The matching source is created if needed; otherwise the existing one is reused.
+    /// - Parameter item: The legacy instance to import
+    /// - Returns: The instance that was created or reused
+    @discardableResult
+    func importLegacyInstance(_ item: LegacyInstanceImportItem) -> Instance {
+        let (cleanURL, basicAuthCredentials) = Self.splitCredentials(from: item.url)
+
+        let instance = instancesManager.instances.first { existing in
+            existing.url.host == cleanURL.host && existing.type == item.instanceType
+        } ?? Instance(
+            id: UUID(),
+            type: item.instanceType,
+            url: cleanURL,
+            name: item.instanceName,
+            isEnabled: true,
+            proxiesVideos: item.proxiesVideos
+        )
+
+        addInstanceIfNeeded(instance)
+
+        if let basicAuthCredentials {
+            basicAuthCredentialsManager.setCredentials(
+                username: basicAuthCredentials.username,
+                password: basicAuthCredentials.password,
+                for: instance
+            )
+        }
+
+        removeLegacyInstance(item)
+        return instance
+    }
+
     private func instanceForAccountImport(_ item: LegacyAccountImportItem) -> Instance {
         let (cleanURL, _) = Self.splitCredentials(from: item.url)
         if let existing = instancesManager.instances.first(where: { existing in
@@ -225,6 +315,13 @@ final class LegacyDataMigrationService {
         }
     }
 
+    private func isLegacyInstanceAlreadyImported(instanceType: InstanceType, url: URL) -> Bool {
+        let (cleanURL, _) = Self.splitCredentials(from: url)
+        return instancesManager.instances.contains { existing in
+            existing.url.host == cleanURL.host && existing.type == instanceType
+        }
+    }
+
     // MARK: - Credential Splitting
 
     /// Splits embedded basic-auth credentials out of a URL.
@@ -285,7 +382,42 @@ final class LegacyDataMigrationService {
             defaults.set(accounts, forKey: legacyAccountsKey)
         }
 
-        legacyAccountsRevision += 1
+        legacyDataRevision += 1
+    }
+
+    /// Removes one legacy instance after import or explicit user dismissal.
+    /// If this was the last instance, the instance defaults key is removed.
+    func removeLegacyInstance(_ item: LegacyInstanceImportItem) {
+        removeLegacyInstances(withIDs: [item.legacyInstanceID])
+    }
+
+    private func removeLegacyInstances(withIDs ids: [String]) {
+        let defaults = UserDefaults.standard
+        let ids = Set(ids)
+
+        guard var instances = defaults.array(forKey: legacyInstancesKey) as? [[String: Any]] else {
+            return
+        }
+
+        let originalCount = instances.count
+        instances.removeAll { dictionary in
+            guard let instanceID = dictionary["id"] as? String else {
+                return false
+            }
+            return ids.contains(instanceID)
+        }
+
+        guard instances.count != originalCount else {
+            return
+        }
+
+        if instances.isEmpty {
+            defaults.removeObject(forKey: legacyInstancesKey)
+        } else {
+            defaults.set(instances, forKey: legacyInstancesKey)
+        }
+
+        legacyDataRevision += 1
     }
 
     // MARK: - Prompt State

Yattee/Services/Migration/LegacyDataModels.swift

@@ -173,3 +173,35 @@ struct LegacyAccountImportItem: Identifiable, Sendable {
         return url.host ?? url.absoluteString
     }
 }
+
+// MARK: - Legacy Instance Import Item
+
+/// Represents a legacy instance (source) that can be re-created without signing in.
+/// Used for v1 instances that have no associated account.
+struct LegacyInstanceImportItem: Identifiable, Sendable {
+    /// The original v1 instance ID.
+    let legacyInstanceID: String
+
+    /// The type of instance.
+    let instanceType: InstanceType
+
+    /// The instance URL.
+    let url: URL
+
+    /// User-defined instance name, if any.
+    let instanceName: String?
+
+    /// Whether this instance proxies videos.
+    let proxiesVideos: Bool
+
+    /// Stable identifier for SwiftUI lists.
+    var id: String { legacyInstanceID }
+
+    /// Display name for the source row.
+    var instanceDisplayName: String {
+        if let instanceName, !instanceName.isEmpty {
+            return instanceName
+        }
+        return url.host ?? url.absoluteString
+    }
+}

Yattee/Views/Settings/AddSourceView.swift

@@ -241,7 +241,7 @@ struct AddSourceView: View {
         .task {
             refreshLegacyAccountsVisibility()
         }
-        .onChange(of: appEnvironment?.legacyMigrationService.legacyAccountsRevision ?? 0) {
+        .onChange(of: appEnvironment?.legacyMigrationService.legacyDataRevision ?? 0) {
             refreshLegacyAccountsVisibility()
         }
     }
@@ -262,7 +262,7 @@ struct AddSourceView: View {
     }
 
     private func refreshLegacyAccountsVisibility() {
-        hasLegacyAccountsToImport = appEnvironment?.legacyMigrationService.hasLegacyAccountsToImport() == true
+        hasLegacyAccountsToImport = appEnvironment?.legacyMigrationService.hasLegacyDataToImport() == true
     }
 }
 

Yattee/Views/Settings/AdvancedSettingsView.swift

@@ -416,7 +416,7 @@ struct AdvancedSettingsView: View {
             }
             #endif
 
-            if appEnvironment?.legacyMigrationService.hasLegacyAccountsToImport() == true {
+            if appEnvironment?.legacyMigrationService.hasLegacyDataToImport() == true {
                 #if os(tvOS)
                 NavigationLink {
                     LegacyDataImportView()

Yattee/Views/Settings/LegacyDataImportView.swift

@@ -2,7 +2,7 @@
 //  LegacyDataImportView.swift
 //  Yattee
 //
-//  View for reviewing and re-creating accounts from the legacy v1 app.
+//  View for reviewing and re-creating accounts and sources from the legacy v1 app.
 //
 
 import SwiftUI
@@ -13,10 +13,12 @@ struct LegacyAccountsImportView: View {
 
     var showsDoneButton = true
 
-    @State private var items: [LegacyAccountImportItem] = []
+    @State private var accountItems: [LegacyAccountImportItem] = []
+    @State private var instanceItems: [LegacyInstanceImportItem] = []
     @State private var rowStates: [String: LegacyAccountRowState] = [:]
     @State private var isLoading = true
-    @State private var pendingRemoval: LegacyAccountImportItem?
+    @State private var pendingRemoval: PendingRemoval?
+    @State private var importSuccessTitle = ""
     @State private var importedInstanceName = ""
     @State private var showingImportSuccess = false
 
@@ -24,16 +26,20 @@ struct LegacyAccountsImportView: View {
         appEnvironment?.legacyMigrationService
     }
 
+    private var isEmpty: Bool {
+        accountItems.isEmpty && instanceItems.isEmpty
+    }
+
     var body: some View {
         Group {
             if isLoading {
                 ProgressView()
                     .controlSize(.large)
                     .frame(maxWidth: .infinity, maxHeight: .infinity)
-            } else if items.isEmpty {
+            } else if isEmpty {
                 emptyState
             } else {
-                accountList
+                contentList
             }
         }
         .navigationTitle(String(localized: "migration.accounts.title"))
@@ -52,44 +58,62 @@ struct LegacyAccountsImportView: View {
             #endif
         }
         .task {
-            loadLegacyAccounts()
+            loadLegacyData()
         }
         .confirmationDialog(
-            String(localized: "migration.accounts.remove.title"),
+            pendingRemoval?.confirmationTitle ?? "",
             item: $pendingRemoval,
             titleVisibility: .visible
-        ) { item in
+        ) { removal in
             Button(String(localized: "migration.accounts.remove.confirm"), role: .destructive) {
-                removeLegacyAccount(item)
+                confirmRemoval(removal)
             }
             Button(String(localized: "common.cancel"), role: .cancel) {}
-        } message: { item in
-            Text(String(localized: "migration.accounts.remove.message \(item.displayName)"))
+        } message: { removal in
+            Text(String(localized: "migration.accounts.remove.message \(removal.displayName)"))
         }
-        .alert(String(localized: "migration.accounts.imported.title"), isPresented: $showingImportSuccess) {
+        .alert(importSuccessTitle, isPresented: $showingImportSuccess) {
             Button(String(localized: "common.ok"), role: .cancel) {}
         } message: {
             Text(importedInstanceName)
         }
     }
 
-    private var accountList: some View {
+    private var contentList: some View {
         Form {
-            Section {
-                ForEach(items) { item in
-                    LegacyAccountImportRow(
-                        item: item,
-                        state: stateBinding(for: item)
-                    ) {
-                        importLegacyAccount(item)
-                    } onRemove: {
-                        pendingRemoval = item
+            if !accountItems.isEmpty {
+                Section {
+                    ForEach(accountItems) { item in
+                        LegacyAccountImportRow(
+                            item: item,
+                            state: stateBinding(for: item)
+                        ) {
+                            importLegacyAccount(item)
+                        } onRemove: {
+                            pendingRemoval = .account(item)
+                        }
                     }
+                } header: {
+                    Text(String(localized: "migration.accounts.section"))
+                } footer: {
+                    Text(String(localized: "migration.accounts.footer"))
+                }
+            }
+
+            if !instanceItems.isEmpty {
+                Section {
+                    ForEach(instanceItems) { item in
+                        LegacyInstanceImportRow(item: item) {
+                            importLegacyInstance(item)
+                        } onRemove: {
+                            pendingRemoval = .instance(item)
+                        }
+                    }
+                } header: {
+                    Text(String(localized: "migration.sources.section"))
+                } footer: {
+                    Text(String(localized: "migration.sources.footer"))
                 }
-            } header: {
-                Text(String(localized: "migration.accounts.section"))
-            } footer: {
-                Text(String(localized: "migration.accounts.footer"))
             }
         }
         #if os(iOS)
@@ -106,10 +130,11 @@ struct LegacyAccountsImportView: View {
         .frame(maxWidth: .infinity, maxHeight: .infinity)
     }
 
-    private func loadLegacyAccounts() {
-        let loadedItems = legacyMigrationService?.parseLegacyAccountsForImport() ?? []
-        items = loadedItems
-        for item in loadedItems where rowStates[item.legacyAccountID] == nil {
+    private func loadLegacyData() {
+        let loadedAccounts = legacyMigrationService?.parseLegacyAccountsForImport() ?? []
+        accountItems = loadedAccounts
+        instanceItems = legacyMigrationService?.parseLegacyInstancesForImport() ?? []
+        for item in loadedAccounts where rowStates[item.legacyAccountID] == nil {
             rowStates[item.legacyAccountID] = LegacyAccountRowState(username: item.username)
         }
         isLoading = false
@@ -137,9 +162,11 @@ struct LegacyAccountsImportView: View {
                     username: state.username,
                     password: state.password
                 )
+                importSuccessTitle = String(localized: "migration.accounts.imported.title")
                 importedInstanceName = importedInstance.displayName
                 showingImportSuccess = true
-                removeResolvedItem(item)
+                accountItems.removeAll { $0.legacyAccountID == item.legacyAccountID }
+                rowStates.removeValue(forKey: item.legacyAccountID)
             } catch APIError.unauthorized {
                 setImportError(String(localized: "login.error.invalidCredentials"), for: item)
             } catch {
@@ -148,6 +175,15 @@ struct LegacyAccountsImportView: View {
         }
     }
 
+    private func importLegacyInstance(_ item: LegacyInstanceImportItem) {
+        guard let service = legacyMigrationService else { return }
+        let importedInstance = service.importLegacyInstance(item)
+        importSuccessTitle = String(localized: "migration.sources.imported.title")
+        importedInstanceName = importedInstance.displayName
+        showingImportSuccess = true
+        instanceItems.removeAll { $0.legacyInstanceID == item.legacyInstanceID }
+    }
+
     private func setImportError(_ message: String, for item: LegacyAccountImportItem) {
         var state = rowStates[item.legacyAccountID] ?? LegacyAccountRowState(username: item.username)
         state.isImporting = false
@@ -155,17 +191,55 @@ struct LegacyAccountsImportView: View {
         rowStates[item.legacyAccountID] = state
     }
 
-    private func removeLegacyAccount(_ item: LegacyAccountImportItem) {
-        legacyMigrationService?.removeLegacyAccount(item)
-        removeResolvedItem(item)
-    }
-
-    private func removeResolvedItem(_ item: LegacyAccountImportItem) {
-        items.removeAll { $0.legacyAccountID == item.legacyAccountID }
-        rowStates.removeValue(forKey: item.legacyAccountID)
+    private func confirmRemoval(_ removal: PendingRemoval) {
+        switch removal {
+        case .account(let item):
+            legacyMigrationService?.removeLegacyAccount(item)
+            accountItems.removeAll { $0.legacyAccountID == item.legacyAccountID }
+            rowStates.removeValue(forKey: item.legacyAccountID)
+        case .instance(let item):
+            legacyMigrationService?.removeLegacyInstance(item)
+            instanceItems.removeAll { $0.legacyInstanceID == item.legacyInstanceID }
+        }
     }
 }
 
+// MARK: - Pending Removal
+
+private enum PendingRemoval: Identifiable {
+    case account(LegacyAccountImportItem)
+    case instance(LegacyInstanceImportItem)
+
+    var id: String {
+        switch self {
+        case .account(let item):
+            return "account:\(item.id)"
+        case .instance(let item):
+            return "instance:\(item.id)"
+        }
+    }
+
+    var displayName: String {
+        switch self {
+        case .account(let item):
+            return item.displayName
+        case .instance(let item):
+            return item.instanceDisplayName
+        }
+    }
+
+    var confirmationTitle: String {
+        switch self {
+        case .account:
+            return String(localized: "migration.accounts.remove.title")
+        case .instance:
+            return String(localized: "migration.sources.remove.title")
+        }
+    }
+}
+
+// MARK: - Account Row
+
 private struct LegacyAccountImportRow: View {
     let item: LegacyAccountImportItem
     @Binding var state: LegacyAccountRowState
@@ -179,7 +253,7 @@ private struct LegacyAccountImportRow: View {
     var body: some View {
         VStack(alignment: .leading, spacing: 12) {
             HStack(alignment: .top, spacing: 12) {
-                Image(systemName: iconName)
+                Image(systemName: legacyInstanceIcon(for: item.instanceType))
                     .font(.title2)
                     .foregroundStyle(.secondary)
                     .frame(width: 28)
@@ -263,16 +337,63 @@ private struct LegacyAccountImportRow: View {
             return String(localized: "login.username")
         }
     }
+}
 
-    private var iconName: String {
-        switch item.instanceType {
-        case .invidious:
-            return "server.rack"
-        case .piped:
-            return "cloud"
-        default:
-            return "globe"
+// MARK: - Source Row
+
+private struct LegacyInstanceImportRow: View {
+    let item: LegacyInstanceImportItem
+    let onImport: () -> Void
+    let onRemove: () -> Void
+
+    var body: some View {
+        VStack(alignment: .leading, spacing: 12) {
+            HStack(alignment: .top, spacing: 12) {
+                Image(systemName: legacyInstanceIcon(for: item.instanceType))
+                    .font(.title2)
+                    .foregroundStyle(.secondary)
+                    .frame(width: 28)
+
+                VStack(alignment: .leading, spacing: 3) {
+                    Text(item.instanceDisplayName)
+                        .font(.headline)
+
+                    Text(item.url.host ?? item.url.absoluteString)
+                        .font(.caption)
+                        .foregroundStyle(.secondary)
+                        .lineLimit(1)
+                }
+
+                Spacer()
+            }
+
+            HStack {
+                Button(role: .destructive, action: onRemove) {
+                    Text(String(localized: "common.remove"))
+                }
+                .foregroundStyle(.red)
+                .tint(.red)
+
+                Spacer()
+
+                Button(action: onImport) {
+                    Text(String(localized: "migration.import"))
+                }
+                .buttonStyle(.borderedProminent)
+            }
         }
+        .padding(.vertical, 8)
+    }
+}
+
+private func legacyInstanceIcon(for type: InstanceType) -> String {
+    switch type {
+    case .invidious:
+        return "server.rack"
+    case .piped:
+        return "cloud"
+    default:
+        return "globe"
     }
 }